feat: support serverless in rest (#5001)

Signed-off-by: kevin <wanjunfeng@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/issue-translator.yml

@@ -1,18 +0,0 @@
-name: 'issue-translator'
-on: 
-  issue_comment: 
-    types: [created]
-  issues: 
-    types: [opened]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: usthe/issues-translate-action@v2.7
-        with:
-          IS_MODIFY_TITLE: true
-          # not require, default false, . Decide whether to modify the issue title
-          # if true, the robot account @Issues-translate-bot must have modification permissions, invite @Issues-translate-bot to your project or use your custom bot.
-          CUSTOM_BOT_NOTE: Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿
-          # not require. Customize the translation robot prefix message.

.github/workflows/version-check.yml

@@ -21,7 +21,8 @@ jobs:
         id: get_version
         run: |
           # Extract version from tools/goctl/v* format
-          echo "VERSION=${GITHUB_REF#refs/tags/tools/goctl/v}" >> $GITHUB_ENV
+          VERSION="${GITHUB_REF#refs/tags/tools/goctl/v}"
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
           echo "Extracted version: $VERSION"
 
       - name: Check version in goctl source code
@@ -31,7 +32,11 @@ jobs:
           
           # Check version in BuildVersion constant
           VERSION_IN_CODE=$(grep -r "const BuildVersion =" . | grep -o '".*"' | tr -d '"')
+          echo "Version in code: $VERSION_IN_CODE"
+          echo "Expected version: $VERSION"
+          
           if [ "$VERSION_IN_CODE" != "$VERSION" ]; then
             echo "Version mismatch: Version in code ($VERSION_IN_CODE) doesn't match tag version ($VERSION)"
             exit 1
           fi
+          echo "✅ Version check passed!"

core/breaker/breaker.go

@@ -8,16 +8,12 @@ import (
 	"sync"
 	"time"
 
-	"github.com/zeromicro/go-zero/core/mathx"
 	"github.com/zeromicro/go-zero/core/proc"
 	"github.com/zeromicro/go-zero/core/stat"
 	"github.com/zeromicro/go-zero/core/stringx"
 )
 
-const (
+const numHistoryReasons = 5
-	numHistoryReasons = 5
-	timeFormat        = "15:04:05"
-)
 
 // ErrServiceUnavailable is returned when the Breaker state is open.
 var ErrServiceUnavailable = errors.New("circuit breaker is open")
@@ -262,9 +258,9 @@ type errorWindow struct {
 
 func (ew *errorWindow) add(reason string) {
 	ew.lock.Lock()
-	ew.reasons[ew.index] = fmt.Sprintf("%s %s", time.Now().Format(timeFormat), reason)
+	ew.reasons[ew.index] = fmt.Sprintf("%s %s", time.Now().Format(time.TimeOnly), reason)
 	ew.index = (ew.index + 1) % numHistoryReasons
-	ew.count = mathx.MinInt(ew.count+1, numHistoryReasons)
+	ew.count = min(ew.count+1, numHistoryReasons)
 	ew.lock.Unlock()
 }
 

core/discov/internal/registry_test.go

@@ -423,7 +423,7 @@ func TestRegistry_Monitor(t *testing.T) {
 	GetRegistry().clusters = map[string]*cluster{
 		getClusterKey(endpoints): {
 			watchers: map[watchKey]*watchValue{
-				watchKey{
+				{
 					key:        "foo",
 					exactMatch: true,
 				}: {
@@ -449,7 +449,7 @@ func TestRegistry_Unmonitor(t *testing.T) {
 	GetRegistry().clusters = map[string]*cluster{
 		getClusterKey(endpoints): {
 			watchers: map[watchKey]*watchValue{
-				watchKey{
+				{
 					key:        "foo",
 					exactMatch: true,
 				}: {

core/hash/consistenthash_test.go

@@ -86,21 +86,16 @@ func TestConsistentHashIncrementalTransfer(t *testing.T) {
 
 func TestConsistentHashTransferOnFailure(t *testing.T) {
 	index := 41
-	keys, newKeys := getKeysBeforeAndAfterFailure(t, "localhost:", index)
+	ratioNotExists := getTransferRatioOnFailure(t, index)
-	var transferred int
+	assert.True(t, ratioNotExists == 0, fmt.Sprintf("%d: %f", index, ratioNotExists))
-	for k, v := range newKeys {
+	index = 13
-		if v != keys[k] {
+	ratio := getTransferRatioOnFailure(t, index)
-			transferred++
+	assert.True(t, ratio < 2.5/keySize, fmt.Sprintf("%d: %f", index, ratio))
-		}
-	}
-
-	ratio := float32(transferred) / float32(requestSize)
-	assert.True(t, ratio < 2.5/float32(keySize), fmt.Sprintf("%d: %f", index, ratio))
 }
 
 func TestConsistentHashLeastTransferOnFailure(t *testing.T) {
 	prefix := "localhost:"
-	index := 41
+	index := 13
 	keys, newKeys := getKeysBeforeAndAfterFailure(t, prefix, index)
 	for k, v := range keys {
 		newV := newKeys[k]
@@ -164,6 +159,17 @@ func getKeysBeforeAndAfterFailure(t *testing.T, prefix string, index int) (map[i
 	return keys, newKeys
 }
 
+func getTransferRatioOnFailure(t *testing.T, index int) float32 {
+	keys, newKeys := getKeysBeforeAndAfterFailure(t, "localhost:", index)
+	var transferred int
+	for k, v := range newKeys {
+		if v != keys[k] {
+			transferred++
+		}
+	}
+	return float32(transferred) / float32(requestSize)
+}
+
 type mockNode struct {
 	addr string
 	id   int

core/hash/hash.go

@@ -2,7 +2,7 @@ package hash
 
 import (
 	"crypto/md5"
-	"fmt"
+	"encoding/hex"
 
 	"github.com/spaolacci/murmur3"
 )
@@ -20,6 +20,7 @@ func Md5(data []byte) []byte {
 }
 
 // Md5Hex returns the md5 hex string of data.
+// This function is optimized for better performance than fmt.Sprintf.
 func Md5Hex(data []byte) string {
-	return fmt.Sprintf("%x", Md5(data))
+	return hex.EncodeToString(Md5(data))
 }

core/logx/fields.go

@@ -7,12 +7,11 @@ import (
 )
 
 var (
-	fieldsContextKey contextKey
 	globalFields     atomic.Value
 	globalFieldsLock sync.Mutex
 )
 
-type contextKey struct{}
+type fieldsKey struct{}
 
 // AddGlobalFields adds global fields.
 func AddGlobalFields(fields ...LogField) {
@@ -29,16 +28,16 @@ func AddGlobalFields(fields ...LogField) {
 
 // ContextWithFields returns a new context with the given fields.
 func ContextWithFields(ctx context.Context, fields ...LogField) context.Context {
-	if val := ctx.Value(fieldsContextKey); val != nil {
+	if val := ctx.Value(fieldsKey{}); val != nil {
 		if arr, ok := val.([]LogField); ok {
 			allFields := make([]LogField, 0, len(arr)+len(fields))
 			allFields = append(allFields, arr...)
 			allFields = append(allFields, fields...)
-			return context.WithValue(ctx, fieldsContextKey, allFields)
+			return context.WithValue(ctx, fieldsKey{}, allFields)
 		}
 	}
 
-	return context.WithValue(ctx, fieldsContextKey, fields)
+	return context.WithValue(ctx, fieldsKey{}, fields)
 }
 
 // WithFields returns a new logger with the given fields.

core/logx/fields_test.go

@@ -34,7 +34,7 @@ func TestAddGlobalFields(t *testing.T) {
 
 func TestContextWithFields(t *testing.T) {
 	ctx := ContextWithFields(context.Background(), Field("a", 1), Field("b", 2))
-	vals := ctx.Value(fieldsContextKey)
+	vals := ctx.Value(fieldsKey{})
 	assert.NotNil(t, vals)
 	fields, ok := vals.([]LogField)
 	assert.True(t, ok)
@@ -43,7 +43,7 @@ func TestContextWithFields(t *testing.T) {
 
 func TestWithFields(t *testing.T) {
 	ctx := WithFields(context.Background(), Field("a", 1), Field("b", 2))
-	vals := ctx.Value(fieldsContextKey)
+	vals := ctx.Value(fieldsKey{})
 	assert.NotNil(t, vals)
 	fields, ok := vals.([]LogField)
 	assert.True(t, ok)
@@ -55,7 +55,7 @@ func TestWithFieldsAppend(t *testing.T) {
 	ctx := context.WithValue(context.Background(), dummyKey, "dummy")
 	ctx = ContextWithFields(ctx, Field("a", 1), Field("b", 2))
 	ctx = ContextWithFields(ctx, Field("c", 3), Field("d", 4))
-	vals := ctx.Value(fieldsContextKey)
+	vals := ctx.Value(fieldsKey{})
 	assert.NotNil(t, vals)
 	fields, ok := vals.([]LogField)
 	assert.True(t, ok)
@@ -80,8 +80,8 @@ func TestWithFieldsAppendCopy(t *testing.T) {
 	ctxa := ContextWithFields(ctx, af)
 	ctxb := ContextWithFields(ctx, bf)
 
-	assert.EqualValues(t, af, ctxa.Value(fieldsContextKey).([]LogField)[count])
+	assert.EqualValues(t, af, ctxa.Value(fieldsKey{}).([]LogField)[count])
-	assert.EqualValues(t, bf, ctxb.Value(fieldsContextKey).([]LogField)[count])
+	assert.EqualValues(t, bf, ctxb.Value(fieldsKey{}).([]LogField)[count])
 }
 
 func BenchmarkAtomicValue(b *testing.B) {

core/logx/richlogger.go

@@ -224,7 +224,7 @@ func (l *richLogger) buildFields(fields ...LogField) []LogField {
 		fields = append(fields, Field(spanKey, spanID))
 	}
 
-	val := l.ctx.Value(fieldsContextKey)
+	val := l.ctx.Value(fieldsKey{})
 	if val != nil {
 		if arr, ok := val.([]LogField); ok {
 			fields = append(fields, arr...)

core/logx/rotatelogger.go

@@ -18,7 +18,6 @@ import (
 )
 
 const (
-	dateFormat      = "2006-01-02"
 	hoursPerDay     = 24
 	bufferSize      = 100
 	defaultDirMode  = 0o755
@@ -116,7 +115,7 @@ func (r *DailyRotateRule) OutdatedFiles() []string {
 	}
 
 	var buf strings.Builder
-	boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay*r.days)).Format(dateFormat)
+	boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay*r.days)).Format(time.DateOnly)
 	buf.WriteString(r.filename)
 	buf.WriteString(r.delimiter)
 	buf.WriteString(boundary)
@@ -425,7 +424,7 @@ func compressLogFile(file string) {
 }
 
 func getNowDate() string {
-	return time.Now().Format(dateFormat)
+	return time.Now().Format(time.DateOnly)
 }
 
 func getNowDateInRFC3339Format() string {

core/logx/rotatelogger_test.go

@@ -52,7 +52,7 @@ func TestDailyRotateRuleOutdatedFiles(t *testing.T) {
 	})
 
 	t.Run("temp files", func(t *testing.T) {
-		boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay) * 2).Format(dateFormat)
+		boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay) * 2).Format(time.DateOnly)
 		f1, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary)
 		assert.NoError(t, err)
 		_ = f1.Close()
@@ -73,7 +73,7 @@ func TestDailyRotateRuleOutdatedFiles(t *testing.T) {
 
 func TestDailyRotateRuleShallRotate(t *testing.T) {
 	var rule DailyRotateRule
-	rule.rotatedTime = time.Now().Add(time.Hour * 24).Format(dateFormat)
+	rule.rotatedTime = time.Now().Add(time.Hour * 24).Format(time.DateOnly)
 	assert.True(t, rule.ShallRotate(0))
 }
 
@@ -117,12 +117,12 @@ func TestSizeLimitRotateRuleOutdatedFiles(t *testing.T) {
 	})
 
 	t.Run("temp files", func(t *testing.T) {
-		boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay) * 2).Format(dateFormat)
+		boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay) * 2).Format(time.DateOnly)
 		f1, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary)
 		assert.NoError(t, err)
 		f2, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary)
 		assert.NoError(t, err)
-		boundary1 := time.Now().Add(time.Hour * time.Duration(hoursPerDay) * 2).Format(dateFormat)
+		boundary1 := time.Now().Add(time.Hour * time.Duration(hoursPerDay) * 2).Format(time.DateOnly)
 		f3, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary1)
 		assert.NoError(t, err)
 		t.Cleanup(func() {
@@ -144,12 +144,12 @@ func TestSizeLimitRotateRuleOutdatedFiles(t *testing.T) {
 	})
 
 	t.Run("no backups", func(t *testing.T) {
-		boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay) * 2).Format(dateFormat)
+		boundary := time.Now().Add(-time.Hour * time.Duration(hoursPerDay) * 2).Format(time.DateOnly)
 		f1, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary)
 		assert.NoError(t, err)
 		f2, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary)
 		assert.NoError(t, err)
-		boundary1 := time.Now().Add(time.Hour * time.Duration(hoursPerDay) * 2).Format(dateFormat)
+		boundary1 := time.Now().Add(time.Hour * time.Duration(hoursPerDay) * 2).Format(time.DateOnly)
 		f3, err := os.CreateTemp(os.TempDir(), "go-zero-test-"+boundary1)
 		assert.NoError(t, err)
 		t.Cleanup(func() {
@@ -319,7 +319,7 @@ func TestRotateLoggerWrite(t *testing.T) {
 	}
 	// the following write calls cannot be changed to Write, because of DATA RACE.
 	logger.write([]byte(`foo`))
-	rule.rotatedTime = time.Now().Add(-time.Hour * 24).Format(dateFormat)
+	rule.rotatedTime = time.Now().Add(-time.Hour * 24).Format(time.DateOnly)
 	logger.write([]byte(`bar`))
 	logger.Close()
 	logger.write([]byte(`baz`))
@@ -447,7 +447,7 @@ func TestRotateLoggerWithSizeLimitRotateRuleWrite(t *testing.T) {
 	}
 	// the following write calls cannot be changed to Write, because of DATA RACE.
 	logger.write([]byte(`foo`))
-	rule.rotatedTime = time.Now().Add(-time.Hour * 24).Format(dateFormat)
+	rule.rotatedTime = time.Now().Add(-time.Hour * 24).Format(time.DateOnly)
 	logger.write([]byte(`bar`))
 	logger.Close()
 	logger.write([]byte(`baz`))

core/mapping/marshaler.go

@@ -13,6 +13,15 @@ const (
 
 // Marshal marshals the given val and returns the map that contains the fields.
 // optional=another is not implemented, and it's hard to implement and not commonly used.
+// support anonymous field, e.g.:
+//
+//	type Foo struct {
+//		Token string `header:"token"`
+//	}
+//	type FooB struct {
+//		Foo
+//		Bar string  `json:"bar"`
+//	}
 func Marshal(val any) (map[string]map[string]any, error) {
 	ret := make(map[string]map[string]any)
 	tp := reflect.TypeOf(val)
@@ -44,6 +53,16 @@ func getTag(field reflect.StructField) (string, bool) {
 	return strings.TrimSpace(tag), false
 }
 
+func insertValue(collector map[string]map[string]any, tag string, key string, val any) {
+	if m, ok := collector[tag]; ok {
+		m[key] = val
+	} else {
+		collector[tag] = map[string]any{
+			key: val,
+		}
+	}
+}
+
 func processMember(field reflect.StructField, value reflect.Value,
 	collector map[string]map[string]any) error {
 	var key string
@@ -69,15 +88,20 @@ func processMember(field reflect.StructField, value reflect.Value,
 		val = fmt.Sprint(val)
 	}
 
-	m, ok := collector[tag]
+	if field.Anonymous {
-	if ok {
+		anonCollector, err := Marshal(val)
-		m[key] = val
+		if err != nil {
+			return err
+		}
+
+		for anonTag, anonMap := range anonCollector {
+			for anonKey, anonVal := range anonMap {
+				insertValue(collector, anonTag, anonKey, anonVal)
+			}
+		}
 	} else {
-		m = map[string]any{
+		insertValue(collector, tag, key, val)
-			key: val,
 	}
-	}
-	collector[tag] = m
 
 	return nil
 }
@@ -118,7 +142,7 @@ func validateOptional(field reflect.StructField, value reflect.Value) error {
 		if value.IsNil() {
 			return fmt.Errorf("field %q is nil", field.Name)
 		}
-	case reflect.Array, reflect.Slice, reflect.Map:
+	case reflect.Slice, reflect.Map:
 		if value.IsNil() || value.Len() == 0 {
 			return fmt.Errorf("field %q is empty", field.Name)
 		}

core/mapping/marshaler_test.go

@@ -27,6 +27,124 @@ func TestMarshal(t *testing.T) {
 	assert.True(t, m[emptyTag]["Anonymous"].(bool))
 }
 
+func TestMarshal_Anonymous(t *testing.T) {
+	t.Run("anonymous", func(t *testing.T) {
+		type BaseHeader struct {
+			Token string `header:"token"`
+		}
+		v := struct {
+			Name    string `json:"name"`
+			Address string `json:"address,options=[beijing,shanghai]"`
+			Age     int    `json:"age"`
+			BaseHeader
+		}{
+			Name:    "kevin",
+			Address: "shanghai",
+			Age:     20,
+			BaseHeader: BaseHeader{
+				Token: "token_xxx",
+			},
+		}
+		m, err := Marshal(v)
+		assert.Nil(t, err)
+		assert.Equal(t, "kevin", m["json"]["name"])
+		assert.Equal(t, "shanghai", m["json"]["address"])
+		assert.Equal(t, 20, m["json"]["age"].(int))
+		assert.Equal(t, "token_xxx", m["header"]["token"])
+
+		v1 := struct {
+			Name    string `json:"name"`
+			Address string `json:"address,options=[beijing,shanghai]"`
+			Age     int    `json:"age"`
+			BaseHeader
+		}{
+			Name:    "kevin",
+			Address: "shanghai",
+			Age:     20,
+		}
+		m1, err1 := Marshal(v1)
+		assert.Nil(t, err1)
+		assert.Equal(t, "kevin", m1["json"]["name"])
+		assert.Equal(t, "shanghai", m1["json"]["address"])
+		assert.Equal(t, 20, m1["json"]["age"].(int))
+
+		type AnotherHeader struct {
+			Version string `header:"version"`
+		}
+		v2 := struct {
+			Name    string `json:"name"`
+			Address string `json:"address,options=[beijing,shanghai]"`
+			Age     int    `json:"age"`
+			BaseHeader
+			AnotherHeader
+		}{
+			Name:    "kevin",
+			Address: "shanghai",
+			Age:     20,
+			BaseHeader: BaseHeader{
+				Token: "token_xxx",
+			},
+			AnotherHeader: AnotherHeader{
+				Version: "v1.0",
+			},
+		}
+		m2, err2 := Marshal(v2)
+		assert.Nil(t, err2)
+		assert.Equal(t, "kevin", m2["json"]["name"])
+		assert.Equal(t, "shanghai", m2["json"]["address"])
+		assert.Equal(t, 20, m2["json"]["age"].(int))
+		assert.Equal(t, "token_xxx", m2["header"]["token"])
+		assert.Equal(t, "v1.0", m2["header"]["version"])
+
+		type PointerHeader struct {
+			Ref *string `header:"ref"`
+		}
+		ref := "reference"
+		v3 := struct {
+			Name    string `json:"name"`
+			Address string `json:"address,options=[beijing,shanghai]"`
+			Age     int    `json:"age"`
+			PointerHeader
+		}{
+			Name:    "kevin",
+			Address: "shanghai",
+			Age:     20,
+			PointerHeader: PointerHeader{
+				Ref: &ref,
+			},
+		}
+		m3, err3 := Marshal(v3)
+		assert.Nil(t, err3)
+		assert.Equal(t, "kevin", m3["json"]["name"])
+		assert.Equal(t, "shanghai", m3["json"]["address"])
+		assert.Equal(t, 20, m3["json"]["age"].(int))
+		assert.Equal(t, "reference", *m3["header"]["ref"].(*string))
+	})
+
+	t.Run("bad anonymous", func(t *testing.T) {
+		type BaseHeader struct {
+			Token string `json:"token,options=[a,b]"`
+		}
+
+		v := struct {
+			Name    string `json:"name"`
+			Address string `json:"address,options=[beijing,shanghai]"`
+			Age     int    `json:"age"`
+			BaseHeader
+		}{
+			Name:    "kevin",
+			Address: "shanghai",
+			Age:     20,
+			BaseHeader: BaseHeader{
+				Token: "c",
+			},
+		}
+
+		_, err := Marshal(v)
+		assert.NotNil(t, err)
+	})
+}
+
 func TestMarshal_Ptr(t *testing.T) {
 	v := &struct {
 		Name      string `path:"name"`
@@ -344,3 +462,15 @@ func TestMarshal_FromString(t *testing.T) {
 	assert.Nil(t, err)
 	assert.Equal(t, "10", m["json"]["age"].(string))
 }
+
+func TestMarshal_Array(t *testing.T) {
+	v := struct {
+		H [1]int `json:"h,string"`
+	}{
+		H: [1]int{1},
+	}
+
+	m, err := Marshal(v)
+	assert.Nil(t, err)
+	assert.Equal(t, "[1]", m["json"]["h"].(string))
+}

core/mapping/unmarshaler.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"reflect"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -15,7 +16,6 @@ import (
 	"github.com/zeromicro/go-zero/core/jsonx"
 	"github.com/zeromicro/go-zero/core/lang"
 	"github.com/zeromicro/go-zero/core/proc"
-	"github.com/zeromicro/go-zero/core/stringx"
 )
 
 const (
@@ -30,7 +30,9 @@ var (
 	errValueNotSettable = errors.New("value is not settable")
 	errValueNotStruct   = errors.New("value type is not struct")
 	keyUnmarshaler      = NewUnmarshaler(defaultKeyName)
+	boolType            = reflect.TypeOf(false)
 	durationType        = reflect.TypeOf(time.Duration(0))
+	stringType          = reflect.TypeOf("")
 	cacheKeys           = make(map[string][]string)
 	cacheKeysLock       sync.Mutex
 	defaultCache        = make(map[string]any)
@@ -622,9 +624,19 @@ func (u *Unmarshaler) processFieldNotFromString(fieldType reflect.Type, value re
 
 		return u.fillSliceFromString(fieldType, value, mapValue, fullName)
 	case valueKind == reflect.String && derefedFieldType == durationType:
-		return fillDurationValue(fieldType, value, mapValue.(string))
+		v, err := convertToString(mapValue, fullName)
+		if err != nil {
+			return err
+		}
+
+		return fillDurationValue(fieldType, value, v)
 	case valueKind == reflect.String && typeKind == reflect.Struct && u.implementsUnmarshaler(fieldType):
-		return u.fillUnmarshalerStruct(fieldType, value, mapValue.(string))
+		v, err := convertToString(mapValue, fullName)
+		if err != nil {
+			return err
+		}
+
+		return u.fillUnmarshalerStruct(fieldType, value, v)
 	default:
 		return u.processFieldPrimitive(fieldType, value, mapValue, opts, fullName)
 	}
@@ -755,24 +767,24 @@ func (u *Unmarshaler) processFieldWithEnvValue(fieldType reflect.Type, value ref
 		return err
 	}
 
-	fieldKind := fieldType.Kind()
+	derefType := Deref(fieldType)
-	switch fieldKind {
+	switch derefType {
-	case reflect.Bool:
+	case boolType:
 		val, err := strconv.ParseBool(envVal)
 		if err != nil {
 			return fmt.Errorf("unmarshal field %q with environment variable, %w", fullName, err)
 		}
 
-		value.SetBool(val)
+		SetValue(fieldType, value, reflect.ValueOf(val))
 		return nil
-	case durationType.Kind():
+	case durationType:
 		if err := fillDurationValue(fieldType, value, envVal); err != nil {
 			return fmt.Errorf("unmarshal field %q with environment variable, %w", fullName, err)
 		}
 
 		return nil
-	case reflect.String:
+	case stringType:
-		value.SetString(envVal)
+		SetValue(fieldType, value, reflect.ValueOf(envVal))
 		return nil
 	default:
 		return u.processFieldPrimitiveWithJSONNumber(fieldType, value, json.Number(envVal), opts, fullName)
@@ -894,7 +906,7 @@ func (u *Unmarshaler) processNamedFieldWithValueFromString(fieldType reflect.Typ
 				valueKind.String())
 		}
 
-		if !stringx.Contains(options, checkValue) {
+		if !slices.Contains(options, checkValue) {
 			return fmt.Errorf(`value "%s" for field %q is not defined in options "%v"`,
 				mapValue, key, options)
 		}

core/mapping/unmarshaler_test.go

@@ -203,6 +203,20 @@ func TestUnmarshalDuration(t *testing.T) {
 	}
 }
 
+func TestUnmarshalDurationUnexpectedError(t *testing.T) {
+	type inner struct {
+		Duration time.Duration `key:"duration"`
+	}
+	content := "{\"duration\": 1}"
+	var m = map[string]any{}
+	err := jsonx.Unmarshal([]byte(content), &m)
+	assert.NoError(t, err)
+	var in inner
+	err = UnmarshalKey(m, &in)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "expect string")
+}
+
 func TestUnmarshalDurationDefault(t *testing.T) {
 	type inner struct {
 		Int      int           `key:"int"`
@@ -4665,6 +4679,23 @@ func TestUnmarshal_EnvInt(t *testing.T) {
 	}
 }
 
+func TestUnmarshal_EnvInt64(t *testing.T) {
+	type Value struct {
+		Age int64 `key:"age,env=TEST_NAME_INT64"`
+	}
+
+	const (
+		envName = "TEST_NAME_INT64"
+		envVal  = "88"
+	)
+	t.Setenv(envName, envVal)
+
+	var v Value
+	if assert.NoError(t, UnmarshalKey(emptyMap, &v)) {
+		assert.Equal(t, int64(88), v.Age)
+	}
+}
+
 func TestUnmarshal_EnvIntOverwrite(t *testing.T) {
 	type Value struct {
 		Age int `key:"age,env=TEST_NAME_INT"`
@@ -4770,20 +4801,33 @@ func TestUnmarshal_EnvBoolBad(t *testing.T) {
 }
 
 func TestUnmarshal_EnvDuration(t *testing.T) {
-	type Value struct {
-		Duration time.Duration `key:"duration,env=TEST_NAME_DURATION"`
-	}
-
 	const (
 		envName = "TEST_NAME_DURATION"
 		envVal  = "1s"
 	)
 	t.Setenv(envName, envVal)
 
+	t.Run("valid duration", func(t *testing.T) {
+		type Value struct {
+			Duration time.Duration `key:"duration,env=TEST_NAME_DURATION"`
+		}
+
 		var v Value
 		if assert.NoError(t, UnmarshalKey(emptyMap, &v)) {
 			assert.Equal(t, time.Second, v.Duration)
 		}
+	})
+
+	t.Run("ptr of duration", func(t *testing.T) {
+		type Value struct {
+			Duration *time.Duration `key:"duration,env=TEST_NAME_DURATION"`
+		}
+
+		var v Value
+		if assert.NoError(t, UnmarshalKey(emptyMap, &v)) {
+			assert.Equal(t, time.Second, *v.Duration)
+		}
+	})
 }
 
 func TestUnmarshal_EnvDurationBadValue(t *testing.T) {
@@ -5995,6 +6039,16 @@ func TestUnmarshal_Unmarshaler(t *testing.T) {
 		}, &v))
 		assert.Nil(t, v.Foo)
 	})
+
+	t.Run("json.Number", func(t *testing.T) {
+		v := struct {
+			Foo *mockUnmarshaler `json:"name"`
+		}{}
+		m := map[string]any{
+			"name": json.Number("123"),
+		}
+		assert.Error(t, UnmarshalJsonMap(m, &v))
+	})
 }
 
 func TestParseJsonStringValue(t *testing.T) {

core/mapping/utils.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"math"
 	"reflect"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -91,6 +92,15 @@ func ValidatePtr(v reflect.Value) error {
 	return nil
 }
 
+func convertToString(val any, fullName string) (string, error) {
+	v, ok := val.(string)
+	if !ok {
+		return "", fmt.Errorf("expect string for field %s, but got type %T", fullName, val)
+	}
+
+	return v, nil
+}
+
 func convertTypeFromString(kind reflect.Kind, str string) (any, error) {
 	switch kind {
 	case reflect.Bool:
@@ -634,11 +644,11 @@ func validateValueInOptions(val any, options []string) error {
 	if len(options) > 0 {
 		switch v := val.(type) {
 		case string:
-			if !stringx.Contains(options, v) {
+			if !slices.Contains(options, v) {
 				return fmt.Errorf(`error: value %q is not defined in options "%v"`, v, options)
 			}
 		default:
-			if !stringx.Contains(options, Repr(v)) {
+			if !slices.Contains(options, Repr(v)) {
 				return fmt.Errorf(`error: value "%v" is not defined in options "%v"`, val, options)
 			}
 		}

core/mathx/int.go

@@ -1,19 +1,13 @@
 package mathx
 
 // MaxInt returns the larger one of a and b.
+// Deprecated: use builtin max instead.
 func MaxInt(a, b int) int {
-	if a > b {
+	return max(a, b)
-		return a
-	}
-
-	return b
 }
 
 // MinInt returns the smaller one of a and b.
+// Deprecated: use builtin min instead.
 func MinInt(a, b int) int {
-	if a < b {
+	return min(a, b)
-		return a
-	}
-
-	return b
 }

core/prof/profilecenter.go

@@ -1,13 +1,12 @@
 package prof
 
 import (
-	"bytes"
+	"fmt"
-	"strconv"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/olekukonko/tablewriter"
 	"github.com/zeromicro/go-zero/core/logx"
 	"github.com/zeromicro/go-zero/core/threading"
 )
@@ -28,46 +27,15 @@ type (
 
 const flushInterval = 5 * time.Minute
 
-var (
+var pc = &profileCenter{
-	pc = &profileCenter{
 	slots: make(map[string]*profileSlot),
-	}
-	once sync.Once
-)
-
-func report(name string, duration time.Duration) {
-	updated := func() bool {
-		pc.lock.RLock()
-		defer pc.lock.RUnlock()
-
-		slot, ok := pc.slots[name]
-		if ok {
-			atomic.AddInt64(&slot.lifecount, 1)
-			atomic.AddInt64(&slot.lastcount, 1)
-			atomic.AddInt64(&slot.lifecycle, int64(duration))
-			atomic.AddInt64(&slot.lastcycle, int64(duration))
-		}
-		return ok
-	}()
-
-	if !updated {
-		func() {
-			pc.lock.Lock()
-			defer pc.lock.Unlock()
-
-			pc.slots[name] = &profileSlot{
-				lifecount: 1,
-				lastcount: 1,
-				lifecycle: int64(duration),
-				lastcycle: int64(duration),
-			}
-		}()
-	}
-
-	once.Do(flushRepeatly)
 }
 
-func flushRepeatly() {
+func init() {
+	flushRepeatedly()
+}
+
+func flushRepeatedly() {
 	threading.GoSafe(func() {
 		for {
 			time.Sleep(flushInterval)
@@ -76,42 +44,64 @@ func flushRepeatly() {
 	})
 }
 
+func report(name string, duration time.Duration) {
+	slot := loadOrStoreSlot(name, duration)
+
+	atomic.AddInt64(&slot.lifecount, 1)
+	atomic.AddInt64(&slot.lastcount, 1)
+	atomic.AddInt64(&slot.lifecycle, int64(duration))
+	atomic.AddInt64(&slot.lastcycle, int64(duration))
+}
+
+func loadOrStoreSlot(name string, duration time.Duration) *profileSlot {
+	pc.lock.RLock()
+	slot, ok := pc.slots[name]
+	pc.lock.RUnlock()
+
+	if ok {
+		return slot
+	}
+
+	pc.lock.Lock()
+	defer pc.lock.Unlock()
+
+	// double-check
+	if slot, ok = pc.slots[name]; ok {
+		return slot
+	}
+
+	slot = &profileSlot{}
+	pc.slots[name] = slot
+	return slot
+}
+
 func generateReport() string {
-	var buffer bytes.Buffer
+	var builder strings.Builder
-	buffer.WriteString("Profiling report\n")
+	builder.WriteString("Profiling report\n")
-	var data [][]string
+	builder.WriteString("QUEUE,LIFECOUNT,LIFECYCLE,LASTCOUNT,LASTCYCLE\n")
+
 	calcFn := func(total, count int64) string {
 		if count == 0 {
 			return "-"
 		}
-
 		return (time.Duration(total) / time.Duration(count)).String()
 	}
 
-	func() {
 	pc.lock.Lock()
-		defer pc.lock.Unlock()
-
 	for key, slot := range pc.slots {
-			data = append(data, []string{
+		builder.WriteString(fmt.Sprintf("%s,%d,%s,%d,%s\n",
 			key,
-				strconv.FormatInt(slot.lifecount, 10),
+			slot.lifecount,
 			calcFn(slot.lifecycle, slot.lifecount),
-				strconv.FormatInt(slot.lastcount, 10),
+			slot.lastcount,
 			calcFn(slot.lastcycle, slot.lastcount),
-			})
+		))
 
-			// reset the data for last cycle
+		// reset last cycle stats
-			slot.lastcount = 0
+		atomic.StoreInt64(&slot.lastcount, 0)
-			slot.lastcycle = 0
+		atomic.StoreInt64(&slot.lastcycle, 0)
 	}
-	}()
+	pc.lock.Unlock()
 
-	table := tablewriter.NewWriter(&buffer)
+	return builder.String()
-	table.SetHeader([]string{"QUEUE", "LIFECOUNT", "LIFECYCLE", "LASTCOUNT", "LASTCYCLE"})
-	table.SetBorder(false)
-	table.AppendBulk(data)
-	table.Render()
-
-	return buffer.String()
 }

core/prof/profilecenter_test.go

@@ -8,7 +8,6 @@ import (
 )
 
 func TestReport(t *testing.T) {
-	once.Do(func() {})
 	assert.NotContains(t, generateReport(), "foo")
 	report("foo", time.Second)
 	assert.Contains(t, generateReport(), "foo")

core/service/serviceconf.go

@@ -8,6 +8,7 @@ import (
 	"github.com/zeromicro/go-zero/core/stat"
 	"github.com/zeromicro/go-zero/core/trace"
 	"github.com/zeromicro/go-zero/internal/devserver"
+	"github.com/zeromicro/go-zero/internal/profiling"
 )
 
 const (
@@ -38,6 +39,8 @@ type (
 		Telemetry  trace.Config      `json:",optional"`
 		DevServer  DevServerConfig   `json:",optional"`
 		Shutdown   proc.ShutdownConf `json:",optional"`
+		// Profiling is the configuration for continuous profiling.
+		Profiling profiling.Config `json:",optional"`
 	}
 )
 
@@ -70,7 +73,9 @@ func (sc ServiceConf) SetUp() error {
 	if len(sc.MetricsUrl) > 0 {
 		stat.SetReportWriter(stat.NewRemoteWriter(sc.MetricsUrl))
 	}
+
 	devserver.StartAgent(sc.DevServer)
+	profiling.Start(sc.Profiling)
 
 	return nil
 }

core/service/servicegroup.go

@@ -1,9 +1,10 @@
 package service
 
 import (
+	"sync"
+
 	"github.com/zeromicro/go-zero/core/logx"
 	"github.com/zeromicro/go-zero/core/proc"
-	"github.com/zeromicro/go-zero/core/syncx"
 	"github.com/zeromicro/go-zero/core/threading"
 )
 
@@ -35,7 +36,7 @@ type (
 // NewServiceGroup returns a ServiceGroup.
 func NewServiceGroup() *ServiceGroup {
 	sg := new(ServiceGroup)
-	sg.stopOnce = syncx.Once(sg.doStop)
+	sg.stopOnce = sync.OnceFunc(sg.doStop)
 	return sg
 }
 

core/stat/alert.go

@@ -19,7 +19,6 @@ import (
 const (
 	clusterNameKey = "CLUSTER_NAME"
 	testEnv        = "test.v"
-	timeFormat     = "2006-01-02 15:04:05"
 )
 
 var (
@@ -45,7 +44,7 @@ func Report(msg string) {
 	if fn != nil {
 		reported := lessExecutor.DoOrDiscard(func() {
 			var builder strings.Builder
-			builder.WriteString(fmt.Sprintln(time.Now().Format(timeFormat)))
+			builder.WriteString(fmt.Sprintln(time.Now().Format(time.DateTime)))
 			if len(clusterName) > 0 {
 				builder.WriteString(fmt.Sprintf("cluster: %s\n", clusterName))
 			}

core/stores/redis/redis.go

@@ -609,6 +609,28 @@ func (s *Redis) GetBitCtx(ctx context.Context, key string, offset int64) (int, e
 	return int(v), nil
 }
 
+// GetDel is the implementation of redis getdel command.
+// Available since: redis version 6.2.0
+func (s *Redis) GetDel(key string) (string, error) {
+	return s.GetDelCtx(context.Background(), key)
+}
+
+// GetDelCtx is the implementation of redis getdel command.
+// Available since: redis version 6.2.0
+func (s *Redis) GetDelCtx(ctx context.Context, key string) (string, error) {
+	conn, err := getRedis(s)
+	if err != nil {
+		return "", err
+	}
+
+	val, err := conn.GetDel(ctx, key).Result()
+	if errors.Is(err, red.Nil) {
+		return "", nil
+	}
+
+	return val, err
+}
+
 // GetSet is the implementation of redis getset command.
 func (s *Redis) GetSet(key, value string) (string, error) {
 	return s.GetSetCtx(context.Background(), key, value)

core/stores/redis/redis_test.go

@@ -1071,6 +1071,34 @@ func TestRedis_Set(t *testing.T) {
 	})
 }
 
+func TestRedis_GetDel(t *testing.T) {
+	t.Run("get_del", func(t *testing.T) {
+		runOnRedis(t, func(client *Redis) {
+			val, err := newRedis(client.Addr).GetDel("hello")
+			assert.Equal(t, "", val)
+			assert.Nil(t, err)
+			err = client.Set("hello", "world")
+			assert.Nil(t, err)
+			val, err = client.Get("hello")
+			assert.Nil(t, err)
+			assert.Equal(t, "world", val)
+			val, err = client.GetDel("hello")
+			assert.Nil(t, err)
+			assert.Equal(t, "world", val)
+			val, err = client.Get("hello")
+			assert.Nil(t, err)
+			assert.Equal(t, "", val)
+		})
+	})
+
+	t.Run("get_del_with_error", func(t *testing.T) {
+		runOnRedisWithError(t, func(client *Redis) {
+			_, err := newRedis(client.Addr, badType()).GetDel("hello")
+			assert.Error(t, err)
+		})
+	})
+}
+
 func TestRedis_GetSet(t *testing.T) {
 	t.Run("set_get", func(t *testing.T) {
 		runOnRedis(t, func(client *Redis) {

core/stores/sqlx/config.go

@@ -0,0 +1,29 @@
+package sqlx
+
+import "errors"
+
+var (
+	errEmptyDatasource = errors.New("empty datasource")
+	errEmptyDriverName = errors.New("empty driver name")
+)
+
+// SqlConf defines the configuration for sqlx.
+type SqlConf struct {
+	DataSource string
+	DriverName string   `json:",default=mysql"`
+	Replicas   []string `json:",optional"`
+	Policy     string   `json:",default=round-robin,options=round-robin|random"`
+}
+
+// Validate validates the SqlxConf.
+func (sc SqlConf) Validate() error {
+	if len(sc.DataSource) == 0 {
+		return errEmptyDatasource
+	}
+
+	if len(sc.DriverName) == 0 {
+		return errEmptyDriverName
+	}
+
+	return nil
+}

core/stores/sqlx/config_test.go

@@ -0,0 +1,29 @@
+package sqlx
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/zeromicro/go-zero/core/conf"
+)
+
+func TestValidate(t *testing.T) {
+	text := []byte(`DataSource: primary:password@tcp(127.0.0.1:3306)/primary_db
+`)
+
+	var sc SqlConf
+	err := conf.LoadFromYamlBytes(text, &sc)
+	assert.Nil(t, err)
+	assert.Equal(t, "mysql", sc.DriverName)
+	assert.Equal(t, policyRoundRobin, sc.Policy)
+	assert.Nil(t, sc.Validate())
+
+	sc = SqlConf{}
+	assert.Equal(t, errEmptyDatasource, sc.Validate())
+
+	sc.DataSource = "primary:password@tcp(127.0.0.1:3306)/primary_db"
+	assert.Equal(t, errEmptyDriverName, sc.Validate())
+
+	sc.DriverName = "mysql"
+	assert.Nil(t, sc.Validate())
+}

core/stores/sqlx/orm_test.go

@@ -267,6 +267,20 @@ func TestUnmarshalRowStruct(t *testing.T) {
 		}, "select name, age from users where user=?", "anyone"), ErrNotMatchDestination)
 	})
 
+	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
+		value := new(struct {
+			Name string
+			age  int
+		})
+
+		rs := sqlmock.NewRows([]string{"name", "age"}).FromCSVString("liao,5")
+		mock.ExpectQuery("select (.+) from users where user=?").WithArgs("anyone").WillReturnRows(rs)
+
+		assert.ErrorIs(t, query(context.Background(), db, func(rows *sql.Rows) error {
+			return unmarshalRow(value, rows, true)
+		}, "select name, age from users where user=?", "anyone"), ErrNotMatchDestination)
+	})
+
 	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		rs := sqlmock.NewRows([]string{"value"}).FromCSVString("8")
 		mock.ExpectQuery("select (.+) from users where user=?").WithArgs("anyone").WillReturnRows(rs)
@@ -310,6 +324,20 @@ func TestUnmarshalRowStructWithTags(t *testing.T) {
 		}, "select name, age from users where user=?", "anyone"), ErrNotReadableValue)
 	})
 
+	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
+		value := new(struct {
+			age  int    `db:"age"`
+			Name string `db:"name"`
+		})
+
+		rs := sqlmock.NewRows([]string{"name", "age"}).FromCSVString("liao,5")
+		mock.ExpectQuery("select (.+) from users where user=?").WithArgs("anyone").WillReturnRows(rs)
+
+		assert.ErrorIs(t, query(context.Background(), db, func(rows *sql.Rows) error {
+			return unmarshalRow(value, rows, true)
+		}, "select name, age from users where user=?", "anyone"), ErrNotReadableValue)
+	})
+
 	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		var value struct {
 			Age  *int    `db:"age"`
@@ -1307,6 +1335,7 @@ func TestAnonymousStructPr(t *testing.T) {
 }
 
 func TestAnonymousStructPrError(t *testing.T) {
+	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		type Score struct {
 			Discipline string `db:"discipline"`
 			score      uint   `db:"score"`
@@ -1319,13 +1348,12 @@ func TestAnonymousStructPrError(t *testing.T) {
 			*ClassType
 			Score
 		}
+
 		var value []*struct {
 			Age int64 `db:"age"`
 			Class
 			Name string `db:"name"`
 		}
-
-	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		rs := sqlmock.NewRows([]string{
 			"name",
 			"age",
@@ -1338,10 +1366,50 @@ func TestAnonymousStructPrError(t *testing.T) {
 			AddRow("second", 3, "grade one", "chinese", "class three grade two", 99)
 		mock.ExpectQuery("select (.+) from users where user=?").
 			WithArgs("anyone").WillReturnRows(rs)
-		assert.Error(t, query(context.Background(), db, func(rows *sql.Rows) error {
+		assert.ErrorIs(t, query(context.Background(), db, func(rows *sql.Rows) error {
 			return unmarshalRows(&value, rows, true)
 		}, "select name, age, grade, discipline, class_name, score from users where user=?",
-			"anyone"))
+			"anyone"), ErrNotReadableValue)
+		if len(value) > 0 {
+			assert.Equal(t, value[0].score, 0)
+		}
+	})
+
+	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
+		type Score struct {
+			Discipline string
+			score      uint
+		}
+		type ClassType struct {
+			Grade     sql.NullString
+			ClassName *string
+		}
+		type Class struct {
+			*ClassType
+			Score
+		}
+
+		var value []*struct {
+			Age int64
+			Class
+			Name string
+		}
+		rs := sqlmock.NewRows([]string{
+			"name",
+			"age",
+			"grade",
+			"discipline",
+			"class_name",
+			"score",
+		}).
+			AddRow("first", 2, nil, "math", "experimental class", 100).
+			AddRow("second", 3, "grade one", "chinese", "class three grade two", 99)
+		mock.ExpectQuery("select (.+) from users where user=?").
+			WithArgs("anyone").WillReturnRows(rs)
+		assert.ErrorIs(t, query(context.Background(), db, func(rows *sql.Rows) error {
+			return unmarshalRows(&value, rows, true)
+		}, "select name, age, grade, discipline, class_name, score from users where user=?",
+			"anyone"), ErrNotMatchDestination)
 		if len(value) > 0 {
 			assert.Equal(t, value[0].score, 0)
 		}

core/stores/sqlx/rwstrategy.go

@@ -0,0 +1,65 @@
+package sqlx
+
+import "context"
+
+const (
+	// policyRoundRobin round-robin policy for selecting replicas.
+	policyRoundRobin = "round-robin"
+	// policyRandom random policy for selecting replicas.
+	policyRandom = "random"
+
+	// readPrimaryMode indicates that the operation is a read,
+	// but should be performed on the primary database instance.
+	//
+	// This mode is used in scenarios where data freshness and consistency are critical,
+	// such as immediately after writes or where replication lag may cause stale reads.
+	readPrimaryMode readWriteMode = "read-primary"
+
+	// readReplicaMode indicates that the operation is a read from replicas.
+	// This is suitable for scenarios where eventual consistency is acceptable,
+	// and the goal is to offload traffic from the primary and improve read scalability.
+	readReplicaMode readWriteMode = "read-replica"
+
+	// writeMode indicates that the operation is a write operation (to primary).
+	writeMode readWriteMode = "write"
+
+	// notSpecifiedMode indicates that the read/write mode is not specified.
+	notSpecifiedMode readWriteMode = ""
+)
+
+type readWriteModeKey struct{}
+
+// WithReadPrimary sets the context to read-primary mode.
+func WithReadPrimary(ctx context.Context) context.Context {
+	return context.WithValue(ctx, readWriteModeKey{}, readPrimaryMode)
+}
+
+// WithReadReplica sets the context to read-replica mode.
+func WithReadReplica(ctx context.Context) context.Context {
+	return context.WithValue(ctx, readWriteModeKey{}, readReplicaMode)
+}
+
+// WithWrite sets the context to write mode, indicating that the operation is a write operation.
+func WithWrite(ctx context.Context) context.Context {
+	return context.WithValue(ctx, readWriteModeKey{}, writeMode)
+}
+
+type readWriteMode string
+
+func (m readWriteMode) isValid() bool {
+	return m == readPrimaryMode || m == readReplicaMode || m == writeMode
+}
+
+func getReadWriteMode(ctx context.Context) readWriteMode {
+	if mode := ctx.Value(readWriteModeKey{}); mode != nil {
+		if v, ok := mode.(readWriteMode); ok && v.isValid() {
+			return v
+		}
+	}
+
+	return notSpecifiedMode
+}
+
+func usePrimary(ctx context.Context) bool {
+	return getReadWriteMode(ctx) != readReplicaMode
+}

core/stores/sqlx/rwstrategy_test.go

@@ -0,0 +1,142 @@
+package sqlx
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsValid(t *testing.T) {
+	testCases := []struct {
+		name     string
+		mode     readWriteMode
+		expected bool
+	}{
+		{
+			name:     "valid read-primary mode",
+			mode:     readPrimaryMode,
+			expected: true,
+		},
+		{
+			name:     "valid read-replica mode",
+			mode:     readReplicaMode,
+			expected: true,
+		},
+		{
+			name:     "valid write mode",
+			mode:     writeMode,
+			expected: true,
+		},
+		{
+			name:     "not specified mode (empty)",
+			mode:     notSpecifiedMode,
+			expected: false,
+		},
+		{
+			name:     "invalid custom string",
+			mode:     readWriteMode("delete"),
+			expected: false,
+		},
+		{
+			name:     "case sensitive check",
+			mode:     readWriteMode("READ"),
+			expected: false,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			actual := tc.mode.isValid()
+			assert.Equal(t, tc.expected, actual)
+		})
+	}
+}
+
+func TestWithReadMode(t *testing.T) {
+	ctx := context.Background()
+	readPrimaryCtx := WithReadPrimary(ctx)
+
+	val := readPrimaryCtx.Value(readWriteModeKey{})
+	assert.Equal(t, readPrimaryMode, val)
+
+	readReplicaCtx := WithReadReplica(ctx)
+	val = readReplicaCtx.Value(readWriteModeKey{})
+	assert.Equal(t, readReplicaMode, val)
+}
+
+func TestWithWriteMode(t *testing.T) {
+	ctx := context.Background()
+	writeCtx := WithWrite(ctx)
+
+	val := writeCtx.Value(readWriteModeKey{})
+	assert.Equal(t, writeMode, val)
+}
+
+func TestGetReadWriteMode(t *testing.T) {
+	t.Run("valid read-primary mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, readPrimaryMode)
+		assert.Equal(t, readPrimaryMode, getReadWriteMode(ctx))
+	})
+
+	t.Run("valid read-replica mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, readReplicaMode)
+		assert.Equal(t, readReplicaMode, getReadWriteMode(ctx))
+	})
+
+	t.Run("valid write mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, writeMode)
+		assert.Equal(t, writeMode, getReadWriteMode(ctx))
+	})
+
+	t.Run("invalid mode value (wrong type)", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, "not-a-mode")
+		assert.Equal(t, notSpecifiedMode, getReadWriteMode(ctx))
+	})
+
+	t.Run("invalid mode value (wrong value)", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, readWriteMode("delete"))
+		assert.Equal(t, notSpecifiedMode, getReadWriteMode(ctx))
+	})
+
+	t.Run("no mode set", func(t *testing.T) {
+		ctx := context.Background()
+		assert.Equal(t, notSpecifiedMode, getReadWriteMode(ctx))
+	})
+}
+
+func TestUsePrimary(t *testing.T) {
+	t.Run("context with read-replica mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, readReplicaMode)
+		assert.False(t, usePrimary(ctx))
+	})
+
+	t.Run("context with read-primary mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, readPrimaryMode)
+		assert.True(t, usePrimary(ctx))
+	})
+
+	t.Run("context with write mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, writeMode)
+		assert.True(t, usePrimary(ctx))
+	})
+
+	t.Run("context with invalid mode", func(t *testing.T) {
+		ctx := context.WithValue(context.Background(), readWriteModeKey{}, readWriteMode("invalid"))
+		assert.True(t, usePrimary(ctx))
+	})
+
+	t.Run("context with no mode set", func(t *testing.T) {
+		ctx := context.Background()
+		assert.True(t, usePrimary(ctx))
+	})
+}
+
+func TestWithModeTwice(t *testing.T) {
+	ctx := context.Background()
+	ctx = WithReadPrimary(ctx)
+	writeCtx := WithWrite(ctx)
+
+	val := writeCtx.Value(readWriteModeKey{})
+	assert.Equal(t, writeMode, val)
+}

core/stores/sqlx/sqlconn.go

@@ -4,6 +4,9 @@ import (
 	"context"
 	"database/sql"
 	"errors"
+	"fmt"
+	"math/rand"
+	"sync/atomic"
 
 	"github.com/zeromicro/go-zero/core/breaker"
 	"github.com/zeromicro/go-zero/core/errorx"
@@ -52,9 +55,10 @@ type (
 		beginTx  beginnable
 		brk      breaker.Breaker
 		accept   breaker.Acceptable
+		index    uint32
 	}
 
-	connProvider func() (*sql.DB, error)
+	connProvider func(ctx context.Context) (*sql.DB, error)
 
 	sessionConn interface {
 		Exec(query string, args ...any) (sql.Result, error)
@@ -64,10 +68,41 @@ type (
 	}
 )
 
+// MustNewConn returns a SqlConn with the given SqlConf.
+func MustNewConn(c SqlConf, opts ...SqlOption) SqlConn {
+	conn, err := NewConn(c, opts...)
+	if err != nil {
+		logx.Must(err)
+	}
+
+	return conn
+}
+
+// NewConn returns a SqlConn with the given SqlConf.
+func NewConn(c SqlConf, opts ...SqlOption) (SqlConn, error) {
+	if err := c.Validate(); err != nil {
+		return nil, err
+	}
+
+	conn := &commonSqlConn{
+		onError: func(ctx context.Context, err error) {
+			logInstanceError(ctx, c.DataSource, err)
+		},
+		beginTx: begin,
+		brk:     breaker.NewBreaker(),
+	}
+	for _, opt := range opts {
+		opt(conn)
+	}
+	conn.connProv = getConnProvider(conn, c.DriverName, c.DataSource, c.Policy, c.Replicas)
+
+	return conn, nil
+}
+
 // NewSqlConn returns a SqlConn with given driver name and datasource.
 func NewSqlConn(driverName, datasource string, opts ...SqlOption) SqlConn {
 	conn := &commonSqlConn{
-		connProv: func() (*sql.DB, error) {
+		connProv: func(context.Context) (*sql.DB, error) {
 			return getSqlConn(driverName, datasource)
 		},
 		onError: func(ctx context.Context, err error) {
@@ -87,7 +122,7 @@ func NewSqlConn(driverName, datasource string, opts ...SqlOption) SqlConn {
 // Use it with caution; it's provided for other ORM to interact with.
 func NewSqlConnFromDB(db *sql.DB, opts ...SqlOption) SqlConn {
 	conn := &commonSqlConn{
-		connProv: func() (*sql.DB, error) {
+		connProv: func(ctx context.Context) (*sql.DB, error) {
 			return db, nil
 		},
 		onError: func(ctx context.Context, err error) {
@@ -123,7 +158,7 @@ func (db *commonSqlConn) ExecCtx(ctx context.Context, q string, args ...any) (
 
 	err = db.brk.DoWithAcceptableCtx(ctx, func() error {
 		var conn *sql.DB
-		conn, err = db.connProv()
+		conn, err = db.connProv(ctx)
 		if err != nil {
 			db.onError(ctx, err)
 			return err
@@ -151,7 +186,7 @@ func (db *commonSqlConn) PrepareCtx(ctx context.Context, query string) (stmt Stm
 
 	err = db.brk.DoWithAcceptableCtx(ctx, func() error {
 		var conn *sql.DB
-		conn, err = db.connProv()
+		conn, err = db.connProv(ctx)
 		if err != nil {
 			db.onError(ctx, err)
 			return err
@@ -242,7 +277,7 @@ func (db *commonSqlConn) QueryRowsPartialCtx(ctx context.Context, v any,
 }
 
 func (db *commonSqlConn) RawDB() (*sql.DB, error) {
-	return db.connProv()
+	return db.connProv(context.Background())
 }
 
 func (db *commonSqlConn) Transact(fn func(Session) error) error {
@@ -288,7 +323,7 @@ func (db *commonSqlConn) queryRows(ctx context.Context, scanner func(*sql.Rows)
 	q string, args ...any) (err error) {
 	var scanFailed bool
 	err = db.brk.DoWithAcceptableCtx(ctx, func() error {
-		conn, err := db.connProv()
+		conn, err := db.connProv(ctx)
 		if err != nil {
 			db.onError(ctx, err)
 			return err
@@ -311,6 +346,38 @@ func (db *commonSqlConn) queryRows(ctx context.Context, scanner func(*sql.Rows)
 	return
 }
 
+func getConnProvider(sc *commonSqlConn, driverName, datasource, policy string, replicas []string) connProvider {
+	return func(ctx context.Context) (*sql.DB, error) {
+		replicaCount := len(replicas)
+
+		if replicaCount == 0 || usePrimary(ctx) {
+			return getSqlConn(driverName, datasource)
+		}
+
+		var dsn string
+
+		if replicaCount == 1 {
+			dsn = replicas[0]
+		} else {
+			if len(policy) == 0 {
+				policy = policyRoundRobin
+			}
+
+			switch policy {
+			case policyRandom:
+				dsn = replicas[rand.Intn(replicaCount)]
+			case policyRoundRobin:
+				index := atomic.AddUint32(&sc.index, 1) - 1
+				dsn = replicas[index%uint32(replicaCount)]
+			default:
+				return nil, fmt.Errorf("unknown policy: %s", policy)
+			}
+		}
+
+		return getSqlConn(driverName, dsn)
+	}
+}
+
 // WithAcceptable returns a SqlOption that setting the acceptable function.
 // acceptable is the func to check if the error can be accepted.
 func WithAcceptable(acceptable func(err error) bool) SqlOption {

core/stores/sqlx/sqlconn_test.go

@@ -1,6 +1,7 @@
 package sqlx
 
 import (
+	"context"
 	"database/sql"
 	"errors"
 	"io"
@@ -98,7 +99,7 @@ func TestSqlConn_RawDB(t *testing.T) {
 func TestSqlConn_Errors(t *testing.T) {
 	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		conn := NewSqlConnFromDB(db)
-		conn.(*commonSqlConn).connProv = func() (*sql.DB, error) {
+		conn.(*commonSqlConn).connProv = func(ctx context.Context) (*sql.DB, error) {
 			return nil, errors.New("error")
 		}
 		_, err := conn.Prepare("any")
@@ -138,6 +139,148 @@ func TestSqlConn_Errors(t *testing.T) {
 	})
 }
 
+func TestConfigSqlConn(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	assert.NotNil(t, db)
+	assert.NotNil(t, mock)
+	assert.Nil(t, err)
+	connManager.Inject(mockedDatasource, db)
+	mock.ExpectExec("any")
+	mock.ExpectQuery("any").WillReturnRows(sqlmock.NewRows([]string{"foo"}))
+
+	conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+	conn := MustNewConn(conf, withMysqlAcceptable())
+
+	_, err = conn.Exec("any", "value")
+	assert.NotNil(t, err)
+	_, err = conn.Prepare("any")
+	assert.NotNil(t, err)
+
+	var val string
+	assert.NotNil(t, conn.QueryRow(&val, "any"))
+	assert.NotNil(t, conn.QueryRowPartial(&val, "any"))
+	assert.NotNil(t, conn.QueryRows(&val, "any"))
+	assert.NotNil(t, conn.QueryRowsPartial(&val, "any"))
+}
+
+func TestConfigSqlConnStatement(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	assert.NotNil(t, db)
+	assert.NotNil(t, mock)
+	assert.Nil(t, err)
+	connManager.Inject(mockedDatasource, db)
+
+	mock.ExpectPrepare("any")
+	mock.ExpectExec("any").WillReturnResult(sqlmock.NewResult(2, 3))
+	mock.ExpectPrepare("any")
+	row := sqlmock.NewRows([]string{"foo"}).AddRow("bar")
+	mock.ExpectQuery("any").WillReturnRows(row)
+
+	conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+	conn := MustNewConn(conf, withMysqlAcceptable())
+	stmt, err := conn.Prepare("any")
+	assert.NoError(t, err)
+
+	res, err := stmt.Exec()
+	assert.NoError(t, err)
+	lastInsertID, err := res.LastInsertId()
+	assert.NoError(t, err)
+	assert.Equal(t, int64(2), lastInsertID)
+	rowsAffected, err := res.RowsAffected()
+	assert.NoError(t, err)
+	assert.Equal(t, int64(3), rowsAffected)
+
+	stmt, err = conn.Prepare("any")
+	assert.NoError(t, err)
+
+	var val string
+	err = stmt.QueryRow(&val)
+	assert.NoError(t, err)
+	assert.Equal(t, "bar", val)
+
+	mock.ExpectPrepare("any")
+	rows := sqlmock.NewRows([]string{"any"}).AddRow("foo").AddRow("bar")
+	mock.ExpectQuery("any").WillReturnRows(rows)
+
+	stmt, err = conn.Prepare("any")
+	assert.NoError(t, err)
+
+	var vals []string
+	assert.NoError(t, stmt.QueryRowsPartial(&vals))
+	assert.ElementsMatch(t, []string{"foo", "bar"}, vals)
+}
+
+func TestConfigSqlConnQuery(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	assert.NotNil(t, db)
+	assert.NotNil(t, mock)
+	assert.Nil(t, err)
+	connManager.Inject(mockedDatasource, db)
+
+	t.Run("QueryRow", func(t *testing.T) {
+		mock.ExpectQuery("any").WillReturnRows(sqlmock.NewRows([]string{"foo"}).AddRow("bar"))
+		conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+		conn := MustNewConn(conf)
+		var val string
+		assert.NoError(t, conn.QueryRow(&val, "any"))
+		assert.Equal(t, "bar", val)
+	})
+
+	t.Run("QueryRowPartial", func(t *testing.T) {
+		mock.ExpectQuery("any").WillReturnRows(sqlmock.NewRows([]string{"foo"}).AddRow("bar"))
+		conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+		conn := MustNewConn(conf)
+		var val string
+		assert.NoError(t, conn.QueryRowPartial(&val, "any"))
+		assert.Equal(t, "bar", val)
+	})
+
+	t.Run("QueryRows", func(t *testing.T) {
+		mock.ExpectQuery("any").WillReturnRows(sqlmock.NewRows([]string{"any"}).AddRow("foo").AddRow("bar"))
+		conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+		conn := MustNewConn(conf)
+		var vals []string
+		assert.NoError(t, conn.QueryRows(&vals, "any"))
+		assert.ElementsMatch(t, []string{"foo", "bar"}, vals)
+	})
+
+	t.Run("QueryRowsPartial", func(t *testing.T) {
+		mock.ExpectQuery("any").WillReturnRows(sqlmock.NewRows([]string{"any"}).AddRow("foo").AddRow("bar"))
+		conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+		conn := MustNewConn(conf)
+		var vals []string
+		assert.NoError(t, conn.QueryRowsPartial(&vals, "any"))
+		assert.ElementsMatch(t, []string{"foo", "bar"}, vals)
+	})
+}
+
+func TestConfigSqlConnErr(t *testing.T) {
+	t.Run("panic on empty config", func(t *testing.T) {
+		original := logx.ExitOnFatal.True()
+		logx.ExitOnFatal.Set(false)
+		defer logx.ExitOnFatal.Set(original)
+
+		assert.Panics(t, func() {
+			MustNewConn(SqlConf{})
+		})
+	})
+	t.Run("on error", func(t *testing.T) {
+		db, mock, err := sqlmock.New()
+		assert.NotNil(t, db)
+		assert.NotNil(t, mock)
+		assert.Nil(t, err)
+		connManager.Inject(mockedDatasource, db)
+
+		conf := SqlConf{DataSource: mockedDatasource, DriverName: mysqlDriverName}
+		conn := MustNewConn(conf)
+		conn.(*commonSqlConn).connProv = func(ctx context.Context) (*sql.DB, error) {
+			return nil, errors.New("error")
+		}
+		_, err = conn.Prepare("any")
+		assert.Error(t, err)
+	})
+}
+
 func TestStatement(t *testing.T) {
 	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		mock.ExpectPrepare("any").WillBeClosed()
@@ -303,6 +446,93 @@ func TestWithAcceptable(t *testing.T) {
 	assert.True(t, conn.accept(acceptableErr3))
 }
 
+func TestProvider(t *testing.T) {
+	defer func() {
+		_ = connManager.Close()
+	}()
+
+	primaryDSN := "primary:password@tcp(127.0.0.1:3306)/primary_db"
+	replicasDSN := []string{
+		"replica_one:pwd@tcp(localhost:3306)/replica_one",
+		"replica_two:pwd@tcp(localhost:3306)/replica_two",
+		"replica_three:pwd@tcp(localhost:3306)/replica_three",
+	}
+
+	primaryDB, err := connManager.GetResource(primaryDSN, func() (io.Closer, error) { return sql.Open(mysqlDriverName, primaryDSN) })
+	assert.Nil(t, err)
+	assert.NotNil(t, primaryDB)
+	replicaOneDB, err := connManager.GetResource(replicasDSN[0], func() (io.Closer, error) { return sql.Open(mysqlDriverName, replicasDSN[0]) })
+	assert.Nil(t, err)
+	assert.NotNil(t, replicaOneDB)
+	replicaTwoDB, err := connManager.GetResource(replicasDSN[1], func() (io.Closer, error) { return sql.Open(mysqlDriverName, replicasDSN[1]) })
+	assert.Nil(t, err)
+	assert.NotNil(t, replicaTwoDB)
+	replicaThreeDB, err := connManager.GetResource(replicasDSN[2], func() (io.Closer, error) { return sql.Open(mysqlDriverName, replicasDSN[2]) })
+	assert.Nil(t, err)
+	assert.NotNil(t, replicaThreeDB)
+
+	sc := &commonSqlConn{}
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, policyRoundRobin, nil)
+
+	ctx := context.Background()
+	db, err := sc.connProv(ctx)
+	assert.Nil(t, err)
+	assert.Equal(t, primaryDB, db)
+
+	ctx = WithWrite(ctx)
+	db, err = sc.connProv(ctx)
+	assert.Nil(t, err)
+	assert.Equal(t, primaryDB, db)
+
+	ctx = WithReadPrimary(ctx)
+	db, err = sc.connProv(ctx)
+	assert.Nil(t, err)
+	assert.Equal(t, primaryDB, db)
+
+	// no mode set, should return primary
+	ctx = context.Background()
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, policyRoundRobin, replicasDSN)
+	db, err = sc.connProv(ctx)
+	assert.Nil(t, err)
+	assert.Equal(t, primaryDB, db)
+
+	ctx = WithReadReplica(ctx)
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, policyRoundRobin, []string{replicasDSN[0]})
+	db, err = sc.connProv(ctx)
+	assert.Nil(t, err)
+	assert.Equal(t, replicaOneDB, db)
+
+	// default policy is round-robin
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, policyRoundRobin, replicasDSN)
+	replicas := []io.Closer{replicaOneDB, replicaTwoDB, replicaThreeDB}
+	for i := 0; i < len(replicasDSN); i++ {
+		db, err = sc.connProv(ctx)
+		assert.Nil(t, err)
+		assert.Equal(t, replicas[i], db)
+	}
+
+	// random policy
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, policyRandom, replicasDSN)
+	for i := 0; i < len(replicasDSN); i++ {
+		db, err = sc.connProv(ctx)
+		assert.Nil(t, err)
+		assert.Contains(t, replicas, db)
+	}
+
+	// unknown policy
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, "unknown", replicasDSN)
+	_, err = sc.connProv(ctx)
+	assert.NotNil(t, err)
+
+	// empty policy transforms to round-robin
+	sc.connProv = getConnProvider(sc, mysqlDriverName, primaryDSN, "", replicasDSN)
+	for i := 0; i < len(replicasDSN); i++ {
+		db, err = sc.connProv(ctx)
+		assert.Nil(t, err)
+		assert.Equal(t, replicas[i], db)
+	}
+}
+
 func buildConn() (mock sqlmock.Sqlmock, err error) {
 	_, err = connManager.GetResource(mockedDatasource, func() (io.Closer, error) {
 		var db *sql.DB

core/stores/sqlx/sqlmanager.go

@@ -27,7 +27,7 @@ func getCachedSqlConn(driverName, server string) (*sql.DB, error) {
 			return nil, err
 		}
 
-		if driverName != mysqlDriverName {
+		if driverName == mysqlDriverName {
 			if cfg, e := mysql.ParseDSN(server); e != nil {
 				// if cannot parse, don't collect the metrics
 				logx.Error(e)

core/stores/sqlx/tx.go

@@ -156,7 +156,7 @@ func begin(db *sql.DB) (trans, error) {
 
 func transact(ctx context.Context, db *commonSqlConn, b beginnable,
 	fn func(context.Context, Session) error) (err error) {
-	conn, err := db.connProv()
+	conn, err := db.connProv(ctx)
 	if err != nil {
 		db.onError(ctx, err)
 		return err

core/stores/sqlx/tx_test.go

@@ -117,7 +117,7 @@ func TestTxExceptions(t *testing.T) {
 
 	dbtest.RunTest(t, func(db *sql.DB, mock sqlmock.Sqlmock) {
 		conn := &commonSqlConn{
-			connProv: func() (*sql.DB, error) {
+			connProv: func(ctx context.Context) (*sql.DB, error) {
 				return nil, errors.New("foo")
 			},
 			beginTx: begin,

core/stringx/strings.go

@@ -2,6 +2,7 @@ package stringx
 
 import (
 	"errors"
+	"slices"
 	"unicode"
 
 	"github.com/zeromicro/go-zero/core/lang"
@@ -15,14 +16,9 @@ var (
 )
 
 // Contains checks if str is in list.
+// Deprecated: use slices.Contains instead.
 func Contains(list []string, str string) bool {
-	for _, each := range list {
+	return slices.Contains(list, str)
-		if each == str {
-			return true
-		}
-	}
-
-	return false
 }
 
 // Filter filters chars from s with given filter function.
@@ -123,11 +119,7 @@ func Remove(strings []string, strs ...string) []string {
 // Reverse reverses s.
 func Reverse(s string) string {
 	runes := []rune(s)
-
+	slices.Reverse(runes)
-	for from, to := 0, len(runes)-1; from < to; from, to = from+1, to-1 {
-		runes[from], runes[to] = runes[to], runes[from]
-	}
-
 	return string(runes)
 }
 

core/stringx/strings_test.go

@@ -7,6 +7,28 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+func TestContainsString(t *testing.T) {
+	cases := []struct {
+		slice  []string
+		value  string
+		expect bool
+	}{
+		{[]string{"1"}, "1", true},
+		{[]string{"1"}, "2", false},
+		{[]string{"1", "2"}, "1", true},
+		{[]string{"1", "2"}, "3", false},
+		{nil, "3", false},
+		{nil, "", false},
+	}
+
+	for _, each := range cases {
+		t.Run(path.Join(each.slice...), func(t *testing.T) {
+			actual := Contains(each.slice, each.value)
+			assert.Equal(t, each.expect, actual)
+		})
+	}
+}
+
 func TestNotEmpty(t *testing.T) {
 	cases := []struct {
 		args   []string
@@ -41,28 +63,6 @@ func TestNotEmpty(t *testing.T) {
 	}
 }
 
-func TestContainsString(t *testing.T) {
-	cases := []struct {
-		slice  []string
-		value  string
-		expect bool
-	}{
-		{[]string{"1"}, "1", true},
-		{[]string{"1"}, "2", false},
-		{[]string{"1", "2"}, "1", true},
-		{[]string{"1", "2"}, "3", false},
-		{nil, "3", false},
-		{nil, "", false},
-	}
-
-	for _, each := range cases {
-		t.Run(path.Join(each.slice...), func(t *testing.T) {
-			actual := Contains(each.slice, each.value)
-			assert.Equal(t, each.expect, actual)
-		})
-	}
-}
-
 func TestFilter(t *testing.T) {
 	cases := []struct {
 		input   string

core/syncx/once.go

@@ -3,9 +3,7 @@ package syncx
 import "sync"
 
 // Once returns a func that guarantees fn can only called once.
+// Deprecated: use sync.OnceFunc instead.
 func Once(fn func()) func() {
-	once := new(sync.Once)
+	return sync.OnceFunc(fn)
-	return func() {
-		once.Do(fn)
-	}
 }

core/utils/version.go

@@ -1,10 +1,10 @@
 package utils
 
 import (
+	"cmp"
 	"strconv"
 	"strings"
 
-	"github.com/zeromicro/go-zero/core/mathx"
 	"github.com/zeromicro/go-zero/core/stringx"
 )
 
@@ -39,7 +39,7 @@ func compare(v1, v2 string) int {
 	fields1, fields2 := strings.Split(v1, "."), strings.Split(v2, ".")
 	ver1, ver2 := strsToInts(fields1), strsToInts(fields2)
 	ver1len, ver2len := len(ver1), len(ver2)
-	shorter := mathx.MinInt(ver1len, ver2len)
+	shorter := min(ver1len, ver2len)
 
 	for i := 0; i < shorter; i++ {
 		if ver1[i] == ver2[i] {
@@ -50,14 +50,7 @@ func compare(v1, v2 string) int {
 			return 1
 		}
 	}
-
+	return cmp.Compare(ver1len, ver2len)
-	if ver1len < ver2len {
-		return -1
-	} else if ver1len == ver2len {
-		return 0
-	} else {
-		return 1
-	}
 }
 
 func strsToInts(strs []string) []int64 {

gateway/server_test.go

@@ -201,6 +201,13 @@ func TestHttpToHttp(t *testing.T) {
 		assert.NoError(t, err)
 		assert.Equal(t, http.StatusNotFound, resp.StatusCode)
 	})
+
+	t.Run("method not allowed", func(t *testing.T) {
+		resp, err := httpc.Do(context.Background(), http.MethodPost,
+			"http://localhost:18882/api/ping", nil)
+		assert.NoError(t, err)
+		assert.Equal(t, http.StatusMethodNotAllowed, resp.StatusCode)
+	})
 }
 
 func TestHttpToHttpBadUpstream(t *testing.T) {

go.mod

@@ -4,25 +4,25 @@ go 1.21
 
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.2
-	github.com/alicebob/miniredis/v2 v2.34.0
+	github.com/alicebob/miniredis/v2 v2.35.0
 	github.com/fatih/color v1.18.0
-	github.com/fullstorydev/grpcurl v1.9.2
+	github.com/fullstorydev/grpcurl v1.9.3
 	github.com/go-sql-driver/mysql v1.9.0
-	github.com/golang-jwt/jwt/v4 v4.5.1
+	github.com/golang-jwt/jwt/v4 v4.5.2
 	github.com/golang/mock v1.6.0
 	github.com/golang/protobuf v1.5.4
 	github.com/google/uuid v1.6.0
-	github.com/jackc/pgx/v5 v5.7.2
+	github.com/grafana/pyroscope-go v1.2.2
+	github.com/jackc/pgx/v5 v5.7.4
 	github.com/jhump/protoreflect v1.17.0
-	github.com/olekukonko/tablewriter v0.0.5
 	github.com/pelletier/go-toml/v2 v2.2.2
-	github.com/prometheus/client_golang v1.21.0
+	github.com/prometheus/client_golang v1.21.1
-	github.com/redis/go-redis/v9 v9.7.1
+	github.com/redis/go-redis/v9 v9.11.0
 	github.com/spaolacci/murmur3 v1.1.0
 	github.com/stretchr/testify v1.10.0
 	go.etcd.io/etcd/api/v3 v3.5.15
 	go.etcd.io/etcd/client/v3 v3.5.15
-	go.mongodb.org/mongo-driver v1.17.3
+	go.mongodb.org/mongo-driver v1.17.4
 	go.opentelemetry.io/otel v1.24.0
 	go.opentelemetry.io/otel/exporters/jaeger v1.17.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.24.0
@@ -50,7 +50,6 @@ require (
 
 require (
 	filippo.io/edwards25519 v1.1.0 // indirect
-	github.com/alicebob/gopher-json v0.0.0-20230218143504-906a9b012302 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bufbuild/protocompile v0.14.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
@@ -73,6 +72,7 @@ require (
 	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/grafana/pyroscope-go/godeltaprof v0.1.8 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
 	github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect

go.sum

@@ -2,10 +2,8 @@ filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/DATA-DOG/go-sqlmock v1.5.2 h1:OcvFkGmslmlZibjAjaHm3L//6LiuBgolP7OputlJIzU=
 github.com/DATA-DOG/go-sqlmock v1.5.2/go.mod h1:88MAG/4G7SMwSE3CeA0ZKzrT5CiOU3OJ+JlNzwDqpNU=
-github.com/alicebob/gopher-json v0.0.0-20230218143504-906a9b012302 h1:uvdUDbHQHO85qeSydJtItA4T55Pw6BtAejd0APRJOCE=
+github.com/alicebob/miniredis/v2 v2.35.0 h1:QwLphYqCEAo1eu1TqPRN2jgVMPBweeQcR21jeqDCONI=
-github.com/alicebob/gopher-json v0.0.0-20230218143504-906a9b012302/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
+github.com/alicebob/miniredis/v2 v2.35.0/go.mod h1:TcL7YfarKPGDAthEtl5NBeHZfeUQj6OXMm/+iu5cLMM=
-github.com/alicebob/miniredis/v2 v2.34.0 h1:mBFWMaJSNL9RwdGRyEDoAAv8OQc5UlEhLDQggTglU/0=
-github.com/alicebob/miniredis/v2 v2.34.0/go.mod h1:kWShP4b58T1CW0Y5dViCd5ztzrDqRWqM3nksiyXk5s8=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -40,8 +38,8 @@ github.com/envoyproxy/protoc-gen-validate v1.0.4 h1:gVPz/FMfvh57HdSJQyvBtF00j8JU
 github.com/envoyproxy/protoc-gen-validate v1.0.4/go.mod h1:qys6tmnRsYrQqIhm2bvKZH4Blx/1gTIZ2UKVY1M+Yew=
 github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
 github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
-github.com/fullstorydev/grpcurl v1.9.2 h1:ObqVQTZW7aFnhuqQoppUrvep2duMBanB0UYK2Mm8euo=
+github.com/fullstorydev/grpcurl v1.9.3 h1:PC1Xi3w+JAvEE2Tg2Gf2RfVgPbf9+tbuQr1ZkyVU3jk=
-github.com/fullstorydev/grpcurl v1.9.2/go.mod h1:jLfcF55HAz6TYIJY9xFFWgsl0D7o2HlxA5Z4lUG0Tdo=
+github.com/fullstorydev/grpcurl v1.9.3/go.mod h1:/b4Wxe8bG6ndAjlfSUjwseQReUDUvBJiFEB7UllOlUE=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
@@ -62,8 +60,8 @@ github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
-github.com/golang-jwt/jwt/v4 v4.5.1 h1:JdqV9zKUdtaa9gdPlywC3aeoEsR681PlKC+4F5gQgeo=
+github.com/golang-jwt/jwt/v4 v4.5.2 h1:YtQM7lnr8iZ+j5q71MGKkNw9Mn7AjHM68uc9g5fXeUI=
-github.com/golang-jwt/jwt/v4 v4.5.1/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/golang-jwt/jwt/v4 v4.5.2/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
 github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
 github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
@@ -82,6 +80,10 @@ github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 h1:K6RDEckDVWvDI9JAJY
 github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/grafana/pyroscope-go v1.2.2 h1:uvKCyZMD724RkaCEMrSTC38Yn7AnFe8S2wiAIYdDPCE=
+github.com/grafana/pyroscope-go v1.2.2/go.mod h1:zzT9QXQAp2Iz2ZdS216UiV8y9uXJYQiGE1q8v1FyhqU=
+github.com/grafana/pyroscope-go/godeltaprof v0.1.8 h1:iwOtYXeeVSAeYefJNaxDytgjKtUuKQbJqgAIjlnicKg=
+github.com/grafana/pyroscope-go/godeltaprof v0.1.8/go.mod h1:2+l7K7twW49Ct4wFluZD3tZ6e0SjanjcUUBPVD/UuGU=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 h1:bkypFPDjIYGfCYD5mRBvpqxfYX1YCS1PXdKYWi8FsN0=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0/go.mod h1:P+Lt/0by1T8bfcF3z737NnSbmxQAppXMRziHUxPOC8k=
 github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 h1:2VTzZjLZBgl62/EtslCrtky5vbi9dd7HrQPQIx6wqiw=
@@ -90,8 +92,8 @@ github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsI
 github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
 github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
 github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
-github.com/jackc/pgx/v5 v5.7.2 h1:mLoDLV6sonKlvjIEsV56SkWNCnuNv531l94GaIzO+XI=
+github.com/jackc/pgx/v5 v5.7.4 h1:9wKznZrhWa2QiHL+NjTSPP6yjl3451BX3imWDnokYlg=
-github.com/jackc/pgx/v5 v5.7.2/go.mod h1:ncY89UGWxg82EykZUwSpUKEfccBGGYq1xjrOpsbsfGQ=
+github.com/jackc/pgx/v5 v5.7.4/go.mod h1:ncY89UGWxg82EykZUwSpUKEfccBGGYq1xjrOpsbsfGQ=
 github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
 github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
 github.com/jhump/protoreflect v1.17.0 h1:qOEr613fac2lOuTgWN4tPAtLL7fUSbuJL5X5XumQh94=
@@ -121,7 +123,6 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
 github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -135,8 +136,6 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32 h1:W6apQkHrMkS0Muv8G/TipAy/FJl/rCYT0+EuS8+Z0z4=
 github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32/go.mod h1:9wM+0iRr9ahx58uYLpLIr5fm8diHn0JbqRycJi6w0Ms=
-github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
-github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/onsi/ginkgo/v2 v2.13.0 h1:0jY9lJquiL8fcf3M4LAXN5aMlS/b2BV86HFFPCPMgE4=
 github.com/onsi/ginkgo/v2 v2.13.0/go.mod h1:TE309ZR8s5FsKKpuB1YAQYBzCaAfUgatB/xlT/ETL/o=
 github.com/onsi/gomega v1.29.0 h1:KIA/t2t5UBzoirT4H9tsML45GEbo3ouUnBHsCfD2tVg=
@@ -151,16 +150,16 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prashantv/gostub v1.1.0 h1:BTyx3RfQjRHnUWaGF9oQos79AlQ5k8WNktv7VGvVH4g=
 github.com/prashantv/gostub v1.1.0/go.mod h1:A5zLQHz7ieHGG7is6LLXLz7I8+3LZzsrV0P1IAHhP5U=
-github.com/prometheus/client_golang v1.21.0 h1:DIsaGmiaBkSangBgMtWdNfxbMNdku5IK6iNhrEqWvdA=
+github.com/prometheus/client_golang v1.21.1 h1:DOvXXTqVzvkIewV/CDPFdejpMCGeMcbGCQ8YOmu+Ibk=
-github.com/prometheus/client_golang v1.21.0/go.mod h1:U9NM32ykUErtVBxdvD3zfi+EuFkkaBvMb09mIfe0Zgg=
+github.com/prometheus/client_golang v1.21.1/go.mod h1:U9NM32ykUErtVBxdvD3zfi+EuFkkaBvMb09mIfe0Zgg=
 github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
 github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
 github.com/prometheus/common v0.62.0 h1:xasJaQlnWAeyHdUBeGjXmutelfJHWMRr+Fg4QszZ2Io=
 github.com/prometheus/common v0.62.0/go.mod h1:vyBcEuLSvWos9B1+CyL7JZ2up+uFzXhkqml0W5zIY1I=
 github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
 github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
-github.com/redis/go-redis/v9 v9.7.1 h1:4LhKRCIduqXqtvCUlaq9c8bdHOkICjDMrr1+Zb3osAc=
+github.com/redis/go-redis/v9 v9.11.0 h1:E3S08Gl/nJNn5vkxd2i78wZxWAPNZgUNTp8WIJUAiIs=
-github.com/redis/go-redis/v9 v9.7.1/go.mod h1:f6zhXITC7JUJIlPEiBOTXxJgPLdZcA93GewI7inzyWw=
+github.com/redis/go-redis/v9 v9.11.0/go.mod h1:huWgSWd8mW6+m0VPhJjSSQ+d6Nh1VICQ6Q5lHuCH/Iw=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
@@ -203,8 +202,8 @@ go.etcd.io/etcd/client/pkg/v3 v3.5.15 h1:fo0HpWz/KlHGMCC+YejpiCmyWDEuIpnTDzpJLB5
 go.etcd.io/etcd/client/pkg/v3 v3.5.15/go.mod h1:mXDI4NAOwEiszrHCb0aqfAYNCrZP4e9hRca3d1YK8EU=
 go.etcd.io/etcd/client/v3 v3.5.15 h1:23M0eY4Fd/inNv1ZfU3AxrbbOdW79r9V9Rl62Nm6ip4=
 go.etcd.io/etcd/client/v3 v3.5.15/go.mod h1:CLSJxrYjvLtHsrPKsy7LmZEE+DK2ktfd2bN4RhBMwlU=
-go.mongodb.org/mongo-driver v1.17.3 h1:TQyXhnsWfWtgAhMtOgtYHMTkZIfBTpMTsMnd9ZBeHxQ=
+go.mongodb.org/mongo-driver v1.17.4 h1:jUorfmVzljjr0FLzYQsGP8cgN/qzzxlY9Vh0C9KFXVw=
-go.mongodb.org/mongo-driver v1.17.3/go.mod h1:Hy04i7O2kC4RS06ZrhPRqj/u4DTYkFDAAccj+rVKqgQ=
+go.mongodb.org/mongo-driver v1.17.4/go.mod h1:Hy04i7O2kC4RS06ZrhPRqj/u4DTYkFDAAccj+rVKqgQ=
 go.opentelemetry.io/otel v1.24.0 h1:0LAOdjNmQeSTzGBzduGe/rU4tZhMwL5rWgtp9Ku5Jfo=
 go.opentelemetry.io/otel v1.24.0/go.mod h1:W7b9Ozg4nkF5tWI5zsXkaKKDjdVjpD4oAt9Qi/MArHo=
 go.opentelemetry.io/otel/exporters/jaeger v1.17.0 h1:D7UpUy2Xc2wsi1Ras6V40q806WM07rqoCWzXu7Sqy+4=

internal/profiling/profiling.go

@@ -0,0 +1,263 @@
+package profiling
+
+import (
+	"runtime"
+	"sync"
+	"time"
+
+	"github.com/grafana/pyroscope-go"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/core/proc"
+	"github.com/zeromicro/go-zero/core/stat"
+	"github.com/zeromicro/go-zero/core/threading"
+)
+
+const (
+	defaultCheckInterval     = time.Second * 10
+	defaultProfilingDuration = time.Minute * 2
+	defaultUploadRate        = time.Second * 15
+)
+
+type (
+	Config struct {
+		// Name is the name of the application.
+		Name string `json:",optional,inherit"`
+		// ServerAddr is the address of the profiling server.
+		ServerAddr string
+		// AuthUser is the username for basic authentication.
+		AuthUser string `json:",optional"`
+		// AuthPassword is the password for basic authentication.
+		AuthPassword string `json:",optional"`
+		// UploadRate is the duration for which profiling data is uploaded.
+		UploadRate time.Duration `json:",default=15s"`
+		// CheckInterval is the interval to check if profiling should start.
+		CheckInterval time.Duration `json:",default=10s"`
+		// ProfilingDuration is the duration for which profiling data is collected.
+		ProfilingDuration time.Duration `json:",default=2m"`
+		// CpuThreshold the collection is allowed only when the current service cpu > CpuThreshold
+		CpuThreshold int64 `json:",default=700,range=[0:1000)"`
+
+		// ProfileType is the type of profiling to be performed.
+		ProfileType ProfileType
+	}
+
+	ProfileType struct {
+		// Logger is a flag to enable or disable logging.
+		Logger bool `json:",default=false"`
+		// CPU is a flag to disable CPU profiling.
+		CPU bool `json:",default=true"`
+		// Goroutines is a flag to disable goroutine profiling.
+		Goroutines bool `json:",default=true"`
+		// Memory is a flag to disable memory profiling.
+		Memory bool `json:",default=true"`
+		// Mutex is a flag to disable mutex profiling.
+		Mutex bool `json:",default=false"`
+		// Block is a flag to disable block profiling.
+		Block bool `json:",default=false"`
+	}
+
+	profiler interface {
+		Start() error
+		Stop() error
+	}
+
+	pyroscopeProfiler struct {
+		c        Config
+		profiler *pyroscope.Profiler
+	}
+)
+
+var (
+	once sync.Once
+
+	newProfiler = func(c Config) profiler {
+		return newPyroscopeProfiler(c)
+	}
+)
+
+// Start initializes the pyroscope profiler with the given configuration.
+func Start(c Config) {
+	// check if the profiling is enabled
+	if len(c.ServerAddr) == 0 {
+		return
+	}
+
+	// set default values for the configuration
+	if c.ProfilingDuration <= 0 {
+		c.ProfilingDuration = defaultProfilingDuration
+	}
+
+	// set default values for the configuration
+	if c.CheckInterval <= 0 {
+		c.CheckInterval = defaultCheckInterval
+	}
+
+	if c.UploadRate <= 0 {
+		c.UploadRate = defaultUploadRate
+	}
+
+	once.Do(func() {
+		logx.Info("continuous profiling started")
+
+		threading.GoSafe(func() {
+			startPyroscope(c, proc.Done())
+		})
+	})
+}
+
+// startPyroscope starts the pyroscope profiler with the given configuration.
+func startPyroscope(c Config, done <-chan struct{}) {
+	var (
+		pr                  profiler
+		err                 error
+		latestProfilingTime time.Time
+		intervalTicker      = time.NewTicker(c.CheckInterval)
+		profilingTicker     = time.NewTicker(c.ProfilingDuration)
+	)
+
+	defer profilingTicker.Stop()
+	defer intervalTicker.Stop()
+
+	for {
+		select {
+		case <-intervalTicker.C:
+			// Check if the machine is overloaded and if the profiler is not running
+			if pr == nil && isCpuOverloaded(c) {
+				pr = newProfiler(c)
+				if err := pr.Start(); err != nil {
+					logx.Errorf("failed to start profiler: %v", err)
+					continue
+				}
+
+				// record the latest profiling time
+				latestProfilingTime = time.Now()
+				logx.Infof("pyroscope profiler started.")
+			}
+		case <-profilingTicker.C:
+			// check if the profiling duration has passed
+			if !time.Now().After(latestProfilingTime.Add(c.ProfilingDuration)) {
+				continue
+			}
+
+			// check if the profiler is already running, if so, skip
+			if pr != nil {
+				if err = pr.Stop(); err != nil {
+					logx.Errorf("failed to stop profiler: %v", err)
+				}
+				logx.Infof("pyroscope profiler stopped.")
+				pr = nil
+			}
+		case <-done:
+			logx.Infof("continuous profiling stopped.")
+			return
+		}
+	}
+}
+
+// genPyroscopeConf generates the pyroscope configuration based on the given config.
+func genPyroscopeConf(c Config) pyroscope.Config {
+	pConf := pyroscope.Config{
+		UploadRate:        c.UploadRate,
+		ApplicationName:   c.Name,
+		BasicAuthUser:     c.AuthUser,     // http basic auth user
+		BasicAuthPassword: c.AuthPassword, // http basic auth password
+		ServerAddress:     c.ServerAddr,
+		Logger:            nil,
+		HTTPHeaders:       map[string]string{},
+		// you can provide static tags via a map:
+		Tags: map[string]string{
+			"name": c.Name,
+		},
+	}
+
+	if c.ProfileType.Logger {
+		pConf.Logger = logx.WithCallerSkip(0)
+	}
+
+	if c.ProfileType.CPU {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileCPU)
+	}
+	if c.ProfileType.Goroutines {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileGoroutines)
+	}
+	if c.ProfileType.Memory {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileAllocObjects, pyroscope.ProfileAllocSpace,
+			pyroscope.ProfileInuseObjects, pyroscope.ProfileInuseSpace)
+	}
+	if c.ProfileType.Mutex {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileMutexCount, pyroscope.ProfileMutexDuration)
+	}
+	if c.ProfileType.Block {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileBlockCount, pyroscope.ProfileBlockDuration)
+	}
+
+	logx.Infof("applicationName: %s", pConf.ApplicationName)
+
+	return pConf
+}
+
+// isCpuOverloaded checks the machine performance based on the given configuration.
+func isCpuOverloaded(c Config) bool {
+	currentValue := stat.CpuUsage()
+	if currentValue >= c.CpuThreshold {
+		logx.Infof("continuous profiling cpu overload, cpu: %d", currentValue)
+		return true
+	}
+
+	return false
+}
+
+func newPyroscopeProfiler(c Config) profiler {
+	return &pyroscopeProfiler{
+		c: c,
+	}
+}
+
+func (p *pyroscopeProfiler) Start() error {
+	pConf := genPyroscopeConf(p.c)
+	// set mutex and block profile rate
+	setFraction(p.c)
+	prof, err := pyroscope.Start(pConf)
+	if err != nil {
+		resetFraction(p.c)
+		return err
+	}
+
+	p.profiler = prof
+	return nil
+}
+
+func (p *pyroscopeProfiler) Stop() error {
+	if p.profiler == nil {
+		return nil
+	}
+
+	if err := p.profiler.Stop(); err != nil {
+		return err
+	}
+
+	resetFraction(p.c)
+	p.profiler = nil
+
+	return nil
+}
+
+func setFraction(c Config) {
+	// These 2 lines are only required if you're using mutex or block profiling
+	if c.ProfileType.Mutex {
+		runtime.SetMutexProfileFraction(10) // 10/seconds
+	}
+	if c.ProfileType.Block {
+		runtime.SetBlockProfileRate(1000 * 1000) //  1/millisecond
+	}
+}
+
+func resetFraction(c Config) {
+	// These 2 lines are only required if you're using mutex or block profiling
+	if c.ProfileType.Mutex {
+		runtime.SetMutexProfileFraction(0)
+	}
+	if c.ProfileType.Block {
+		runtime.SetBlockProfileRate(0)
+	}
+}

internal/profiling/profiling_test.go

@@ -0,0 +1,177 @@
+package profiling
+
+import (
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/grafana/pyroscope-go"
+	"github.com/stretchr/testify/assert"
+	"github.com/zeromicro/go-zero/core/conf"
+	"github.com/zeromicro/go-zero/core/syncx"
+)
+
+func TestStart(t *testing.T) {
+	t.Run("profiling", func(t *testing.T) {
+		var c Config
+		assert.NoError(t, conf.FillDefault(&c))
+		c.Name = "test"
+		p := newProfiler(c)
+		assert.NotNil(t, p)
+		assert.NoError(t, p.Start())
+		assert.NoError(t, p.Stop())
+	})
+
+	t.Run("invalid config", func(t *testing.T) {
+		mp := &mockProfiler{}
+		newProfiler = func(c Config) profiler {
+			return mp
+		}
+
+		Start(Config{})
+
+		Start(Config{
+			ServerAddr: "localhost:4040",
+		})
+	})
+
+	t.Run("test start profiler", func(t *testing.T) {
+		mp := &mockProfiler{}
+		newProfiler = func(c Config) profiler {
+			return mp
+		}
+
+		c := Config{
+			Name:              "test",
+			ServerAddr:        "localhost:4040",
+			CheckInterval:     time.Millisecond,
+			ProfilingDuration: time.Millisecond * 10,
+			CpuThreshold:      0,
+		}
+		var done = make(chan struct{})
+		go startPyroscope(c, done)
+
+		time.Sleep(time.Millisecond * 50)
+		close(done)
+
+		assert.True(t, mp.started.True())
+		assert.True(t, mp.stopped.True())
+	})
+
+	t.Run("test start profiler with cpu overloaded", func(t *testing.T) {
+		mp := &mockProfiler{}
+		newProfiler = func(c Config) profiler {
+			return mp
+		}
+
+		c := Config{
+			Name:              "test",
+			ServerAddr:        "localhost:4040",
+			CheckInterval:     time.Millisecond,
+			ProfilingDuration: time.Millisecond * 10,
+			CpuThreshold:      900,
+		}
+		var done = make(chan struct{})
+		go startPyroscope(c, done)
+
+		time.Sleep(time.Millisecond * 50)
+		close(done)
+
+		assert.False(t, mp.started.True())
+	})
+
+	t.Run("start/stop err", func(t *testing.T) {
+		mp := &mockProfiler{
+			err: assert.AnError,
+		}
+		newProfiler = func(c Config) profiler {
+			return mp
+		}
+
+		c := Config{
+			Name:              "test",
+			ServerAddr:        "localhost:4040",
+			CheckInterval:     time.Millisecond,
+			ProfilingDuration: time.Millisecond * 10,
+			CpuThreshold:      0,
+		}
+		var done = make(chan struct{})
+		go startPyroscope(c, done)
+
+		time.Sleep(time.Millisecond * 50)
+		close(done)
+
+		assert.False(t, mp.started.True())
+		assert.False(t, mp.stopped.True())
+	})
+}
+
+func TestGenPyroscopeConf(t *testing.T) {
+	c := Config{
+		Name:         "",
+		ServerAddr:   "localhost:4040",
+		AuthUser:     "user",
+		AuthPassword: "password",
+		ProfileType: ProfileType{
+			Logger:     true,
+			CPU:        true,
+			Goroutines: true,
+			Memory:     true,
+			Mutex:      true,
+			Block:      true,
+		},
+	}
+
+	pyroscopeConf := genPyroscopeConf(c)
+	assert.Equal(t, c.ServerAddr, pyroscopeConf.ServerAddress)
+	assert.Equal(t, c.AuthUser, pyroscopeConf.BasicAuthUser)
+	assert.Equal(t, c.AuthPassword, pyroscopeConf.BasicAuthPassword)
+	assert.Equal(t, c.Name, pyroscopeConf.ApplicationName)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileCPU)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileGoroutines)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileAllocObjects)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileAllocSpace)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileInuseObjects)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileInuseSpace)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileMutexCount)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileMutexDuration)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileBlockCount)
+	assert.Contains(t, pyroscopeConf.ProfileTypes, pyroscope.ProfileBlockDuration)
+
+	setFraction(c)
+	resetFraction(c)
+
+	newPyroscopeProfiler(c)
+}
+
+func TestNewPyroscopeProfiler(t *testing.T) {
+	p := newPyroscopeProfiler(Config{})
+
+	assert.Error(t, p.Start())
+	assert.NoError(t, p.Stop())
+}
+
+type mockProfiler struct {
+	mutex   sync.Mutex
+	started syncx.AtomicBool
+	stopped syncx.AtomicBool
+	err     error
+}
+
+func (m *mockProfiler) Start() error {
+	m.mutex.Lock()
+	if m.err == nil {
+		m.started.Set(true)
+	}
+	m.mutex.Unlock()
+	return m.err
+}
+
+func (m *mockProfiler) Stop() error {
+	m.mutex.Lock()
+	if m.err == nil {
+		m.stopped.Set(true)
+	}
+	m.mutex.Unlock()
+	return m.err
+}

mcp/config.go

@@ -0,0 +1,43 @@
+package mcp
+
+import (
+	"time"
+
+	"github.com/zeromicro/go-zero/rest"
+)
+
+// McpConf defines the configuration for an MCP server.
+// It embeds rest.RestConf for HTTP server settings
+// and adds MCP-specific configuration options.
+type McpConf struct {
+	rest.RestConf
+	Mcp struct {
+		// Name is the server name reported in initialize responses
+		Name string `json:",optional"`
+
+		// Version is the server version reported in initialize responses
+		Version string `json:",default=1.0.0"`
+
+		// ProtocolVersion is the MCP protocol version implemented
+		ProtocolVersion string `json:",default=2024-11-05"`
+
+		// BaseUrl is the base URL for the server, used in SSE endpoint messages
+		// If not set, defaults to http://localhost:{Port}
+		BaseUrl string `json:",optional"`
+
+		// SseEndpoint is the path for Server-Sent Events connections
+		SseEndpoint string `json:",default=/sse"`
+
+		// MessageEndpoint is the path for JSON-RPC requests
+		MessageEndpoint string `json:",default=/message"`
+
+		// Cors contains allowed CORS origins
+		Cors []string `json:",optional"`
+
+		// SseTimeout is the maximum time allowed for SSE connections
+		SseTimeout time.Duration `json:",default=24h"`
+
+		// MessageTimeout is the maximum time allowed for request execution
+		MessageTimeout time.Duration `json:",default=30s"`
+	}
+}

mcp/config_test.go

@@ -0,0 +1,63 @@
+package mcp
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/zeromicro/go-zero/core/conf"
+)
+
+func TestMcpConfDefaults(t *testing.T) {
+	// Test default values are set correctly when unmarshalled from JSON
+	jsonConfig := `name: test-service
+port: 8080
+mcp:
+  name: test-mcp-server
+  version: 1.0.0
+`
+
+	var c McpConf
+	err := conf.LoadFromYamlBytes([]byte(jsonConfig), &c)
+	assert.NoError(t, err)
+
+	// Check default values
+	assert.Equal(t, "test-mcp-server", c.Mcp.Name)
+	assert.Equal(t, "1.0.0", c.Mcp.Version, "Default version should be 1.0.0")
+	assert.Equal(t, "2024-11-05", c.Mcp.ProtocolVersion, "Default protocol version should be 2024-11-05")
+	assert.Equal(t, "/sse", c.Mcp.SseEndpoint, "Default SSE endpoint should be /sse")
+	assert.Equal(t, "/message", c.Mcp.MessageEndpoint, "Default message endpoint should be /message")
+	assert.Equal(t, 30*time.Second, c.Mcp.MessageTimeout, "Default message timeout should be 30s")
+}
+
+func TestMcpConfCustomValues(t *testing.T) {
+	// Test custom values can be set
+	jsonConfig := `{
+		"Name": "test-service",
+		"Port": 8080,
+		"Mcp": {
+			"Name": "test-mcp-server",
+			"Version": "2.0.0",
+			"ProtocolVersion": "2025-01-01",
+			"BaseUrl": "http://example.com",
+			"SseEndpoint": "/custom-sse",
+			"MessageEndpoint": "/custom-message",
+			"Cors": ["http://localhost:3000", "http://example.com"],
+			"MessageTimeout": "60s"
+		}
+	}`
+
+	var c McpConf
+	err := conf.LoadFromJsonBytes([]byte(jsonConfig), &c)
+	assert.NoError(t, err)
+
+	// Check custom values
+	assert.Equal(t, "test-mcp-server", c.Mcp.Name, "Name should be inherited from RestConf")
+	assert.Equal(t, "2.0.0", c.Mcp.Version, "Version should be customizable")
+	assert.Equal(t, "2025-01-01", c.Mcp.ProtocolVersion, "Protocol version should be customizable")
+	assert.Equal(t, "http://example.com", c.Mcp.BaseUrl, "BaseUrl should be customizable")
+	assert.Equal(t, "/custom-sse", c.Mcp.SseEndpoint, "SSE endpoint should be customizable")
+	assert.Equal(t, "/custom-message", c.Mcp.MessageEndpoint, "Message endpoint should be customizable")
+	assert.Equal(t, []string{"http://localhost:3000", "http://example.com"}, c.Mcp.Cors, "CORS settings should be customizable")
+	assert.Equal(t, 60*time.Second, c.Mcp.MessageTimeout, "Tool timeout should be customizable")
+}

mcp/integration_test.go

@@ -0,0 +1,443 @@
+package mcp
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// syncResponseRecorder is a thread-safe wrapper around httptest.ResponseRecorder
+type syncResponseRecorder struct {
+	*httptest.ResponseRecorder
+	mu sync.Mutex
+}
+
+// Create a new synchronized response recorder
+func newSyncResponseRecorder() *syncResponseRecorder {
+	return &syncResponseRecorder{
+		ResponseRecorder: httptest.NewRecorder(),
+	}
+}
+
+// Override Write method to synchronize access
+func (srr *syncResponseRecorder) Write(p []byte) (int, error) {
+	srr.mu.Lock()
+	defer srr.mu.Unlock()
+	return srr.ResponseRecorder.Write(p)
+}
+
+// Override WriteHeader method to synchronize access
+func (srr *syncResponseRecorder) WriteHeader(statusCode int) {
+	srr.mu.Lock()
+	defer srr.mu.Unlock()
+	srr.ResponseRecorder.WriteHeader(statusCode)
+}
+
+// Override Result method to synchronize access
+func (srr *syncResponseRecorder) Result() *http.Response {
+	srr.mu.Lock()
+	defer srr.mu.Unlock()
+	return srr.ResponseRecorder.Result()
+}
+
+// TestHTTPHandlerIntegration tests the HTTP handlers with a real server instance
+func TestHTTPHandlerIntegration(t *testing.T) {
+	// Skip in short test mode
+	if testing.Short() {
+		t.Skip("Skipping integration test in short mode")
+	}
+
+	// Create a test configuration
+	conf := McpConf{}
+	conf.Mcp.Name = "test-integration"
+	conf.Mcp.Version = "1.0.0-test"
+	conf.Mcp.MessageTimeout = 1 * time.Second
+
+	// Create a mock server directly
+	server := &sseMcpServer{
+		conf:      conf,
+		clients:   make(map[string]*mcpClient),
+		tools:     make(map[string]Tool),
+		prompts:   make(map[string]Prompt),
+		resources: make(map[string]Resource),
+	}
+
+	// Register a test tool
+	err := server.RegisterTool(Tool{
+		Name:        "echo",
+		Description: "Echo tool for testing",
+		InputSchema: InputSchema{
+			Properties: map[string]any{
+				"message": map[string]any{
+					"type":        "string",
+					"description": "Message to echo",
+				},
+			},
+		},
+		Handler: func(ctx context.Context, params map[string]any) (any, error) {
+			if msg, ok := params["message"].(string); ok {
+				return fmt.Sprintf("Echo: %s", msg), nil
+			}
+			return "Echo: no message provided", nil
+		},
+	})
+	require.NoError(t, err)
+
+	// Create a test HTTP request to the SSE endpoint
+	req := httptest.NewRequest("GET", "/sse", nil)
+	w := newSyncResponseRecorder()
+
+	// Create a done channel to signal completion of test
+	done := make(chan bool)
+
+	// Start the SSE handler in a goroutine
+	go func() {
+		// lock.Lock()
+		server.handleSSE(w, req)
+		// lock.Unlock()
+		done <- true
+	}()
+
+	// Allow time for the handler to process
+	select {
+	case <-time.After(100 * time.Millisecond):
+		// Expected - handler would normally block indefinitely
+	case <-done:
+		// This shouldn't happen immediately - the handler should block
+		t.Error("SSE handler returned unexpectedly")
+	}
+
+	// Check the initial headers
+	resp := w.Result()
+	assert.Equal(t, "chunked", resp.Header.Get("Transfer-Encoding"))
+	resp.Body.Close()
+
+	// The handler creates a client and sends the endpoint message
+	var sessionId string
+
+	// Give the handler time to set up the client
+	time.Sleep(50 * time.Millisecond)
+
+	// Check that a client was created
+	server.clientsLock.Lock()
+	assert.Equal(t, 1, len(server.clients))
+	for id := range server.clients {
+		sessionId = id
+	}
+	server.clientsLock.Unlock()
+
+	require.NotEmpty(t, sessionId, "Expected a session ID to be created")
+
+	// Now that we have a session ID, we can test the message endpoint
+	messageBody, _ := json.Marshal(Request{
+		JsonRpc: "2.0",
+		ID:      1,
+		Method:  methodInitialize,
+		Params:  json.RawMessage(`{}`),
+	})
+
+	// Create a message request
+	reqURL := fmt.Sprintf("/message?%s=%s", sessionIdKey, sessionId)
+	msgReq := httptest.NewRequest("POST", reqURL, bytes.NewReader(messageBody))
+	msgW := newSyncResponseRecorder()
+
+	// Process the message
+	server.handleRequest(msgW, msgReq)
+
+	// Check the response
+	msgResp := msgW.Result()
+	assert.Equal(t, http.StatusAccepted, msgResp.StatusCode)
+	msgResp.Body.Close() // Ensure response body is closed
+}
+
+// TestHandlerResponseFlow tests the flow of a full request/response cycle
+func TestHandlerResponseFlow(t *testing.T) {
+	// Create a mock server for testing
+	server := &sseMcpServer{
+		conf: McpConf{},
+		clients: map[string]*mcpClient{
+			"test-session": {
+				id:          "test-session",
+				channel:     make(chan string, 10),
+				initialized: true,
+			},
+		},
+		tools:     make(map[string]Tool),
+		prompts:   make(map[string]Prompt),
+		resources: make(map[string]Resource),
+	}
+
+	// Register test resources
+	server.RegisterTool(Tool{
+		Name:        "test.tool",
+		Description: "Test tool",
+		InputSchema: InputSchema{Type: "object"},
+		Handler: func(ctx context.Context, params map[string]any) (any, error) {
+			return "tool result", nil
+		},
+	})
+
+	server.RegisterPrompt(Prompt{
+		Name:        "test.prompt",
+		Description: "Test prompt",
+	})
+
+	server.RegisterResource(Resource{
+		Name:        "test.resource",
+		URI:         "http://example.com",
+		Description: "Test resource",
+	})
+
+	// Create a request with session ID parameter
+	reqURL := fmt.Sprintf("/message?%s=%s", sessionIdKey, "test-session")
+
+	// Test tools/list request
+	toolsListBody, _ := json.Marshal(Request{
+		JsonRpc: "2.0",
+		ID:      1,
+		Method:  methodToolsList,
+		Params:  json.RawMessage(`{}`),
+	})
+
+	toolsReq := httptest.NewRequest("POST", reqURL, bytes.NewReader(toolsListBody))
+	toolsW := newSyncResponseRecorder()
+
+	// Process the request
+	server.handleRequest(toolsW, toolsReq)
+
+	// Check the response code
+	toolsResp := toolsW.Result()
+	assert.Equal(t, http.StatusAccepted, toolsResp.StatusCode)
+	toolsResp.Body.Close()
+
+	// Check the channel message
+	client := server.clients["test-session"]
+	select {
+	case message := <-client.channel:
+		assert.Contains(t, message, `"tools":[{"name":"test.tool"`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for tools/list response")
+	}
+
+	// Test prompts/list request
+	promptsListBody, _ := json.Marshal(Request{
+		JsonRpc: "2.0",
+		ID:      2,
+		Method:  methodPromptsList,
+		Params:  json.RawMessage(`{}`),
+	})
+
+	promptsReq := httptest.NewRequest("POST", reqURL, bytes.NewReader(promptsListBody))
+	promptsW := newSyncResponseRecorder()
+
+	// Process the request
+	server.handleRequest(promptsW, promptsReq)
+
+	// Check the response code
+	promptsResp := promptsW.Result()
+	assert.Equal(t, http.StatusAccepted, promptsResp.StatusCode)
+	promptsResp.Body.Close()
+
+	// Check the channel message
+	select {
+	case message := <-client.channel:
+		assert.Contains(t, message, `"prompts":[{"name":"test.prompt"`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for prompts/list response")
+	}
+
+	// Test resources/list request
+	resourcesListBody, _ := json.Marshal(Request{
+		JsonRpc: "2.0",
+		ID:      3,
+		Method:  methodResourcesList,
+		Params:  json.RawMessage(`{}`),
+	})
+
+	resourcesReq := httptest.NewRequest("POST", reqURL, bytes.NewReader(resourcesListBody))
+	resourcesW := newSyncResponseRecorder()
+
+	// Process the request
+	server.handleRequest(resourcesW, resourcesReq)
+
+	// Check the response code
+	resourcesResp := resourcesW.Result()
+	assert.Equal(t, http.StatusAccepted, resourcesResp.StatusCode)
+	resourcesResp.Body.Close()
+
+	// Check the channel message
+	select {
+	case message := <-client.channel:
+		assert.Contains(t, message, `"name":"test.resource"`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for resources/list response")
+	}
+}
+
+// TestProcessListMethods tests the list processing methods with pagination
+func TestProcessListMethods(t *testing.T) {
+	server := &sseMcpServer{
+		tools:     make(map[string]Tool),
+		prompts:   make(map[string]Prompt),
+		resources: make(map[string]Resource),
+	}
+
+	// Add some test data
+	for i := 1; i <= 5; i++ {
+		tool := Tool{
+			Name:        fmt.Sprintf("tool%d", i),
+			Description: fmt.Sprintf("Tool %d", i),
+			InputSchema: InputSchema{Type: "object"},
+		}
+		server.tools[tool.Name] = tool
+
+		prompt := Prompt{
+			Name:        fmt.Sprintf("prompt%d", i),
+			Description: fmt.Sprintf("Prompt %d", i),
+		}
+		server.prompts[prompt.Name] = prompt
+
+		resource := Resource{
+			Name:        fmt.Sprintf("resource%d", i),
+			URI:         fmt.Sprintf("http://example.com/%d", i),
+			Description: fmt.Sprintf("Resource %d", i),
+		}
+		server.resources[resource.Name] = resource
+	}
+
+	// Create a test client
+	client := &mcpClient{
+		id:          "test-client",
+		channel:     make(chan string, 10),
+		initialized: true,
+	}
+
+	// Test processListTools
+	req := Request{
+		JsonRpc: "2.0",
+		ID:      1,
+		Method:  methodToolsList,
+		Params:  json.RawMessage(`{"cursor": "", "_meta": {"progressToken": "token1"}}`),
+	}
+
+	server.processListTools(context.Background(), client, req)
+
+	// Read response
+	select {
+	case response := <-client.channel:
+		assert.Contains(t, response, `"tools":`)
+		assert.Contains(t, response, `"progressToken":"token1"`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for tools/list response")
+	}
+
+	// Test processListPrompts
+	req.ID = 2
+	req.Method = methodPromptsList
+	req.Params = json.RawMessage(`{"cursor": "next"}`)
+	server.processListPrompts(context.Background(), client, req)
+
+	// Read response
+	select {
+	case response := <-client.channel:
+		assert.Contains(t, response, `"prompts":`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for prompts/list response")
+	}
+
+	// Test processListResources
+	req.ID = 3
+	req.Method = methodResourcesList
+	req.Params = json.RawMessage(`{"cursor": "next"}`)
+	server.processListResources(context.Background(), client, req)
+
+	// Read response
+	select {
+	case response := <-client.channel:
+		assert.Contains(t, response, `"resources":`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for resources/list response")
+	}
+}
+
+// TestErrorResponseHandling tests error handling in the server
+func TestErrorResponseHandling(t *testing.T) {
+	server := &sseMcpServer{
+		tools:     make(map[string]Tool),
+		prompts:   make(map[string]Prompt),
+		resources: make(map[string]Resource),
+	}
+
+	// Create a test client
+	client := &mcpClient{
+		id:          "test-client",
+		channel:     make(chan string, 10),
+		initialized: true,
+	}
+
+	// Test invalid method
+	req := Request{
+		JsonRpc: "2.0",
+		ID:      1,
+		Method:  "invalid_method",
+		Params:  json.RawMessage(`{}`),
+	}
+
+	// Mock handleRequest by directly calling error handler
+	server.sendErrorResponse(context.Background(), client, req.ID, "Method not found", errCodeMethodNotFound)
+
+	// Check response
+	select {
+	case response := <-client.channel:
+		assert.Contains(t, response, `"error":{"code":-32601,"message":"Method not found"}`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for error response")
+	}
+
+	// Test invalid tool
+	toolReq := Request{
+		JsonRpc: "2.0",
+		ID:      2,
+		Method:  methodToolsCall,
+		Params:  json.RawMessage(`{"name":"non_existent_tool"}`),
+	}
+
+	// Call process method directly
+	server.processToolCall(context.Background(), client, toolReq)
+
+	// Check response
+	select {
+	case response := <-client.channel:
+		assert.Contains(t, response, `"error":{"code":-32602,"message":"Tool 'non_existent_tool' not found"}`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for error response")
+	}
+
+	// Test invalid prompt
+	promptReq := Request{
+		JsonRpc: "2.0",
+		ID:      3,
+		Method:  methodPromptsGet,
+		Params:  json.RawMessage(`{"name":"non_existent_prompt"}`),
+	}
+
+	// Call process method directly
+	server.processGetPrompt(context.Background(), client, promptReq)
+
+	// Check response
+	select {
+	case response := <-client.channel:
+		assert.Contains(t, response, `"error":{"code":-32602,"message":"Prompt 'non_existent_prompt' not found"}`)
+	case <-time.After(100 * time.Millisecond):
+		t.Fatal("Timed out waiting for error response")
+	}
+}

mcp/parser.go

@@ -0,0 +1,23 @@
+package mcp
+
+import (
+	"fmt"
+
+	"github.com/zeromicro/go-zero/core/mapping"
+)
+
+// ParseArguments parses the arguments and populates the request object
+func ParseArguments(args any, req any) error {
+	switch arguments := args.(type) {
+	case map[string]string:
+		m := make(map[string]any, len(arguments))
+		for k, v := range arguments {
+			m[k] = v
+		}
+		return mapping.UnmarshalJsonMap(m, req, mapping.WithStringValues())
+	case map[string]any:
+		return mapping.UnmarshalJsonMap(arguments, req)
+	default:
+		return fmt.Errorf("unsupported argument type: %T", arguments)
+	}
+}

mcp/parser_test.go

@@ -0,0 +1,139 @@
+package mcp
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestParseArguments_MapStringString tests parsing map[string]string arguments
+func TestParseArguments_MapStringString(t *testing.T) {
+	// Sample request struct to populate
+	type requestStruct struct {
+		Name    string `json:"name"`
+		Message string `json:"message"`
+		Count   int    `json:"count"`
+		Enabled bool   `json:"enabled"`
+	}
+
+	// Create test arguments
+	args := map[string]string{
+		"name":    "test-name",
+		"message": "hello world",
+		"count":   "42",
+		"enabled": "true",
+	}
+
+	// Create a target object to populate
+	var req requestStruct
+
+	// Parse the arguments
+	err := ParseArguments(args, &req)
+
+	// Verify results
+	assert.NoError(t, err, "Should parse map[string]string without error")
+	assert.Equal(t, "test-name", req.Name, "Name should be correctly parsed")
+	assert.Equal(t, "hello world", req.Message, "Message should be correctly parsed")
+	assert.Equal(t, 42, req.Count, "Count should be correctly parsed to int")
+	assert.True(t, req.Enabled, "Enabled should be correctly parsed to bool")
+}
+
+// TestParseArguments_MapStringAny tests parsing map[string]any arguments
+func TestParseArguments_MapStringAny(t *testing.T) {
+	// Sample request struct to populate
+	type requestStruct struct {
+		Name     string            `json:"name"`
+		Message  string            `json:"message"`
+		Count    int               `json:"count"`
+		Enabled  bool              `json:"enabled"`
+		Tags     []string          `json:"tags"`
+		Metadata map[string]string `json:"metadata"`
+	}
+
+	// Create test arguments with mixed types
+	args := map[string]any{
+		"name":    "test-name",
+		"message": "hello world",
+		"count":   42,   // note: this is already an int
+		"enabled": true, // note: this is already a bool
+		"tags":    []string{"tag1", "tag2"},
+		"metadata": map[string]string{
+			"key1": "value1",
+			"key2": "value2",
+		},
+	}
+
+	// Create a target object to populate
+	var req requestStruct
+
+	// Parse the arguments
+	err := ParseArguments(args, &req)
+
+	// Verify results
+	assert.NoError(t, err, "Should parse map[string]any without error")
+	assert.Equal(t, "test-name", req.Name, "Name should be correctly parsed")
+	assert.Equal(t, "hello world", req.Message, "Message should be correctly parsed")
+	assert.Equal(t, 42, req.Count, "Count should be correctly parsed")
+	assert.True(t, req.Enabled, "Enabled should be correctly parsed")
+	assert.Equal(t, []string{"tag1", "tag2"}, req.Tags, "Tags should be correctly parsed")
+	assert.Equal(t, map[string]string{
+		"key1": "value1",
+		"key2": "value2",
+	}, req.Metadata, "Metadata should be correctly parsed")
+}
+
+// TestParseArguments_UnsupportedType tests parsing with an unsupported type
+func TestParseArguments_UnsupportedType(t *testing.T) {
+	// Sample request struct to populate
+	type requestStruct struct {
+		Name    string `json:"name"`
+		Message string `json:"message"`
+	}
+
+	// Use an unsupported argument type (slice)
+	args := []string{"not", "a", "map"}
+
+	// Create a target object to populate
+	var req requestStruct
+
+	// Parse the arguments
+	err := ParseArguments(args, &req)
+
+	// Verify error is returned with correct message
+	assert.Error(t, err, "Should return error for unsupported type")
+	assert.Contains(t, err.Error(), "unsupported argument type", "Error should mention unsupported type")
+	assert.Contains(t, err.Error(), "[]string", "Error should include the actual type")
+}
+
+// TestParseArguments_EmptyMap tests parsing with empty maps
+func TestParseArguments_EmptyMap(t *testing.T) {
+	// Sample request struct to populate
+	type requestStruct struct {
+		Name    string `json:"name,optional"`
+		Message string `json:"message,optional"`
+	}
+
+	// Test empty map[string]string
+	t.Run("EmptyMapStringString", func(t *testing.T) {
+		args := map[string]string{}
+		var req requestStruct
+
+		err := ParseArguments(args, &req)
+
+		assert.NoError(t, err, "Should parse empty map[string]string without error")
+		assert.Empty(t, req.Name, "Name should be empty string")
+		assert.Empty(t, req.Message, "Message should be empty string")
+	})
+
+	// Test empty map[string]any
+	t.Run("EmptyMapStringAny", func(t *testing.T) {
+		args := map[string]any{}
+		var req requestStruct
+
+		err := ParseArguments(args, &req)
+
+		assert.NoError(t, err, "Should parse empty map[string]any without error")
+		assert.Empty(t, req.Name, "Name should be empty string")
+		assert.Empty(t, req.Message, "Message should be empty string")
+	})
+}

mcp/readme.md

@@ -0,0 +1,870 @@
+# Model Context Protocol (MCP) Implementation
+
+## Overview
+This package implements the Model Context Protocol (MCP) server specification in Go, providing a framework for real-time communication between AI models and clients using Server-Sent Events (SSE). The implementation follows the standardized protocol for building AI-assisted applications with bidirectional communication capabilities.
+
+## Core Components
+
+### Server-Sent Events (SSE) Communication
+- **Real-time Communication**: Robust SSE-based communication system that maintains persistent connections with clients
+- **Connection Management**: Client registration, message broadcasting, and client cleanup mechanisms
+- **Event Handling**: Event types for tools, prompts, and resources changes
+
+### JSON-RPC Implementation
+- **Request Processing**: Complete JSON-RPC request processor for handling MCP protocol methods
+- **Response Formatting**: Proper response formatting according to JSON-RPC specifications
+- **Error Handling**: Comprehensive error handling with appropriate error codes
+
+### Tool Management
+- **Tool Registration**: System to register custom tools with handlers
+- **Tool Execution**: Mechanism to execute tool functions with proper timeout handling
+- **Result Handling**: Flexible result handling supporting various return types (string, JSON, images)
+
+### Prompt System
+- **Prompt Registration**: System for registering both static and dynamic prompts
+- **Argument Validation**: Validation for required arguments and default values for optional ones
+- **Message Generation**: Handlers that generate properly formatted conversation messages
+
+### Resource Management
+- **Resource Registration**: System for managing and accessing external resources
+- **Content Delivery**: Handlers for delivering resource content to clients on demand
+- **Resource Subscription**: Mechanisms for clients to subscribe to resource updates
+
+### Protocol Features
+- **Initialization Sequence**: Proper handshaking with capability negotiation
+- **Notification Handling**: Support for both standard and client-specific notifications
+- **Message Routing**: Intelligent routing of requests to appropriate handlers
+
+## Technical Highlights
+
+### Configuration System
+- **Flexible Configuration**: Configuration system with sensible defaults and customization options
+- **CORS Support**: Configurable CORS settings for cross-origin requests
+- **Server Information**: Proper server identification and versioning
+
+### Client Session Management
+- **Session Tracking**: Client session tracking with unique identifiers
+- **Connection Health**: Ping/pong mechanism to maintain connection health
+- **Initialization State**: Client initialization state tracking
+
+### Content Handling
+- **Multi-format Content**: Support for text, code, and binary content
+- **MIME Type Support**: Proper MIME type identification for various content types
+- **Audience Annotations**: Content audience annotations for user/assistant targeting
+
+## Usage
+
+### Setting Up an MCP Server
+
+To create and start an MCP server:
+
+```go
+package main
+
+import (
+	"github.com/zeromicro/go-zero/core/conf"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/mcp"
+)
+
+func main() {
+	// Load configuration from YAML file
+	var c mcp.McpConf
+	conf.MustLoad("config.yaml", &c)
+
+	// Optional: Disable stats logging
+	logx.DisableStat()
+
+	// Create MCP server
+	server := mcp.NewMcpServer(c)
+
+	// Register tools, prompts, and resources (examples below)
+
+	// Start the server and ensure it's stopped on exit
+	defer server.Stop()
+	server.Start()
+}
+```
+
+Sample configuration file (config.yaml):
+
+```yaml
+name: mcp-server
+host: localhost
+port: 8080
+mcp:
+  name: my-mcp-server
+  messageTimeout: 30s # Timeout for tool calls
+  cors:
+    - http://localhost:3000 # Optional CORS configuration
+```
+
+### Registering Tools
+
+Tools allow AI models to execute custom code through the MCP protocol.
+
+#### Basic Tool Example:
+
+```go
+// Register a simple echo tool
+echoTool := mcp.Tool{
+	Name:        "echo",
+	Description: "Echoes back the message provided by the user",
+	InputSchema: mcp.InputSchema{
+		Properties: map[string]any{
+			"message": map[string]any{
+				"type":        "string",
+				"description": "The message to echo back",
+			},
+			"prefix": map[string]any{
+				"type":        "string",
+				"description": "Optional prefix to add to the echoed message",
+				"default":     "Echo: ",
+			},
+		},
+		Required: []string{"message"},
+	},
+	Handler: func(ctx context.Context, params map[string]any) (any, error) {
+		var req struct {
+			Message string `json:"message"`
+			Prefix  string `json:"prefix,optional"`
+		}
+
+		if err := mcp.ParseArguments(params, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse params: %w", err)
+		}
+
+		prefix := "Echo: "
+		if len(req.Prefix) > 0 {
+			prefix = req.Prefix
+		}
+
+		return prefix + req.Message, nil
+	},
+}
+
+server.RegisterTool(echoTool)
+```
+
+#### Tool with Different Response Types:
+
+```go
+// Tool returning JSON data
+dataTool := mcp.Tool{
+	Name:        "data.generate",
+	Description: "Generates sample data in various formats",
+	InputSchema: mcp.InputSchema{
+		Properties: map[string]any{
+			"format": map[string]any{
+				"type":        "string",
+				"description": "Format of data (json, text)",
+				"enum":        []string{"json", "text"},
+			},
+		},
+	},
+	Handler: func(ctx context.Context, params map[string]any) (any, error) {
+		var req struct {
+			Format string `json:"format"`
+		}
+
+		if err := mcp.ParseArguments(params, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse params: %w", err)
+		}
+
+		if req.Format == "json" {
+			// Return structured data
+			return map[string]any{
+				"items": []map[string]any{
+					{"id": 1, "name": "Item 1"},
+					{"id": 2, "name": "Item 2"},
+				},
+				"count": 2,
+			}, nil
+		}
+
+		// Default to text
+		return "Sample text data", nil
+	},
+}
+
+server.RegisterTool(dataTool)
+```
+
+#### Image Generation Tool Example:
+
+```go
+// Tool returning image content
+imageTool := mcp.Tool{
+	Name:        "image.generate",
+	Description: "Generates a simple image",
+	InputSchema: mcp.InputSchema{
+		Properties: map[string]any{
+			"type": map[string]any{
+				"type":        "string",
+				"description": "Type of image to generate",
+				"default":     "placeholder",
+			},
+		},
+	},
+	Handler: func(ctx context.Context, params map[string]any) (any, error) {
+		// Return image content directly
+		return mcp.ImageContent{
+			Data:     "base64EncodedImageData...", // Base64 encoded image data
+			MimeType: "image/png",
+		}, nil
+	},
+}
+
+server.RegisterTool(imageTool)
+```
+
+#### Using ToolResult for Custom Outputs:
+
+```go
+// Tool that returns a custom ToolResult type
+customResultTool := mcp.Tool{
+	Name:        "custom.result",
+	Description: "Returns a custom formatted result",
+	InputSchema: mcp.InputSchema{
+		Properties: map[string]any{
+			"resultType": map[string]any{
+				"type": "string",
+				"enum": []string{"text", "image"},
+			},
+		},
+	},
+	Handler: func(ctx context.Context, params map[string]any) (any, error) {
+		var req struct {
+			ResultType string `json:"resultType"`
+		}
+
+		if err := mcp.ParseArguments(params, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse params: %w", err)
+		}
+
+		if req.ResultType == "image" {
+			return mcp.ToolResult{
+				Type: mcp.ContentTypeImage,
+				Content: map[string]any{
+					"data":     "base64EncodedImageData...",
+					"mimeType": "image/jpeg",
+				},
+			}, nil
+		}
+
+		// Default to text
+		return mcp.ToolResult{
+			Type:    mcp.ContentTypeText,
+			Content: "This is a text result from ToolResult",
+		}, nil
+	},
+}
+
+server.RegisterTool(customResultTool)
+```
+
+### Registering Prompts
+
+Prompts are reusable conversation templates for AI models.
+
+#### Static Prompt Example:
+
+```go
+// Register a simple static prompt with placeholders
+server.RegisterPrompt(mcp.Prompt{
+	Name:        "hello",
+	Description: "A simple hello prompt",
+	Arguments: []mcp.PromptArgument{
+		{
+			Name:        "name",
+			Description: "The name to greet",
+			Required:    false,
+		},
+	},
+	Content: "Say hello to {{name}} and introduce yourself as an AI assistant.",
+})
+```
+
+#### Dynamic Prompt with Handler Function:
+
+```go
+// Register a prompt with a dynamic handler function
+server.RegisterPrompt(mcp.Prompt{
+	Name:        "dynamic-prompt",
+	Description: "A prompt that uses a handler to generate dynamic content",
+	Arguments: []mcp.PromptArgument{
+		{
+			Name:        "username",
+			Description: "User's name for personalized greeting",
+			Required:    true,
+		},
+		{
+			Name:        "topic",
+			Description: "Topic of expertise",
+			Required:    true,
+		},
+	},
+	Handler: func(ctx context.Context, args map[string]string) ([]mcp.PromptMessage, error) {
+		var req struct {
+			Username string `json:"username"`
+			Topic    string `json:"topic"`
+		}
+
+		if err := mcp.ParseArguments(args, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse args: %w", err)
+		}
+
+		// Create a user message
+		userMessage := mcp.PromptMessage{
+			Role: mcp.RoleUser,
+			Content: mcp.TextContent{
+				Text: fmt.Sprintf("Hello, I'm %s and I'd like to learn about %s.", req.Username, req.Topic),
+			},
+		}
+
+		// Create an assistant response with current time
+		currentTime := time.Now().Format(time.RFC1123)
+		assistantMessage := mcp.PromptMessage{
+			Role: mcp.RoleAssistant,
+			Content: mcp.TextContent{
+				Text: fmt.Sprintf("Hello %s! I'm an AI assistant and I'll help you learn about %s. The current time is %s.",
+					req.Username, req.Topic, currentTime),
+			},
+		}
+
+		// Return both messages as a conversation
+		return []mcp.PromptMessage{userMessage, assistantMessage}, nil
+	},
+})
+```
+
+#### Multi-Message Prompt with Code Examples:
+
+```go
+// Register a prompt that provides code examples in different programming languages
+server.RegisterPrompt(mcp.Prompt{
+	Name:        "code-example",
+	Description: "Provides code examples in different programming languages",
+	Arguments: []mcp.PromptArgument{
+		{
+			Name:        "language",
+			Description: "Programming language for the example",
+			Required:    true,
+		},
+		{
+			Name:        "complexity",
+			Description: "Complexity level (simple, medium, advanced)",
+		},
+	},
+	Handler: func(ctx context.Context, args map[string]string) ([]mcp.PromptMessage, error) {
+		var req struct {
+			Language   string `json:"language"`
+			Complexity string `json:"complexity,optional"`
+		}
+
+		if err := mcp.ParseArguments(args, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse args: %w", err)
+		}
+
+		// Validate language
+		supportedLanguages := map[string]bool{"go": true, "python": true, "javascript": true, "rust": true}
+		if !supportedLanguages[req.Language] {
+			return nil, fmt.Errorf("unsupported language: %s", req.Language)
+		}
+
+		// Generate code example based on language and complexity
+		var codeExample string
+
+		switch req.Language {
+		case "go":
+			if req.Complexity == "simple" {
+				codeExample = `
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello, World!")
+}`
+			} else {
+				codeExample = `
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	now := time.Now()
+	fmt.Printf("Hello, World! Current time is %s\n", now.Format(time.RFC3339))
+}`
+			}
+		case "python":
+			// Python example code
+			if req.Complexity == "simple" {
+				codeExample = `
+def greet(name):
+    return f"Hello, {name}!"
+
+print(greet("World"))`
+			} else {
+				codeExample = `
+import datetime
+
+def greet(name, include_time=False):
+    message = f"Hello, {name}!"
+    if include_time:
+        message += f" Current time is {datetime.datetime.now().isoformat()}"
+    return message
+
+print(greet("World", include_time=True))`
+			}
+		}
+
+		// Create messages array according to MCP spec
+		messages := []mcp.PromptMessage{
+			{
+				Role: mcp.RoleAssistant,
+				Content: mcp.TextContent{
+					Text: fmt.Sprintf("You are a helpful coding assistant specialized in %s programming.", req.Language),
+				},
+			},
+			{
+				Role: mcp.RoleUser,
+				Content: mcp.TextContent{
+					Text: fmt.Sprintf("Show me a %s example of a Hello World program in %s.", req.Complexity, req.Language),
+				},
+			},
+			{
+				Role: mcp.RoleAssistant,
+				Content: mcp.TextContent{
+					Text: fmt.Sprintf("Here's a %s example in %s:\n\n```%s%s\n```\n\nHow can I help you implement this?",
+						req.Complexity, req.Language, req.Language, codeExample),
+				},
+			},
+		}
+
+		return messages, nil
+	},
+})
+```
+
+### Registering Resources
+
+Resources provide access to external content such as files or generated data.
+
+#### Basic Resource Example:
+
+```go
+// Register a static resource
+server.RegisterResource(mcp.Resource{
+	Name:        "example-document",
+	URI:         "file:///example/document.txt",
+	Description: "An example document",
+	MimeType:    "text/plain",
+	Handler: func(ctx context.Context) (mcp.ResourceContent, error) {
+		return mcp.ResourceContent{
+			URI:      "file:///example/document.txt",
+			MimeType: "text/plain",
+			Text:     "This is an example document content.",
+		}, nil
+	},
+})
+```
+
+#### Dynamic Resource with Code Example:
+
+```go
+// Register a Go code resource with dynamic handler
+server.RegisterResource(mcp.Resource{
+	Name:        "go-example",
+	URI:         "file:///project/src/main.go",
+	Description: "A simple Go example with multiple files",
+	MimeType:    "text/x-go",
+	Handler: func(ctx context.Context) (mcp.ResourceContent, error) {
+		// Return ResourceContent with all required fields
+		return mcp.ResourceContent{
+			URI:      "file:///project/src/main.go",
+			MimeType: "text/x-go",
+			Text:     "package main\n\nimport (\n\t\"fmt\"\n\t\"./greeting\"\n)\n\nfunc main() {\n\tfmt.Println(greeting.Hello(\"world\"))\n}",
+		}, nil
+	},
+})
+
+// Register a companion file for the above example
+server.RegisterResource(mcp.Resource{
+	Name:        "go-greeting",
+	URI:         "file:///project/src/greeting/greeting.go",
+	Description: "A greeting package for the Go example",
+	MimeType:    "text/x-go",
+	Handler: func(ctx context.Context) (mcp.ResourceContent, error) {
+		return mcp.ResourceContent{
+			URI:      "file:///project/src/greeting/greeting.go",
+			MimeType: "text/x-go",
+			Text:     "package greeting\n\nfunc Hello(name string) string {\n\treturn \"Hello, \" + name + \"!\"\n}",
+		}, nil
+	},
+})
+```
+
+#### Binary Resource Example:
+
+```go
+// Register a binary resource (like an image)
+server.RegisterResource(mcp.Resource{
+	Name:        "example-image",
+	URI:         "file:///example/image.png",
+	Description: "An example image",
+	MimeType:    "image/png",
+	Handler: func(ctx context.Context) (mcp.ResourceContent, error) {
+		// Read image from file or generate it
+		imageData := "base64EncodedImageData..." // Base64 encoded image data
+
+		return mcp.ResourceContent{
+			URI:      "file:///example/image.png",
+			MimeType: "image/png",
+			Blob:     imageData, // For binary data
+		}, nil
+	},
+})
+```
+
+### Using Resources in Prompts
+
+You can embed resources in prompt responses to create rich interactions with proper MCP-compliant structure:
+
+```go
+// Register a prompt that embeds a resource
+server.RegisterPrompt(mcp.Prompt{
+	Name:        "resource-example",
+	Description: "A prompt that embeds a resource",
+	Arguments: []mcp.PromptArgument{
+		{
+			Name:        "file_type",
+			Description: "Type of file to show (rust or go)",
+			Required:    true,
+		},
+	},
+	Handler: func(ctx context.Context, args map[string]string) ([]mcp.PromptMessage, error) {
+		var req struct {
+			FileType string `json:"file_type"`
+		}
+
+		if err := mcp.ParseArguments(args, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse args: %w", err)
+		}
+
+		var resourceURI, mimeType, fileContent string
+		if req.FileType == "rust" {
+			resourceURI = "file:///project/src/main.rs"
+			mimeType = "text/x-rust"
+			fileContent = "fn main() {\n    println!(\"Hello world!\");\n}"
+		} else {
+			resourceURI = "file:///project/src/main.go"
+			mimeType = "text/x-go"
+			fileContent = "package main\n\nimport \"fmt\"\n\nfunc main() {\n\tfmt.Println(\"Hello, world!\")\n}"
+		}
+
+		// Create message with embedded resource using proper MCP format
+		return []mcp.PromptMessage{
+			{
+				Role: mcp.RoleUser,
+				Content: mcp.TextContent{
+					Text: fmt.Sprintf("Can you explain this %s code?", req.FileType),
+				},
+			},
+			{
+				Role: mcp.RoleAssistant,
+				Content: mcp.EmbeddedResource{
+					Type: mcp.ContentTypeResource,
+					Resource: struct {
+						URI      string `json:"uri"`
+						MimeType string `json:"mimeType"`
+						Text     string `json:"text,omitempty"`
+						Blob     string `json:"blob,omitempty"`
+					}{
+						URI:      resourceURI,
+						MimeType: mimeType,
+						Text:     fileContent,
+					},
+				},
+			},
+			{
+				Role: mcp.RoleAssistant,
+				Content: mcp.TextContent{
+					Text: fmt.Sprintf("Above is a simple Hello World example in %s. Let me explain how it works.", req.FileType),
+				},
+			},
+		}, nil
+	},
+})
+```
+
+### Multiple File Resources Example
+
+```go
+// Register a prompt that demonstrates embedding multiple resource files
+server.RegisterPrompt(mcp.Prompt{
+	Name:        "go-code-example",
+	Description: "A prompt that correctly embeds multiple resource files",
+	Arguments: []mcp.PromptArgument{
+		{
+			Name:        "format",
+			Description: "How to format the code display",
+		},
+	},
+	Handler: func(ctx context.Context, args map[string]string) ([]mcp.PromptMessage, error) {
+		var req struct {
+			Format string `json:"format,optional"`
+		}
+
+		if err := mcp.ParseArguments(args, &req); err != nil {
+			return nil, fmt.Errorf("failed to parse args: %w", err)
+		}
+
+		// Get the Go code for multiple files
+		var mainGoText string = "package main\n\nimport (\n\t\"fmt\"\n\t\"./greeting\"\n)\n\nfunc main() {\n\tfmt.Println(greeting.Hello(\"world\"))\n}"
+		var greetingGoText string = "package greeting\n\nfunc Hello(name string) string {\n\treturn \"Hello, \" + name + \"!\"\n}"
+
+		// Create message with properly formatted embedded resource per MCP spec
+		messages := []mcp.PromptMessage{
+			{
+				Role: mcp.RoleUser,
+				Content: mcp.TextContent{
+					Text: "Show me a simple Go example with proper imports.",
+				},
+			},
+			{
+				Role: mcp.RoleAssistant,
+				Content: mcp.TextContent{
+					Text: "Here's a simple Go example project:",
+				},
+			},
+			{
+				Role: mcp.RoleAssistant,
+				Content: mcp.EmbeddedResource{
+					Type: mcp.ContentTypeResource,
+					Resource: struct {
+						URI      string `json:"uri"`
+						MimeType string `json:"mimeType"`
+						Text     string `json:"text,omitempty"`
+						Blob     string `json:"blob,omitempty"`
+					}{
+						URI:      "file:///project/src/main.go",
+						MimeType: "text/x-go",
+						Text:     mainGoText,
+					},
+				},
+			},
+		}
+
+		// Add explanation and additional file if requested
+		if req.Format == "with_explanation" {
+			messages = append(messages, mcp.PromptMessage{
+				Role: mcp.RoleAssistant,
+				Content: mcp.TextContent{
+					Text: "This example demonstrates a simple Go application with modular structure. The main.go file imports from a local 'greeting' package that provides the Hello function.",
+				},
+			})
+
+			// Also show the greeting.go file with correct resource format
+			messages = append(messages, mcp.PromptMessage{
+				Role: mcp.RoleAssistant,
+				Content: mcp.EmbeddedResource{
+					Type: mcp.ContentTypeResource,
+					Resource: struct {
+						URI      string `json:"uri"`
+						MimeType string `json:"mimeType"`
+						Text     string `json:"text,omitempty"`
+						Blob     string `json:"blob,omitempty"`
+					}{
+						URI:      "file:///project/src/greeting/greeting.go",
+						MimeType: "text/x-go",
+						Text:     greetingGoText,
+					},
+				},
+			})
+		}
+
+		return messages, nil
+	},
+})
+```
+
+### Complete Application Example
+
+Here's a complete example demonstrating all the components:
+
+```go
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/zeromicro/go-zero/core/conf"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/mcp"
+)
+
+func main() {
+	// Load configuration
+	var c mcp.McpConf
+	if err := conf.Load("config.yaml", &c); err != nil {
+		log.Fatalf("Failed to load config: %v", err)
+	}
+
+	// Set up logging
+	logx.DisableStat()
+
+	// Create MCP server
+	server := mcp.NewMcpServer(c)
+	defer server.Stop()
+
+	// Register a simple echo tool
+	echoTool := mcp.Tool{
+		Name:        "echo",
+		Description: "Echoes back the message provided by the user",
+		InputSchema: mcp.InputSchema{
+			Properties: map[string]any{
+				"message": map[string]any{
+					"type":        "string",
+					"description": "The message to echo back",
+				},
+				"prefix": map[string]any{
+					"type":        "string",
+					"description": "Optional prefix to add to the echoed message",
+					"default":     "Echo: ",
+				},
+			},
+			Required: []string{"message"},
+		},
+		Handler: func(ctx context.Context, params map[string]any) (any, error) {
+			var req struct {
+				Message string `json:"message"`
+				Prefix  string `json:"prefix,optional"`
+			}
+
+			if err := mcp.ParseArguments(params, &req); err != nil {
+				return nil, fmt.Errorf("failed to parse args: %w", err)
+			}
+
+			prefix := "Echo: "
+			if len(req.Prefix) > 0 {
+				prefix = req.Prefix
+			}
+
+			return prefix + req.Message, nil
+		},
+	}
+	server.RegisterTool(echoTool)
+
+	// Register a static prompt
+	server.RegisterPrompt(mcp.Prompt{
+		Name:        "greeting",
+		Description: "A simple greeting prompt",
+		Arguments: []mcp.PromptArgument{
+			{
+				Name:        "name",
+				Description: "The name to greet",
+				Required:    true,
+			},
+		},
+		Content: "Hello {{name}}! How can I assist you today?",
+	})
+
+	// Register a dynamic prompt
+	server.RegisterPrompt(mcp.Prompt{
+		Name:        "dynamic-prompt",
+		Description: "A prompt that uses a handler to generate dynamic content",
+		Arguments: []mcp.PromptArgument{
+			{
+				Name:        "username",
+				Description: "User's name for personalized greeting",
+				Required:    true,
+			},
+			{
+				Name:        "topic",
+				Description: "Topic of expertise",
+				Required:    true,
+			},
+		},
+		Handler: func(ctx context.Context, args map[string]string) ([]mcp.PromptMessage, error) {
+			var req struct {
+				Username string `json:"username"`
+				Topic    string `json:"topic"`
+			}
+
+			if err := mcp.ParseArguments(args, &req); err != nil {
+				return nil, fmt.Errorf("failed to parse args: %w", err)
+			}
+
+			// Create messages with current time
+			currentTime := time.Now().Format(time.RFC1123)
+			return []mcp.PromptMessage{
+				{
+					Role: mcp.RoleUser,
+					Content: mcp.TextContent{
+						Text: fmt.Sprintf("Hello, I'm %s and I'd like to learn about %s.", req.Username, req.Topic),
+					},
+				},
+				{
+					Role: mcp.RoleAssistant,
+					Content: mcp.TextContent{
+						Text: fmt.Sprintf("Hello %s! I'm an AI assistant and I'll help you learn about %s. The current time is %s.",
+							req.Username, req.Topic, currentTime),
+					},
+				},
+			}, nil
+		},
+	})
+
+	// Register a resource
+	server.RegisterResource(mcp.Resource{
+		Name:        "example-doc",
+		URI:         "file:///example/doc.txt",
+		Description: "An example document",
+		MimeType:    "text/plain",
+		Handler: func(ctx context.Context) (mcp.ResourceContent, error) {
+			return mcp.ResourceContent{
+				URI:      "file:///example/doc.txt",
+				MimeType: "text/plain",
+				Text:     "This is the content of the example document.",
+			}, nil
+		},
+	})
+
+	// Start the server
+	fmt.Printf("Starting MCP server on %s:%d\n", c.Host, c.Port)
+	server.Start()
+}
+```
+
+## Error Handling
+
+The MCP implementation provides comprehensive error handling:
+
+- Tool execution errors are properly reported back to clients
+- Missing or invalid parameters are detected and reported with appropriate error codes
+- Resource and prompt lookup failures are handled gracefully
+- Timeout handling for long-running tool executions using context
+- Panic recovery to prevent server crashes
+
+## Advanced Features
+
+- **Annotations**: Add audience and priority metadata to content
+- **Content Types**: Support for text, images, audio, and other content formats
+- **Embedded Resources**: Include file resources directly in prompt responses
+- **Context Awareness**: All handlers receive context.Context for timeout and cancellation support
+- **Progress Tokens**: Support for tracking progress of long-running operations
+- **Customizable Timeouts**: Configure execution timeouts for tools and operations
+
+## Performance Considerations
+
+- Tool execution runs with configurable timeouts to prevent blocking
+- Efficient client tracking and cleanup to prevent resource leaks
+- Proper concurrency handling with mutex protection for shared resources
+- Buffered message channels to prevent blocking on client message delivery

mcp/server.go

@@ -0,0 +1,940 @@
+package mcp
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/rest"
+)
+
+func NewMcpServer(c McpConf) McpServer {
+	var server *rest.Server
+	if len(c.Mcp.Cors) == 0 {
+		server = rest.MustNewServer(c.RestConf)
+	} else {
+		server = rest.MustNewServer(c.RestConf, rest.WithCors(c.Mcp.Cors...))
+	}
+
+	if len(c.Mcp.Name) == 0 {
+		c.Mcp.Name = c.Name
+	}
+	if len(c.Mcp.BaseUrl) == 0 {
+		c.Mcp.BaseUrl = fmt.Sprintf("http://localhost:%d", c.Port)
+	}
+
+	s := &sseMcpServer{
+		conf:      c,
+		server:    server,
+		clients:   make(map[string]*mcpClient),
+		tools:     make(map[string]Tool),
+		prompts:   make(map[string]Prompt),
+		resources: make(map[string]Resource),
+	}
+
+	// SSE endpoint for real-time updates
+	s.server.AddRoute(rest.Route{
+		Method:  http.MethodGet,
+		Path:    s.conf.Mcp.SseEndpoint,
+		Handler: s.handleSSE,
+	}, rest.WithSSE(), rest.WithTimeout(c.Mcp.SseTimeout))
+
+	// JSON-RPC message endpoint for regular requests
+	s.server.AddRoute(rest.Route{
+		Method:  http.MethodPost,
+		Path:    s.conf.Mcp.MessageEndpoint,
+		Handler: s.handleRequest,
+	}, rest.WithTimeout(c.Mcp.MessageTimeout))
+
+	return s
+}
+
+// RegisterPrompt registers a new prompt with the server
+func (s *sseMcpServer) RegisterPrompt(prompt Prompt) {
+	s.promptsLock.Lock()
+	s.prompts[prompt.Name] = prompt
+	s.promptsLock.Unlock()
+	// Notify clients about the new prompt
+	s.broadcast(eventPromptsListChanged, map[string][]Prompt{keyPrompts: {prompt}})
+}
+
+// RegisterResource registers a new resource with the server
+func (s *sseMcpServer) RegisterResource(resource Resource) {
+	s.resourcesLock.Lock()
+	s.resources[resource.URI] = resource
+	s.resourcesLock.Unlock()
+	// Notify clients about the new resource
+	s.broadcast(eventResourcesListChanged, map[string][]Resource{keyResources: {resource}})
+}
+
+// RegisterTool registers a new tool with the server
+func (s *sseMcpServer) RegisterTool(tool Tool) error {
+	if tool.Handler == nil {
+		return fmt.Errorf("tool '%s' has no handler function", tool.Name)
+	}
+
+	s.toolsLock.Lock()
+	s.tools[tool.Name] = tool
+	s.toolsLock.Unlock()
+	// Notify clients about the new tool
+	s.broadcast(eventToolsListChanged, map[string][]Tool{keyTools: {tool}})
+	return nil
+}
+
+// Start implements McpServer.
+func (s *sseMcpServer) Start() {
+	s.server.Start()
+}
+
+func (s *sseMcpServer) Stop() {
+	s.server.Stop()
+}
+
+// broadcast sends a message to all connected clients
+// It uses Server-Sent Events (SSE) format for real-time communication
+func (s *sseMcpServer) broadcast(event string, data any) {
+	jsonData, err := json.Marshal(data)
+	if err != nil {
+		logx.Errorf("Failed to marshal broadcast data: %v", err)
+		return
+	}
+
+	// Lock only while reading the clients map
+	s.clientsLock.Lock()
+	clients := make([]*mcpClient, 0, len(s.clients))
+	for _, client := range s.clients {
+		clients = append(clients, client)
+	}
+	s.clientsLock.Unlock()
+
+	clientCount := len(clients)
+	if clientCount == 0 {
+		return
+	}
+
+	logx.Infof("Broadcasting event '%s' to %d clients", event, clientCount)
+
+	// Use CRLF line endings as per SSE specification
+	message := fmt.Sprintf("event: %s\r\ndata: %s\r\n\r\n", event, string(jsonData))
+
+	// Send messages without holding the lock
+	for _, client := range clients {
+		select {
+		case client.channel <- message:
+			// Message sent successfully
+		default:
+			// Channel buffer is full, log warning and continue
+			logx.Errorf("Client channel buffer full, dropping message for client %s", client.id)
+		}
+	}
+}
+
+// cleanupClient removes a client from the active clients map
+func (s *sseMcpServer) cleanupClient(sessionId string) {
+	s.clientsLock.Lock()
+	defer s.clientsLock.Unlock()
+
+	if client, exists := s.clients[sessionId]; exists {
+		// Close the channel to signal any goroutines waiting on it
+		close(client.channel)
+		// Remove from active clients
+		delete(s.clients, sessionId)
+		logx.Infof("Cleaned up client %s (remaining clients: %d)", sessionId, len(s.clients))
+	}
+}
+
+// handleRequest handles MCP JSON-RPC requests
+func (s *sseMcpServer) handleRequest(w http.ResponseWriter, r *http.Request) {
+	// Extract sessionId from query parameters
+	sessionId := r.URL.Query().Get(sessionIdKey)
+	if len(sessionId) == 0 {
+		http.Error(w, fmt.Sprintf("Missing %s", sessionIdKey), http.StatusBadRequest)
+		return
+	}
+
+	// Check if the client with this sessionId exists
+	s.clientsLock.Lock()
+	client, exists := s.clients[sessionId]
+	s.clientsLock.Unlock()
+
+	if !exists {
+		http.Error(w, fmt.Sprintf("Invalid or expired %s", sessionIdKey), http.StatusBadRequest)
+		return
+	}
+
+	var req Request
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, "Invalid request", http.StatusBadRequest)
+		return
+	}
+
+	// For notification methods (no ID), we don't send a response
+	isNotification, err := req.isNotification()
+	if err != nil {
+		http.Error(w, "Invalid request.ID", http.StatusBadRequest)
+	}
+
+	w.WriteHeader(http.StatusAccepted)
+
+	// Special handling for initialization sequence
+	// Always allow initialize and notifications/initialized regardless of client state
+	if req.Method == methodInitialize {
+		logx.Infof("Processing initialize request with ID: %v", req.ID)
+		s.processInitialize(r.Context(), client, req)
+		logx.Infof("Sent initialize response for ID: %v, waiting for notifications/initialized", req.ID)
+		return
+	} else if req.Method == methodNotificationsInitialized {
+		// Handle initialized notification
+		logx.Info("Received notifications/initialized notification")
+		if !isNotification {
+			s.sendErrorResponse(r.Context(), client, req.ID,
+				"Method should be used as a notification", errCodeInvalidRequest)
+			return
+		}
+		s.processNotificationInitialized(client)
+		return
+	} else if !client.initialized && req.Method != methodNotificationsCancelled {
+		// Block most requests until client is initialized (except for cancellations)
+		s.sendErrorResponse(r.Context(), client, req.ID,
+			"Client not fully initialized, waiting for notifications/initialized",
+			errCodeClientNotInitialized)
+		return
+	}
+
+	// Process normal requests only after initialization
+	switch req.Method {
+	case methodToolsCall:
+		logx.Infof("Received tools call request with ID: %v", req.ID)
+		s.processToolCall(r.Context(), client, req)
+		logx.Infof("Sent tools call response for ID: %v", req.ID)
+	case methodToolsList:
+		logx.Infof("Processing tools/list request with ID: %v", req.ID)
+		s.processListTools(r.Context(), client, req)
+		logx.Infof("Sent tools/list response for ID: %v", req.ID)
+	case methodPromptsList:
+		logx.Infof("Processing prompts/list request with ID: %v", req.ID)
+		s.processListPrompts(r.Context(), client, req)
+		logx.Infof("Sent prompts/list response for ID: %v", req.ID)
+	case methodPromptsGet:
+		logx.Infof("Processing prompts/get request with ID: %v", req.ID)
+		s.processGetPrompt(r.Context(), client, req)
+		logx.Infof("Sent prompts/get response for ID: %v", req.ID)
+	case methodResourcesList:
+		logx.Infof("Processing resources/list request with ID: %v", req.ID)
+		s.processListResources(r.Context(), client, req)
+		logx.Infof("Sent resources/list response for ID: %v", req.ID)
+	case methodResourcesRead:
+		logx.Infof("Processing resources/read request with ID: %v", req.ID)
+		s.processResourcesRead(r.Context(), client, req)
+		logx.Infof("Sent resources/read response for ID: %v", req.ID)
+	case methodResourcesSubscribe:
+		logx.Infof("Processing resources/subscribe request with ID: %v", req.ID)
+		s.processResourceSubscribe(r.Context(), client, req)
+		logx.Infof("Sent resources/subscribe response for ID: %v", req.ID)
+	case methodPing:
+		logx.Infof("Processing ping request with ID: %v", req.ID)
+		s.processPing(r.Context(), client, req)
+	case methodNotificationsCancelled:
+		logx.Infof("Received notifications/cancelled notification: %v", req.ID)
+		s.processNotificationCancelled(r.Context(), client, req)
+	default:
+		logx.Infof("Unknown method: %s from client: %v", req.Method, req.ID)
+		s.sendErrorResponse(r.Context(), client, req.ID, "Method not found", errCodeMethodNotFound)
+	}
+}
+
+// handleSSE handles Server-Sent Events connections
+func (s *sseMcpServer) handleSSE(w http.ResponseWriter, r *http.Request) {
+	// Generate a unique session ID for this client
+	sessionId := uuid.New().String()
+
+	// Create new client with buffered channel to prevent blocking
+	client := &mcpClient{
+		id:      sessionId,
+		channel: make(chan string, eventChanSize),
+	}
+
+	// Add client to active clients map
+	s.clientsLock.Lock()
+	s.clients[sessionId] = client
+	activeClients := len(s.clients)
+	s.clientsLock.Unlock()
+
+	logx.Infof("New SSE connection established for client %s (active clients: %d)",
+		sessionId, activeClients)
+
+	// Set proper SSE headers
+	w.Header().Set("Transfer-Encoding", "chunked")
+
+	// Enable streaming
+	flusher, ok := w.(http.Flusher)
+	if !ok {
+		logx.Error("Streaming not supported by the underlying http.ResponseWriter")
+		http.Error(w, "Streaming not supported", http.StatusInternalServerError)
+		return
+	}
+
+	// Send the message endpoint URL to the client
+	endpoint := fmt.Sprintf("%s%s?%s=%s",
+		s.conf.Mcp.BaseUrl, s.conf.Mcp.MessageEndpoint, sessionIdKey, sessionId)
+
+	// Format and send the endpoint message
+	endpointMsg := formatSSEMessage(eventEndpoint, []byte(endpoint))
+	if _, err := fmt.Fprint(w, endpointMsg); err != nil {
+		logx.Errorf("Failed to send endpoint message to client %s: %v", sessionId, err)
+		s.cleanupClient(sessionId)
+		return
+	}
+	flusher.Flush()
+
+	// Set up keep-alive ping and client cleanup
+	ticker := time.NewTicker(pingInterval.Load())
+	defer func() {
+		ticker.Stop()
+		s.cleanupClient(sessionId)
+		logx.Infof("SSE connection closed for client %s", sessionId)
+	}()
+
+	// Message processing loop
+	for {
+		select {
+		case message, ok := <-client.channel:
+			if !ok {
+				// Channel was closed, end connection
+				logx.Infof("Client channel was closed for %s", sessionId)
+				return
+			}
+
+			// Write message to the response
+			if _, err := fmt.Fprint(w, message); err != nil {
+				logx.Infof("Failed to write message to client %s: %v", sessionId, err)
+				return
+			}
+			flusher.Flush()
+		case <-ticker.C:
+			// Send keep-alive ping to maintain connection
+			ping := fmt.Sprintf(`{"type":"ping","timestamp":"%s"}`, time.Now().String())
+			pingMsg := formatSSEMessage("ping", []byte(ping))
+			if _, err := fmt.Fprint(w, pingMsg); err != nil {
+				logx.Errorf("Failed to send ping to client %s, closing connection: %v", sessionId, err)
+				return
+			}
+			flusher.Flush()
+		case <-r.Context().Done():
+			// Client disconnected or request was canceled or timed out
+			logx.Infof("Client %s disconnected: context done", sessionId)
+			return
+		}
+	}
+}
+
+// processInitialize processes the initialize request
+func (s *sseMcpServer) processInitialize(ctx context.Context, client *mcpClient, req Request) {
+	// Create a proper JSON-RPC response that preserves the client's request ID
+	result := initializationResponse{
+		ProtocolVersion: s.conf.Mcp.ProtocolVersion,
+		Capabilities: capabilities{
+			Prompts: struct {
+				ListChanged bool `json:"listChanged"`
+			}{
+				ListChanged: true,
+			},
+			Resources: struct {
+				Subscribe   bool `json:"subscribe"`
+				ListChanged bool `json:"listChanged"`
+			}{
+				Subscribe:   true,
+				ListChanged: true,
+			},
+			Tools: struct {
+				ListChanged bool `json:"listChanged"`
+			}{
+				ListChanged: true,
+			},
+		},
+		ServerInfo: serverInfo{
+			Name:    s.conf.Mcp.Name,
+			Version: s.conf.Mcp.Version,
+		},
+	}
+
+	// Mark client as initialized
+	client.initialized = true
+
+	// Send response with client's original request ID
+	s.sendResponse(ctx, client, req.ID, result)
+}
+
+// processListTools processes the tools/list request
+func (s *sseMcpServer) processListTools(ctx context.Context, client *mcpClient, req Request) {
+	// Extract pagination params if any
+	var nextCursor string
+	var progressToken any
+
+	// Extract meta data including progress token
+	if req.Params != nil {
+		var metaParams struct {
+			Cursor string `json:"cursor"`
+			Meta   struct {
+				ProgressToken any `json:"progressToken"`
+			} `json:"_meta"`
+		}
+		if err := json.Unmarshal(req.Params, &metaParams); err == nil {
+			if len(metaParams.Cursor) > 0 {
+				nextCursor = metaParams.Cursor
+			}
+			progressToken = metaParams.Meta.ProgressToken
+		}
+	}
+
+	var toolsList []Tool
+	s.toolsLock.Lock()
+	for _, tool := range s.tools {
+		if len(tool.InputSchema.Type) == 0 {
+			tool.InputSchema.Type = ContentTypeObject
+		}
+		toolsList = append(toolsList, tool)
+	}
+	s.toolsLock.Unlock()
+
+	result := ListToolsResult{
+		PaginatedResult: PaginatedResult{
+			Result:     Result{},
+			NextCursor: Cursor(nextCursor),
+		},
+		Tools: toolsList,
+	}
+
+	// Add meta information if progress token was provided
+	if progressToken != nil {
+		result.Result.Meta = map[string]any{
+			progressTokenKey: progressToken,
+		}
+	}
+
+	s.sendResponse(ctx, client, req.ID, result)
+}
+
+// processListPrompts processes the prompts/list request
+func (s *sseMcpServer) processListPrompts(ctx context.Context, client *mcpClient, req Request) {
+	// Extract pagination params if any
+	var nextCursor string
+	if req.Params != nil {
+		var cursorParams struct {
+			Cursor string `json:"cursor"`
+		}
+		if err := json.Unmarshal(req.Params, &cursorParams); err == nil && cursorParams.Cursor != "" {
+			// If we have a valid cursor, we could use it for pagination
+			// For now, we're not actually implementing pagination, so this is just
+			// to show how it would be extracted from the request
+			_ = cursorParams.Cursor
+		}
+	}
+
+	// Prepare prompt list
+	var promptsList []Prompt
+	s.promptsLock.Lock()
+	for _, prompt := range s.prompts {
+		promptsList = append(promptsList, prompt)
+	}
+	s.promptsLock.Unlock()
+
+	// In a real implementation, you'd handle pagination here
+	// For now, we'll return all prompts at once
+	result := struct {
+		Prompts    []Prompt  `json:"prompts"`
+		NextCursor string    `json:"nextCursor,omitempty"`
+		Meta       *struct{} `json:"_meta,omitempty"`
+	}{
+		Prompts:    promptsList,
+		NextCursor: nextCursor,
+	}
+
+	s.sendResponse(ctx, client, req.ID, result)
+}
+
+// processListResources processes the resources/list request
+func (s *sseMcpServer) processListResources(ctx context.Context, client *mcpClient, req Request) {
+	// Extract pagination params if any
+	var nextCursor string
+	var progressToken any
+
+	// Extract meta information including progress token if available
+	if req.Params != nil {
+		var metaParams PaginatedParams
+		if err := json.Unmarshal(req.Params, &metaParams); err == nil {
+			if len(metaParams.Cursor) > 0 {
+				nextCursor = metaParams.Cursor
+			}
+			progressToken = metaParams.Meta.ProgressToken
+		}
+	}
+
+	var resourcesList []Resource
+	s.resourcesLock.Lock()
+	for _, resource := range s.resources {
+		// Create a copy without the handler function which shouldn't be sent to clients
+		resourceCopy := Resource{
+			URI:         resource.URI,
+			Name:        resource.Name,
+			Description: resource.Description,
+			MimeType:    resource.MimeType,
+		}
+		resourcesList = append(resourcesList, resourceCopy)
+	}
+	s.resourcesLock.Unlock()
+
+	// Create proper ResourcesListResult according to MCP specification
+	result := ResourcesListResult{
+		PaginatedResult: PaginatedResult{
+			Result:     Result{},
+			NextCursor: Cursor(nextCursor),
+		},
+		Resources: resourcesList,
+	}
+
+	// Add meta information if progress token was provided
+	if progressToken != nil {
+		result.Result.Meta = map[string]any{
+			progressTokenKey: progressToken,
+		}
+	}
+
+	s.sendResponse(ctx, client, req.ID, result)
+}
+
+// processGetPrompt processes the prompts/get request
+func (s *sseMcpServer) processGetPrompt(ctx context.Context, client *mcpClient, req Request) {
+	type GetPromptParams struct {
+		Name      string            `json:"name"`
+		Arguments map[string]string `json:"arguments,omitempty"`
+	}
+
+	var params GetPromptParams
+	if err := json.Unmarshal(req.Params, &params); err != nil {
+		s.sendErrorResponse(ctx, client, req.ID, "Invalid parameters", errCodeInvalidParams)
+		return
+	}
+
+	// Check if prompt exists
+	s.promptsLock.Lock()
+	prompt, exists := s.prompts[params.Name]
+	s.promptsLock.Unlock()
+	if !exists {
+		message := fmt.Sprintf("Prompt '%s' not found", params.Name)
+		s.sendErrorResponse(ctx, client, req.ID, message, errCodeInvalidParams)
+		return
+	}
+
+	logx.Infof("Processing prompt request: %s with %d arguments", prompt.Name, len(params.Arguments))
+
+	// Validate required arguments
+	missingArgs := validatePromptArguments(prompt, params.Arguments)
+	if len(missingArgs) > 0 {
+		message := fmt.Sprintf("Missing required arguments: %s", strings.Join(missingArgs, ", "))
+		s.sendErrorResponse(ctx, client, req.ID, message, errCodeInvalidParams)
+		return
+	}
+
+	// Ensure arguments are initialized to an empty map if nil
+	if params.Arguments == nil {
+		params.Arguments = make(map[string]string)
+	}
+	args := params.Arguments
+
+	// Generate messages using handler or static content
+	var messages []PromptMessage
+	var err error
+
+	if prompt.Handler != nil {
+		// Use dynamic handler to generate messages
+		messages, err = prompt.Handler(ctx, args)
+		if err != nil {
+			logx.Errorf("Error from prompt handler: %v", err)
+			s.sendErrorResponse(ctx, client, req.ID,
+				fmt.Sprintf("Error generating prompt content: %v", err), errCodeInternalError)
+			return
+		}
+	} else {
+		// No handler, generate messages from static content
+		var messageText string
+		if len(prompt.Content) > 0 {
+			messageText = prompt.Content
+
+			// Apply argument substitutions to static content
+			for key, value := range args {
+				placeholder := fmt.Sprintf("{{%s}}", key)
+				messageText = strings.Replace(messageText, placeholder, value, -1)
+			}
+		}
+
+		// Create a single user message with the content
+		messages = []PromptMessage{
+			{
+				Role: RoleUser,
+				Content: TextContent{
+					Text: messageText,
+				},
+			},
+		}
+	}
+
+	// Construct the response according to MCP spec
+	result := struct {
+		Description string          `json:"description,omitempty"`
+		Messages    []PromptMessage `json:"messages"`
+	}{
+		Description: prompt.Description,
+		Messages:    toTypedPromptMessages(messages),
+	}
+
+	s.sendResponse(ctx, client, req.ID, result)
+}
+
+// processToolCall processes the tools/call request
+func (s *sseMcpServer) processToolCall(ctx context.Context, client *mcpClient, req Request) {
+	var toolCallParams struct {
+		Name      string         `json:"name"`
+		Arguments map[string]any `json:"arguments,omitempty"`
+		Meta      struct {
+			ProgressToken any `json:"progressToken"`
+		} `json:"_meta,omitempty"`
+	}
+
+	// Handle different types of req.Params
+	// If it's a RawMessage (JSON), unmarshal it
+	if err := json.Unmarshal(req.Params, &toolCallParams); err != nil {
+		logx.Errorf("Failed to unmarshal tool call params: %v", err)
+		s.sendErrorResponse(ctx, client, req.ID, "Invalid tool call parameters", errCodeInvalidParams)
+		return
+	}
+
+	// Extract progress token if available
+	progressToken := toolCallParams.Meta.ProgressToken
+
+	// Find the requested tool
+	s.toolsLock.Lock()
+	tool, exists := s.tools[toolCallParams.Name]
+	s.toolsLock.Unlock()
+	if !exists {
+		s.sendErrorResponse(ctx, client, req.ID, fmt.Sprintf("Tool '%s' not found",
+			toolCallParams.Name), errCodeInvalidParams)
+		return
+	}
+
+	// Log parameters before execution
+	logx.Infof("Executing tool '%s' with arguments: %#v", toolCallParams.Name, toolCallParams.Arguments)
+
+	// Execute the tool handler with timeout handling
+	var result any
+	var err error
+
+	// Create a channel to receive the result
+	// make sure to have 1 size buffer to avoid channel leak if timeout
+	resultCh := make(chan struct {
+		result any
+		err    error
+	}, 1)
+
+	// Execute the tool handler in a goroutine
+	go func() {
+		toolResult, toolErr := tool.Handler(ctx, toolCallParams.Arguments)
+		resultCh <- struct {
+			result any
+			err    error
+		}{
+			result: toolResult,
+			err:    toolErr,
+		}
+	}()
+
+	// Wait for either the result or a timeout
+	select {
+	case res := <-resultCh:
+		result = res.result
+		err = res.err
+	case <-ctx.Done():
+		// Handle request timeout
+		logx.Errorf("Tool execution timed out after %v: %s", s.conf.Mcp.MessageTimeout, toolCallParams.Name)
+		s.sendErrorResponse(ctx, client, req.ID, "Tool execution timed out", errCodeTimeout)
+		return
+	}
+
+	// Create the base result structure with metadata
+	callToolResult := CallToolResult{
+		Result:  Result{},
+		Content: []any{},
+		IsError: false,
+	}
+
+	// Add meta information if progress token was provided
+	if progressToken != nil {
+		callToolResult.Result.Meta = map[string]any{
+			progressTokenKey: progressToken,
+		}
+	}
+
+	// Check if there was an error during tool execution
+	if err != nil {
+		// According to the spec, for tool-level errors (as opposed to protocol-level errors),
+		// we should report them inside the result with isError=true
+		logx.Errorf("Tool execution reported error: %v", err)
+
+		callToolResult.Content = []any{
+			TextContent{
+				Text: fmt.Sprintf("Error: %v", err),
+			},
+		}
+		callToolResult.IsError = true
+		s.sendResponse(ctx, client, req.ID, callToolResult)
+		return
+	}
+
+	// Format the response according to the CallToolResult schema
+	switch v := result.(type) {
+	case string:
+		// Simple string becomes text content
+		callToolResult.Content = append(callToolResult.Content, TextContent{
+			Text: v,
+			Annotations: &Annotations{
+				Audience: []RoleType{RoleUser, RoleAssistant},
+			},
+		})
+	case map[string]any:
+		// JSON-like object becomes formatted JSON text
+		jsonStr, err := json.Marshal(v)
+		if err != nil {
+			jsonStr = []byte(err.Error())
+		}
+		callToolResult.Content = append(callToolResult.Content, TextContent{
+			Text: string(jsonStr),
+			Annotations: &Annotations{
+				Audience: []RoleType{RoleUser, RoleAssistant},
+			},
+		})
+	case TextContent:
+		callToolResult.Content = append(callToolResult.Content, v)
+	case ImageContent:
+		callToolResult.Content = append(callToolResult.Content, v)
+	case []any:
+		callToolResult.Content = v
+	case ToolResult:
+		// Handle legacy ToolResult type
+		switch v.Type {
+		case ContentTypeText:
+			callToolResult.Content = append(callToolResult.Content, TextContent{
+				Text: fmt.Sprintf("%v", v.Content),
+				Annotations: &Annotations{
+					Audience: []RoleType{RoleUser, RoleAssistant},
+				},
+			})
+		case ContentTypeImage:
+			if imgData, ok := v.Content.(map[string]any); ok {
+				callToolResult.Content = append(callToolResult.Content, ImageContent{
+					Data:     fmt.Sprintf("%v", imgData["data"]),
+					MimeType: fmt.Sprintf("%v", imgData["mimeType"]),
+				})
+			}
+		default:
+			callToolResult.Content = append(callToolResult.Content, TextContent{
+				Text: fmt.Sprintf("%v", v.Content),
+				Annotations: &Annotations{
+					Audience: []RoleType{RoleUser, RoleAssistant},
+				},
+			})
+		}
+	default:
+		// For any other type, convert to string
+		callToolResult.Content = append(callToolResult.Content, TextContent{
+			Text: fmt.Sprintf("%v", v),
+			Annotations: &Annotations{
+				Audience: []RoleType{RoleUser, RoleAssistant},
+			},
+		})
+	}
+
+	callToolResult.Content = toTypedContents(callToolResult.Content)
+	logx.Infof("Tool call result: %#v", callToolResult)
+
+	s.sendResponse(ctx, client, req.ID, callToolResult)
+}
+
+// processResourcesRead processes the resources/read request
+func (s *sseMcpServer) processResourcesRead(ctx context.Context, client *mcpClient, req Request) {
+	var params ResourceReadParams
+	if err := json.Unmarshal(req.Params, &params); err != nil {
+		s.sendErrorResponse(ctx, client, req.ID, "Invalid parameters", errCodeInvalidParams)
+		return
+	}
+
+	// Find resource that matches the URI
+	s.resourcesLock.Lock()
+	resource, exists := s.resources[params.URI]
+	s.resourcesLock.Unlock()
+
+	if !exists {
+		s.sendErrorResponse(ctx, client, req.ID, fmt.Sprintf("Resource with URI '%s' not found",
+			params.URI), errCodeResourceNotFound)
+		return
+	}
+
+	// If no handler is provided, return an empty content array
+	if resource.Handler == nil {
+		result := ResourceReadResult{
+			Contents: []ResourceContent{
+				{
+					URI:      params.URI,
+					MimeType: resource.MimeType,
+					Text:     "",
+				},
+			},
+		}
+		s.sendResponse(ctx, client, req.ID, result)
+		return
+	}
+
+	// Execute the resource handler
+	content, err := resource.Handler(ctx)
+	if err != nil {
+		s.sendErrorResponse(ctx, client, req.ID, fmt.Sprintf("Error reading resource: %v", err),
+			errCodeInternalError)
+		return
+	}
+
+	// Ensure the URI is set if not already provided by the handler
+	if len(content.URI) == 0 {
+		content.URI = params.URI
+	}
+
+	// Ensure MimeType is set if available from the resource definition
+	if len(content.MimeType) == 0 && len(resource.MimeType) > 0 {
+		content.MimeType = resource.MimeType
+	}
+
+	// Create response with contents from the handler
+	// The MCP specification requires a contents array
+	result := ResourceReadResult{
+		Contents: []ResourceContent{content},
+	}
+
+	s.sendResponse(ctx, client, req.ID, result)
+}
+
+// processResourceSubscribe processes the resources/subscribe request
+func (s *sseMcpServer) processResourceSubscribe(ctx context.Context, client *mcpClient, req Request) {
+	var params ResourceSubscribeParams
+	if err := json.Unmarshal(req.Params, &params); err != nil {
+		s.sendErrorResponse(ctx, client, req.ID, "Invalid parameters", errCodeInvalidParams)
+		return
+	}
+
+	// Check if the resource exists
+	s.resourcesLock.Lock()
+	_, exists := s.resources[params.URI]
+	s.resourcesLock.Unlock()
+
+	if !exists {
+		s.sendErrorResponse(ctx, client, req.ID, fmt.Sprintf("Resource with URI '%s' not found",
+			params.URI), errCodeResourceNotFound)
+		return
+	}
+
+	// Send success response for the subscription
+	s.sendResponse(ctx, client, req.ID, struct{}{})
+}
+
+// processNotificationCancelled processes the notifications/cancelled notification
+func (s *sseMcpServer) processNotificationCancelled(ctx context.Context, client *mcpClient, req Request) {
+	// Extract the requestId that was canceled
+	type CancelParams struct {
+		RequestId int64  `json:"requestId"`
+		Reason    string `json:"reason"`
+	}
+
+	var params CancelParams
+	if err := json.Unmarshal(req.Params, &params); err != nil {
+		logx.Errorf("Failed to parse cancellation params: %v", err)
+		return
+	}
+
+	logx.Infof("Request %d was cancelled by client. Reason: %s", params.RequestId, params.Reason)
+}
+
+// processNotificationInitialized processes the notifications/initialized notification
+func (s *sseMcpServer) processNotificationInitialized(client *mcpClient) {
+	// Mark the client as properly initialized
+	client.initialized = true
+	logx.Infof("Client %s is now fully initialized and ready for normal operations", client.id)
+}
+
+// processPing processes the ping request and responds immediately
+func (s *sseMcpServer) processPing(ctx context.Context, client *mcpClient, req Request) {
+	// A ping request should simply respond with an empty result to confirm the server is alive
+	logx.Infof("Received ping request with ID: %d", req.ID)
+
+	// Send an empty response with client's original request ID
+	s.sendResponse(ctx, client, req.ID, struct{}{})
+}
+
+// sendErrorResponse sends an error response via the SSE channel
+func (s *sseMcpServer) sendErrorResponse(ctx context.Context, client *mcpClient,
+	id any, message string, code int) {
+	errorResponse := struct {
+		JsonRpc string       `json:"jsonrpc"`
+		ID      any          `json:"id"`
+		Error   errorMessage `json:"error"`
+	}{
+		JsonRpc: jsonRpcVersion,
+		ID:      id,
+		Error: errorMessage{
+			Code:    code,
+			Message: message,
+		},
+	}
+
+	// all fields are primitive types, impossible to fail
+	jsonData, _ := json.Marshal(errorResponse)
+	// Use CRLF line endings as requested
+	sseMessage := fmt.Sprintf("event: %s\r\ndata: %s\r\n\r\n", eventMessage, string(jsonData))
+	logx.Infof("Sending error for ID %v: %s", id, sseMessage)
+
+	// cannot receive from ctx.Done() because we're sending to the channel for SSE messages
+	select {
+	case client.channel <- sseMessage:
+	default:
+		// Channel buffer is full, log warning and continue
+		logx.Infof("Client %s channel is full while sending error response with ID %d", client.id, id)
+	}
+}
+
+// sendResponse sends a success response via the SSE channel
+func (s *sseMcpServer) sendResponse(ctx context.Context, client *mcpClient, id any, result any) {
+	response := Response{
+		JsonRpc: jsonRpcVersion,
+		ID:      id,
+		Result:  result,
+	}
+
+	jsonData, err := json.Marshal(response)
+	if err != nil {
+		s.sendErrorResponse(ctx, client, id, "Failed to marshal response", errCodeInternalError)
+		return
+	}
+
+	// Use CRLF line endings as requested
+	sseMessage := fmt.Sprintf("event: %s\r\ndata: %s\r\n\r\n", eventMessage, string(jsonData))
+	logx.Infof("Sending response for ID %v: %s", id, sseMessage)
+
+	// cannot receive from ctx.Done() because we're sending to the channel for SSE messages
+	select {
+	case client.channel <- sseMessage:
+	default:
+		// Channel buffer is full, log warning and continue
+		logx.Infof("Client %s channel is full while sending response with ID %v", client.id, id)
+	}
+}

mcp/types.go

@@ -0,0 +1,317 @@
+package mcp
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"sync"
+
+	"github.com/zeromicro/go-zero/rest"
+)
+
+// Cursor is an opaque token used for pagination
+type Cursor string
+
+// Request represents a generic MCP request following JSON-RPC 2.0 specification
+type Request struct {
+	SessionId string          `form:"session_id"` // Session identifier for client tracking
+	JsonRpc   string          `json:"jsonrpc"`    // Must be "2.0" per JSON-RPC spec
+	ID        any             `json:"id"`         // Request identifier for matching responses
+	Method    string          `json:"method"`     // Method name to invoke
+	Params    json.RawMessage `json:"params"`     // Parameters for the method
+}
+
+func (r Request) isNotification() (bool, error) {
+	switch val := r.ID.(type) {
+	case int:
+		return val == 0, nil
+	case int64:
+		return val == 0, nil
+	case float64:
+		return val == 0.0, nil
+	case string:
+		return len(val) == 0, nil
+	case nil:
+		return true, nil
+	default:
+		return false, fmt.Errorf("invalid type %T", val)
+	}
+}
+
+type PaginatedParams struct {
+	Cursor string `json:"cursor"`
+	Meta   struct {
+		ProgressToken any `json:"progressToken"`
+	} `json:"_meta"`
+}
+
+// Result is the base interface for all results
+type Result struct {
+	Meta map[string]any `json:"_meta,omitempty"` // Optional metadata
+}
+
+// PaginatedResult is a base for results that support pagination
+type PaginatedResult struct {
+	Result
+	NextCursor Cursor `json:"nextCursor,omitempty"` // Opaque token for fetching next page
+}
+
+// ListToolsResult represents the response to a tools/list request
+type ListToolsResult struct {
+	PaginatedResult
+	Tools []Tool `json:"tools"` // List of available tools
+}
+
+// Message Content Types
+
+// RoleType represents the sender or recipient of messages in a conversation
+type RoleType string
+
+// PromptArgument defines a single argument that can be passed to a prompt
+type PromptArgument struct {
+	Name        string `json:"name"`                  // Argument name
+	Description string `json:"description,omitempty"` // Human-readable description
+	Required    bool   `json:"required,omitempty"`    // Whether this argument is required
+}
+
+// PromptHandler is a function that dynamically generates prompt content
+type PromptHandler func(ctx context.Context, args map[string]string) ([]PromptMessage, error)
+
+// Prompt represents an MCP Prompt definition
+type Prompt struct {
+	Name        string           `json:"name"`                  // Unique identifier for the prompt
+	Description string           `json:"description,omitempty"` // Human-readable description
+	Arguments   []PromptArgument `json:"arguments,omitempty"`   // Arguments for customization
+	Content     string           `json:"-"`                     // Static content (internal use only)
+	Handler     PromptHandler    `json:"-"`                     // Handler for dynamic content generation
+}
+
+// PromptMessage represents a message in a conversation
+type PromptMessage struct {
+	Role    RoleType `json:"role"`    // Message sender role
+	Content any      `json:"content"` // Message content (TextContent, ImageContent, etc.)
+}
+
+// TextContent represents text content in a message
+type TextContent struct {
+	Text        string       `json:"text"`                  // The text content
+	Annotations *Annotations `json:"annotations,omitempty"` // Optional annotations
+}
+
+type typedTextContent struct {
+	Type string `json:"type"`
+	TextContent
+}
+
+// ImageContent represents image data in a message
+type ImageContent struct {
+	Data     string `json:"data"`     // Base64-encoded image data
+	MimeType string `json:"mimeType"` // MIME type (e.g., "image/png")
+}
+
+type typedImageContent struct {
+	Type string `json:"type"`
+	ImageContent
+}
+
+// AudioContent represents audio data in a message
+type AudioContent struct {
+	Data     string `json:"data"`     // Base64-encoded audio data
+	MimeType string `json:"mimeType"` // MIME type (e.g., "audio/mp3")
+}
+
+type typedAudioContent struct {
+	Type string `json:"type"`
+	AudioContent
+}
+
+// FileContent represents file content
+type FileContent struct {
+	URI      string `json:"uri"`      // URI identifying the file
+	MimeType string `json:"mimeType"` // MIME type of the file
+	Text     string `json:"text"`     // File content as text
+}
+
+// EmbeddedResource represents a resource embedded in a message
+type EmbeddedResource struct {
+	Type     string          `json:"type"`     // Always "resource"
+	Resource ResourceContent `json:"resource"` // The resource data
+}
+
+// Annotations provides additional metadata for content
+type Annotations struct {
+	Audience []RoleType `json:"audience,omitempty"` // Who should see this content
+	Priority *float64   `json:"priority,omitempty"` // Optional priority (0-1)
+}
+
+// Tool-related Types
+
+// ToolHandler is a function that handles tool calls
+type ToolHandler func(ctx context.Context, params map[string]any) (any, error)
+
+// Tool represents a Model Context Protocol Tool definition
+type Tool struct {
+	Name        string      `json:"name"`        // Unique identifier for the tool
+	Description string      `json:"description"` // Human-readable description
+	InputSchema InputSchema `json:"inputSchema"` // JSON Schema for parameters
+	Handler     ToolHandler `json:"-"`           // Not sent to clients
+}
+
+// InputSchema represents tool's input schema in JSON Schema format
+type InputSchema struct {
+	Type       string         `json:"type"`
+	Properties map[string]any `json:"properties"`         // Property definitions
+	Required   []string       `json:"required,omitempty"` // List of required properties
+}
+
+// CallToolResult represents a tool call result that conforms to the MCP schema
+type CallToolResult struct {
+	Result
+	Content []any `json:"content"`           // Content items (text, images, etc.)
+	IsError bool  `json:"isError,omitempty"` // True if tool execution failed
+}
+
+// Resource represents a Model Context Protocol Resource definition
+type Resource struct {
+	URI         string          `json:"uri"`                   // Unique resource identifier (RFC3986)
+	Name        string          `json:"name"`                  // Human-readable name
+	Description string          `json:"description,omitempty"` // Optional description
+	MimeType    string          `json:"mimeType,omitempty"`    // Optional MIME type
+	Handler     ResourceHandler `json:"-"`                     // Internal handler not sent to clients
+}
+
+// ResourceHandler is a function that handles resource read requests
+type ResourceHandler func(ctx context.Context) (ResourceContent, error)
+
+// ResourceContent represents the content of a resource
+type ResourceContent struct {
+	URI      string `json:"uri"`                // Resource URI (required)
+	MimeType string `json:"mimeType,omitempty"` // MIME type of the resource
+	Text     string `json:"text,omitempty"`     // Text content (if available)
+	Blob     string `json:"blob,omitempty"`     // Base64 encoded blob data (if available)
+}
+
+// ResourcesListResult represents the response to a resources/list request
+type ResourcesListResult struct {
+	PaginatedResult
+	Resources []Resource `json:"resources"` // List of available resources
+}
+
+// ResourceReadParams contains parameters for a resources/read request
+type ResourceReadParams struct {
+	URI string `json:"uri"` // URI of the resource to read
+}
+
+// ResourceReadResult contains the result of a resources/read request
+type ResourceReadResult struct {
+	Result
+	Contents []ResourceContent `json:"contents"` // Array of resource content
+}
+
+// ResourceSubscribeParams contains parameters for a resources/subscribe request
+type ResourceSubscribeParams struct {
+	URI string `json:"uri"` // URI of the resource to subscribe to
+}
+
+// ResourceUpdateNotification represents a notification about a resource update
+type ResourceUpdateNotification struct {
+	URI     string          `json:"uri"`     // URI of the updated resource
+	Content ResourceContent `json:"content"` // New resource content
+}
+
+// Client and Server Types
+
+// mcpClient represents an SSE client connection
+type mcpClient struct {
+	id          string      // Unique client identifier
+	channel     chan string // Channel for sending SSE messages
+	initialized bool        // Tracks if client has sent notifications/initialized
+}
+
+// McpServer defines the interface for Model Context Protocol servers
+type McpServer interface {
+	Start()
+	Stop()
+	RegisterTool(tool Tool) error
+	RegisterPrompt(prompt Prompt)
+	RegisterResource(resource Resource)
+}
+
+// sseMcpServer implements the McpServer interface using SSE
+type sseMcpServer struct {
+	conf          McpConf
+	server        *rest.Server
+	clients       map[string]*mcpClient
+	clientsLock   sync.Mutex
+	tools         map[string]Tool
+	toolsLock     sync.Mutex
+	prompts       map[string]Prompt
+	promptsLock   sync.Mutex
+	resources     map[string]Resource
+	resourcesLock sync.Mutex
+}
+
+// Response Types
+
+// errorObj represents a JSON-RPC error object
+type errorObj struct {
+	Code    int    `json:"code"`    // Error code
+	Message string `json:"message"` // Error message
+}
+
+// Response represents a JSON-RPC response
+type Response struct {
+	JsonRpc string    `json:"jsonrpc"`         // Always "2.0"
+	ID      any       `json:"id"`              // Same as request ID
+	Result  any       `json:"result"`          // Result object (null if error)
+	Error   *errorObj `json:"error,omitempty"` // Error object (null if success)
+}
+
+// Server Information Types
+
+// serverInfo provides information about the server
+type serverInfo struct {
+	Name    string `json:"name"`    // Server name
+	Version string `json:"version"` // Server version
+}
+
+// capabilities describes the server's capabilities
+type capabilities struct {
+	Logging struct{} `json:"logging"`
+	Prompts struct {
+		ListChanged bool `json:"listChanged"` // Server will notify on prompt changes
+	} `json:"prompts"`
+	Resources struct {
+		Subscribe   bool `json:"subscribe"`   // Server supports resource subscriptions
+		ListChanged bool `json:"listChanged"` // Server will notify on resource changes
+	} `json:"resources"`
+	Tools struct {
+		ListChanged bool `json:"listChanged"` // Server will notify on tool changes
+	} `json:"tools"`
+}
+
+// initializationResponse is sent in response to an initialize request
+type initializationResponse struct {
+	ProtocolVersion string       `json:"protocolVersion"` // Protocol version
+	Capabilities    capabilities `json:"capabilities"`    // Server capabilities
+	ServerInfo      serverInfo   `json:"serverInfo"`      // Server information
+}
+
+// ToolCallParams contains the parameters for a tool call
+type ToolCallParams struct {
+	Name       string         `json:"name"`       // Tool name
+	Parameters map[string]any `json:"parameters"` // Tool parameters
+}
+
+// ToolResult contains the result of a tool execution
+type ToolResult struct {
+	Type    string `json:"type"`    // Content type (text, image, etc.)
+	Content any    `json:"content"` // Result content
+}
+
+// errorMessage represents a detailed error message
+type errorMessage struct {
+	Code    int    `json:"code"`       // Error code
+	Message string `json:"message"`    // Error message
+	Data    any    `json:",omitempty"` // Additional error data
+}

mcp/types_test.go

@@ -0,0 +1,271 @@
+package mcp
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestResponseMarshaling(t *testing.T) {
+	// Test that the Response struct marshals correctly
+	resp := Response{
+		JsonRpc: "2.0",
+		ID:      123,
+		Result: map[string]string{
+			"key": "value",
+		},
+	}
+
+	data, err := json.Marshal(resp)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"jsonrpc":"2.0"`)
+	assert.Contains(t, string(data), `"id":123`)
+	assert.Contains(t, string(data), `"result":{"key":"value"}`)
+
+	// Test response with error
+	respWithError := Response{
+		JsonRpc: "2.0",
+		ID:      456,
+		Error: &errorObj{
+			Code:    errCodeInvalidRequest,
+			Message: "Invalid Request",
+		},
+	}
+
+	data, err = json.Marshal(respWithError)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"jsonrpc":"2.0"`)
+	assert.Contains(t, string(data), `"id":456`)
+	assert.Contains(t, string(data), `"error":{"code":-32600,"message":"Invalid Request"}`)
+}
+
+func TestRequestUnmarshaling(t *testing.T) {
+	// Test that the Request struct unmarshals correctly
+	jsonStr := `{
+		"jsonrpc": "2.0",
+		"id": 789,
+		"method": "test_method",
+		"params": {"key": "value"}
+	}`
+
+	var req Request
+	err := json.Unmarshal([]byte(jsonStr), &req)
+
+	assert.NoError(t, err)
+	assert.Equal(t, "2.0", req.JsonRpc)
+	assert.Equal(t, float64(789), req.ID)
+	assert.Equal(t, "test_method", req.Method)
+
+	// Check params unmarshaled correctly
+	var params map[string]string
+	err = json.Unmarshal(req.Params, &params)
+	assert.NoError(t, err)
+	assert.Equal(t, "value", params["key"])
+}
+
+func TestToolStructs(t *testing.T) {
+	// Test Tool struct
+	tool := Tool{
+		Name:        "test.tool",
+		Description: "A test tool",
+		InputSchema: InputSchema{
+			Type: "object",
+			Properties: map[string]any{
+				"input": map[string]any{
+					"type":        "string",
+					"description": "Input parameter",
+				},
+			},
+			Required: []string{"input"},
+		},
+		Handler: func(ctx context.Context, params map[string]any) (any, error) {
+			return "result", nil
+		},
+	}
+
+	// Verify fields are correct
+	assert.Equal(t, "test.tool", tool.Name)
+	assert.Equal(t, "A test tool", tool.Description)
+	assert.Equal(t, "object", tool.InputSchema.Type)
+	assert.Contains(t, tool.InputSchema.Properties, "input")
+	propMap, ok := tool.InputSchema.Properties["input"].(map[string]any)
+	assert.True(t, ok, "Property should be a map")
+	assert.Equal(t, "string", propMap["type"])
+	assert.NotNil(t, tool.Handler)
+
+	// Verify JSON marshalling (which should exclude Handler function)
+	data, err := json.Marshal(tool)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"name":"test.tool"`)
+	assert.Contains(t, string(data), `"description":"A test tool"`)
+	assert.Contains(t, string(data), `"inputSchema":`)
+	assert.NotContains(t, string(data), `"Handler":`)
+}
+
+func TestPromptStructs(t *testing.T) {
+	// Test Prompt struct
+	prompt := Prompt{
+		Name:        "test.prompt",
+		Description: "A test prompt description",
+	}
+
+	// Verify fields are correct
+	assert.Equal(t, "test.prompt", prompt.Name)
+	assert.Equal(t, "A test prompt description", prompt.Description)
+
+	// Verify JSON marshalling
+	data, err := json.Marshal(prompt)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"name":"test.prompt"`)
+	assert.Contains(t, string(data), `"description":"A test prompt description"`)
+}
+
+func TestResourceStructs(t *testing.T) {
+	// Test Resource struct
+	resource := Resource{
+		Name:        "test.resource",
+		URI:         "http://example.com/resource",
+		Description: "A test resource",
+	}
+
+	// Verify fields are correct
+	assert.Equal(t, "test.resource", resource.Name)
+	assert.Equal(t, "http://example.com/resource", resource.URI)
+	assert.Equal(t, "A test resource", resource.Description)
+
+	// Verify JSON marshalling
+	data, err := json.Marshal(resource)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"name":"test.resource"`)
+	assert.Contains(t, string(data), `"uri":"http://example.com/resource"`)
+	assert.Contains(t, string(data), `"description":"A test resource"`)
+}
+
+func TestContentTypes(t *testing.T) {
+	// Test TextContent
+	textContent := TextContent{
+		Text: "Sample text",
+		Annotations: &Annotations{
+			Audience: []RoleType{RoleUser, RoleAssistant},
+			Priority: ptr(1.0),
+		},
+	}
+
+	data, err := json.Marshal(textContent)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"text":"Sample text"`)
+	assert.Contains(t, string(data), `"audience":["user","assistant"]`)
+	assert.Contains(t, string(data), `"priority":1`)
+
+	// Test ImageContent
+	imageContent := ImageContent{
+		Data:     "base64data",
+		MimeType: "image/png",
+	}
+
+	data, err = json.Marshal(imageContent)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"data":"base64data"`)
+	assert.Contains(t, string(data), `"mimeType":"image/png"`)
+
+	// Test AudioContent
+	audioContent := AudioContent{
+		Data:     "base64audio",
+		MimeType: "audio/mp3",
+	}
+
+	data, err = json.Marshal(audioContent)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"data":"base64audio"`)
+	assert.Contains(t, string(data), `"mimeType":"audio/mp3"`)
+}
+
+func TestCallToolResult(t *testing.T) {
+	// Test CallToolResult
+	result := CallToolResult{
+		Result: Result{
+			Meta: map[string]any{
+				"progressToken": "token123",
+			},
+		},
+		Content: []interface{}{
+			TextContent{
+				Text: "Sample result",
+			},
+		},
+		IsError: false,
+	}
+
+	data, err := json.Marshal(result)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"_meta":{"progressToken":"token123"}`)
+	assert.Contains(t, string(data), `"content":[{"text":"Sample result"}]`)
+	assert.NotContains(t, string(data), `"isError":`)
+}
+
+func TestRequest_isNotification(t *testing.T) {
+	tests := []struct {
+		name    string
+		id      any
+		want    bool
+		wantErr error
+	}{
+		// integer test cases
+		{name: "int zero", id: 0, want: true, wantErr: nil},
+		{name: "int non-zero", id: 1, want: false, wantErr: nil},
+		{name: "int64 zero", id: int64(0), want: true, wantErr: nil},
+		{name: "int64 max", id: int64(9223372036854775807), want: false, wantErr: nil},
+
+		// floating point number test cases
+		{name: "float64 zero", id: float64(0.0), want: true, wantErr: nil},
+		{name: "float64 positive", id: float64(0.000001), want: false, wantErr: nil},
+		{name: "float64 negative", id: float64(-0.000001), want: false, wantErr: nil},
+		{name: "float64 epsilon", id: float64(1e-300), want: false, wantErr: nil},
+
+		// string test cases
+		{name: "empty string", id: "", want: true, wantErr: nil},
+		{name: "non-empty string", id: "abc", want: false, wantErr: nil},
+		{name: "space string", id: " ", want: false, wantErr: nil},
+		{name: "unicode string", id: "こんにちは", want: false, wantErr: nil},
+
+		// special cases
+		{name: "nil", id: nil, want: true, wantErr: nil},
+
+		// logical type test cases
+		{name: "bool true", id: true, want: false, wantErr: errors.New("invalid type bool")},
+		{name: "bool false", id: false, want: false, wantErr: errors.New("invalid type bool")},
+		{name: "struct type", id: struct{}{}, want: false, wantErr: errors.New("invalid type struct {}")},
+		{name: "slice type", id: []int{1, 2, 3}, want: false, wantErr: errors.New("invalid type []int")},
+		{name: "map type", id: map[string]int{"a": 1}, want: false, wantErr: errors.New("invalid type map[string]int")},
+		{name: "pointer type", id: new(int), want: false, wantErr: errors.New("invalid type *int")},
+		{name: "func type", id: func() {}, want: false, wantErr: errors.New("invalid type func()")},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := Request{
+				SessionId: "test-session",
+				JsonRpc:   "2.0",
+				ID:        tt.id,
+				Method:    "testMethod",
+				Params:    json.RawMessage(`{}`),
+			}
+
+			got, err := req.isNotification()
+
+			if (err != nil) != (tt.wantErr != nil) {
+				t.Fatalf("error presence mismatch: got error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if err != nil && tt.wantErr != nil && err.Error() != tt.wantErr.Error() {
+				t.Fatalf("error message mismatch:\ngot  %q\nwant %q", err.Error(), tt.wantErr.Error())
+			}
+
+			if got != tt.want {
+				t.Errorf("isNotification() = %v, want %v for ID %v (%T)", got, tt.want, tt.id, tt.id)
+			}
+		})
+	}
+}

mcp/util.go

@@ -0,0 +1,107 @@
+package mcp
+
+import "fmt"
+
+// formatSSEMessage formats a Server-Sent Event message with proper CRLF line endings
+func formatSSEMessage(event string, data []byte) string {
+	return fmt.Sprintf("event: %s\r\ndata: %s\r\n\r\n", event, string(data))
+}
+
+// ptr is a helper function to get a pointer to a value
+func ptr[T any](v T) *T {
+	return &v
+}
+
+func toTypedContents(contents []any) []any {
+	typedContents := make([]any, len(contents))
+
+	for i, content := range contents {
+		switch v := content.(type) {
+		case TextContent:
+			typedContents[i] = typedTextContent{
+				Type:        ContentTypeText,
+				TextContent: v,
+			}
+		case ImageContent:
+			typedContents[i] = typedImageContent{
+				Type:         ContentTypeImage,
+				ImageContent: v,
+			}
+		case AudioContent:
+			typedContents[i] = typedAudioContent{
+				Type:         ContentTypeAudio,
+				AudioContent: v,
+			}
+		default:
+			typedContents[i] = typedTextContent{
+				Type: ContentTypeText,
+				TextContent: TextContent{
+					Text: fmt.Sprintf("Unknown content type: %T", v),
+				},
+			}
+		}
+	}
+
+	return typedContents
+}
+
+func toTypedPromptMessages(messages []PromptMessage) []PromptMessage {
+	typedMessages := make([]PromptMessage, len(messages))
+
+	for i, msg := range messages {
+		switch v := msg.Content.(type) {
+		case TextContent:
+			typedMessages[i] = PromptMessage{
+				Role: msg.Role,
+				Content: typedTextContent{
+					Type:        ContentTypeText,
+					TextContent: v,
+				},
+			}
+		case ImageContent:
+			typedMessages[i] = PromptMessage{
+				Role: msg.Role,
+				Content: typedImageContent{
+					Type:         ContentTypeImage,
+					ImageContent: v,
+				},
+			}
+		case AudioContent:
+			typedMessages[i] = PromptMessage{
+				Role: msg.Role,
+				Content: typedAudioContent{
+					Type:         ContentTypeAudio,
+					AudioContent: v,
+				},
+			}
+		default:
+			typedMessages[i] = PromptMessage{
+				Role: msg.Role,
+				Content: typedTextContent{
+					Type: ContentTypeText,
+					TextContent: TextContent{
+						Text: fmt.Sprintf("Unknown content type: %T", v),
+					},
+				},
+			}
+		}
+	}
+
+	return typedMessages
+}
+
+// validatePromptArguments checks if all required arguments are provided
+// Returns a list of missing required arguments
+func validatePromptArguments(prompt Prompt, providedArgs map[string]string) []string {
+	var missingArgs []string
+
+	for _, arg := range prompt.Arguments {
+		if arg.Required {
+			if value, exists := providedArgs[arg.Name]; !exists || len(value) == 0 {
+				missingArgs = append(missingArgs, arg.Name)
+			}
+		}
+	}
+
+	return missingArgs
+}

mcp/util_test.go

@@ -0,0 +1,274 @@
+package mcp
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+type Event struct {
+	Type string
+	Data map[string]any
+}
+
+func parseEvent(input string) (*Event, error) {
+	var evt Event
+	var dataStr string
+
+	scanner := bufio.NewScanner(strings.NewReader(input))
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "event:") {
+			evt.Type = strings.TrimSpace(strings.TrimPrefix(line, "event:"))
+		} else if strings.HasPrefix(line, "data:") {
+			dataStr = strings.TrimSpace(strings.TrimPrefix(line, "data:"))
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	if len(dataStr) > 0 {
+		if err := json.Unmarshal([]byte(dataStr), &evt.Data); err != nil {
+			return nil, fmt.Errorf("failed to parse data: %w", err)
+		}
+	}
+
+	return &evt, nil
+}
+
+// TestToTypedPromptMessages tests the toTypedPromptMessages function
+func TestToTypedPromptMessages(t *testing.T) {
+	// Test with multiple message types in one test
+	t.Run("MixedContentTypes", func(t *testing.T) {
+		// Create test data with different content types
+		messages := []PromptMessage{
+			{
+				Role: RoleUser,
+				Content: TextContent{
+					Text: "Hello, this is a text message",
+					Annotations: &Annotations{
+						Audience: []RoleType{RoleUser, RoleAssistant},
+						Priority: ptr(0.8),
+					},
+				},
+			},
+			{
+				Role: RoleAssistant,
+				Content: ImageContent{
+					Data:     "base64ImageData",
+					MimeType: "image/jpeg",
+				},
+			},
+			{
+				Role: RoleUser,
+				Content: AudioContent{
+					Data:     "base64AudioData",
+					MimeType: "audio/mp3",
+				},
+			},
+			{
+				Role:    "system",
+				Content: "This is a simple string that should be handled as unknown type",
+			},
+		}
+
+		// Call the function
+		result := toTypedPromptMessages(messages)
+
+		// Validate results
+		require.Len(t, result, 4, "Should return the same number of messages")
+
+		// Validate first message (TextContent)
+		msg := result[0]
+		assert.Equal(t, RoleUser, msg.Role, "Role should be preserved")
+
+		// Type assertion using reflection since Content is an interface
+		typed, ok := msg.Content.(typedTextContent)
+		require.True(t, ok, "Should be typedTextContent")
+		assert.Equal(t, ContentTypeText, typed.Type, "Type should be text")
+		assert.Equal(t, "Hello, this is a text message", typed.Text, "Text content should be preserved")
+		require.NotNil(t, typed.Annotations, "Annotations should be preserved")
+		assert.Equal(t, []RoleType{RoleUser, RoleAssistant}, typed.Annotations.Audience, "Audience should be preserved")
+		require.NotNil(t, typed.Annotations.Priority, "Priority should be preserved")
+		assert.Equal(t, 0.8, *typed.Annotations.Priority, "Priority value should be preserved")
+
+		// Validate second message (ImageContent)
+		msg = result[1]
+		assert.Equal(t, RoleAssistant, msg.Role, "Role should be preserved")
+
+		// Type assertion for image content
+		typedImg, ok := msg.Content.(typedImageContent)
+		require.True(t, ok, "Should be typedImageContent")
+		assert.Equal(t, ContentTypeImage, typedImg.Type, "Type should be image")
+		assert.Equal(t, "base64ImageData", typedImg.Data, "Image data should be preserved")
+		assert.Equal(t, "image/jpeg", typedImg.MimeType, "MimeType should be preserved")
+
+		// Validate third message (AudioContent)
+		msg = result[2]
+		assert.Equal(t, RoleUser, msg.Role, "Role should be preserved")
+
+		// Type assertion for audio content
+		typedAudio, ok := msg.Content.(typedAudioContent)
+		require.True(t, ok, "Should be typedAudioContent")
+		assert.Equal(t, ContentTypeAudio, typedAudio.Type, "Type should be audio")
+		assert.Equal(t, "base64AudioData", typedAudio.Data, "Audio data should be preserved")
+		assert.Equal(t, "audio/mp3", typedAudio.MimeType, "MimeType should be preserved")
+
+		// Validate fourth message (unknown type converted to TextContent)
+		msg = result[3]
+		assert.Equal(t, RoleType("system"), msg.Role, "Role should be preserved")
+
+		// Should be converted to a typedTextContent with error message
+		typedUnknown, ok := msg.Content.(typedTextContent)
+		require.True(t, ok, "Unknown content should be converted to typedTextContent")
+		assert.Equal(t, ContentTypeText, typedUnknown.Type, "Type should be text")
+		assert.Contains(t, typedUnknown.Text, "Unknown content type:", "Should contain error about unknown type")
+		assert.Contains(t, typedUnknown.Text, "string", "Should mention the actual type")
+	})
+
+	// Test empty input
+	t.Run("EmptyInput", func(t *testing.T) {
+		messages := []PromptMessage{}
+		result := toTypedPromptMessages(messages)
+		assert.Empty(t, result, "Should return empty slice for empty input")
+	})
+
+	// Test with nil annotations
+	t.Run("NilAnnotations", func(t *testing.T) {
+		messages := []PromptMessage{
+			{
+				Role: RoleUser,
+				Content: TextContent{
+					Text:        "Text with nil annotations",
+					Annotations: nil,
+				},
+			},
+		}
+
+		result := toTypedPromptMessages(messages)
+		require.Len(t, result, 1, "Should return one message")
+
+		typed, ok := result[0].Content.(typedTextContent)
+		require.True(t, ok, "Should be typedTextContent")
+		assert.Equal(t, ContentTypeText, typed.Type, "Type should be text")
+		assert.Equal(t, "Text with nil annotations", typed.Text, "Text content should be preserved")
+		assert.Nil(t, typed.Annotations, "Nil annotations should be preserved as nil")
+	})
+}
+
+// TestToTypedContents tests the toTypedContents function
+func TestToTypedContents(t *testing.T) {
+	// Test with multiple content types in one test
+	t.Run("MixedContentTypes", func(t *testing.T) {
+		// Create test data with different content types
+		contents := []any{
+			TextContent{
+				Text: "Hello, this is a text content",
+				Annotations: &Annotations{
+					Audience: []RoleType{RoleUser, RoleAssistant},
+					Priority: ptr(0.7),
+				},
+			},
+			ImageContent{
+				Data:     "base64ImageData",
+				MimeType: "image/png",
+			},
+			AudioContent{
+				Data:     "base64AudioData",
+				MimeType: "audio/wav",
+			},
+			"This is a simple string that should be handled as unknown type",
+		}
+
+		// Call the function
+		result := toTypedContents(contents)
+
+		// Validate results
+		require.Len(t, result, 4, "Should return the same number of contents")
+
+		// Validate first content (TextContent)
+		typed, ok := result[0].(typedTextContent)
+		require.True(t, ok, "Should be typedTextContent")
+		assert.Equal(t, ContentTypeText, typed.Type, "Type should be text")
+		assert.Equal(t, "Hello, this is a text content", typed.Text, "Text content should be preserved")
+		require.NotNil(t, typed.Annotations, "Annotations should be preserved")
+		assert.Equal(t, []RoleType{RoleUser, RoleAssistant}, typed.Annotations.Audience, "Audience should be preserved")
+		require.NotNil(t, typed.Annotations.Priority, "Priority should be preserved")
+		assert.Equal(t, 0.7, *typed.Annotations.Priority, "Priority value should be preserved")
+
+		// Validate second content (ImageContent)
+		typedImg, ok := result[1].(typedImageContent)
+		require.True(t, ok, "Should be typedImageContent")
+		assert.Equal(t, ContentTypeImage, typedImg.Type, "Type should be image")
+		assert.Equal(t, "base64ImageData", typedImg.Data, "Image data should be preserved")
+		assert.Equal(t, "image/png", typedImg.MimeType, "MimeType should be preserved")
+
+		// Validate third content (AudioContent)
+		typedAudio, ok := result[2].(typedAudioContent)
+		require.True(t, ok, "Should be typedAudioContent")
+		assert.Equal(t, ContentTypeAudio, typedAudio.Type, "Type should be audio")
+		assert.Equal(t, "base64AudioData", typedAudio.Data, "Audio data should be preserved")
+		assert.Equal(t, "audio/wav", typedAudio.MimeType, "MimeType should be preserved")
+
+		// Validate fourth content (unknown type converted to TextContent)
+		typedUnknown, ok := result[3].(typedTextContent)
+		require.True(t, ok, "Unknown content should be converted to typedTextContent")
+		assert.Equal(t, ContentTypeText, typedUnknown.Type, "Type should be text")
+		assert.Contains(t, typedUnknown.Text, "Unknown content type:", "Should contain error about unknown type")
+		assert.Contains(t, typedUnknown.Text, "string", "Should mention the actual type")
+	})
+
+	// Test empty input
+	t.Run("EmptyInput", func(t *testing.T) {
+		contents := []any{}
+		result := toTypedContents(contents)
+		assert.Empty(t, result, "Should return empty slice for empty input")
+	})
+
+	// Test with nil annotations
+	t.Run("NilAnnotations", func(t *testing.T) {
+		contents := []any{
+			TextContent{
+				Text:        "Text with nil annotations",
+				Annotations: nil,
+			},
+		}
+
+		result := toTypedContents(contents)
+		require.Len(t, result, 1, "Should return one content")
+
+		typed, ok := result[0].(typedTextContent)
+		require.True(t, ok, "Should be typedTextContent")
+		assert.Equal(t, ContentTypeText, typed.Type, "Type should be text")
+		assert.Equal(t, "Text with nil annotations", typed.Text, "Text content should be preserved")
+		assert.Nil(t, typed.Annotations, "Nil annotations should be preserved as nil")
+	})
+
+	// Test with custom struct (should be handled as unknown type)
+	t.Run("CustomStruct", func(t *testing.T) {
+		type CustomContent struct {
+			Data string
+		}
+
+		contents := []any{
+			CustomContent{
+				Data: "custom data",
+			},
+		}
+
+		result := toTypedContents(contents)
+		require.Len(t, result, 1, "Should return one content")
+
+		typed, ok := result[0].(typedTextContent)
+		require.True(t, ok, "Custom struct should be converted to typedTextContent")
+		assert.Equal(t, ContentTypeText, typed.Type, "Type should be text")
+		assert.Contains(t, typed.Text, "Unknown content type:", "Should contain error about unknown type")
+		assert.Contains(t, typed.Text, "CustomContent", "Should mention the actual type")
+	})
+}

mcp/vars.go

@@ -0,0 +1,149 @@
+package mcp
+
+import (
+	"time"
+
+	"github.com/zeromicro/go-zero/core/syncx"
+)
+
+// Protocol constants
+const (
+	// JSON-RPC version as defined in the specification
+	jsonRpcVersion = "2.0"
+
+	// Session identifier key used in request URLs
+	sessionIdKey = "session_id"
+
+	// progressTokenKey is used to track progress of long-running tasks
+	progressTokenKey = "progressToken"
+)
+
+// Server-Sent Events (SSE) event types
+const (
+	// Standard message event for JSON-RPC responses
+	eventMessage = "message"
+
+	// Endpoint event for sending endpoint URL to clients
+	eventEndpoint = "endpoint"
+)
+
+// Content type identifiers
+const (
+	// ContentTypeObject is object content type
+	ContentTypeObject = "object"
+
+	// ContentTypeText is text content type
+	ContentTypeText = "text"
+
+	// ContentTypeImage is image content type
+	ContentTypeImage = "image"
+
+	// ContentTypeAudio is audio content type
+	ContentTypeAudio = "audio"
+
+	// ContentTypeResource is resource content type
+	ContentTypeResource = "resource"
+)
+
+// Collection keys for broadcast events
+const (
+	// Key for prompts collection
+	keyPrompts = "prompts"
+
+	// Key for resources collection
+	keyResources = "resources"
+
+	// Key for tools collection
+	keyTools = "tools"
+)
+
+// JSON-RPC error codes
+// Standard error codes from JSON-RPC 2.0 spec
+const (
+	// Invalid JSON was received by the server
+	errCodeInvalidRequest = -32600
+
+	// The method does not exist / is not available
+	errCodeMethodNotFound = -32601
+
+	// Invalid method parameter(s)
+	errCodeInvalidParams = -32602
+
+	// Internal JSON-RPC error
+	errCodeInternalError = -32603
+
+	// Tool execution timed out
+	errCodeTimeout = -32001
+
+	// Resource not found error
+	errCodeResourceNotFound = -32002
+
+	// Client hasn't completed initialization
+	errCodeClientNotInitialized = -32800
+)
+
+// User and assistant role definitions
+const (
+	// RoleUser is the "user" role - the entity asking questions
+	RoleUser RoleType = "user"
+
+	// RoleAssistant is the "assistant" role - the entity providing responses
+	RoleAssistant RoleType = "assistant"
+)
+
+// Method names as defined in the MCP specification
+const (
+	// Initialize the connection between client and server
+	methodInitialize = "initialize"
+
+	// List available tools
+	methodToolsList = "tools/list"
+
+	// Call a specific tool
+	methodToolsCall = "tools/call"
+
+	// List available prompts
+	methodPromptsList = "prompts/list"
+
+	// Get a specific prompt
+	methodPromptsGet = "prompts/get"
+
+	// List available resources
+	methodResourcesList = "resources/list"
+
+	// Read a specific resource
+	methodResourcesRead = "resources/read"
+
+	// Subscribe to resource updates
+	methodResourcesSubscribe = "resources/subscribe"
+
+	// Simple ping to check server availability
+	methodPing = "ping"
+
+	// Notification that client is fully initialized
+	methodNotificationsInitialized = "notifications/initialized"
+
+	// Notification that a request was canceled
+	methodNotificationsCancelled = "notifications/cancelled"
+)
+
+// Event names for Server-Sent Events (SSE)
+const (
+	// Notification of tool list changes
+	eventToolsListChanged = "tools/list_changed"
+
+	// Notification of prompt list changes
+	eventPromptsListChanged = "prompts/list_changed"
+
+	// Notification of resource list changes
+	eventResourcesListChanged = "resources/list_changed"
+)
+
+var (
+	// Default channel size for events
+	eventChanSize = 10
+
+	// Default ping interval for checking connection availability
+	// use syncx.ForAtomicDuration to ensure atomicity in test race
+	pingInterval = syncx.ForAtomicDuration(30 * time.Second)
+)

mcp/vars_test.go

@@ -0,0 +1,210 @@
+// filepath: /Users/kevin/Develop/go/opensource/go-zero/mcp/vars_test.go
+package mcp
+
+import (
+	"encoding/json"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestErrorCodes ensures error codes are applied correctly in error responses
+func TestErrorCodes(t *testing.T) {
+	testCases := []struct {
+		name     string
+		code     int
+		message  string
+		expected string
+	}{
+		{
+			name:     "invalid request error",
+			code:     errCodeInvalidRequest,
+			message:  "Invalid request",
+			expected: `"code":-32600`,
+		},
+		{
+			name:     "method not found error",
+			code:     errCodeMethodNotFound,
+			message:  "Method not found",
+			expected: `"code":-32601`,
+		},
+		{
+			name:     "invalid params error",
+			code:     errCodeInvalidParams,
+			message:  "Invalid parameters",
+			expected: `"code":-32602`,
+		},
+		{
+			name:     "internal error",
+			code:     errCodeInternalError,
+			message:  "Internal server error",
+			expected: `"code":-32603`,
+		},
+		{
+			name:     "timeout error",
+			code:     errCodeTimeout,
+			message:  "Operation timed out",
+			expected: `"code":-32001`,
+		},
+		{
+			name:     "resource not found error",
+			code:     errCodeResourceNotFound,
+			message:  "Resource not found",
+			expected: `"code":-32002`,
+		},
+		{
+			name:     "client not initialized error",
+			code:     errCodeClientNotInitialized,
+			message:  "Client not initialized",
+			expected: `"code":-32800`,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			resp := Response{
+				JsonRpc: jsonRpcVersion,
+				ID:      int64(1),
+				Error: &errorObj{
+					Code:    tc.code,
+					Message: tc.message,
+				},
+			}
+			data, err := json.Marshal(resp)
+			assert.NoError(t, err)
+			assert.Contains(t, string(data), tc.expected, "Error code should match expected value")
+			assert.Contains(t, string(data), tc.message, "Error message should be included")
+			assert.Contains(t, string(data), jsonRpcVersion, "JSON-RPC version should be included")
+		})
+	}
+}
+
+// TestJsonRpcVersion ensures the correct JSON-RPC version is used
+func TestJsonRpcVersion(t *testing.T) {
+	assert.Equal(t, "2.0", jsonRpcVersion, "JSON-RPC version should be 2.0")
+
+	// Test that it's used in responses
+	resp := Response{
+		JsonRpc: jsonRpcVersion,
+		ID:      int64(1),
+		Result:  "test",
+	}
+	data, err := json.Marshal(resp)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"jsonrpc":"2.0"`, "Response should use correct JSON-RPC version")
+
+	// Test that it's expected in requests
+	reqStr := `{"jsonrpc":"2.0","id":1,"method":"test"}`
+	var req Request
+	err = json.Unmarshal([]byte(reqStr), &req)
+	assert.NoError(t, err)
+	assert.Equal(t, jsonRpcVersion, req.JsonRpc, "Request should parse correct JSON-RPC version")
+}
+
+// TestSessionIdKey ensures session ID extraction works correctly
+func TestSessionIdKey(t *testing.T) {
+	// Create a mock server implementation
+	mock := newMockMcpServer(t)
+	defer mock.shutdown()
+
+	// Verify the key constant
+	assert.Equal(t, "session_id", sessionIdKey, "Session ID key should be 'session_id'")
+
+	// Test that session ID is extracted correctly
+	mockR := httptest.NewRequest("GET", "/?"+sessionIdKey+"=test-session", nil)
+
+	// Since the mock server is using the same session key logic,
+	// we can test this by accessing the request query parameters directly
+	sessionID := mockR.URL.Query().Get(sessionIdKey)
+	assert.Equal(t, "test-session", sessionID, "Session ID should be extracted correctly")
+}
+
+// TestEventTypes ensures event types are set correctly in SSE responses
+func TestEventTypes(t *testing.T) {
+	// Test message event
+	assert.Equal(t, "message", eventMessage, "Message event should be 'message'")
+
+	// Test endpoint event
+	assert.Equal(t, "endpoint", eventEndpoint, "Endpoint event should be 'endpoint'")
+
+	// Verify them in an actual SSE format string
+	messageEvent := "event: " + eventMessage + "\ndata: test\n\n"
+	assert.Contains(t, messageEvent, "event: message", "Message event should format correctly")
+
+	endpointEvent := "event: " + eventEndpoint + "\ndata: test\n\n"
+	assert.Contains(t, endpointEvent, "event: endpoint", "Endpoint event should format correctly")
+}
+
+// TestCollectionKeys checks that collection keys are used correctly
+func TestCollectionKeys(t *testing.T) {
+	// Verify collection key constants
+	assert.Equal(t, "prompts", keyPrompts, "Prompts key should be 'prompts'")
+	assert.Equal(t, "resources", keyResources, "Resources key should be 'resources'")
+	assert.Equal(t, "tools", keyTools, "Tools key should be 'tools'")
+}
+
+// TestRoleTypes checks that role types are used correctly
+func TestRoleTypes(t *testing.T) {
+	// Test in annotations
+	annotations := Annotations{
+		Audience: []RoleType{RoleUser, RoleAssistant},
+	}
+	data, err := json.Marshal(annotations)
+	assert.NoError(t, err)
+	assert.Contains(t, string(data), `"audience":["user","assistant"]`, "Role types should marshal correctly")
+}
+
+// TestMethodNames checks that method names are used correctly
+func TestMethodNames(t *testing.T) {
+	// Verify method name constants
+	methods := map[string]string{
+		"initialize":                methodInitialize,
+		"tools/list":                methodToolsList,
+		"tools/call":                methodToolsCall,
+		"prompts/list":              methodPromptsList,
+		"prompts/get":               methodPromptsGet,
+		"resources/list":            methodResourcesList,
+		"resources/read":            methodResourcesRead,
+		"resources/subscribe":       methodResourcesSubscribe,
+		"ping":                      methodPing,
+		"notifications/initialized": methodNotificationsInitialized,
+		"notifications/cancelled":   methodNotificationsCancelled,
+	}
+
+	for expected, actual := range methods {
+		assert.Equal(t, expected, actual, "Method name should be "+expected)
+	}
+
+	// Test in a request
+	for methodName := range methods {
+		req := Request{
+			JsonRpc: jsonRpcVersion,
+			ID:      int64(1),
+			Method:  methodName,
+		}
+		data, err := json.Marshal(req)
+		assert.NoError(t, err)
+		assert.Contains(t, string(data), `"method":"`+methodName+`"`, "Method name should be used in requests")
+	}
+}
+
+// TestEventNames checks that event names are used correctly
+func TestEventNames(t *testing.T) {
+	// Verify event name constants
+	events := map[string]string{
+		"tools/list_changed":     eventToolsListChanged,
+		"prompts/list_changed":   eventPromptsListChanged,
+		"resources/list_changed": eventResourcesListChanged,
+	}
+
+	for expected, actual := range events {
+		assert.Equal(t, expected, actual, "Event name should be "+expected)
+	}
+
+	// Test event names in SSE format
+	for _, eventName := range events {
+		sseEvent := "event: " + eventName + "\ndata: test\n\n"
+		assert.Contains(t, sseEvent, "event: "+eventName, "Event name should format correctly in SSE")
+	}
+}

readme-cn.md

@@ -6,7 +6,6 @@
 
 [English](readme.md) | 简体中文
 
-[![Go](https://github.com/zeromicro/go-zero/workflows/Go/badge.svg?branch=master)](https://github.com/zeromicro/go-zero/actions)
 [![Go Report Card](https://goreportcard.com/badge/github.com/zeromicro/go-zero)](https://goreportcard.com/report/github.com/zeromicro/go-zero)
 [![goproxy](https://goproxy.cn/stats/github.com/zeromicro/go-zero/badges/download-count.svg)](https://goproxy.cn/stats/github.com/zeromicro/go-zero/badges/download-count.svg)
 [![codecov](https://codecov.io/gh/zeromicro/go-zero/branch/master/graph/badge.svg)](https://codecov.io/gh/zeromicro/go-zero)
@@ -302,6 +301,9 @@ go-zero 已被许多公司用于生产部署，接入场景如在线教育、电
 >103. 爱芯元智半导体股份有限公司
 >104. 杭州升恒科技有限公司
 >105. 昆仑万维科技股份有限公司
+>106. 无锡盛算信息技术有限公司
+>107. 深圳市聚货通信息科技有限公司
+>108. 浙江银盾云科技有限公司
 
 如果贵公司也已使用 go-zero，欢迎在 [登记地址](https://github.com/zeromicro/go-zero/issues/602) 登记，仅仅为了推广，不做其它用途。
 

readme.md

@@ -7,7 +7,6 @@ go-zero is a web and rpc framework with lots of builtin engineering practices. I
 
 <div align=center>
 
-[![Go](https://github.com/zeromicro/go-zero/workflows/Go/badge.svg?branch=master)](https://github.com/zeromicro/go-zero/actions)
 [![codecov](https://codecov.io/gh/zeromicro/go-zero/branch/master/graph/badge.svg)](https://codecov.io/gh/zeromicro/go-zero)
 [![Go Report Card](https://goreportcard.com/badge/github.com/zeromicro/go-zero)](https://goreportcard.com/report/github.com/zeromicro/go-zero)
 [![Release](https://img.shields.io/github/v/release/zeromicro/go-zero.svg?style=flat-square)](https://github.com/zeromicro/go-zero)
@@ -251,7 +250,3 @@ go-zero enlisted in the [CNCF Cloud Native Landscape](https://landscape.cncf.io/
 ## Give a Star! ⭐
 
 If you like this project or are using it to learn or start your own solution, give it a star to get updates on new releases. Your support matters!
-
-## Buy me a coffee
-
-<a href="https://www.buymeacoffee.com/kevwan" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 60px !important;width: 217px !important;" ></a>

rest/engine.go

@@ -15,6 +15,7 @@ import (
 	"github.com/zeromicro/go-zero/rest/handler"
 	"github.com/zeromicro/go-zero/rest/httpx"
 	"github.com/zeromicro/go-zero/rest/internal"
+	"github.com/zeromicro/go-zero/rest/internal/header"
 	"github.com/zeromicro/go-zero/rest/internal/response"
 )
 
@@ -27,7 +28,10 @@ var ErrSignatureConfig = errors.New("bad config for Signature")
 type engine struct {
 	conf   RestConf
 	routes []featuredRoutes
-	// timeout is the max timeout of all routes
+	// timeout is the max timeout of all routes,
+	// and is used to set http.Server.ReadTimeout and http.Server.WriteTimeout.
+	// this network timeout is used to avoid DoS attacks by sending data slowly
+	// or receiving data slowly with many connections to exhaust server resources.
 	timeout              time.Duration
 	unauthorizedCallback handler.UnauthorizedCallback
 	unsignedCallback     handler.UnsignedCallback
@@ -54,13 +58,26 @@ func newEngine(c RestConf) *engine {
 }
 
 func (ng *engine) addRoutes(r featuredRoutes) {
+	if r.sse {
+		r.routes = buildSSERoutes(r.routes)
+	}
 	ng.routes = append(ng.routes, r)
 
-	// need to guarantee the timeout is the max of all routes
+	ng.mightUpdateTimeout(r)
-	// otherwise impossible to set http.Server.ReadTimeout & WriteTimeout
+}
-	if r.timeout > ng.timeout {
+
-		ng.timeout = r.timeout
+func buildSSERoutes(routes []Route) []Route {
+	for i, route := range routes {
+		h := route.Handler
+		routes[i].Handler = func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set(header.ContentType, header.ContentTypeEventStream)
+			w.Header().Set(header.CacheControl, header.CacheControlNoCache)
+			w.Header().Set(header.Connection, header.ConnectionKeepAlive)
+			h(w, r)
 		}
+	}
+
+	return routes
 }
 
 func (ng *engine) appendAuthHandler(fr featuredRoutes, chn chain.Chain,
@@ -174,11 +191,12 @@ func (ng *engine) checkedMaxBytes(bytes int64) int64 {
 	return ng.conf.MaxBytes
 }
 
-func (ng *engine) checkedTimeout(timeout time.Duration) time.Duration {
+func (ng *engine) checkedTimeout(timeout *time.Duration) time.Duration {
-	if timeout > 0 {
+	if timeout != nil {
-		return timeout
+		return *timeout
 	}
 
+	// if timeout not set in featured routes, use global timeout
 	return time.Duration(ng.conf.Timeout) * time.Millisecond
 }
 
@@ -210,6 +228,32 @@ func (ng *engine) getShedder(priority bool) load.Shedder {
 	return ng.shedder
 }
 
+func (ng *engine) hasTimeout() bool {
+	return ng.conf.Middlewares.Timeout && ng.timeout > 0
+}
+
+// mightUpdateTimeout checks if the route timeout is greater than the current,
+// and updates the engine's timeout accordingly.
+func (ng *engine) mightUpdateTimeout(r featuredRoutes) {
+	// if global timeout is set to 0, it means no need to set read/write timeout
+	// if route timeout is nil, no need to update ng.timeout
+	if ng.timeout == 0 || r.timeout == nil {
+		return
+	}
+
+	// if route timeout is 0 (means no timeout), cannot set read/write timeout
+	if *r.timeout == 0 {
+		ng.timeout = 0
+		return
+	}
+
+	// need to guarantee the timeout is the max of all routes
+	// otherwise impossible to set http.Server.ReadTimeout & WriteTimeout
+	if *r.timeout > ng.timeout {
+		ng.timeout = *r.timeout
+	}
+}
+
 // notFoundHandler returns a middleware that handles 404 not found requests.
 func (ng *engine) notFoundHandler(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -311,7 +355,7 @@ func (ng *engine) start(router httpx.Router, opts ...StartOption) error {
 	}
 
 	// make sure user defined options overwrite default options
-	opts = append([]StartOption{ng.withTimeout()}, opts...)
+	opts = append([]StartOption{ng.withNetworkTimeout()}, opts...)
 
 	if len(ng.conf.CertFile) == 0 && len(ng.conf.KeyFile) == 0 {
 		return internal.StartHttp(ng.conf.Host, ng.conf.Port, router, opts...)
@@ -334,18 +378,19 @@ func (ng *engine) use(middleware Middleware) {
 	ng.middlewares = append(ng.middlewares, middleware)
 }
 
-func (ng *engine) withTimeout() internal.StartOption {
+func (ng *engine) withNetworkTimeout() internal.StartOption {
 	return func(svr *http.Server) {
-		timeout := ng.timeout
+		if !ng.hasTimeout() {
-		if timeout > 0 {
+			return
+		}
+
 		// factor 0.8, to avoid clients send longer content-length than the actual content,
 		// without this timeout setting, the server will time out and respond 503 Service Unavailable,
 		// which triggers the circuit breaker.
-			svr.ReadTimeout = 4 * timeout / 5
+		svr.ReadTimeout = 4 * ng.timeout / 5
 		// factor 1.1, to avoid servers don't have enough time to write responses.
 		// setting the factor less than 1.0 may lead clients not receiving the responses.
-			svr.WriteTimeout = 11 * timeout / 10
+		svr.WriteTimeout = 11 * ng.timeout / 10
-		}
 	}
 }
 

rest/engine_test.go

@@ -73,7 +73,17 @@ Verbose: true
 				Path:    "/",
 				Handler: func(w http.ResponseWriter, r *http.Request) {},
 			}},
-			timeout: time.Minute,
+			timeout: ptrOfDuration(time.Minute),
+		},
+		{
+			jwt:       jwtSetting{},
+			signature: signatureSetting{},
+			routes: []Route{{
+				Method:  http.MethodGet,
+				Path:    "/",
+				Handler: func(w http.ResponseWriter, r *http.Request) {},
+			}},
+			timeout: ptrOfDuration(0),
 		},
 		{
 			priority:  true,
@@ -84,7 +94,7 @@ Verbose: true
 				Path:    "/",
 				Handler: func(w http.ResponseWriter, r *http.Request) {},
 			}},
-			timeout: time.Second,
+			timeout: ptrOfDuration(time.Second),
 		},
 		{
 			priority: true,
@@ -227,8 +237,12 @@ Verbose: true
 				}))
 
 				timeout := time.Second * 3
-				if route.timeout > timeout {
+				if route.timeout != nil {
-					timeout = route.timeout
+					if *route.timeout == 0 {
+						timeout = 0
+					} else if *route.timeout > timeout {
+						timeout = *route.timeout
+					}
 				}
 				assert.Equal(t, timeout, ng.timeout)
 			})
@@ -236,10 +250,69 @@ Verbose: true
 	}
 }
 
+func TestNewEngine_unsignedCallback(t *testing.T) {
+	priKeyfile, err := fs.TempFilenameWithText(priKey)
+	assert.Nil(t, err)
+	defer os.Remove(priKeyfile)
+
+	yaml := `Name: foo
+Host: localhost
+Port: 0
+Middlewares:
+  Log: false
+`
+	route := featuredRoutes{
+		priority: true,
+		jwt: jwtSetting{
+			enabled: true,
+		},
+		signature: signatureSetting{
+			enabled: true,
+			SignatureConf: SignatureConf{
+				Strict: true,
+				PrivateKeys: []PrivateKeyConf{
+					{
+						Fingerprint: "a",
+						KeyFile:     priKeyfile,
+					},
+				},
+			},
+		},
+		routes: []Route{{
+			Method:  http.MethodGet,
+			Path:    "/",
+			Handler: func(w http.ResponseWriter, r *http.Request) {},
+		}},
+	}
+
+	var index int32
+	t.Run(fmt.Sprintf("%s-%v", yaml, route.routes), func(t *testing.T) {
+		var cnf RestConf
+		assert.Nil(t, conf.LoadFromYamlBytes([]byte(yaml), &cnf))
+		ng := newEngine(cnf)
+		if atomic.AddInt32(&index, 1)%2 == 0 {
+			ng.setUnsignedCallback(func(w http.ResponseWriter, r *http.Request,
+				next http.Handler, strict bool, code int) {
+			})
+		}
+		ng.addRoutes(route)
+		ng.use(func(next http.HandlerFunc) http.HandlerFunc {
+			return func(w http.ResponseWriter, r *http.Request) {
+				next.ServeHTTP(w, r)
+			}
+		})
+
+		assert.NotNil(t, ng.start(mockedRouter{}, func(svr *http.Server) {
+		}))
+
+		assert.Equal(t, time.Duration(time.Second*3), ng.timeout)
+	})
+}
+
 func TestEngine_checkedTimeout(t *testing.T) {
 	tests := []struct {
 		name    string
-		timeout time.Duration
+		timeout *time.Duration
 		expect  time.Duration
 	}{
 		{
@@ -248,17 +321,17 @@ func TestEngine_checkedTimeout(t *testing.T) {
 		},
 		{
 			name:    "less",
-			timeout: time.Millisecond * 500,
+			timeout: ptrOfDuration(time.Millisecond * 500),
 			expect:  time.Millisecond * 500,
 		},
 		{
 			name:    "equal",
-			timeout: time.Second,
+			timeout: ptrOfDuration(time.Second),
 			expect:  time.Second,
 		},
 		{
 			name:    "more",
-			timeout: time.Millisecond * 1500,
+			timeout: ptrOfDuration(time.Millisecond * 1500),
 			expect:  time.Millisecond * 1500,
 		},
 	}
@@ -394,9 +467,14 @@ func TestEngine_withTimeout(t *testing.T) {
 	for _, test := range tests {
 		test := test
 		t.Run(test.name, func(t *testing.T) {
-			ng := newEngine(RestConf{Timeout: test.timeout})
+			ng := newEngine(RestConf{
+				Timeout: test.timeout,
+				Middlewares: MiddlewaresConf{
+					Timeout: true,
+				},
+			})
 			svr := &http.Server{}
-			ng.withTimeout()(svr)
+			ng.withNetworkTimeout()(svr)
 
 			assert.Equal(t, time.Duration(test.timeout)*time.Millisecond*4/5, svr.ReadTimeout)
 			assert.Equal(t, time.Duration(0), svr.ReadHeaderTimeout)
@@ -406,6 +484,62 @@ func TestEngine_withTimeout(t *testing.T) {
 	}
 }
 
+func TestEngine_ReadWriteTimeout(t *testing.T) {
+	logx.Disable()
+
+	tests := []struct {
+		name       string
+		timeout    int64
+		middleware bool
+	}{
+		{
+			name:       "0/false",
+			timeout:    0,
+			middleware: false,
+		},
+		{
+			name:       "0/true",
+			timeout:    0,
+			middleware: true,
+		},
+		{
+			name:       "set/false",
+			timeout:    1000,
+			middleware: false,
+		},
+		{
+			name:       "both set",
+			timeout:    1000,
+			middleware: true,
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			ng := newEngine(RestConf{
+				Timeout: test.timeout,
+				Middlewares: MiddlewaresConf{
+					Timeout: test.middleware,
+				},
+			})
+			svr := &http.Server{}
+			ng.withNetworkTimeout()(svr)
+
+			assert.Equal(t, time.Duration(0), svr.ReadHeaderTimeout)
+			assert.Equal(t, time.Duration(0), svr.IdleTimeout)
+
+			if test.timeout > 0 && test.middleware {
+				assert.Equal(t, time.Duration(test.timeout)*time.Millisecond*4/5, svr.ReadTimeout)
+				assert.Equal(t, time.Duration(test.timeout)*time.Millisecond*11/10, svr.WriteTimeout)
+			} else {
+				assert.Equal(t, time.Duration(0), svr.ReadTimeout)
+				assert.Equal(t, time.Duration(0), svr.WriteTimeout)
+			}
+		})
+	}
+}
+
 func TestEngine_start(t *testing.T) {
 	logx.Disable()
 

rest/handler/timeouthandler.go

@@ -106,8 +106,8 @@ func (h *timeoutHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	case <-ctx.Done():
 		tw.mu.Lock()
 		defer tw.mu.Unlock()
-		// there isn't any user-defined middleware before TimoutHandler,
+		// there isn't any user-defined middleware before TimeoutHandler,
-		// so we can guarantee that cancelation in biz related code won't come here.
+		// so we can guarantee that cancellation in biz related code won't come here.
 		httpx.ErrorCtx(r.Context(), w, ctx.Err(), func(w http.ResponseWriter, err error) {
 			if errors.Is(err, context.Canceled) {
 				w.WriteHeader(statusClientClosedRequest)
@@ -151,7 +151,7 @@ func (tw *timeoutWriter) Flush() {
 	flusher.Flush()
 }
 
-// Header returns the underline temporary http.Header.
+// Header returns the underlying temporary http.Header.
 func (tw *timeoutWriter) Header() http.Header {
 	return tw.h
 }

rest/httpc/requests.go

@@ -105,7 +105,7 @@ func buildRequest(ctx context.Context, method, url string, data any) (*http.Requ
 	req.URL.RawQuery = buildFormQuery(u, val[formKey])
 	fillHeader(req, val[headerKey])
 	if hasJsonBody {
-		req.Header.Set(header.ContentType, header.JsonContentType)
+		req.Header.Set(header.ContentType, header.ContentTypeJson)
 	}
 
 	return req, nil

rest/httpc/requests_test.go

@@ -45,7 +45,7 @@ func TestDoRequest_NotFound(t *testing.T) {
 	defer svr.Close()
 	req, err := http.NewRequest(http.MethodPost, svr.URL, nil)
 	assert.Nil(t, err)
-	req.Header.Set(header.ContentType, header.JsonContentType)
+	req.Header.Set(header.ContentType, header.ContentTypeJson)
 	resp, err := DoRequest(req)
 	assert.Nil(t, err)
 	assert.Equal(t, http.StatusNotFound, resp.StatusCode)

rest/httpc/responses_test.go

@@ -18,7 +18,7 @@ func TestParse(t *testing.T) {
 	}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("foo", "bar")
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 		w.Write([]byte(`{"name":"kevin","value":100}`))
 	}))
 	defer svr.Close()
@@ -38,7 +38,7 @@ func TestParseHeaderError(t *testing.T) {
 	}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("foo", "bar")
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 	}))
 	defer svr.Close()
 	req, err := http.NewRequest(http.MethodGet, svr.URL, nil)
@@ -54,7 +54,7 @@ func TestParseNoBody(t *testing.T) {
 	}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("foo", "bar")
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 	}))
 	defer svr.Close()
 	req, err := http.NewRequest(http.MethodGet, svr.URL, nil)
@@ -72,7 +72,7 @@ func TestParseWithZeroValue(t *testing.T) {
 	}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("foo", "0")
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 		w.Write([]byte(`{"bar":0}`))
 	}))
 	defer svr.Close()
@@ -90,7 +90,7 @@ func TestParseWithNegativeContentLength(t *testing.T) {
 		Bar int `json:"bar"`
 	}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 		w.Write([]byte(`{"bar":0}`))
 	}))
 	defer svr.Close()
@@ -124,7 +124,7 @@ func TestParseWithNegativeContentLength(t *testing.T) {
 func TestParseWithNegativeContentLengthNoBody(t *testing.T) {
 	var val struct{}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 	}))
 	defer svr.Close()
 	req, err := http.NewRequest(http.MethodGet, svr.URL, nil)
@@ -156,7 +156,7 @@ func TestParseWithNegativeContentLengthNoBody(t *testing.T) {
 func TestParseJsonBody_BodyError(t *testing.T) {
 	var val struct{}
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set(header.ContentType, header.JsonContentType)
+		w.Header().Set(header.ContentType, header.ContentTypeJson)
 	}))
 	defer svr.Close()
 	req, err := http.NewRequest(http.MethodGet, svr.URL, nil)

rest/httpc/service_test.go

@@ -44,7 +44,7 @@ func TestNamedService_DoRequestPost(t *testing.T) {
 	service := NewService("foo")
 	req, err := http.NewRequest(http.MethodPost, svr.URL, nil)
 	assert.Nil(t, err)
-	req.Header.Set(header.ContentType, header.JsonContentType)
+	req.Header.Set(header.ContentType, header.ContentTypeJson)
 	resp, err := service.DoRequest(req)
 	assert.Nil(t, err)
 	assert.Equal(t, http.StatusNotFound, resp.StatusCode)

rest/httpx/requests_test.go

@@ -476,7 +476,7 @@ func TestParseJsonBody(t *testing.T) {
 
 		body := `{"name":"kevin", "age": 18}`
 		r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
-		r.Header.Set(ContentType, header.JsonContentType)
+		r.Header.Set(ContentType, header.ContentTypeJson)
 
 		if assert.NoError(t, Parse(r, &v)) {
 			assert.Equal(t, "kevin", v.Name)
@@ -492,7 +492,7 @@ func TestParseJsonBody(t *testing.T) {
 
 		body := `{"name":"kevin", "ag": 18}`
 		r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
-		r.Header.Set(ContentType, header.JsonContentType)
+		r.Header.Set(ContentType, header.ContentTypeJson)
 
 		assert.Error(t, Parse(r, &v))
 	})
@@ -517,7 +517,7 @@ func TestParseJsonBody(t *testing.T) {
 
 		body := `[{"name":"kevin", "age": 18}]`
 		r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
-		r.Header.Set(ContentType, header.JsonContentType)
+		r.Header.Set(ContentType, header.ContentTypeJson)
 
 		assert.NoError(t, Parse(r, &v))
 		assert.Equal(t, 1, len(v))
@@ -537,7 +537,7 @@ func TestParseJsonBody(t *testing.T) {
 
 		body := `[{"name":"apple", "age": 18}]`
 		r := httptest.NewRequest(http.MethodPost, "/a?product=tree", strings.NewReader(body))
-		r.Header.Set(ContentType, header.JsonContentType)
+		r.Header.Set(ContentType, header.ContentTypeJson)
 
 		assert.NoError(t, Parse(r, &v))
 		assert.Equal(t, 1, len(v))
@@ -555,7 +555,7 @@ func TestParseJsonBody(t *testing.T) {
 		body, _ := json.Marshal(v1)
 		t.Logf("body:%s", string(body))
 		r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(string(body)))
-		r.Header.Set(ContentType, header.JsonContentType)
+		r.Header.Set(ContentType, header.ContentTypeJson)
 		var v2 v
 		err := ParseJsonBody(r, &v2)
 		if assert.NoError(t, err) {
@@ -609,7 +609,7 @@ func TestParseHeaders(t *testing.T) {
 	request.Header.Add("addrs", "addr2")
 	request.Header.Add("X-Forwarded-For", "10.0.10.11")
 	request.Header.Add("x-real-ip", "10.0.11.10")
-	request.Header.Add("Accept", header.JsonContentType)
+	request.Header.Add("Accept", header.ContentTypeJson)
 	err = ParseHeaders(request, &v)
 	if err != nil {
 		t.Fatal(err)
@@ -619,7 +619,7 @@ func TestParseHeaders(t *testing.T) {
 	assert.Equal(t, []string{"addr1", "addr2"}, v.Addrs)
 	assert.Equal(t, "10.0.10.11", v.XForwardedFor)
 	assert.Equal(t, "10.0.11.10", v.XRealIP)
-	assert.Equal(t, header.JsonContentType, v.Accept)
+	assert.Equal(t, header.ContentTypeJson, v.Accept)
 }
 
 func TestParseHeaders_Error(t *testing.T) {
@@ -711,7 +711,7 @@ func TestParseWithFloatPtr(t *testing.T) {
 		}
 		body := `{"weightFloat32": 3.2}`
 		r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
-		r.Header.Set(ContentType, header.JsonContentType)
+		r.Header.Set(ContentType, header.ContentTypeJson)
 
 		if assert.NoError(t, Parse(r, &v)) {
 			assert.Equal(t, float32(3.2), *v.WeightFloat32)

rest/httpx/responses.go

@@ -179,7 +179,7 @@ func doWriteJson(w http.ResponseWriter, code int, v any) error {
 		return fmt.Errorf("marshal json failed, error: %w", err)
 	}
 
-	w.Header().Set(ContentType, header.JsonContentType)
+	w.Header().Set(ContentType, header.ContentTypeJson)
 	w.WriteHeader(code)
 
 	if n, err := w.Write(bs); err != nil {

rest/httpx/vars.go

@@ -10,7 +10,7 @@ const (
 	// ContentType means Content-Type.
 	ContentType = header.ContentType
 	// JsonContentType means application/json.
-	JsonContentType = header.JsonContentType
+	JsonContentType = header.ContentTypeJson
 	// KeyField means key.
 	KeyField = "key"
 	// SecretField means secret.

rest/internal/fileserver/filehandler.go

@@ -2,15 +2,16 @@ package fileserver
 
 import (
 	"net/http"
+	"path"
 	"strings"
 	"sync"
 )
 
 // Middleware returns a middleware that serves files from the given file system.
-func Middleware(path string, fs http.FileSystem) func(http.HandlerFunc) http.HandlerFunc {
+func Middleware(upath string, fs http.FileSystem) func(http.HandlerFunc) http.HandlerFunc {
 	fileServer := http.FileServer(fs)
-	pathWithoutTrailSlash := ensureNoTrailingSlash(path)
+	pathWithoutTrailSlash := ensureNoTrailingSlash(upath)
-	canServe := createServeChecker(path, fs)
+	canServe := createServeChecker(upath, fs)
 
 	return func(next http.HandlerFunc) http.HandlerFunc {
 		return func(w http.ResponseWriter, r *http.Request) {
@@ -28,9 +29,22 @@ func createFileChecker(fs http.FileSystem) func(string) bool {
 	var lock sync.RWMutex
 	fileChecker := make(map[string]bool)
 
-	return func(path string) bool {
+	return func(upath string) bool {
+		// Emulate http.Dir.Open’s path normalization for embed.FS.Open.
+		// http.FileServer redirects any request ending in "/index.html"
+		// to the same path without the final "index.html".
+		// So the path here may be empty or end with a "/".
+		// http.Dir.Open uses this logic to clean the path,
+		// correctly handling those two cases.
+		// embed.FS doesn’t perform this normalization, so we apply the same logic here.
+		upath = path.Clean("/" + upath)[1:]
+		if len(upath) == 0 {
+			// if the path is empty, we use "." to open the current directory
+			upath = "."
+		}
+
 		lock.RLock()
-		exist, ok := fileChecker[path]
+		exist, ok := fileChecker[upath]
 		lock.RUnlock()
 		if ok {
 			return exist
@@ -39,9 +53,9 @@ func createFileChecker(fs http.FileSystem) func(string) bool {
 		lock.Lock()
 		defer lock.Unlock()
 
-		file, err := fs.Open(path)
+		file, err := fs.Open(upath)
 		exist = err == nil
-		fileChecker[path] = exist
+		fileChecker[upath] = exist
 		if err != nil {
 			return false
 		}
@@ -51,8 +65,8 @@ func createFileChecker(fs http.FileSystem) func(string) bool {
 	}
 }
 
-func createServeChecker(path string, fs http.FileSystem) func(r *http.Request) bool {
+func createServeChecker(upath string, fs http.FileSystem) func(r *http.Request) bool {
-	pathWithTrailSlash := ensureTrailingSlash(path)
+	pathWithTrailSlash := ensureTrailingSlash(upath)
 	fileChecker := createFileChecker(fs)
 
 	return func(r *http.Request) bool {
@@ -62,18 +76,18 @@ func createServeChecker(path string, fs http.FileSystem) func(r *http.Request) b
 	}
 }
 
-func ensureTrailingSlash(path string) string {
+func ensureTrailingSlash(upath string) string {
-	if strings.HasSuffix(path, "/") {
+	if strings.HasSuffix(upath, "/") {
-		return path
+		return upath
 	}
 
-	return path + "/"
+	return upath + "/"
 }
 
-func ensureNoTrailingSlash(path string) string {
+func ensureNoTrailingSlash(upath string) string {
-	if strings.HasSuffix(path, "/") {
+	if strings.HasSuffix(upath, "/") {
-		return path[:len(path)-1]
+		return upath[:len(upath)-1]
 	}
 
-	return path
+	return upath
 }

rest/internal/fileserver/filehandler_test.go

@@ -1,6 +1,8 @@
 package fileserver
 
 import (
+	"embed"
+	"io/fs"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -61,6 +63,46 @@ func TestMiddleware(t *testing.T) {
 			requestPath:    "/ws",
 			expectedStatus: http.StatusAlreadyReported,
 		},
+
+		// http.FileServer redirects any request ending in "/index.html"
+		// to the same path, without the final "index.html".
+		{
+			name:           "Serve index.html",
+			path:           "/static",
+			dir:            "testdata",
+			requestPath:    "/static/index.html",
+			expectedStatus: http.StatusMovedPermanently,
+		},
+		{
+			name:           "Serve index.html with path with trailing slash",
+			path:           "/static/",
+			dir:            "testdata",
+			requestPath:    "/static/index.html",
+			expectedStatus: http.StatusMovedPermanently,
+		},
+		{
+			name:           "Serve index.html in a nested directory",
+			path:           "/static",
+			dir:            "testdata",
+			requestPath:    "/static/nested/index.html",
+			expectedStatus: http.StatusMovedPermanently,
+		},
+		{
+			name:            "Request index.html indirectly",
+			path:            "/static",
+			dir:             "testdata",
+			requestPath:     "/static/",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "hello",
+		},
+		{
+			name:            "Request index.html in a nested directory indirectly",
+			path:            "/static",
+			dir:             "testdata",
+			requestPath:     "/static/nested/",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "hello",
+		},
 	}
 
 	for _, tt := range tests {
@@ -87,6 +129,128 @@ func TestMiddleware(t *testing.T) {
 	}
 }
 
+var (
+	//go:embed testdata
+	testdataFS embed.FS
+)
+
+func TestMiddleware_embedFS(t *testing.T) {
+	tests := []struct {
+		name            string
+		path            string
+		requestPath     string
+		expectedStatus  int
+		expectedContent string
+	}{
+		{
+			name:            "Serve static file",
+			path:            "/static",
+			requestPath:     "/static/example.txt",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "1",
+		},
+		{
+			name:            "Path with trailing slash",
+			path:            "/static/",
+			requestPath:     "/static/example.txt",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "1",
+		},
+		{
+			name:            "Root path",
+			path:            "/",
+			requestPath:     "/example.txt",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "1",
+		},
+		{
+			name:           "Pass through non-matching path",
+			path:           "/static/",
+			requestPath:    "/other/path",
+			expectedStatus: http.StatusAlreadyReported,
+		},
+		{
+			name:           "Not exist file",
+			path:           "/assets",
+			requestPath:    "/assets/not-exist.txt",
+			expectedStatus: http.StatusAlreadyReported,
+		},
+		{
+			name:           "Not exist file in root",
+			path:           "/",
+			requestPath:    "/not-exist.txt",
+			expectedStatus: http.StatusAlreadyReported,
+		},
+		{
+			name:           "websocket request",
+			path:           "/",
+			requestPath:    "/ws",
+			expectedStatus: http.StatusAlreadyReported,
+		},
+
+		// http.FileServer redirects any request ending in "/index.html"
+		// to the same path, without the final "index.html".
+		{
+			name:           "Serve index.html",
+			path:           "/static",
+			requestPath:    "/static/index.html",
+			expectedStatus: http.StatusMovedPermanently,
+		},
+		{
+			name:           "Serve index.html with path with trailing slash",
+			path:           "/static/",
+			requestPath:    "/static/index.html",
+			expectedStatus: http.StatusMovedPermanently,
+		},
+		{
+			name:           "Serve index.html in a nested directory",
+			path:           "/static",
+			requestPath:    "/static/nested/index.html",
+			expectedStatus: http.StatusMovedPermanently,
+		},
+		{
+			name:            "Request index.html indirectly",
+			path:            "/static",
+			requestPath:     "/static/",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "hello",
+		},
+		{
+			name:            "Request index.html in a nested directory indirectly",
+			path:            "/static",
+			requestPath:     "/static/nested/",
+			expectedStatus:  http.StatusOK,
+			expectedContent: "hello",
+		},
+	}
+
+	subFS, err := fs.Sub(testdataFS, "testdata")
+	assert.Nil(t, err)
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			middleware := Middleware(tt.path, http.FS(subFS))
+			nextHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				w.WriteHeader(http.StatusAlreadyReported)
+			})
+
+			handlerToTest := middleware(nextHandler)
+
+			for i := 0; i < 2; i++ {
+				req := httptest.NewRequest(http.MethodGet, tt.requestPath, nil)
+				rr := httptest.NewRecorder()
+
+				handlerToTest.ServeHTTP(rr, req)
+
+				assert.Equal(t, tt.expectedStatus, rr.Code)
+				if len(tt.expectedContent) > 0 {
+					assert.Equal(t, tt.expectedContent, rr.Body.String())
+				}
+			}
+		})
+	}
+}
+
 func TestEnsureTrailingSlash(t *testing.T) {
 	tests := []struct {
 		input    string

rest/internal/fileserver/testdata/index.html

@@ -0,0 +1 @@
+hello

rest/internal/fileserver/testdata/nested/index.html

@@ -0,0 +1 @@
+hello

rest/internal/header/headers.go

@@ -3,8 +3,18 @@ package header
 const (
 	// ApplicationJson stands for application/json.
 	ApplicationJson = "application/json"
+	// CacheControl is the header key for Cache-Control.
+	CacheControl = "Cache-Control"
+	// CacheControlNoCache is the value for Cache-Control: no-cache.
+	CacheControlNoCache = "no-cache"
+	// Connection is the header key for Connection.
+	Connection = "Connection"
+	// ConnectionKeepAlive is the value for Connection: keep-alive.
+	ConnectionKeepAlive = "keep-alive"
 	// ContentType is the header key for Content-Type.
 	ContentType = "Content-Type"
-	// JsonContentType is the content type for JSON.
+	// ContentTypeJson is the content type for JSON.
-	JsonContentType = "application/json; charset=utf-8"
+	ContentTypeJson = "application/json; charset=utf-8"
+	// ContentTypeEventStream is the content type for event stream.
+	ContentTypeEventStream = "text/event-stream"
 )

rest/router/patrouter_test.go

@@ -628,7 +628,7 @@ func TestParseWrappedRequest(t *testing.T) {
 func TestParseWrappedGetRequestWithJsonHeader(t *testing.T) {
 	r, err := http.NewRequest(http.MethodGet, "http://hello.com/kevin/2017", bytes.NewReader(nil))
 	assert.Nil(t, err)
-	r.Header.Set(httpx.ContentType, header.JsonContentType)
+	r.Header.Set(httpx.ContentType, header.ContentTypeJson)
 
 	type (
 		Request struct {
@@ -661,7 +661,7 @@ func TestParseWrappedGetRequestWithJsonHeader(t *testing.T) {
 func TestParseWrappedHeadRequestWithJsonHeader(t *testing.T) {
 	r, err := http.NewRequest(http.MethodHead, "http://hello.com/kevin/2017", bytes.NewReader(nil))
 	assert.Nil(t, err)
-	r.Header.Set(httpx.ContentType, header.JsonContentType)
+	r.Header.Set(httpx.ContentType, header.ContentTypeJson)
 
 	type (
 		Request struct {
@@ -758,7 +758,7 @@ func TestParseWithAllUtf8(t *testing.T) {
 	r, err := http.NewRequest(http.MethodPost, "http://hello.com/kevin/2017?nickname=whatever&zipcode=200000",
 		bytes.NewBufferString(`{"location": "shanghai", "time": 20170912}`))
 	assert.Nil(t, err)
-	r.Header.Set(httpx.ContentType, header.JsonContentType)
+	r.Header.Set(httpx.ContentType, header.ContentTypeJson)
 
 	router := NewRouter()
 	err = router.Handle(http.MethodPost, "/:name/:year", http.HandlerFunc(
@@ -948,7 +948,7 @@ func TestParseWithMissingAllPaths(t *testing.T) {
 func TestParseGetWithContentLengthHeader(t *testing.T) {
 	r, err := http.NewRequest(http.MethodGet, "http://hello.com/kevin/2017?nickname=whatever&zipcode=200000", nil)
 	assert.Nil(t, err)
-	r.Header.Set(httpx.ContentType, header.JsonContentType)
+	r.Header.Set(httpx.ContentType, header.ContentTypeJson)
 	r.Header.Set(contentLength, "1024")
 
 	router := NewRouter()
@@ -976,7 +976,7 @@ func TestParseJsonPostWithTypeMismatch(t *testing.T) {
 	r, err := http.NewRequest(http.MethodPost, "http://hello.com/kevin/2017?nickname=whatever&zipcode=200000",
 		bytes.NewBufferString(`{"time": "20170912"}`))
 	assert.Nil(t, err)
-	r.Header.Set(httpx.ContentType, header.JsonContentType)
+	r.Header.Set(httpx.ContentType, header.ContentTypeJson)
 
 	router := NewRouter()
 	err = router.Handle(http.MethodPost, "/:name/:year", http.HandlerFunc(
@@ -1002,7 +1002,7 @@ func TestParseJsonPostWithInt2String(t *testing.T) {
 	r, err := http.NewRequest(http.MethodPost, "http://hello.com/kevin/2017",
 		bytes.NewBufferString(`{"time": 20170912}`))
 	assert.Nil(t, err)
-	r.Header.Set(httpx.ContentType, header.JsonContentType)
+	r.Header.Set(httpx.ContentType, header.ContentTypeJson)
 
 	router := NewRouter()
 	err = router.Handle(http.MethodPost, "/:name/:year", http.HandlerFunc(

rest/server.go

@@ -63,6 +63,11 @@ func NewServer(c RestConf, opts ...RunOption) (*Server, error) {
 	return server, nil
 }
 
+// AddRoute adds given route into the Server.
+func (s *Server) AddRoute(r Route, opts ...RouteOption) {
+	s.AddRoutes([]Route{r}, opts...)
+}
+
 // AddRoutes add given routes into the Server.
 func (s *Server) AddRoutes(rs []Route, opts ...RouteOption) {
 	r := featuredRoutes{
@@ -74,11 +79,6 @@ func (s *Server) AddRoutes(rs []Route, opts ...RouteOption) {
 	s.ngin.addRoutes(r)
 }
 
-// AddRoute adds given route into the Server.
-func (s *Server) AddRoute(r Route, opts ...RouteOption) {
-	s.AddRoutes([]Route{r}, opts...)
-}
-
 // PrintRoutes prints the added routes to stdout.
 func (s *Server) PrintRoutes() {
 	s.ngin.print()
@@ -119,6 +119,16 @@ func (s *Server) Use(middleware Middleware) {
 	s.ngin.use(middleware)
 }
 
+// build builds the Server and binds the routes to the router.
+func (s *Server) build() error {
+	return s.ngin.bindRoutes(s.router)
+}
+
+// serve serves the HTTP requests using the Server's router.
+func (s *Server) serve(w http.ResponseWriter, r *http.Request) {
+	s.router.ServeHTTP(w, r)
+}
+
 // ToMiddleware converts the given handler to a Middleware.
 func ToMiddleware(handler func(next http.Handler) http.Handler) Middleware {
 	return func(handle http.HandlerFunc) http.HandlerFunc {
@@ -279,10 +289,18 @@ func WithSignature(signature SignatureConf) RouteOption {
 	}
 }
 
+// WithSSE returns a RouteOption to enable server-sent events.
+func WithSSE() RouteOption {
+	return func(r *featuredRoutes) {
+		r.sse = true
+		r.timeout = ptrOfDuration(0)
+	}
+}
+
 // WithTimeout returns a RouteOption to set timeout with given value.
 func WithTimeout(timeout time.Duration) RouteOption {
 	return func(r *featuredRoutes) {
-		r.timeout = timeout
+		r.timeout = &timeout
 	}
 }
 
@@ -317,6 +335,10 @@ func handleError(err error) {
 	panic(err)
 }
 
+func ptrOfDuration(d time.Duration) *time.Duration {
+	return &d
+}
+
 func validateSecret(secret string) {
 	if len(secret) < 8 {
 		panic("secret's length can't be less than 8")

rest/server_test.go

@@ -20,6 +20,7 @@ import (
 	"github.com/zeromicro/go-zero/rest/chain"
 	"github.com/zeromicro/go-zero/rest/httpx"
 	"github.com/zeromicro/go-zero/rest/internal/cors"
+	"github.com/zeromicro/go-zero/rest/internal/header"
 	"github.com/zeromicro/go-zero/rest/router"
 )
 
@@ -344,7 +345,7 @@ func TestWithPriority(t *testing.T) {
 func TestWithTimeout(t *testing.T) {
 	var fr featuredRoutes
 	WithTimeout(time.Hour)(&fr)
-	assert.Equal(t, time.Hour, fr.timeout)
+	assert.Equal(t, time.Hour, *fr.timeout)
 }
 
 func TestWithTLSConfig(t *testing.T) {
@@ -754,6 +755,40 @@ Port: 54321
 	}
 }
 
+func TestServerEventStream(t *testing.T) {
+	server := MustNewServer(RestConf{})
+	server.AddRoutes([]Route{
+		{
+			Method: http.MethodGet,
+			Path:   "/foo",
+			Handler: func(w http.ResponseWriter, r *http.Request) {
+				w.Write([]byte("foo"))
+			},
+		},
+		{
+			Method: http.MethodGet,
+			Path:   "/bar",
+			Handler: func(w http.ResponseWriter, r *http.Request) {
+				w.Write([]byte("bar"))
+			},
+		},
+	}, WithSSE())
+
+	check := func(val string) {
+		req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("/%s", val), http.NoBody)
+		assert.Nil(t, err)
+		rr := httptest.NewRecorder()
+		serve(server, rr, req)
+		assert.Equal(t, http.StatusOK, rr.Code)
+		assert.Equal(t, header.ContentTypeEventStream, rr.Header().Get(header.ContentType))
+		assert.Equal(t, header.CacheControlNoCache, rr.Header().Get(header.CacheControl))
+		assert.Equal(t, header.ConnectionKeepAlive, rr.Header().Get(header.Connection))
+		assert.Equal(t, val, rr.Body.String())
+	}
+	check("foo")
+	check("bar")
+}
+
 //go:embed testdata
 var content embed.FS
 
@@ -770,7 +805,7 @@ func TestServerEmbedFileSystem(t *testing.T) {
 }
 
 // serve is for test purpose, allow developer to do a unit test with
-// all defined router without starting an HTTP Server.
+// all defined routes without starting an HTTP Server.
 //
 // For example:
 //
@@ -784,6 +819,6 @@ func TestServerEmbedFileSystem(t *testing.T) {
 //	serve(server, w, r)
 //	// verify the response
 func serve(s *Server, w http.ResponseWriter, r *http.Request) {
-	s.ngin.bindRoutes(s.router)
+	_ = s.build()
-	s.router.ServeHTTP(w, r)
+	s.serve(w, r)
 }

rest/serverless.go

@@ -0,0 +1,27 @@
+package rest
+
+import "net/http"
+
+// Serverless is a wrapper around Server that allows it to be used in serverless environments.
+type Serverless struct {
+	server *Server
+}
+
+// NewServerless creates a new Serverless instance from the provided Server.
+func NewServerless(server *Server) (*Serverless, error) {
+	// Ensure the server is built before using it in a serverless context.
+	// Why not call server.build() when serving requests,
+	// is because we need to ensure fail fast behavior.
+	if err := server.build(); err != nil {
+		return nil, err
+	}
+
+	return &Serverless{
+		server: server,
+	}, nil
+}
+
+// Serve handles HTTP requests by delegating them to the underlying Server instance.
+func (s *Serverless) Serve(w http.ResponseWriter, r *http.Request) {
+	s.server.serve(w, r)
+}

rest/serverless_test.go

@@ -0,0 +1,67 @@
+package rest
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/zeromicro/go-zero/core/conf"
+	"github.com/zeromicro/go-zero/core/logx/logtest"
+)
+
+func TestNewServerless(t *testing.T) {
+	logtest.Discard(t)
+
+	const configYaml = `
+Name: foo
+Host: localhost
+Port: 0
+`
+	var cnf RestConf
+	assert.Nil(t, conf.LoadFromYamlBytes([]byte(configYaml), &cnf))
+
+	svr, err := NewServer(cnf)
+	assert.NoError(t, err)
+
+	svr.AddRoute(Route{
+		Method: http.MethodGet,
+		Path:   "/",
+		Handler: func(w http.ResponseWriter, r *http.Request) {
+			w.Write([]byte("Hello World"))
+		},
+	})
+
+	serverless, err := NewServerless(svr)
+	assert.NoError(t, err)
+
+	w := httptest.NewRecorder()
+	r := httptest.NewRequest(http.MethodGet, "/", nil)
+	serverless.Serve(w, r)
+	assert.Equal(t, http.StatusOK, w.Code)
+	assert.Equal(t, "Hello World", w.Body.String())
+}
+
+func TestNewServerlessWithError(t *testing.T) {
+	logtest.Discard(t)
+
+	const configYaml = `
+Name: foo
+Host: localhost
+Port: 0
+`
+	var cnf RestConf
+	assert.Nil(t, conf.LoadFromYamlBytes([]byte(configYaml), &cnf))
+
+	svr, err := NewServer(cnf)
+	assert.NoError(t, err)
+
+	svr.AddRoute(Route{
+		Method:  http.MethodGet,
+		Path:    "notstartwith/",
+		Handler: nil,
+	})
+
+	_, err = NewServerless(svr)
+	assert.Error(t, err)
+}

rest/types.go

@@ -31,10 +31,11 @@ type (
 	}
 
 	featuredRoutes struct {
-		timeout   time.Duration
+		timeout   *time.Duration
 		priority  bool
 		jwt       jwtSetting
 		signature signatureSetting
+		sse       bool
 		routes    []Route
 		maxBytes  int64
 	}

tools/goctl/.gitignore

@@ -0,0 +1 @@
+dist

tools/goctl/api/cmd.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"github.com/spf13/cobra"
+
 	"github.com/zeromicro/go-zero/tools/goctl/api/apigen"
 	"github.com/zeromicro/go-zero/tools/goctl/api/dartgen"
 	"github.com/zeromicro/go-zero/tools/goctl/api/docgen"
@@ -10,6 +11,7 @@ import (
 	"github.com/zeromicro/go-zero/tools/goctl/api/javagen"
 	"github.com/zeromicro/go-zero/tools/goctl/api/ktgen"
 	"github.com/zeromicro/go-zero/tools/goctl/api/new"
+	"github.com/zeromicro/go-zero/tools/goctl/api/swagger"
 	"github.com/zeromicro/go-zero/tools/goctl/api/tsgen"
 	"github.com/zeromicro/go-zero/tools/goctl/api/validate"
 	"github.com/zeromicro/go-zero/tools/goctl/config"
@@ -31,6 +33,7 @@ var (
 	ktCmd       = cobrax.NewCommand("kt", cobrax.WithRunE(ktgen.KtCommand))
 	pluginCmd   = cobrax.NewCommand("plugin", cobrax.WithRunE(plugin.PluginCommand))
 	tsCmd       = cobrax.NewCommand("ts", cobrax.WithRunE(tsgen.TsCommand))
+	swaggerCmd  = cobrax.NewCommand("swagger", cobrax.WithRunE(swagger.Command))
 )
 
 func init() {
@@ -46,6 +49,7 @@ func init() {
 		pluginCmdFlags   = pluginCmd.Flags()
 		tsCmdFlags       = tsCmd.Flags()
 		validateCmdFlags = validateCmd.Flags()
+		swaggerCmdFlags  = swaggerCmd.Flags()
 	)
 
 	apiCmdFlags.StringVar(&apigen.VarStringOutput, "o")
@@ -73,6 +77,7 @@ func init() {
 	goCmdFlags.StringVar(&gogen.VarStringRemote, "remote")
 	goCmdFlags.StringVar(&gogen.VarStringBranch, "branch")
 	goCmdFlags.BoolVar(&gogen.VarBoolWithTest, "test")
+	goCmdFlags.BoolVar(&gogen.VarBoolTypeGroup, "type-group")
 	goCmdFlags.StringVarWithDefaultValue(&gogen.VarStringStyle, "style", config.DefaultFormat)
 
 	javaCmdFlags.StringVar(&javagen.VarStringDir, "dir")
@@ -97,8 +102,13 @@ func init() {
 	tsCmdFlags.StringVar(&tsgen.VarStringCaller, "caller")
 	tsCmdFlags.BoolVar(&tsgen.VarBoolUnWrap, "unwrap")
 
+	swaggerCmdFlags.StringVar(&swagger.VarStringAPI, "api")
+	swaggerCmdFlags.StringVar(&swagger.VarStringDir, "dir")
+	swaggerCmdFlags.StringVar(&swagger.VarStringFilename, "filename")
+	swaggerCmdFlags.BoolVar(&swagger.VarBoolYaml, "yaml")
+
 	validateCmdFlags.StringVar(&validate.VarStringAPI, "api")
 
 	// Add sub-commands
-	Cmd.AddCommand(dartCmd, docCmd, formatCmd, goCmd, javaCmd, ktCmd, newCmd, pluginCmd, tsCmd, validateCmd)
+	Cmd.AddCommand(dartCmd, docCmd, formatCmd, goCmd, javaCmd, ktCmd, newCmd, pluginCmd, tsCmd, validateCmd, swaggerCmd)
 }

tools/goctl/api/format/format.go

@@ -42,9 +42,20 @@ var (
 func GoFormatApi(_ *cobra.Command, _ []string) error {
 	var be errorx.BatchError
 	if VarBoolUseStdin {
+		if env.UseExperimental() {
+			data, err := io.ReadAll(os.Stdin)
+			if err != nil {
+				be.Add(err)
+			} else {
+				if err := apiF.Source(data, os.Stdout); err != nil {
+					be.Add(err)
+				}
+			}
+		} else {
 			if err := apiFormatReader(os.Stdin, VarStringDir, VarBoolSkipCheckDeclare); err != nil {
 				be.Add(err)
 			}
+		}
 	} else {
 		if len(VarStringDir) == 0 {
 			return errors.New("missing -dir")

tools/goctl/api/gogen/gen.go

@@ -40,6 +40,8 @@ var (
 	// VarStringStyle describes the style of output files.
 	VarStringStyle  string
 	VarBoolWithTest bool
+	// VarBoolTypeGroup describes whether to group types.
+	VarBoolTypeGroup bool
 )
 
 // GoCommand gen go project files from command line

tools/goctl/api/gogen/gentypes.go

@@ -6,8 +6,10 @@ import (
 	"io"
 	"os"
 	"path"
+	"sort"
 	"strings"
 
+	"github.com/zeromicro/go-zero/core/collection"
 	"github.com/zeromicro/go-zero/tools/goctl/api/spec"
 	apiutil "github.com/zeromicro/go-zero/tools/goctl/api/util"
 	"github.com/zeromicro/go-zero/tools/goctl/config"
@@ -39,20 +41,152 @@ func BuildTypes(types []spec.Type) (string, error) {
 	return builder.String(), nil
 }
 
-func genTypes(dir string, cfg *config.Config, api *spec.ApiSpec) error {
+func getTypeName(tp spec.Type) string {
-	val, err := BuildTypes(api.Types)
+	if tp == nil {
+		return ""
+	}
+	switch val := tp.(type) {
+	case spec.DefineStruct:
+		typeName := util.Title(tp.Name())
+		return typeName
+	case spec.PointerType:
+		return getTypeName(val.Type)
+	case spec.ArrayType:
+		return getTypeName(val.Value)
+	}
+	return ""
+}
+
+func genTypesWithGroup(dir string, cfg *config.Config, api *spec.ApiSpec) error {
+	groupTypes := make(map[string]map[string]spec.Type)
+	typesBelongToFiles := make(map[string]*collection.Set)
+
+	for _, v := range api.Service.Groups {
+		group := v.GetAnnotation(groupProperty)
+		if len(group) == 0 {
+			group = groupTypeDefault
+		}
+		// convert filepath to Identifier name spec.
+		group = strings.TrimPrefix(group, "/")
+		group = strings.TrimSuffix(group, "/")
+		group = util.SafeString(group)
+		for _, v := range v.Routes {
+			requestTypeName := getTypeName(v.RequestType)
+			responseTypeName := getTypeName(v.ResponseType)
+			requestTypeFileSet, ok := typesBelongToFiles[requestTypeName]
+			if !ok {
+				requestTypeFileSet = collection.NewSet()
+			}
+			if len(requestTypeName) > 0 {
+				requestTypeFileSet.AddStr(group)
+				typesBelongToFiles[requestTypeName] = requestTypeFileSet
+			}
+
+			responseTypeFileSet, ok := typesBelongToFiles[responseTypeName]
+			if !ok {
+				responseTypeFileSet = collection.NewSet()
+			}
+			if len(responseTypeName) > 0 {
+				responseTypeFileSet.AddStr(group)
+				typesBelongToFiles[responseTypeName] = responseTypeFileSet
+			}
+		}
+	}
+
+	typesInOneFile := make(map[string]*collection.Set)
+	for typeName, fileSet := range typesBelongToFiles {
+		count := fileSet.Count()
+		switch {
+		case count == 0: // it means there has no structure type or no request/response body
+			continue
+		case count == 1: // it means a structure type used in only one group.
+			groupName := fileSet.KeysStr()[0]
+			typeSet, ok := typesInOneFile[groupName]
+			if !ok {
+				typeSet = collection.NewSet()
+			}
+			typeSet.AddStr(typeName)
+			typesInOneFile[groupName] = typeSet
+		default: // it means this type is used in multiple groups.
+			continue
+		}
+	}
+
+	for _, v := range api.Types {
+		typeName := util.Title(v.Name())
+		groupSet, ok := typesBelongToFiles[typeName]
+		var typeCount int
+		if !ok {
+			typeCount = 0
+		} else {
+			typeCount = groupSet.Count()
+		}
+
+		if typeCount == 0 { // not belong to any group
+			types, ok := groupTypes[groupTypeDefault]
+			if !ok {
+				types = make(map[string]spec.Type)
+			}
+			types[typeName] = v
+			groupTypes[groupTypeDefault] = types
+			continue
+		}
+
+		if typeCount == 1 { // belong to one group
+			groupName := groupSet.KeysStr()[0]
+			types, ok := groupTypes[groupName]
+			if !ok {
+				types = make(map[string]spec.Type)
+			}
+			types[typeName] = v
+			groupTypes[groupName] = types
+			continue
+		}
+
+		// belong to multiple groups
+		types, ok := groupTypes[groupTypeDefault]
+		if !ok {
+			types = make(map[string]spec.Type)
+		}
+		types[typeName] = v
+		groupTypes[groupTypeDefault] = types
+
+	}
+
+	for group, typeGroup := range groupTypes {
+		var types []spec.Type
+		for _, v := range typeGroup {
+			types = append(types, v)
+		}
+		sort.Slice(types, func(i, j int) bool {
+			return types[i].Name() < types[j].Name()
+		})
+
+		if err := writeTypes(dir, group, cfg, types); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func writeTypes(dir, baseFilename string, cfg *config.Config, types []spec.Type) error {
+	if len(types) == 0 {
+		return nil
+	}
+	val, err := BuildTypes(types)
 	if err != nil {
 		return err
 	}
 
-	typeFilename, err := format.FileNamingFormat(cfg.NamingFormat, typesFile)
+	typeFilename, err := format.FileNamingFormat(cfg.NamingFormat, baseFilename)
 	if err != nil {
 		return err
 	}
 
 	typeFilename = typeFilename + ".go"
 	filename := path.Join(dir, typesDir, typeFilename)
-	os.Remove(filename)
+	_ = os.Remove(filename)
 
 	return genFile(fileGenConfig{
 		dir:             dir,
@@ -70,6 +204,13 @@ func genTypes(dir string, cfg *config.Config, api *spec.ApiSpec) error {
 	})
 }
 
+func genTypes(dir string, cfg *config.Config, api *spec.ApiSpec) error {
+	if VarBoolTypeGroup {
+		return genTypesWithGroup(dir, cfg, api)
+	}
+	return writeTypes(dir, typesFile, cfg, api.Types)
+}
+
 func writeType(writer io.Writer, tp spec.Type) error {
 	structType, ok := tp.(spec.DefineStruct)
 	if !ok {

tools/goctl/api/gogen/vars.go

@@ -10,4 +10,6 @@ const (
 	middlewareDir = internal + "middleware"
 	typesDir      = internal + typesPacket
 	groupProperty = "group"
+
+	groupTypeDefault="types"
 )

tools/goctl/api/javagen/gencomponents.go

@@ -8,10 +8,10 @@ import (
 	"fmt"
 	"io"
 	"path"
+	"slices"
 	"strings"
 	"text/template"
 
-	"github.com/zeromicro/go-zero/core/stringx"
 	"github.com/zeromicro/go-zero/tools/goctl/api/spec"
 	apiutil "github.com/zeromicro/go-zero/tools/goctl/api/util"
 	"github.com/zeromicro/go-zero/tools/goctl/internal/version"
@@ -96,13 +96,13 @@ func (c *componentsContext) createComponent(dir, packetName string, ty spec.Type
 	for _, item := range c.responseTypes {
 		if item.Name() == defineStruct.Name() {
 			superClassName = "HttpResponseData"
-			if !stringx.Contains(c.imports, httpResponseData) {
+			if !slices.Contains(c.imports, httpResponseData) {
 				c.imports = append(c.imports, httpResponseData)
 			}
 			break
 		}
 	}
-	if superClassName == "HttpData" && !stringx.Contains(c.imports, httpData) {
+	if superClassName == "HttpData" && !slices.Contains(c.imports, httpData) {
 		c.imports = append(c.imports, httpData)
 	}
 
@@ -266,7 +266,7 @@ func (c *componentsContext) genGetSet(writer io.Writer, indent int) error {
 		tyString := javaType
 		decorator := ""
 		javaPrimitiveType := []string{"int", "long", "boolean", "float", "double", "short"}
-		if !stringx.Contains(javaPrimitiveType, javaType) {
+		if !slices.Contains(javaPrimitiveType, javaType) {
 			if member.IsOptional() || member.IsOmitEmpty() {
 				decorator = "@Nullable "
 			} else {

tools/goctl/api/spec/fn.go

@@ -3,9 +3,9 @@ package spec
 import (
 	"errors"
 	"path"
+	"slices"
 	"strings"
 
-	"github.com/zeromicro/go-zero/core/stringx"
 	"github.com/zeromicro/go-zero/tools/goctl/util"
 )
 
@@ -57,14 +57,14 @@ func (m Member) Tags() []*Tag {
 
 // IsOptional returns true if tag is optional
 func (m Member) IsOptional() bool {
-	if !m.IsBodyMember() {
+	if !m.IsBodyMember() && !m.IsFormMember() {
 		return false
 	}
 
 	tag := m.Tags()
 	for _, item := range tag {
-		if item.Key == bodyTagKey {
+		if item.Key == bodyTagKey || item.Key == formTagKey {
-			if stringx.Contains(item.Options, "optional") {
+			if slices.Contains(item.Options, "optional") {
 				return true
 			}
 		}
@@ -81,7 +81,7 @@ func (m Member) IsOmitEmpty() bool {
 	tag := m.Tags()
 	for _, item := range tag {
 		if item.Key == bodyTagKey {
-			if stringx.Contains(item.Options, "omitempty") {
+			if slices.Contains(item.Options, "omitempty") {
 				return true
 			}
 		}
@@ -93,7 +93,7 @@ func (m Member) IsOmitEmpty() bool {
 func (m Member) GetPropertyName() (string, error) {
 	tags := m.Tags()
 	for _, tag := range tags {
-		if stringx.Contains(definedKeys, tag.Key) {
+		if slices.Contains(definedKeys, tag.Key) {
 			if tag.Name == "-" {
 				return util.Untitle(m.Name), nil
 			}

tools/goctl/api/spec/spec.go

@@ -21,7 +21,7 @@ type (
 
 	// ApiSpec describes an api file
 	ApiSpec struct {
-		Info    Info      // Deprecated: useless expression
+		Info    Info
 		Syntax  ApiSyntax // Deprecated: useless expression
 		Imports []Import  // Deprecated: useless expression
 		Types   []Type

tools/goctl/api/spec/tags.go

@@ -49,6 +49,9 @@ func Parse(tag string) (*Tags, error) {
 
 // Get gets tag value by specified key
 func (t *Tags) Get(key string) (*Tag, error) {
+	if t == nil {
+		return nil, errTagNotExist
+	}
 	for _, tag := range t.tags {
 		if tag.Key == key {
 			return tag, nil
@@ -60,6 +63,9 @@ func (t *Tags) Get(key string) (*Tag, error) {
 
 // Keys returns all keys in Tags
 func (t *Tags) Keys() []string {
+	if t == nil {
+		return []string{}
+	}
 	var keys []string
 	for _, tag := range t.tags {
 		keys = append(keys, tag.Key)
@@ -69,5 +75,8 @@ func (t *Tags) Keys() []string {
 
 // Tags returns all tags in Tags
 func (t *Tags) Tags() []*Tag {
+	if t == nil {
+		return []*Tag{}
+	}
 	return t.tags
 }

tools/goctl/api/spec/tags_test.go

@@ -0,0 +1,68 @@
+package spec
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTags_Get(t *testing.T) {
+	tags := &Tags{
+		tags: []*Tag{
+			{Key: "json", Name: "foo", Options: []string{"omitempty"}},
+			{Key: "xml", Name: "bar", Options: nil},
+		},
+	}
+
+	tag, err := tags.Get("json")
+	assert.NoError(t, err)
+	assert.NotNil(t, tag)
+	assert.Equal(t, "json", tag.Key)
+	assert.Equal(t, "foo", tag.Name)
+
+	_, err = tags.Get("yaml")
+	assert.Error(t, err)
+
+	var nilTags *Tags
+	_, err = nilTags.Get("json")
+	assert.Error(t, err)
+}
+
+func TestTags_Keys(t *testing.T) {
+	tags := &Tags{
+		tags: []*Tag{
+			{Key: "json", Name: "foo", Options: []string{"omitempty"}},
+			{Key: "xml", Name: "bar", Options: nil},
+		},
+	}
+
+	keys := tags.Keys()
+	expected := []string{"json", "xml"}
+	assert.Equal(t, expected, keys)
+
+	var nilTags *Tags
+	nilKeys := nilTags.Keys()
+	assert.Empty(t, nilKeys)
+}
+
+func TestTags_Tags(t *testing.T) {
+	tags := &Tags{
+		tags: []*Tag{
+			{Key: "json", Name: "foo", Options: []string{"omitempty"}},
+			{Key: "xml", Name: "bar", Options: nil},
+		},
+	}
+
+	result := tags.Tags()
+	assert.Len(t, result, 2)
+	assert.Equal(t, "json", result[0].Key)
+	assert.Equal(t, "foo", result[0].Name)
+	assert.Equal(t, []string{"omitempty"}, result[0].Options)
+	assert.Equal(t, "xml", result[1].Key)
+	assert.Equal(t, "bar", result[1].Name)
+	assert.Nil(t, result[1].Options)
+
+	var nilTags *Tags
+	nilResult := nilTags.Tags()
+	assert.Empty(t, nilResult)
+}

tools/goctl/api/swagger/annotation.go

@@ -0,0 +1,75 @@
+package swagger
+
+import (
+	"strconv"
+
+	"github.com/zeromicro/go-zero/tools/goctl/util"
+	"google.golang.org/grpc/metadata"
+)
+
+func getBoolFromKVOrDefault(properties map[string]string, key string, def bool) bool {
+	if len(properties) == 0 {
+		return def
+	}
+	md := metadata.New(properties)
+	val := md.Get(key)
+	if len(val) == 0 {
+		return def
+	}
+	str := util.Unquote(val[0])
+	if len(str) == 0 {
+		return def
+	}
+	res, _ := strconv.ParseBool(str)
+	return res
+}
+
+func getStringFromKVOrDefault(properties map[string]string, key string, def string) string {
+	if len(properties) == 0 {
+		return def
+	}
+	md := metadata.New(properties)
+	val := md.Get(key)
+	if len(val) == 0 {
+		return def
+	}
+	str := util.Unquote(val[0])
+	if len(str) == 0 {
+		return def
+	}
+	return str
+}
+
+func getListFromInfoOrDefault(properties map[string]string, key string, def []string) []string {
+	if len(properties) == 0 {
+		return def
+	}
+	md := metadata.New(properties)
+	val := md.Get(key)
+	if len(val) == 0 {
+		return def
+	}
+
+	str := util.Unquote(val[0])
+	if len(str) == 0 {
+		return def
+	}
+	resp := util.FieldsAndTrimSpace(str, commaRune)
+	if len(resp) == 0 {
+		return def
+	}
+	return resp
+}
+
+func getFirstUsableString(def ...string) string {
+	if len(def) == 0 {
+		return ""
+	}
+	for _, val := range def {
+		str := util.Unquote(val)
+		if len(str) != 0 {
+			return str
+		}
+	}
+	return ""
+}

tools/goctl/api/swagger/annotation_test.go

@@ -0,0 +1,53 @@
+package swagger
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_getBoolFromKVOrDefault(t *testing.T) {
+	properties := map[string]string{
+		"enabled":     `"true"`,
+		"disabled":    `"false"`,
+		"invalid":     `"notabool"`,
+		"empty_value": `""`,
+	}
+
+	assert.True(t, getBoolFromKVOrDefault(properties, "enabled", false))
+	assert.False(t, getBoolFromKVOrDefault(properties, "disabled", true))
+	assert.False(t, getBoolFromKVOrDefault(properties, "invalid", false))
+	assert.True(t, getBoolFromKVOrDefault(properties, "missing", true))
+	assert.False(t, getBoolFromKVOrDefault(properties, "empty_value", false))
+	assert.False(t, getBoolFromKVOrDefault(nil, "nil", false))
+	assert.False(t, getBoolFromKVOrDefault(map[string]string{}, "empty", false))
+}
+
+func Test_getStringFromKVOrDefault(t *testing.T) {
+	properties := map[string]string{
+		"name":  `"example"`,
+		"empty": `""`,
+	}
+
+	assert.Equal(t, "example", getStringFromKVOrDefault(properties, "name", "default"))
+	assert.Equal(t, "default", getStringFromKVOrDefault(properties, "empty", "default"))
+	assert.Equal(t, "default", getStringFromKVOrDefault(properties, "missing", "default"))
+	assert.Equal(t, "default", getStringFromKVOrDefault(nil, "nil", "default"))
+	assert.Equal(t, "default", getStringFromKVOrDefault(map[string]string{}, "empty", "default"))
+}
+
+func Test_getListFromInfoOrDefault(t *testing.T) {
+	properties := map[string]string{
+		"list":  `"a, b, c"`,
+		"empty": `""`,
+	}
+
+	assert.Equal(t, []string{"a", " b", " c"}, getListFromInfoOrDefault(properties, "list", []string{"default"}))
+	assert.Equal(t, []string{"default"}, getListFromInfoOrDefault(properties, "empty", []string{"default"}))
+	assert.Equal(t, []string{"default"}, getListFromInfoOrDefault(properties, "missing", []string{"default"}))
+	assert.Equal(t, []string{"default"}, getListFromInfoOrDefault(nil, "nil", []string{"default"}))
+	assert.Equal(t, []string{"default"}, getListFromInfoOrDefault(map[string]string{}, "empty", []string{"default"}))
+	assert.Equal(t, []string{"default"}, getListFromInfoOrDefault(map[string]string{
+		"foo": ",,",
+	}, "foo", []string{"default"}))
+}

tools/goctl/api/swagger/api.go

@@ -0,0 +1,138 @@
+package swagger
+
+import "github.com/zeromicro/go-zero/tools/goctl/api/spec"
+
+func fillAllStructs(api *spec.ApiSpec) {
+	var (
+		tps         []spec.Type
+		structTypes = make(map[string]spec.DefineStruct)
+		groups      []spec.Group
+	)
+	for _, tp := range api.Types {
+		structTypes[tp.Name()] = tp.(spec.DefineStruct)
+	}
+
+	for _, tp := range api.Types {
+		filledTP := fillStruct("", tp, structTypes)
+		tps = append(tps, filledTP)
+		structTypes[filledTP.Name()] = filledTP.(spec.DefineStruct)
+	}
+
+	for _, group := range api.Service.Groups {
+		var routes []spec.Route
+		for _, route := range group.Routes {
+			route.RequestType = fillStruct("", route.RequestType, structTypes)
+			route.ResponseType = fillStruct("", route.ResponseType, structTypes)
+			routes = append(routes, route)
+		}
+		group.Routes = routes
+		groups = append(groups, group)
+	}
+	api.Service.Groups = groups
+	api.Types = tps
+}
+
+func fillStruct(parent string, tp spec.Type, allTypes map[string]spec.DefineStruct) spec.Type {
+	switch val := tp.(type) {
+	case spec.DefineStruct:
+		var members []spec.Member
+		for _, member := range val.Members {
+			switch memberType := member.Type.(type) {
+			case spec.PointerType:
+				member.Type = spec.PointerType{
+					RawName: memberType.RawName,
+					Type:    fillStruct(val.Name(), memberType.Type, allTypes),
+				}
+			case spec.ArrayType:
+				member.Type = spec.ArrayType{
+					RawName: memberType.RawName,
+					Value:   fillStruct(val.Name(), memberType.Value, allTypes),
+				}
+			case spec.MapType:
+				member.Type = spec.MapType{
+					RawName: memberType.RawName,
+					Key:     memberType.Key,
+					Value:   fillStruct(val.Name(), memberType.Value, allTypes),
+				}
+			case spec.DefineStruct:
+				if parent != memberType.Name() { // avoid recursive struct
+					if st, ok := allTypes[memberType.Name()]; ok {
+						member.Type = fillStruct("", st, allTypes)
+					}
+				}
+			case spec.NestedStruct:
+				member.Type = fillStruct("", member.Type, allTypes)
+			}
+			members = append(members, member)
+		}
+		if len(members) == 0 {
+			st, ok := allTypes[val.RawName]
+			if ok {
+				members = st.Members
+			}
+		}
+		val.Members = members
+		return val
+	case spec.NestedStruct:
+		var members []spec.Member
+		for _, member := range val.Members {
+			switch memberType := member.Type.(type) {
+			case spec.PointerType:
+				member.Type = spec.PointerType{
+					RawName: memberType.RawName,
+					Type:    fillStruct(val.Name(), memberType.Type, allTypes),
+				}
+			case spec.ArrayType:
+				member.Type = spec.ArrayType{
+					RawName: memberType.RawName,
+					Value:   fillStruct(val.Name(), memberType.Value, allTypes),
+				}
+			case spec.MapType:
+				member.Type = spec.MapType{
+					RawName: memberType.RawName,
+					Key:     memberType.Key,
+					Value:   fillStruct(val.Name(), memberType.Value, allTypes),
+				}
+			case spec.DefineStruct:
+				if parent != memberType.Name() { // avoid recursive struct
+					if st, ok := allTypes[memberType.Name()]; ok {
+						member.Type = fillStruct("", st, allTypes)
+					}
+				}
+			case spec.NestedStruct:
+				if parent != memberType.Name() {
+					if st, ok := allTypes[memberType.Name()]; ok {
+						member.Type = fillStruct("", st, allTypes)
+					}
+				}
+			}
+			members = append(members, member)
+		}
+		if len(members) == 0 {
+			st, ok := allTypes[val.RawName]
+			if ok {
+				members = st.Members
+			}
+		}
+		val.Members = members
+		return val
+	case spec.PointerType:
+		return spec.PointerType{
+			RawName: val.RawName,
+			Type:    fillStruct(parent, val.Type, allTypes),
+		}
+	case spec.ArrayType:
+		return spec.ArrayType{
+			RawName: val.RawName,
+			Value:   fillStruct(parent, val.Value, allTypes),
+		}
+	case spec.MapType:
+		return spec.MapType{
+			RawName: val.RawName,
+			Key:     val.Key,
+			Value:   fillStruct(parent, val.Value, allTypes),
+		}
+	default:
+		return tp
+	}
+}

tools/goctl/api/swagger/command.go

@@ -0,0 +1,87 @@
+package swagger
+
+import (
+	"encoding/json"
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/zeromicro/go-zero/tools/goctl/pkg/parser/api/parser"
+	"github.com/zeromicro/go-zero/tools/goctl/util/pathx"
+	"gopkg.in/yaml.v2"
+)
+
+var (
+	// VarStringAPI specifies the API filename.
+	VarStringAPI string
+
+	// VarStringDir specifies the directory to generate swagger file.
+	VarStringDir string
+
+	// VarStringFilename specifies the generated swagger file name without the extension.
+	VarStringFilename string
+
+	// VarBoolYaml specifies whether to generate a YAML file.
+	VarBoolYaml bool
+)
+
+func Command(_ *cobra.Command, _ []string) error {
+	if len(VarStringAPI) == 0 {
+		return errors.New("missing -api")
+	}
+
+	if len(VarStringDir) == 0 {
+		return errors.New("missing -dir")
+	}
+
+	api, err := parser.Parse(VarStringAPI, "")
+	if err != nil {
+		return err
+	}
+
+	fillAllStructs(api)
+
+	if err := api.Validate(); err != nil {
+		return err
+	}
+	swagger, err := spec2Swagger(api)
+	if err != nil {
+		return err
+	}
+	data, err := json.MarshalIndent(swagger, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	err = pathx.MkdirIfNotExist(VarStringDir)
+	if err != nil {
+		return err
+	}
+
+	filename := VarStringFilename
+	if filename == "" {
+		base := filepath.Base(VarStringAPI)
+		filename = strings.TrimSuffix(base, filepath.Ext(base))
+	}
+
+	if VarBoolYaml {
+		filePath := filepath.Join(VarStringDir, filename+".yaml")
+
+		var jsonObj interface{}
+		if err := yaml.Unmarshal(data, &jsonObj); err != nil {
+			return err
+		}
+
+		data, err := yaml.Marshal(jsonObj)
+		if err != nil {
+			return err
+		}
+		return os.WriteFile(filePath, data, 0644)
+	}
+
+	// generate json swagger file
+	filePath := filepath.Join(VarStringDir, filename+".json")
+	return os.WriteFile(filePath, data, 0644)
+}

tools/goctl/api/swagger/const.go

@@ -0,0 +1,65 @@
+package swagger
+
+const (
+	tagHeader    = "header"
+	tagPath      = "path"
+	tagForm      = "form"
+	tagJson      = "json"
+	defFlag      = "default="
+	enumFlag     = "options="
+	rangeFlag    = "range="
+	exampleFlag  = "example="
+	optionalFlag = "optional"
+
+	paramsInHeader = "header"
+	paramsInPath   = "path"
+	paramsInQuery  = "query"
+	paramsInBody   = "body"
+	paramsInForm   = "formData"
+
+	swaggerTypeInteger = "integer"
+	swaggerTypeNumber  = "number"
+	swaggerTypeString  = "string"
+	swaggerTypeBoolean = "boolean"
+	swaggerTypeArray   = "array"
+	swaggerTypeObject  = "object"
+
+	swaggerVersion  = "2.0"
+	applicationJson = "application/json"
+	applicationForm = "application/x-www-form-urlencoded"
+	schemeHttps     = "https"
+	defaultBasePath = "/"
+)
+
+const (
+	propertyKeyUseDefinitions          = "useDefinitions"
+	propertyKeyExternalDocsDescription = "externalDocsDescription"
+	propertyKeyExternalDocsURL         = "externalDocsURL"
+	propertyKeyTitle                   = "title"
+	propertyKeyTermsOfService          = "termsOfService"
+	propertyKeyDescription             = "description"
+	propertyKeyVersion                 = "version"
+	propertyKeyContactName             = "contactName"
+	propertyKeyContactURL              = "contactURL"
+	propertyKeyContactEmail            = "contactEmail"
+	propertyKeyLicenseName             = "licenseName"
+	propertyKeyLicenseURL              = "licenseURL"
+	propertyKeyProduces                = "produces"
+	propertyKeyConsumes                = "consumes"
+	propertyKeySchemes                 = "schemes"
+	propertyKeyTags                    = "tags"
+	propertyKeySummary                 = "summary"
+	propertyKeyGroup                   = "group"
+	propertyKeyOperationId             = "operationId"
+	propertyKeyDeprecated              = "deprecated"
+	propertyKeyPrefix                  = "prefix"
+	propertyKeyAuthType                = "authType"
+	propertyKeyHost                    = "host"
+	propertyKeyBasePath                = "basePath"
+	propertyKeyWrapCodeMsg             = "wrapCodeMsg"
+	propertyKeyBizCodeEnumDescription  = "bizCodeEnumDescription"
+)
+
+const (
+	defaultValueOfPropertyUseDefinition = false
+)

tools/goctl/api/swagger/contenttype.go

@@ -0,0 +1,25 @@
+package swagger
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/zeromicro/go-zero/tools/goctl/api/spec"
+)
+
+func consumesFromTypeOrDef(ctx Context, method string, tp spec.Type) []string {
+	if strings.EqualFold(method, http.MethodGet) {
+		return []string{}
+	}
+	if tp == nil {
+		return []string{}
+	}
+	structType, ok := tp.(spec.DefineStruct)
+	if !ok {
+		return []string{}
+	}
+	if typeContainsTag(ctx, structType, tagJson) {
+		return []string{applicationJson}
+	}
+	return []string{applicationForm}
+}

tools/goctl/api/swagger/contenttype_test.go

@@ -0,0 +1,68 @@
+package swagger
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/zeromicro/go-zero/tools/goctl/api/spec"
+)
+
+func TestConsumesFromTypeOrDef(t *testing.T) {
+	tests := []struct {
+		name     string
+		method   string
+		tp       spec.Type
+		expected []string
+	}{
+		{
+			name:     "GET method with nil type",
+			method:   http.MethodGet,
+			tp:       nil,
+			expected: []string{},
+		},
+		{
+			name:     "post nil",
+			method:   http.MethodPost,
+			tp:       nil,
+			expected: []string{},
+		},
+		{
+			name:   "json tag",
+			method: http.MethodPost,
+			tp: spec.DefineStruct{
+				Members: []spec.Member{
+					{
+						Tag: `json:"example"`,
+					},
+				},
+			},
+			expected: []string{applicationJson},
+		},
+		{
+			name:   "form tag",
+			method: http.MethodPost,
+			tp: spec.DefineStruct{
+				Members: []spec.Member{
+					{
+						Tag: `form:"example"`,
+					},
+				},
+			},
+			expected: []string{applicationForm},
+		},
+		{
+			name:     "Non struct type",
+			method:   http.MethodPost,
+			tp:       spec.ArrayType{},
+			expected: []string{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := consumesFromTypeOrDef(testingContext(t), tt.method, tt.tp)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}

tools/goctl/api/swagger/context.go

@@ -0,0 +1,28 @@
+package swagger
+
+import (
+	"testing"
+
+	"github.com/zeromicro/go-zero/tools/goctl/api/spec"
+)
+
+type Context struct {
+	UseDefinitions         bool
+	WrapCodeMsg            bool
+	BizCodeEnumDescription string
+}
+
+func testingContext(_ *testing.T) Context {
+	return Context{}
+}
+
+func contextFromApi(info spec.Info) Context {
+	if len(info.Properties) == 0 {
+		return Context{}
+	}
+	return Context{
+		UseDefinitions:         getBoolFromKVOrDefault(info.Properties, propertyKeyUseDefinitions, defaultValueOfPropertyUseDefinition),
+		WrapCodeMsg:            getBoolFromKVOrDefault(info.Properties, propertyKeyWrapCodeMsg, false),
+		BizCodeEnumDescription: getStringFromKVOrDefault(info.Properties, propertyKeyBizCodeEnumDescription, "business code"),
+	}
+}

tools/goctl/api/swagger/definition.go

@@ -0,0 +1,32 @@
+package swagger
+
+import (
+	"github.com/go-openapi/spec"
+	apiSpec "github.com/zeromicro/go-zero/tools/goctl/api/spec"
+)
+
+func definitionsFromTypes(ctx Context, types []apiSpec.Type) spec.Definitions {
+	if !ctx.UseDefinitions {
+		return nil
+	}
+	definitions := make(spec.Definitions)
+	for _, tp := range types {
+		typeName := tp.Name()
+		definitions[typeName] = schemaFromType(ctx, tp)
+	}
+	return definitions
+}
+
+func schemaFromType(ctx Context, tp apiSpec.Type) spec.Schema {
+	p, r := propertiesFromType(ctx, tp)
+	props := spec.SchemaProps{
+		Type:                 typeFromGoType(ctx, tp),
+		Properties:           p,
+		AdditionalProperties: mapFromGoType(ctx, tp),
+		Items:                itemsFromGoType(ctx, tp),
+		Required:             r,
+	}
+	return spec.Schema{
+		SchemaProps: props,
+	}
+}