feat: support third party orm to interact with go-zero (#1286)

* fixes #987

* chore: fix test failure

* chore: add comments

* feat: support third party orm to interact with go-zero

* chore: refactor

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # https://gitee.com/kevwan/static/raw/master/images/sponsor.jpg

.gitignore

@@ -15,6 +15,9 @@
 **/.DS_Store
 **/logs
 
+# for test purpose
+adhoc
+
 # gitlab ci
 .cache
 

ROADMAP.md

@@ -10,13 +10,17 @@ We hope that the items listed below will inspire further engagement from the com
 
 ## 2021 Q3
 - [x] Support `goctl model pg` to support PostgreSQL code generation
-- [ ] Support `goctl mock` command to start a mocking server with given `.api` file
-- [ ] Adapt builtin tracing mechanism to opentracing solutions
+- [x] Adapt builtin tracing mechanism to opentracing solutions
 
 ## 2021 Q4
+- [x] Support `username/password` authentication in ETCD
+- [x] Support `SSL/TLS` in `zRPC`
+- [x] Support `TLS` in redis connections
+
+## 2022
+- [ ] Support `goctl mock` command to start a mocking server with given `.api` file
 - [ ] Add `httpx.Client` with governance, like circuit breaker etc.
 - [ ] Support `goctl doctor` command to report potential issues for given service
 - [ ] Support `context` in redis related methods for timeout and tracing
 - [ ] Support `context` in sql related methods for timeout and tracing
 - [ ] Support `context` in mongodb related methods for timeout and tracing
-- [ ] Support TLS in redis connections

core/discov/accountregistry.go

@@ -0,0 +1,7 @@
+package discov
+
+import "github.com/tal-tech/go-zero/core/discov/internal"
+
+func RegisterAccount(endpoints []string, user, pass string) {
+	internal.AddAccount(endpoints, user, pass)
+}

core/discov/accountregistry_test.go

@@ -0,0 +1,21 @@
+package discov
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/discov/internal"
+	"github.com/tal-tech/go-zero/core/stringx"
+)
+
+func TestRegisterAccount(t *testing.T) {
+	endpoints := []string{
+		"localhost:2379",
+	}
+	user := "foo" + stringx.Rand()
+	RegisterAccount(endpoints, user, "bar")
+	account, ok := internal.GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, user, account.User)
+	assert.Equal(t, "bar", account.Pass)
+}

core/discov/config.go

@@ -6,6 +6,13 @@ import "errors"
 type EtcdConf struct {
 	Hosts []string
 	Key   string
+	User  string `json:",optional"`
+	Pass  string `json:",optional"`
+}
+
+// HasAccount returns if account provided.
+func (c EtcdConf) HasAccount() bool {
+	return len(c.User) > 0 && len(c.Pass) > 0
 }
 
 // Validate validates c.

core/discov/config_test.go

@@ -44,3 +44,39 @@ func TestConfig(t *testing.T) {
 		}
 	}
 }
+
+func TestEtcdConf_HasAccount(t *testing.T) {
+	tests := []struct {
+		EtcdConf
+		hasAccount bool
+	}{
+		{
+			EtcdConf: EtcdConf{
+				Hosts: []string{"any"},
+				Key:   "key",
+			},
+			hasAccount: false,
+		},
+		{
+			EtcdConf: EtcdConf{
+				Hosts: []string{"any"},
+				Key:   "key",
+				User:  "foo",
+			},
+			hasAccount: false,
+		},
+		{
+			EtcdConf: EtcdConf{
+				Hosts: []string{"any"},
+				Key:   "key",
+				User:  "foo",
+				Pass:  "bar",
+			},
+			hasAccount: true,
+		},
+	}
+
+	for _, test := range tests {
+		assert.Equal(t, test.hasAccount, test.EtcdConf.HasAccount())
+	}
+}

core/discov/internal/accountmanager.go

@@ -0,0 +1,31 @@
+package internal
+
+import "sync"
+
+type Account struct {
+	User string
+	Pass string
+}
+
+var (
+	accounts = make(map[string]Account)
+	lock     sync.RWMutex
+)
+
+func AddAccount(endpoints []string, user, pass string) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	accounts[getClusterKey(endpoints)] = Account{
+		User: user,
+		Pass: pass,
+	}
+}
+
+func GetAccount(endpoints []string) (Account, bool) {
+	lock.RLock()
+	defer lock.RUnlock()
+
+	account, ok := accounts[getClusterKey(endpoints)]
+	return account, ok
+}

core/discov/internal/accountmanager_test.go

@@ -0,0 +1,34 @@
+package internal
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/stringx"
+)
+
+func TestAccount(t *testing.T) {
+	endpoints := []string{
+		"192.168.0.2:2379",
+		"192.168.0.3:2379",
+		"192.168.0.4:2379",
+	}
+	username := "foo" + stringx.Rand()
+	password := "bar"
+	anotherPassword := "any"
+
+	_, ok := GetAccount(endpoints)
+	assert.False(t, ok)
+
+	AddAccount(endpoints, username, password)
+	account, ok := GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, username, account.User)
+	assert.Equal(t, password, account.Pass)
+
+	AddAccount(endpoints, username, anotherPassword)
+	account, ok = GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, username, account.User)
+	assert.Equal(t, anotherPassword, account.Pass)
+}

core/discov/internal/registry.go

@@ -37,25 +37,35 @@ func GetRegistry() *Registry {
 
 // GetConn returns an etcd client connection associated with given endpoints.
 func (r *Registry) GetConn(endpoints []string) (EtcdClient, error) {
-	return r.getCluster(endpoints).getClient()
+	c, _ := r.getCluster(endpoints)
+	return c.getClient()
 }
 
 // Monitor monitors the key on given etcd endpoints, notify with the given UpdateListener.
 func (r *Registry) Monitor(endpoints []string, key string, l UpdateListener) error {
-	return r.getCluster(endpoints).monitor(key, l)
+	c, exists := r.getCluster(endpoints)
+	// if exists, the existing values should be updated to the listener.
+	if exists {
+		kvs := c.getCurrent(key)
+		for _, kv := range kvs {
+			l.OnAdd(kv)
+		}
+	}
+
+	return c.monitor(key, l)
 }
 
-func (r *Registry) getCluster(endpoints []string) *cluster {
+func (r *Registry) getCluster(endpoints []string) (c *cluster, exists bool) {
 	clusterKey := getClusterKey(endpoints)
 	r.lock.Lock()
 	defer r.lock.Unlock()
-	c, ok := r.clusters[clusterKey]
-	if !ok {
+	c, exists = r.clusters[clusterKey]
+	if !exists {
 		c = newCluster(endpoints)
 		r.clusters[clusterKey] = c
 	}
 
-	return c
+	return
 }
 
 type cluster struct {
@@ -94,6 +104,21 @@ func (c *cluster) getClient() (EtcdClient, error) {
 	return val.(EtcdClient), nil
 }
 
+func (c *cluster) getCurrent(key string) []KV {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+
+	var kvs []KV
+	for k, v := range c.values[key] {
+		kvs = append(kvs, KV{
+			Key: k,
+			Val: v,
+		})
+	}
+
+	return kvs
+}
+
 func (c *cluster) handleChanges(key string, kvs []KV) {
 	var add []KV
 	var remove []KV
@@ -197,14 +222,12 @@ func (c *cluster) load(cli EtcdClient, key string) {
 	}
 
 	var kvs []KV
-	c.lock.Lock()
 	for _, ev := range resp.Kvs {
 		kvs = append(kvs, KV{
 			Key: string(ev.Key),
 			Val: string(ev.Value),
 		})
 	}
-	c.lock.Unlock()
 
 	c.handleChanges(key, kvs)
 }
@@ -302,14 +325,20 @@ func (c *cluster) watchConnState(cli EtcdClient) {
 
 // DialClient dials an etcd cluster with given endpoints.
 func DialClient(endpoints []string) (EtcdClient, error) {
-	return clientv3.New(clientv3.Config{
+	cfg := clientv3.Config{
 		Endpoints:            endpoints,
 		AutoSyncInterval:     autoSyncInterval,
 		DialTimeout:          DialTimeout,
 		DialKeepAliveTime:    dialKeepAliveTime,
 		DialKeepAliveTimeout: DialTimeout,
 		RejectOldCluster:     true,
-	})
+	}
+	if account, ok := GetAccount(endpoints); ok {
+		cfg.Username = account.User
+		cfg.Password = account.Pass
+	}
+
+	return clientv3.New(cfg)
 }
 
 func getClusterKey(endpoints []string) string {

core/discov/internal/registry_test.go

@@ -33,9 +33,10 @@ func setMockClient(cli EtcdClient) func() {
 }
 
 func TestGetCluster(t *testing.T) {
-	c1 := GetRegistry().getCluster([]string{"first"})
-	c2 := GetRegistry().getCluster([]string{"second"})
-	c3 := GetRegistry().getCluster([]string{"first"})
+	AddAccount([]string{"first"}, "foo", "bar")
+	c1, _ := GetRegistry().getCluster([]string{"first"})
+	c2, _ := GetRegistry().getCluster([]string{"second"})
+	c3, _ := GetRegistry().getCluster([]string{"first"})
 	assert.Equal(t, c1, c3)
 	assert.NotEqual(t, c1, c2)
 }

core/discov/publisher.go

@@ -11,8 +11,8 @@ import (
 )
 
 type (
-	// PublisherOption defines the method to customize a Publisher.
-	PublisherOption func(client *Publisher)
+	// PubOption defines the method to customize a Publisher.
+	PubOption func(client *Publisher)
 
 	// A Publisher can be used to publish the value to an etcd cluster on the given key.
 	Publisher struct {
@@ -32,7 +32,7 @@ type (
 // endpoints is the hosts of the etcd cluster.
 // key:value are a pair to be published.
 // opts are used to customize the Publisher.
-func NewPublisher(endpoints []string, key, value string, opts ...PublisherOption) *Publisher {
+func NewPublisher(endpoints []string, key, value string, opts ...PubOption) *Publisher {
 	publisher := &Publisher{
 		endpoints:  endpoints,
 		key:        key,
@@ -145,8 +145,15 @@ func (p *Publisher) revoke(cli internal.EtcdClient) {
 	}
 }
 
+// WithPubEtcdAccount provides the etcd username/password.
+func WithPubEtcdAccount(user, pass string) PubOption {
+	return func(pub *Publisher) {
+		internal.AddAccount(pub.endpoints, user, pass)
+	}
+}
+
 // WithId customizes a Publisher with the id.
-func WithId(id int64) PublisherOption {
+func WithId(id int64) PubOption {
 	return func(publisher *Publisher) {
 		publisher.id = id
 	}

core/discov/publisher_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/tal-tech/go-zero/core/discov/internal"
 	"github.com/tal-tech/go-zero/core/lang"
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/stringx"
 	clientv3 "go.etcd.io/etcd/client/v3"
 )
 
@@ -30,7 +31,8 @@ func TestPublisher_register(t *testing.T) {
 		ID: id,
 	}, nil)
 	cli.EXPECT().Put(gomock.Any(), makeEtcdKey("thekey", id), "thevalue", gomock.Any())
-	pub := NewPublisher(nil, "thekey", "thevalue")
+	pub := NewPublisher(nil, "thekey", "thevalue",
+		WithPubEtcdAccount(stringx.Rand(), "bar"))
 	_, err := pub.register(cli)
 	assert.Nil(t, err)
 }

core/discov/subscriber.go

@@ -9,16 +9,14 @@ import (
 )
 
 type (
-	subOptions struct {
-		exclusive bool
-	}
-
 	// SubOption defines the method to customize a Subscriber.
-	SubOption func(opts *subOptions)
+	SubOption func(sub *Subscriber)
 
 	// A Subscriber is used to subscribe the given key on a etcd cluster.
 	Subscriber struct {
-		items *container
+		endpoints []string
+		exclusive bool
+		items     *container
 	}
 )
 
@@ -27,14 +25,14 @@ type (
 // key is the key to subscribe.
 // opts are used to customize the Subscriber.
 func NewSubscriber(endpoints []string, key string, opts ...SubOption) (*Subscriber, error) {
-	var subOpts subOptions
-	for _, opt := range opts {
-		opt(&subOpts)
-	}
-
 	sub := &Subscriber{
-		items: newContainer(subOpts.exclusive),
+		endpoints: endpoints,
 	}
+	for _, opt := range opts {
+		opt(sub)
+	}
+	sub.items = newContainer(sub.exclusive)
+
 	if err := internal.GetRegistry().Monitor(endpoints, key, sub.items); err != nil {
 		return nil, err
 	}
@@ -55,8 +53,14 @@ func (s *Subscriber) Values() []string {
 // Exclusive means that key value can only be 1:1,
 // which means later added value will remove the keys associated with the same value previously.
 func Exclusive() SubOption {
-	return func(opts *subOptions) {
-		opts.exclusive = true
+	return func(sub *Subscriber) {
+		sub.exclusive = true
+	}
+}
+
+func WithSubEtcdAccount(user, pass string) SubOption {
+	return func(sub *Subscriber) {
+		internal.AddAccount(sub.endpoints, user, pass)
 	}
 }
 

core/discov/subscriber_test.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/tal-tech/go-zero/core/discov/internal"
+	"github.com/tal-tech/go-zero/core/stringx"
 )
 
 const (
@@ -201,11 +202,9 @@ func TestContainer(t *testing.T) {
 }
 
 func TestSubscriber(t *testing.T) {
-	var opt subOptions
-	Exclusive()(&opt)
-
 	sub := new(Subscriber)
-	sub.items = newContainer(opt.exclusive)
+	Exclusive()(sub)
+	sub.items = newContainer(sub.exclusive)
 	var count int32
 	sub.AddListener(func() {
 		atomic.AddInt32(&count, 1)
@@ -214,3 +213,15 @@ func TestSubscriber(t *testing.T) {
 	assert.Empty(t, sub.Values())
 	assert.Equal(t, int32(1), atomic.LoadInt32(&count))
 }
+
+func TestWithSubEtcdAccount(t *testing.T) {
+	endpoints := []string{"localhost:2379"}
+	user := stringx.Rand()
+	WithSubEtcdAccount(user, "bar")(&Subscriber{
+		endpoints: endpoints,
+	})
+	account, ok := internal.GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, user, account.User)
+	assert.Equal(t, "bar", account.Pass)
+}

core/hash/consistenthash_test.go

@@ -74,12 +74,12 @@ func TestConsistentHashIncrementalTransfer(t *testing.T) {
 		laterCh := create()
 		laterCh.AddWithWeight(node, 10*(i+1))
 
-		for i := 0; i < requestSize; i++ {
-			key, ok := laterCh.Get(requestSize + i)
+		for j := 0; j < requestSize; j++ {
+			key, ok := laterCh.Get(requestSize + j)
 			assert.True(t, ok)
 			assert.NotNil(t, key)
 			value := key.(string)
-			assert.True(t, value == keys[i] || value == node)
+			assert.True(t, value == keys[j] || value == node)
 		}
 	}
 }

core/jsontype/time_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/globalsign/mgo/bson"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -106,3 +107,20 @@ func TestMilliTime_UnmarshalJSON(t *testing.T) {
 		})
 	}
 }
+
+func TestUnmarshalWithError(t *testing.T) {
+	var mt MilliTime
+	assert.NotNil(t, mt.UnmarshalJSON([]byte("hello")))
+}
+
+func TestSetBSON(t *testing.T) {
+	data, err := bson.Marshal(time.Now())
+	assert.Nil(t, err)
+
+	var raw bson.Raw
+	assert.Nil(t, bson.Unmarshal(data, &raw))
+
+	var mt MilliTime
+	assert.Nil(t, mt.SetBSON(raw))
+	assert.NotNil(t, mt.SetBSON(bson.Raw{}))
+}

core/logx/limitedexecutor_test.go

@@ -0,0 +1,62 @@
+package logx
+
+import (
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/timex"
+)
+
+func TestLimitedExecutor_logOrDiscard(t *testing.T) {
+	tests := []struct {
+		name      string
+		threshold time.Duration
+		lastTime  time.Duration
+		discarded uint32
+		executed  bool
+	}{
+		{
+			name:     "nil executor",
+			executed: true,
+		},
+		{
+			name:      "regular",
+			threshold: time.Hour,
+			lastTime:  timex.Now(),
+			discarded: 10,
+			executed:  false,
+		},
+		{
+			name:      "slow",
+			threshold: time.Duration(1),
+			lastTime:  -1000,
+			discarded: 10,
+			executed:  true,
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+
+			executor := newLimitedExecutor(0)
+			executor.threshold = test.threshold
+			executor.discarded = test.discarded
+			executor.lastTime.Set(test.lastTime)
+
+			var run int32
+			executor.logOrDiscard(func() {
+				atomic.AddInt32(&run, 1)
+			})
+			if test.executed {
+				assert.Equal(t, int32(1), atomic.LoadInt32(&run))
+			} else {
+				assert.Equal(t, int32(0), atomic.LoadInt32(&run))
+				assert.Equal(t, test.discarded+1, atomic.LoadUint32(&executor.discarded))
+			}
+		})
+	}
+}

core/logx/logs.go

@@ -217,7 +217,7 @@ func ErrorCaller(callDepth int, v ...interface{}) {
 
 // ErrorCallerf writes v with context in format into error log.
 func ErrorCallerf(callDepth int, format string, v ...interface{}) {
-	errorTextSync(fmt.Sprintf(format, v...), callDepth+callerInnerDepth)
+	errorTextSync(fmt.Errorf(format, v...).Error(), callDepth+callerInnerDepth)
 }
 
 // Errorf writes v with format into error log.

core/logx/logs_test.go

@@ -2,6 +2,7 @@ package logx
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -242,6 +243,16 @@ func TestSetLevelWithDuration(t *testing.T) {
 	assert.Equal(t, 0, writer.builder.Len())
 }
 
+func TestErrorfWithWrappedError(t *testing.T) {
+	SetLevel(ErrorLevel)
+	const message = "there"
+	writer := new(mockWriter)
+	errorLog = writer
+	atomic.StoreUint32(&initialized, 1)
+	Errorf("hello %w", errors.New(message))
+	assert.True(t, strings.Contains(writer.builder.String(), "hello there"))
+}
+
 func TestMustNil(t *testing.T) {
 	Must(nil)
 }

core/mapping/unmarshaler.go

@@ -207,6 +207,8 @@ func (u *Unmarshaler) processFieldNotFromString(field reflect.StructField, value
 	switch {
 	case valueKind == reflect.Map && typeKind == reflect.Struct:
 		return u.processFieldStruct(field, value, mapValue, fullName)
+	case valueKind == reflect.Map && typeKind == reflect.Map:
+		return u.fillMap(field, value, mapValue)
 	case valueKind == reflect.String && typeKind == reflect.Slice:
 		return u.fillSliceFromString(fieldType, value, mapValue)
 	case valueKind == reflect.String && derefedFieldType == durationType:
@@ -584,6 +586,8 @@ func (u *Unmarshaler) generateMap(keyType, elemType reflect.Type, mapValue inter
 			targetValue.SetMapIndex(key, innerValue)
 		default:
 			switch v := keythData.(type) {
+			case bool:
+				targetValue.SetMapIndex(key, reflect.ValueOf(v))
 			case string:
 				targetValue.SetMapIndex(key, reflect.ValueOf(v))
 			case json.Number:

core/mapping/utils_test.go

@@ -209,6 +209,12 @@ func TestRepr(t *testing.T) {
 			newMockPtr(),
 			"mockptr",
 		},
+		{
+			&mockOpacity{
+				val: 1,
+			},
+			"{1}",
+		},
 		{
 			true,
 			"true",

core/mapping/yamlunmarshaler_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"k8s.io/utils/io"
 )
 
 func TestUnmarshalYamlBytes(t *testing.T) {
@@ -18,6 +19,22 @@ func TestUnmarshalYamlBytes(t *testing.T) {
 	assert.Equal(t, "liao", c.Name)
 }
 
+func TestUnmarshalYamlBytesErrorInput(t *testing.T) {
+	var c struct {
+		Name string
+	}
+	content := []byte(`liao`)
+	assert.NotNil(t, UnmarshalYamlBytes(content, &c))
+}
+
+func TestUnmarshalYamlBytesEmptyInput(t *testing.T) {
+	var c struct {
+		Name string
+	}
+	content := []byte(``)
+	assert.NotNil(t, UnmarshalYamlBytes(content, &c))
+}
+
 func TestUnmarshalYamlBytesOptional(t *testing.T) {
 	var c struct {
 		Name string
@@ -918,3 +935,82 @@ func TestUnmarshalYamlReaderError(t *testing.T) {
 	err := UnmarshalYamlReader(reader, &v)
 	assert.NotNil(t, err)
 }
+
+func TestUnmarshalYamlBadReader(t *testing.T) {
+	var v struct {
+		Any string
+	}
+
+	err := UnmarshalYamlReader(new(badReader), &v)
+	assert.NotNil(t, err)
+}
+
+func TestUnmarshalYamlMapBool(t *testing.T) {
+	text := `machine:
+  node1: true
+  node2: true
+  node3: true
+`
+	var v struct {
+		Machine map[string]bool `json:"machine,optional"`
+	}
+	reader := strings.NewReader(text)
+	assert.Nil(t, UnmarshalYamlReader(reader, &v))
+	assert.True(t, v.Machine["node1"])
+	assert.True(t, v.Machine["node2"])
+	assert.True(t, v.Machine["node3"])
+}
+
+func TestUnmarshalYamlMapInt(t *testing.T) {
+	text := `machine:
+  node1: 1
+  node2: 2
+  node3: 3
+`
+	var v struct {
+		Machine map[string]int `json:"machine,optional"`
+	}
+	reader := strings.NewReader(text)
+	assert.Nil(t, UnmarshalYamlReader(reader, &v))
+	assert.Equal(t, 1, v.Machine["node1"])
+	assert.Equal(t, 2, v.Machine["node2"])
+	assert.Equal(t, 3, v.Machine["node3"])
+}
+
+func TestUnmarshalYamlMapByte(t *testing.T) {
+	text := `machine:
+  node1: 1
+  node2: 2
+  node3: 3
+`
+	var v struct {
+		Machine map[string]byte `json:"machine,optional"`
+	}
+	reader := strings.NewReader(text)
+	assert.Nil(t, UnmarshalYamlReader(reader, &v))
+	assert.Equal(t, byte(1), v.Machine["node1"])
+	assert.Equal(t, byte(2), v.Machine["node2"])
+	assert.Equal(t, byte(3), v.Machine["node3"])
+}
+
+func TestUnmarshalYamlMapRune(t *testing.T) {
+	text := `machine:
+  node1: 1
+  node2: 2
+  node3: 3
+`
+	var v struct {
+		Machine map[string]rune `json:"machine,optional"`
+	}
+	reader := strings.NewReader(text)
+	assert.Nil(t, UnmarshalYamlReader(reader, &v))
+	assert.Equal(t, rune(1), v.Machine["node1"])
+	assert.Equal(t, rune(2), v.Machine["node2"])
+	assert.Equal(t, rune(3), v.Machine["node3"])
+}
+
+type badReader struct{}
+
+func (b *badReader) Read(p []byte) (n int, err error) {
+	return 0, io.ErrLimitReached
+}

core/prometheus/agent.go

@@ -23,11 +23,11 @@ func Enabled() bool {
 
 // StartAgent starts a prometheus agent.
 func StartAgent(c Config) {
-	once.Do(func() {
-		if len(c.Host) == 0 {
-			return
-		}
+	if len(c.Host) == 0 {
+		return
+	}
 
+	once.Do(func() {
 		enabled.Set(true)
 		threading.GoSafe(func() {
 			http.Handle(c.Path, promhttp.Handler())

core/service/servicegroup.go

@@ -26,6 +26,7 @@ type (
 	}
 
 	// A ServiceGroup is a group of services.
+	// Attention: the starting order of the added services is not guaranteed.
 	ServiceGroup struct {
 		services []Service
 		stopOnce func()
@@ -41,7 +42,8 @@ func NewServiceGroup() *ServiceGroup {
 
 // Add adds service into sg.
 func (sg *ServiceGroup) Add(service Service) {
-	sg.services = append(sg.services, service)
+	// push front, stop with reverse order.
+	sg.services = append([]Service{service}, sg.services...)
 }
 
 // Start starts the ServiceGroup.

core/stores/builder/builder.go

@@ -0,0 +1,63 @@
+package builder
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+const dbTag = "db"
+
+// RawFieldNames converts golang struct field into slice string.
+func RawFieldNames(in interface{}, postgresSql ...bool) []string {
+	out := make([]string, 0)
+	v := reflect.ValueOf(in)
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	var pg bool
+	if len(postgresSql) > 0 {
+		pg = postgresSql[0]
+	}
+
+	// we only accept structs
+	if v.Kind() != reflect.Struct {
+		panic(fmt.Errorf("ToMap only accepts structs; got %T", v))
+	}
+
+	typ := v.Type()
+	for i := 0; i < v.NumField(); i++ {
+		// gets us a StructField
+		fi := typ.Field(i)
+		if tagv := fi.Tag.Get(dbTag); tagv != "" {
+			if pg {
+				out = append(out, tagv)
+			} else {
+				out = append(out, fmt.Sprintf("`%s`", tagv))
+			}
+		} else {
+			if pg {
+				out = append(out, fi.Name)
+			} else {
+				out = append(out, fmt.Sprintf("`%s`", fi.Name))
+			}
+		}
+	}
+
+	return out
+}
+
+// PostgreSqlJoin concatenates the given elements into a string.
+func PostgreSqlJoin(elems []string) string {
+	b := new(strings.Builder)
+	for index, e := range elems {
+		b.WriteString(fmt.Sprintf("%s = $%d, ", e, index+2))
+	}
+
+	if b.Len() == 0 {
+		return b.String()
+	}
+
+	return b.String()[0 : b.Len()-2]
+}

core/stores/builder/builder_test.go

@@ -0,0 +1,24 @@
+package builder
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type mockedUser struct {
+	ID       string `db:"id" json:"id,omitempty"`
+	UserName string `db:"user_name" json:"userName,omitempty"`
+	Sex      int    `db:"sex" json:"sex,omitempty"`
+	UUID     string `db:"uuid" uuid:"uuid,omitempty"`
+	Age      int    `db:"age" json:"age"`
+}
+
+func TestFieldNames(t *testing.T) {
+	t.Run("new", func(t *testing.T) {
+		var u mockedUser
+		out := RawFieldNames(&u)
+		expected := []string{"`id`", "`user_name`", "`sex`", "`uuid`", "`age`"}
+		assert.Equal(t, expected, out)
+	})
+}

core/stores/kv/store_test.go

@@ -667,10 +667,12 @@ func TestRedis_HyperLogLog(t *testing.T) {
 	assert.NotNil(t, err)
 
 	runOnCluster(t, func(cluster Store) {
-		_, err := cluster.Pfadd("key")
-		assert.NotNil(t, err)
-		_, err = cluster.Pfcount("key")
-		assert.NotNil(t, err)
+		ok, err := cluster.Pfadd("key", "value")
+		assert.Nil(t, err)
+		assert.True(t, ok)
+		val, err := cluster.Pfcount("key")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(1), val)
 	})
 }
 

core/stores/mongo/collection.go

@@ -11,7 +11,7 @@ import (
 	"github.com/tal-tech/go-zero/core/timex"
 )
 
-const slowThreshold = time.Millisecond * 500
+const defaultSlowThreshold = time.Millisecond * 500
 
 // ErrNotFound is an alias of mgo.ErrNotFound.
 var ErrNotFound = mgo.ErrNotFound
@@ -203,7 +203,7 @@ func (c *decoratedCollection) logDuration(method string, duration time.Duration,
 	if e != nil {
 		logx.Error(err)
 	} else if err != nil {
-		if duration > slowThreshold {
+		if duration > slowThreshold.Load() {
 			logx.WithDuration(duration).Slowf("[MONGO] mongo(%s) - slowcall - %s - fail(%s) - %s",
 				c.name, method, err.Error(), string(content))
 		} else {
@@ -211,7 +211,7 @@ func (c *decoratedCollection) logDuration(method string, duration time.Duration,
 				c.name, method, err.Error(), string(content))
 		}
 	} else {
-		if duration > slowThreshold {
+		if duration > slowThreshold.Load() {
 			logx.WithDuration(duration).Slowf("[MONGO] mongo(%s) - slowcall - %s - ok - %s",
 				c.name, method, string(content))
 		} else {

core/stores/mongo/model.go

@@ -8,23 +8,14 @@ import (
 	"github.com/tal-tech/go-zero/core/breaker"
 )
 
-type (
-	options struct {
-		timeout time.Duration
-	}
-
-	// Option defines the method to customize a mongo model.
-	Option func(opts *options)
-
-	// A Model is a mongo model.
-	Model struct {
-		session    *concurrentSession
-		db         *mgo.Database
-		collection string
-		brk        breaker.Breaker
-		opts       []Option
-	}
-)
+// A Model is a mongo model.
+type Model struct {
+	session    *concurrentSession
+	db         *mgo.Database
+	collection string
+	brk        breaker.Breaker
+	opts       []Option
+}
 
 // MustNewModel returns a Model, exits on errors.
 func MustNewModel(url, collection string, opts ...Option) *Model {

core/stores/mongo/model_test.go

@@ -0,0 +1,14 @@
+package mongo
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWithTimeout(t *testing.T) {
+	o := defaultOptions()
+	WithTimeout(time.Second)(o)
+	assert.Equal(t, time.Second, o.timeout)
+}

core/stores/mongo/options.go

@@ -0,0 +1,29 @@
+package mongo
+
+import (
+	"time"
+
+	"github.com/tal-tech/go-zero/core/syncx"
+)
+
+var slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+
+type (
+	options struct {
+		timeout time.Duration
+	}
+
+	// Option defines the method to customize a mongo model.
+	Option func(opts *options)
+)
+
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
+
+func defaultOptions() *options {
+	return &options{
+		timeout: defaultTimeout,
+	}
+}

core/stores/mongo/options_test.go

@@ -0,0 +1,14 @@
+package mongo
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}

core/stores/mongo/sessionmanager.go

@@ -57,9 +57,7 @@ func (cs *concurrentSession) putSession(session *mgo.Session) {
 }
 
 func (cs *concurrentSession) takeSession(opts ...Option) (*mgo.Session, error) {
-	o := &options{
-		timeout: defaultTimeout,
-	}
+	o := defaultOptions()
 	for _, opt := range opts {
 		opt(o)
 	}

core/stores/redis/conf.go

@@ -17,7 +17,7 @@ type (
 		Host string
 		Type string `json:",default=node,options=node|cluster"`
 		Pass string `json:",optional"`
-		Tls  bool   `json:",default=false,options=true|false"`
+		Tls  bool   `json:",optional"`
 	}
 
 	// A RedisKeyConf is a redis config with key.

core/stores/redis/process.go

@@ -9,13 +9,13 @@ import (
 	"github.com/tal-tech/go-zero/core/timex"
 )
 
-func process(proc func(red.Cmder) error) func(red.Cmder) error {
+func checkDuration(proc func(red.Cmder) error) func(red.Cmder) error {
 	return func(cmd red.Cmder) error {
 		start := timex.Now()
 
 		defer func() {
 			duration := timex.Since(start)
-			if duration > slowThreshold {
+			if duration > slowThreshold.Load() {
 				var buf strings.Builder
 				for i, arg := range cmd.Args() {
 					if i > 0 {

core/stores/redis/redis.go

@@ -9,6 +9,7 @@ import (
 	red "github.com/go-redis/redis"
 	"github.com/tal-tech/go-zero/core/breaker"
 	"github.com/tal-tech/go-zero/core/mapping"
+	"github.com/tal-tech/go-zero/core/syncx"
 )
 
 const (
@@ -21,12 +22,14 @@ const (
 
 	blockingQueryTimeout = 5 * time.Second
 	readWriteTimeout     = 2 * time.Second
-
-	slowThreshold = time.Millisecond * 100
+	defaultSlowThreshold = time.Millisecond * 100
 )
 
-// ErrNilNode is an error that indicates a nil redis node.
-var ErrNilNode = errors.New("nil redis node")
+var (
+	// ErrNilNode is an error that indicates a nil redis node.
+	ErrNilNode    = errors.New("nil redis node")
+	slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+)
 
 type (
 	// Option defines the method to customize a Redis.
@@ -1758,6 +1761,11 @@ func Cluster() Option {
 	}
 }
 
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
+
 // WithPass customizes the given Redis with given password.
 func WithPass(pass string) Option {
 	return func(r *Redis) {

core/stores/redis/redis_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/alicebob/miniredis/v2"
 	red "github.com/go-redis/redis"
 	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/stringx"
 )
 
 func TestRedis_Exists(t *testing.T) {
@@ -186,7 +187,7 @@ func TestRedis_Hscan(t *testing.T) {
 		key := "hash:test"
 		fieldsAndValues := make(map[string]string)
 		for i := 0; i < 1550; i++ {
-			fieldsAndValues["filed_"+strconv.Itoa(i)] = randomStr(i)
+			fieldsAndValues["filed_"+strconv.Itoa(i)] = stringx.Randn(i)
 		}
 		err := client.Hmset(key, fieldsAndValues)
 		assert.Nil(t, err)
@@ -256,13 +257,24 @@ func TestRedis_Keys(t *testing.T) {
 func TestRedis_HyperLogLog(t *testing.T) {
 	runOnRedis(t, func(client *Redis) {
 		client.Ping()
-		r := New(client.Addr, badType())
-		_, err := r.Pfadd("key1")
-		assert.NotNil(t, err)
-		_, err = r.Pfcount("*")
-		assert.NotNil(t, err)
-		err = r.Pfmerge("*")
-		assert.NotNil(t, err)
+		r := New(client.Addr)
+		ok, err := r.Pfadd("key1", "val1")
+		assert.Nil(t, err)
+		assert.True(t, ok)
+		val, err := r.Pfcount("key1")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(1), val)
+		ok, err = r.Pfadd("key2", "val2")
+		assert.Nil(t, err)
+		assert.True(t, ok)
+		val, err = r.Pfcount("key2")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(1), val)
+		err = r.Pfmerge("key1", "key2")
+		assert.Nil(t, err)
+		val, err = r.Pfcount("key1")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(2), val)
 	})
 }
 
@@ -539,7 +551,7 @@ func TestRedis_Sscan(t *testing.T) {
 		key := "list"
 		var list []string
 		for i := 0; i < 1550; i++ {
-			list = append(list, randomStr(i))
+			list = append(list, stringx.Randn(i))
 		}
 		lens, err := client.Sadd(key, list)
 		assert.Nil(t, err)
@@ -1073,6 +1085,12 @@ func TestRedisGeo(t *testing.T) {
 	})
 }
 
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}
+
 func TestRedis_WithPass(t *testing.T) {
 	runOnRedis(t, func(client *Redis) {
 		err := New(client.Addr, WithPass("any")).Ping()

core/stores/redis/redisclientmanager.go

@@ -32,7 +32,7 @@ func getClient(r *Redis) (*red.Client, error) {
 			MinIdleConns: idleConns,
 			TLSConfig:    tlsConfig,
 		})
-		store.WrapProcess(process)
+		store.WrapProcess(checkDuration)
 		return store, nil
 	})
 	if err != nil {

core/stores/redis/redisclustermanager.go

@@ -25,7 +25,7 @@ func getCluster(r *Redis) (*red.ClusterClient, error) {
 			MinIdleConns: idleConns,
 			TLSConfig:    tlsConfig,
 		})
-		store.WrapProcess(process)
+		store.WrapProcess(checkDuration)
 
 		return store, nil
 	})

core/stores/redis/redislock.go

@@ -8,10 +8,10 @@ import (
 
 	red "github.com/go-redis/redis"
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/stringx"
 )
 
 const (
-	letters     = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 	lockCommand = `if redis.call("GET", KEYS[1]) == ARGV[1] then
     redis.call("SET", KEYS[1], ARGV[1], "PX", ARGV[2])
     return "OK"
@@ -45,7 +45,7 @@ func NewRedisLock(store *Redis, key string) *RedisLock {
 	return &RedisLock{
 		store: store,
 		key:   key,
-		id:    randomStr(randomLen),
+		id:    stringx.Randn(randomLen),
 	}
 }
 
@@ -92,11 +92,3 @@ func (rl *RedisLock) Release() (bool, error) {
 func (rl *RedisLock) SetExpire(seconds int) {
 	atomic.StoreUint32(&rl.seconds, uint32(seconds))
 }
-
-func randomStr(n int) string {
-	b := make([]byte, n)
-	for i := range b {
-		b[i] = letters[rand.Intn(len(letters))]
-	}
-	return string(b)
-}

core/stores/sqlx/stmt.go

@@ -5,10 +5,18 @@ import (
 	"time"
 
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/syncx"
 	"github.com/tal-tech/go-zero/core/timex"
 )
 
-const slowThreshold = time.Millisecond * 500
+const defaultSlowThreshold = time.Millisecond * 500
+
+var slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
 
 func exec(conn sessionConn, q string, args ...interface{}) (sql.Result, error) {
 	stmt, err := format(q, args...)
@@ -19,7 +27,7 @@ func exec(conn sessionConn, q string, args ...interface{}) (sql.Result, error) {
 	startTime := timex.Now()
 	result, err := conn.Exec(q, args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] exec: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql exec: %s", stmt)
@@ -40,7 +48,7 @@ func execStmt(conn stmtConn, q string, args ...interface{}) (sql.Result, error)
 	startTime := timex.Now()
 	result, err := conn.Exec(args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] execStmt: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql execStmt: %s", stmt)
@@ -61,7 +69,7 @@ func query(conn sessionConn, scanner func(*sql.Rows) error, q string, args ...in
 	startTime := timex.Now()
 	rows, err := conn.Query(q, args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] query: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql query: %s", stmt)
@@ -84,7 +92,7 @@ func queryStmt(conn stmtConn, scanner func(*sql.Rows) error, q string, args ...i
 	startTime := timex.Now()
 	rows, err := conn.Query(args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] queryStmt: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql queryStmt: %s", stmt)

core/stores/sqlx/stmt_test.go

@@ -171,6 +171,12 @@ func TestStmt_query(t *testing.T) {
 	}
 }
 
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}
+
 type mockedSessionConn struct {
 	lastInsertId int64
 	rowsAffected int64
@@ -180,7 +186,7 @@ type mockedSessionConn struct {
 
 func (m *mockedSessionConn) Exec(query string, args ...interface{}) (sql.Result, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 	return mockedResult{
 		lastInsertId: m.lastInsertId,
@@ -190,7 +196,7 @@ func (m *mockedSessionConn) Exec(query string, args ...interface{}) (sql.Result,
 
 func (m *mockedSessionConn) Query(query string, args ...interface{}) (*sql.Rows, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 
 	err := errMockedPlaceholder
@@ -209,7 +215,7 @@ type mockedStmtConn struct {
 
 func (m *mockedStmtConn) Exec(args ...interface{}) (sql.Result, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 	return mockedResult{
 		lastInsertId: m.lastInsertId,
@@ -219,7 +225,7 @@ func (m *mockedStmtConn) Exec(args ...interface{}) (sql.Result, error) {
 
 func (m *mockedStmtConn) Query(args ...interface{}) (*sql.Rows, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 
 	err := errMockedPlaceholder

core/stores/sqlx/tx.go

@@ -19,6 +19,12 @@ type (
 	}
 )
 
+// NewSessionFromTx returns a Session with the given sql.Tx.
+// Use it with caution, it's provided for other ORM to interact with.
+func NewSessionFromTx(tx *sql.Tx) Session {
+	return txSession{Tx: tx}
+}
+
 func (t txSession) Exec(q string, args ...interface{}) (sql.Result, error) {
 	return exec(t.Tx, q, args...)
 }

core/timex/ticker_test.go

@@ -41,3 +41,10 @@ func TestFakeTicker(t *testing.T) {
 	assert.Nil(t, ticker.Wait(time.Second))
 	assert.Equal(t, int32(total), atomic.LoadInt32(&count))
 }
+
+func TestFakeTickerTimeout(t *testing.T) {
+	ticker := NewFakeTicker()
+	defer ticker.Stop()
+
+	assert.NotNil(t, ticker.Wait(time.Millisecond))
+}

core/trace/agent.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"sync"
 
+	"github.com/tal-tech/go-zero/core/lang"
 	"github.com/tal-tech/go-zero/core/logx"
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/exporters/jaeger"
@@ -19,17 +20,31 @@ const (
 	kindZipkin = "zipkin"
 )
 
-var once sync.Once
+var (
+	agents = make(map[string]lang.PlaceholderType)
+	lock   sync.Mutex
+)
 
 // StartAgent starts a opentelemetry agent.
 func StartAgent(c Config) {
-	once.Do(func() {
-		startAgent(c)
-	})
+	lock.Lock()
+	defer lock.Unlock()
+
+	_, ok := agents[c.Endpoint]
+	if ok {
+		return
+	}
+
+	// if error happens, let later calls run.
+	if err := startAgent(c); err != nil {
+		return
+	}
+
+	agents[c.Endpoint] = lang.Placeholder
 }
 
 func createExporter(c Config) (sdktrace.SpanExporter, error) {
-	// Just support jaeger now, more for later
+	// Just support jaeger and zipkin now, more for later
 	switch c.Batcher {
 	case kindJaeger:
 		return jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(c.Endpoint)))
@@ -40,7 +55,7 @@ func createExporter(c Config) (sdktrace.SpanExporter, error) {
 	}
 }
 
-func startAgent(c Config) {
+func startAgent(c Config) error {
 	opts := []sdktrace.TracerProviderOption{
 		// Set the sampling rate based on the parent span to 100%
 		sdktrace.WithSampler(sdktrace.ParentBased(sdktrace.TraceIDRatioBased(c.Sampler))),
@@ -52,7 +67,7 @@ func startAgent(c Config) {
 		exp, err := createExporter(c)
 		if err != nil {
 			logx.Error(err)
-			return
+			return err
 		}
 
 		// Always be sure to batch in production.
@@ -66,4 +81,6 @@ func startAgent(c Config) {
 	otel.SetErrorHandler(otel.ErrorHandlerFunc(func(err error) {
 		logx.Errorf("[otel] error: %v", err)
 	}))
+
+	return nil
 }

core/trace/agent_test.go

@@ -0,0 +1,54 @@
+package trace
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/logx"
+)
+
+func TestStartAgent(t *testing.T) {
+	logx.Disable()
+
+	const (
+		endpoint1 = "localhost:1234"
+		endpoint2 = "remotehost:1234"
+		endpoint3 = "localhost:1235"
+	)
+	c1 := Config{
+		Name: "foo",
+	}
+	c2 := Config{
+		Name:     "bar",
+		Endpoint: endpoint1,
+		Batcher:  kindJaeger,
+	}
+	c3 := Config{
+		Name:     "any",
+		Endpoint: endpoint2,
+		Batcher:  kindZipkin,
+	}
+	c4 := Config{
+		Name:     "bla",
+		Endpoint: endpoint3,
+		Batcher:  "otlp",
+	}
+
+	StartAgent(c1)
+	StartAgent(c1)
+	StartAgent(c2)
+	StartAgent(c3)
+	StartAgent(c4)
+
+	lock.Lock()
+	defer lock.Unlock()
+
+	// because remotehost cannot be resolved
+	assert.Equal(t, 2, len(agents))
+	_, ok := agents[""]
+	assert.True(t, ok)
+	_, ok = agents[endpoint1]
+	assert.True(t, ok)
+	_, ok = agents[endpoint2]
+	assert.False(t, ok)
+}

core/trace/attributes.go

@@ -34,7 +34,7 @@ var (
 	RPCMessageTypeReceived = RPCMessageTypeKey.String("RECEIVED")
 )
 
-// StatusCodeAttr returns a attribute.KeyValue that represents the give c.
+// StatusCodeAttr returns an attribute.KeyValue that represents the give c.
 func StatusCodeAttr(c gcodes.Code) attribute.KeyValue {
 	return GRPCStatusCodeKey.Int64(int64(c))
 }

core/trace/attributes_test.go

@@ -0,0 +1,12 @@
+package trace
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	gcodes "google.golang.org/grpc/codes"
+)
+
+func TestStatusCodeAttr(t *testing.T) {
+	assert.Equal(t, GRPCStatusCodeKey.Int(int(gcodes.DataLoss)), StatusCodeAttr(gcodes.DataLoss))
+}

core/trace/tracer_test.go

@@ -157,7 +157,8 @@ func TestExtractValidTraceContext(t *testing.T) {
 			}),
 		},
 	}
-	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{}, propagation.Baggage{}))
 	propagator := otel.GetTextMapPropagator()
 
 	for _, tt := range tests {
@@ -242,7 +243,8 @@ func TestExtractInvalidTraceContext(t *testing.T) {
 			header: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-",
 		},
 	}
-	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{}, propagation.Baggage{}))
 	propagator := otel.GetTextMapPropagator()
 
 	for _, tt := range tests {
@@ -308,7 +310,8 @@ func TestInjectValidTraceContext(t *testing.T) {
 			}),
 		},
 	}
-	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{}, propagation.Baggage{}))
 	propagator := otel.GetTextMapPropagator()
 
 	for _, tt := range tests {
@@ -325,6 +328,11 @@ func TestInjectValidTraceContext(t *testing.T) {
 			md := metadata.MD{}
 			Inject(ctx, propagator, &md)
 			assert.Equal(t, want, md)
+
+			mm := &metadataSupplier{
+				metadata: &md,
+			}
+			assert.NotEmpty(t, mm.Keys())
 		})
 	}
 }
@@ -334,7 +342,8 @@ func TestInvalidSpanContextDropped(t *testing.T) {
 	require.False(t, invalidSC.IsValid())
 	ctx := trace.ContextWithRemoteSpanContext(context.Background(), invalidSC)
 
-	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{}, propagation.Baggage{}))
 	propagator := otel.GetTextMapPropagator()
 
 	md := metadata.MD{}
@@ -342,5 +351,6 @@ func TestInvalidSpanContextDropped(t *testing.T) {
 	mm := &metadataSupplier{
 		metadata: &md,
 	}
+	assert.Empty(t, mm.Keys())
 	assert.Equal(t, "", mm.Get("traceparent"), "injected invalid SpanContext")
 }

core/trace/utils.go

@@ -15,7 +15,7 @@ const localhost = "127.0.0.1"
 // PeerFromCtx returns the peer from ctx.
 func PeerFromCtx(ctx context.Context) string {
 	p, ok := peer.FromContext(ctx)
-	if !ok {
+	if !ok || p == nil {
 		return ""
 	}
 
@@ -55,7 +55,7 @@ func ParseFullMethod(fullMethod string) (string, []attribute.KeyValue) {
 func PeerAttr(addr string) []attribute.KeyValue {
 	host, port, err := net.SplitHostPort(addr)
 	if err != nil {
-		return []attribute.KeyValue(nil)
+		return nil
 	}
 
 	if len(host) == 0 {

core/trace/utils_test.go

@@ -1,13 +1,53 @@
 package trace
 
 import (
+	"context"
+	"net"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"go.opentelemetry.io/otel/attribute"
 	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
+	"google.golang.org/grpc/peer"
 )
 
+func TestPeerFromContext(t *testing.T) {
+	addrs, err := net.InterfaceAddrs()
+	assert.Nil(t, err)
+	assert.NotEmpty(t, addrs)
+	tests := []struct {
+		name  string
+		ctx   context.Context
+		empty bool
+	}{
+		{
+			name:  "empty",
+			ctx:   context.Background(),
+			empty: true,
+		},
+		{
+			name:  "nil",
+			ctx:   peer.NewContext(context.Background(), nil),
+			empty: true,
+		},
+		{
+			name: "with value",
+			ctx: peer.NewContext(context.Background(), &peer.Peer{
+				Addr: addrs[0],
+			}),
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+			addr := PeerFromCtx(test.ctx)
+			assert.Equal(t, test.empty, len(addr) == 0)
+		})
+	}
+}
+
 func TestParseFullMethod(t *testing.T) {
 	tests := []struct {
 		fullMethod string
@@ -68,3 +108,46 @@ func TestParseFullMethod(t *testing.T) {
 		assert.Equal(t, test.attr, a)
 	}
 }
+
+func TestSpanInfo(t *testing.T) {
+	val, kvs := SpanInfo("/fullMethod", "remote")
+	assert.Equal(t, "fullMethod", val)
+	assert.NotEmpty(t, kvs)
+}
+
+func TestPeerAttr(t *testing.T) {
+	tests := []struct {
+		name   string
+		addr   string
+		expect []attribute.KeyValue
+	}{
+		{
+			name: "empty",
+		},
+		{
+			name: "port only",
+			addr: ":8080",
+			expect: []attribute.KeyValue{
+				semconv.NetPeerIPKey.String(localhost),
+				semconv.NetPeerPortKey.String("8080"),
+			},
+		},
+		{
+			name: "port only",
+			addr: "192.168.0.2:8080",
+			expect: []attribute.KeyValue{
+				semconv.NetPeerIPKey.String("192.168.0.2"),
+				semconv.NetPeerPortKey.String("8080"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+			kvs := PeerAttr(test.addr)
+			assert.EqualValues(t, test.expect, kvs)
+		})
+	}
+}

go.mod

@@ -3,55 +3,51 @@ module github.com/tal-tech/go-zero
 go 1.14
 
 require (
-	github.com/ClickHouse/clickhouse-go v1.4.3
-	github.com/DATA-DOG/go-sqlmock v1.4.1
-	github.com/alicebob/miniredis/v2 v2.14.1
-	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
-	github.com/emicklei/proto v1.9.0
+	github.com/ClickHouse/clickhouse-go v1.5.1
+	github.com/DATA-DOG/go-sqlmock v1.5.0
+	github.com/alicebob/miniredis/v2 v2.16.0
+	github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
+	github.com/emicklei/proto v1.9.1
 	github.com/fatih/color v1.9.0 // indirect
 	github.com/fatih/structtag v1.2.0
-	github.com/frankban/quicktest v1.7.2 // indirect
 	github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8
-	github.com/go-redis/redis v6.15.7+incompatible
-	github.com/go-sql-driver/mysql v1.5.0
-	github.com/go-xorm/builder v0.3.4
+	github.com/go-redis/redis v6.15.9+incompatible
+	github.com/go-sql-driver/mysql v1.6.0
 	github.com/golang-jwt/jwt v3.2.1+incompatible
-	github.com/golang/mock v1.4.3
-	github.com/google/uuid v1.1.2
-	github.com/iancoleman/strcase v0.1.2
+	github.com/golang/mock v1.6.0
+	github.com/google/uuid v1.3.0
+	github.com/iancoleman/strcase v0.2.0
 	github.com/justinas/alice v1.2.0
-	github.com/lib/pq v1.3.0
+	github.com/lib/pq v1.10.3
 	github.com/logrusorgru/aurora v2.0.3+incompatible
 	github.com/mattn/go-colorable v0.1.6 // indirect
 	github.com/olekukonko/tablewriter v0.0.5
-	github.com/pierrec/lz4 v2.5.1+incompatible // indirect
+	github.com/openzipkin/zipkin-go v0.3.0 // indirect
 	github.com/prometheus/client_golang v1.11.0
-	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/spaolacci/murmur3 v1.1.0
 	github.com/stretchr/testify v1.7.0
 	github.com/urfave/cli v1.22.5
 	github.com/zeromicro/antlr v0.0.1
 	github.com/zeromicro/ddl-parser v0.0.0-20210712021150-63520aca7348
-	github.com/zeromicro/protobuf v0.0.0-20210921042113-636cd51f0c35
-	go.etcd.io/etcd/api/v3 v3.5.0
-	go.etcd.io/etcd/client/v3 v3.5.0
-	go.opentelemetry.io/otel v1.0.1
-	go.opentelemetry.io/otel/exporters/jaeger v1.0.1
-	go.opentelemetry.io/otel/exporters/zipkin v1.0.1
-	go.opentelemetry.io/otel/sdk v1.0.1
-	go.opentelemetry.io/otel/trace v1.0.1
-	go.uber.org/automaxprocs v1.3.0
+	go.etcd.io/etcd/api/v3 v3.5.1
+	go.etcd.io/etcd/client/v3 v3.5.1
+	go.opentelemetry.io/otel v1.1.0
+	go.opentelemetry.io/otel/exporters/jaeger v1.1.0
+	go.opentelemetry.io/otel/exporters/zipkin v1.1.0
+	go.opentelemetry.io/otel/sdk v1.1.0
+	go.opentelemetry.io/otel/trace v1.1.0
+	go.uber.org/automaxprocs v1.4.0
 	golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b // indirect
-	golang.org/x/sys v0.0.0-20211002104244-808efd93c36d // indirect
-	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/sys v0.0.0-20211106132015-ebca88c72f68 // indirect
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac
 	google.golang.org/genproto v0.0.0-20210928142010-c7af6a1a74c9 // indirect
-	google.golang.org/grpc v1.41.0
+	google.golang.org/grpc v1.42.0
 	google.golang.org/protobuf v1.27.1
 	gopkg.in/cheggaaa/pb.v1 v1.0.28
-	gopkg.in/h2non/gock.v1 v1.0.15
+	gopkg.in/h2non/gock.v1 v1.1.2
 	gopkg.in/yaml.v2 v2.4.0
-	k8s.io/api v0.20.10
-	k8s.io/apimachinery v0.20.10
-	k8s.io/client-go v0.20.10
+	k8s.io/api v0.20.12
+	k8s.io/apimachinery v0.20.12
+	k8s.io/client-go v0.20.12
+	k8s.io/utils v0.0.0-20201110183641-67b214c5f920
 )

go.sum

@@ -32,16 +32,18 @@ github.com/Azure/go-autorest/logger v0.2.0/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZ
 github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/ClickHouse/clickhouse-go v1.4.3 h1:iAFMa2UrQdR5bHJ2/yaSLffZkxpcOYQMCUuKeNXGdqc=
-github.com/ClickHouse/clickhouse-go v1.4.3/go.mod h1:EaI/sW7Azgz9UATzd5ZdZHRUhHgv5+JMS9NSr2smCJI=
-github.com/DATA-DOG/go-sqlmock v1.4.1 h1:ThlnYciV1iM/V0OSF/dtkqWb6xo5qITT1TJBG1MRDJM=
-github.com/DATA-DOG/go-sqlmock v1.4.1/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
+github.com/ClickHouse/clickhouse-go v1.5.1 h1:I8zVFZTz80crCs0FFEBJooIxsPcV0xfthzK1YrkpJTc=
+github.com/ClickHouse/clickhouse-go v1.5.1/go.mod h1:EaI/sW7Azgz9UATzd5ZdZHRUhHgv5+JMS9NSr2smCJI=
+github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
+github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
+github.com/Shopify/sarama v1.30.0/go.mod h1:zujlQQx1kzHsh4jfV1USnptCQrHAEZ2Hk8fTKCulPVs=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
+github.com/Shopify/toxiproxy/v2 v2.1.6-0.20210914104332-15ea381dcdae/go.mod h1:/cvHQkZ1fst0EmZnA5dFtiQdWCNCFYzb+uE2vqVgvx0=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -49,8 +51,8 @@ github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRF
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a h1:HbKu58rmZpUGpz5+4FfNmIU+FmZg2P3Xaj2v2bfNWmk=
 github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
-github.com/alicebob/miniredis/v2 v2.14.1 h1:GjlbSeoJ24bzdLRs13HoMEeaRZx9kg5nHoRW7QV/nCs=
-github.com/alicebob/miniredis/v2 v2.14.1/go.mod h1:uS970Sw5Gs9/iK3yBg0l9Uj9s25wXxSpQUE9EaJ/Blg=
+github.com/alicebob/miniredis/v2 v2.16.0 h1:ALkyFg7bSTEd1Mkrb4ppq4fnwjklA59dVtIehXCUZkU=
+github.com/alicebob/miniredis/v2 v2.16.0/go.mod h1:gquAfGbzn92jvtrSC69+6zZnwSODVXVpYDRaGhWaL6I=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210521184019-c5ad59b459ec h1:EEyRvzmpEUZ+I8WmD5cw/vY8EqhambkOqy5iFr0908A=
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210521184019-c5ad59b459ec/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
@@ -74,15 +76,19 @@ github.com/cloudflare/golz4 v0.0.0-20150217214814-ef862a3cdc58 h1:F1EaeKL/ta07PY
 github.com/cloudflare/golz4 v0.0.0-20150217214814-ef862a3cdc58/go.mod h1:EOBUe0h4xcZ5GoxqC5SDxFQ8gwyZPKQoEzownBlhI80=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI=
 github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd/v22 v22.3.2 h1:D9/bQk5vlXQFZ6Kwuu6zaiXJ9oTPe68++AzAJc1DzSI=
 github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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@@ -91,12 +97,13 @@ github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZ
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@@ -111,8 +118,9 @@ github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL
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@@ -139,16 +147,13 @@ github.com/go-openapi/jsonreference v0.19.3/go.mod h1:rjx6GuL8TTa9VaixXglHmQmIL9
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@@ -165,8 +170,8 @@ github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
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@@ -184,6 +189,7 @@ github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaS
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@@ -207,28 +213,38 @@ github.com/google/pprof v0.0.0-20200212024743-f11f1df84d12/go.mod h1:ZgVRPoUq/hf
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@@ -243,19 +259,22 @@ github.com/justinas/alice v1.2.0 h1:+MHSA/vccVCF4Uq37S42jwlkvI2Xzl7zTPCN5BnZNVo=
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-go.uber.org/automaxprocs v1.3.0/go.mod h1:9CWT6lKIep8U41DDaPiH6eFscnTyjfTANNQNx6LrIcA=
+go.uber.org/automaxprocs v1.4.0 h1:CpDZl6aOlLhReez+8S3eEotD7Jx0Os++lemPlMULQP0=
+go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q=
 go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
 go.uber.org/zap v1.17.0 h1:MTjgFu6ZLKvY6Pvaqk97GlxNBuMpV4Hy/3P6tRGlI2U=
@@ -407,8 +441,10 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0 h1:hb9wdF1z5waM+dSIICn1l0DkLVDT3hqhhQsDNUmHPRE=
 golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -463,11 +499,15 @@ golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
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 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
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+golang.org/x/net v0.0.0-20210917221730-978cfadd31cf/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b h1:eB48h3HiRycXNy8E0Gf5e0hv7YT6Kt14L/D73G1fuwo=
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 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -501,9 +541,11 @@ golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -520,6 +562,7 @@ golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201112073958-5cba982894dd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -527,15 +570,16 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211002104244-808efd93c36d h1:SABT8Vei3iTiu+Gy8KOzpSNz+W1EQ5YBCRtiEETxF+0=
-golang.org/x/sys v0.0.0-20211002104244-808efd93c36d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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@@ -578,7 +622,9 @@ golang.org/x/tools v0.0.0-20200212150539-ea181f53ac56/go.mod h1:TB2adYChydJhpapK
 golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
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 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -637,8 +683,9 @@ google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTp
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.41.0 h1:f+PlOh7QV4iIJkPrx5NQ7qaNGFQ3OTse67yaDHfju4E=
 google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
+google.golang.org/grpc v1.42.0 h1:XT2/MFpuPFsEX2fWh3YQtHkZ+WYZFQRfaUgLZYj/p6A=
+google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
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@@ -655,15 +702,15 @@ google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
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-gopkg.in/h2non/gock.v1 v1.0.15 h1:SzLqcIlb/fDfg7UvukMpNcWsu7sI5tWwL+KCATZqks0=
-gopkg.in/h2non/gock.v1 v1.0.15/go.mod h1:sX4zAkdYX1TRGJ2JY156cFspQn4yRWn6p9EMdODlynE=
+gopkg.in/h2non/gock.v1 v1.1.2 h1:jBbHXgGBK/AoPVfJh5x4r/WxIrElvbLel8TCZkkZJoY=
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@@ -686,12 +733,12 @@ honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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-k8s.io/api v0.20.10 h1:kAdgi1zcyenV88/uVEzS9B/fn1m4KRbmdKB0Lxl6z/M=
-k8s.io/api v0.20.10/go.mod h1:0kei3F6biGjtRQBo5dUeujq6Ji3UCh9aOSfp/THYd7I=
-k8s.io/apimachinery v0.20.10 h1:GcFwz5hsGgKLohcNgv8GrInk60vUdFgBXW7uOY1i1YM=
-k8s.io/apimachinery v0.20.10/go.mod h1:kQa//VOAwyVwJ2+L9kOREbsnryfsGSkSM1przND4+mw=
-k8s.io/client-go v0.20.10 h1:TgAL2pqcNWMH4eZoS9Uw0BLh2lu5a2A4pmegjp5pmsk=
-k8s.io/client-go v0.20.10/go.mod h1:fFg+aLoasv/R+xiVaWjxeqGFYltzgQcOQzkFaSRfnJ0=
+k8s.io/api v0.20.12 h1:LfRpmRkJLwPP8eaYehsVVmIIfg1yCBIIUHaSsdqCgHA=
+k8s.io/api v0.20.12/go.mod h1:A2brwyEkVLM3wQGNnzoAa5JsQRzHK0uoOQ+bsnv7V68=
+k8s.io/apimachinery v0.20.12 h1:2c0LIVNMvB8k2Ozstmhl2zGeCEcPazznuLYEwxFdNjM=
+k8s.io/apimachinery v0.20.12/go.mod h1:uM7hCI0NyBymUwgshMgZyte475lxhr+QH6h3cvdnzEc=
+k8s.io/client-go v0.20.12 h1:U75SxTC31BHT9i7CbX/hL4v+U1Wkzy/E1vt5ClDPp3I=
+k8s.io/client-go v0.20.12/go.mod h1:NBJj6Evp73Xy/4v/O/RDRaH0+3JoxNfjRxkyRgrdbsA=
 k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
 k8s.io/klog/v2 v2.4.0 h1:7+X0fUguPyrKEC4WjH8iGDg3laWgMo5tMnRTIGTTxGQ=

readme-cn.md

@@ -104,10 +104,10 @@ GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/tal-tech/
 
     ```shell
     # Go 1.15 及之前版本
-    GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/tal-tech/go-zero/tools/goctl
+    GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/tal-tech/go-zero/tools/goctl@cli
     
     # Go 1.16 及以后版本
-    go install github.com/tal-tech/go-zero/tools/goctl@latest
+    GOPROXY=https://goproxy.cn/,direct go install github.com/tal-tech/go-zero/tools/goctl@cli
     ```
 
     确保 goctl 可执行
@@ -226,6 +226,12 @@ go-zero 已被许多公司用于生产部署，接入场景如在线教育、电
 >40. 马鞍山百助网络科技有限公司
 >41. 上海阿莫尔科技有限公司
 >42. 发明者量化
+>43. 济南超级盟网络科技有限公司
+>44. 苏州互盟信息存储技术有限公司
+>45. 成都艾途教育科技集团有限公司
+>46. 上海游族网络
+>47. 深信服
+>48. 中免日上科技互联有限公司
 
 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。
 
@@ -242,7 +248,7 @@ go-zero 收录在 [CNCF Cloud Native 云原生技术全景图](https://landscape
 
 `go-zero` 相关文章和视频都会在 `微服务实践` 公众号整理呈现，欢迎扫码关注 👏
 
-<img src="https://raw.githubusercontent.com/zeromicro/zero-doc/main/doc/images/wechat-micro.jpg" alt="wechat" width="300" />
+<img src="https://raw.githubusercontent.com/zeromicro/zero-doc/main/doc/images/zeromicro.jpg" alt="wechat" width="600" />
 
 ## 11. 微信交流群
 

readme.md

@@ -107,10 +107,10 @@ go get -u github.com/tal-tech/go-zero
 
    ```shell
    # for Go 1.15 and earlier
-   GO111MODULE=on go get -u github.com/tal-tech/go-zero/tools/goctl
+   GO111MODULE=on go get -u github.com/tal-tech/go-zero/tools/goctl@cli
    
    # for Go 1.16 and later
-   go install github.com/tal-tech/go-zero/tools/goctl@latest
+   go install github.com/tal-tech/go-zero/tools/goctl@cli
    ```
 
    make sure goctl is executable.

rest/config.go

@@ -35,7 +35,7 @@ type (
 		KeyFile  string `json:",optional"`
 		Verbose  bool   `json:",optional"`
 		MaxConns int    `json:",default=10000"`
-		MaxBytes int64  `json:",default=1048576,range=[0:33554432]"`
+		MaxBytes int64  `json:",default=1048576"`
 		// milliseconds
 		Timeout      int64         `json:",default=3000"`
 		CpuThreshold int64         `json:",default=900,range=[0:1000]"`

rest/engine.go

@@ -1,6 +1,7 @@
 package rest
 
 import (
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"net/http"
@@ -13,7 +14,6 @@ import (
 	"github.com/tal-tech/go-zero/rest/handler"
 	"github.com/tal-tech/go-zero/rest/httpx"
 	"github.com/tal-tech/go-zero/rest/internal"
-	"github.com/tal-tech/go-zero/rest/router"
 )
 
 // use 1000m to represent 100%
@@ -30,6 +30,7 @@ type engine struct {
 	middlewares          []Middleware
 	shedder              load.Shedder
 	priorityShedder      load.Shedder
+	tlsConfig            *tls.Config
 }
 
 func newEngine(c RestConf) *engine {
@@ -45,58 +46,34 @@ func newEngine(c RestConf) *engine {
 	return srv
 }
 
-func (s *engine) AddRoutes(r featuredRoutes) {
-	s.routes = append(s.routes, r)
+func (ng *engine) addRoutes(r featuredRoutes) {
+	ng.routes = append(ng.routes, r)
 }
 
-func (s *engine) SetUnauthorizedCallback(callback handler.UnauthorizedCallback) {
-	s.unauthorizedCallback = callback
-}
-
-func (s *engine) SetUnsignedCallback(callback handler.UnsignedCallback) {
-	s.unsignedCallback = callback
-}
-
-func (s *engine) Start() error {
-	return s.StartWithRouter(router.NewRouter())
-}
-
-func (s *engine) StartWithRouter(router httpx.Router) error {
-	if err := s.bindRoutes(router); err != nil {
-		return err
-	}
-
-	if len(s.conf.CertFile) == 0 && len(s.conf.KeyFile) == 0 {
-		return internal.StartHttp(s.conf.Host, s.conf.Port, router)
-	}
-
-	return internal.StartHttps(s.conf.Host, s.conf.Port, s.conf.CertFile, s.conf.KeyFile, router)
-}
-
-func (s *engine) appendAuthHandler(fr featuredRoutes, chain alice.Chain,
+func (ng *engine) appendAuthHandler(fr featuredRoutes, chain alice.Chain,
 	verifier func(alice.Chain) alice.Chain) alice.Chain {
 	if fr.jwt.enabled {
 		if len(fr.jwt.prevSecret) == 0 {
 			chain = chain.Append(handler.Authorize(fr.jwt.secret,
-				handler.WithUnauthorizedCallback(s.unauthorizedCallback)))
+				handler.WithUnauthorizedCallback(ng.unauthorizedCallback)))
 		} else {
 			chain = chain.Append(handler.Authorize(fr.jwt.secret,
 				handler.WithPrevSecret(fr.jwt.prevSecret),
-				handler.WithUnauthorizedCallback(s.unauthorizedCallback)))
+				handler.WithUnauthorizedCallback(ng.unauthorizedCallback)))
 		}
 	}
 
 	return verifier(chain)
 }
 
-func (s *engine) bindFeaturedRoutes(router httpx.Router, fr featuredRoutes, metrics *stat.Metrics) error {
-	verifier, err := s.signatureVerifier(fr.signature)
+func (ng *engine) bindFeaturedRoutes(router httpx.Router, fr featuredRoutes, metrics *stat.Metrics) error {
+	verifier, err := ng.signatureVerifier(fr.signature)
 	if err != nil {
 		return err
 	}
 
 	for _, route := range fr.routes {
-		if err := s.bindRoute(fr, router, metrics, route, verifier); err != nil {
+		if err := ng.bindRoute(fr, router, metrics, route, verifier); err != nil {
 			return err
 		}
 	}
@@ -104,24 +81,24 @@ func (s *engine) bindFeaturedRoutes(router httpx.Router, fr featuredRoutes, metr
 	return nil
 }
 
-func (s *engine) bindRoute(fr featuredRoutes, router httpx.Router, metrics *stat.Metrics,
+func (ng *engine) bindRoute(fr featuredRoutes, router httpx.Router, metrics *stat.Metrics,
 	route Route, verifier func(chain alice.Chain) alice.Chain) error {
 	chain := alice.New(
-		handler.TracingHandler(s.conf.Name, route.Path),
-		s.getLogHandler(),
+		handler.TracingHandler(ng.conf.Name, route.Path),
+		ng.getLogHandler(),
 		handler.PrometheusHandler(route.Path),
-		handler.MaxConns(s.conf.MaxConns),
+		handler.MaxConns(ng.conf.MaxConns),
 		handler.BreakerHandler(route.Method, route.Path, metrics),
-		handler.SheddingHandler(s.getShedder(fr.priority), metrics),
-		handler.TimeoutHandler(time.Duration(s.conf.Timeout)*time.Millisecond),
+		handler.SheddingHandler(ng.getShedder(fr.priority), metrics),
+		handler.TimeoutHandler(ng.checkedTimeout(fr.timeout)),
 		handler.RecoverHandler,
 		handler.MetricHandler(metrics),
-		handler.MaxBytesHandler(s.conf.MaxBytes),
+		handler.MaxBytesHandler(ng.conf.MaxBytes),
 		handler.GunzipHandler,
 	)
-	chain = s.appendAuthHandler(fr, chain, verifier)
+	chain = ng.appendAuthHandler(fr, chain, verifier)
 
-	for _, middleware := range s.middlewares {
+	for _, middleware := range ng.middlewares {
 		chain = chain.Append(convertMiddleware(middleware))
 	}
 	handle := chain.ThenFunc(route.Handler)
@@ -129,11 +106,11 @@ func (s *engine) bindRoute(fr featuredRoutes, router httpx.Router, metrics *stat
 	return router.Handle(route.Method, route.Path, handle)
 }
 
-func (s *engine) bindRoutes(router httpx.Router) error {
-	metrics := s.createMetrics()
+func (ng *engine) bindRoutes(router httpx.Router) error {
+	metrics := ng.createMetrics()
 
-	for _, fr := range s.routes {
-		if err := s.bindFeaturedRoutes(router, fr, metrics); err != nil {
+	for _, fr := range ng.routes {
+		if err := ng.bindFeaturedRoutes(router, fr, metrics); err != nil {
 			return err
 		}
 	}
@@ -141,35 +118,55 @@ func (s *engine) bindRoutes(router httpx.Router) error {
 	return nil
 }
 
-func (s *engine) createMetrics() *stat.Metrics {
+func (ng *engine) checkedTimeout(timeout time.Duration) time.Duration {
+	if timeout > 0 {
+		return timeout
+	}
+
+	return time.Duration(ng.conf.Timeout) * time.Millisecond
+}
+
+func (ng *engine) createMetrics() *stat.Metrics {
 	var metrics *stat.Metrics
 
-	if len(s.conf.Name) > 0 {
-		metrics = stat.NewMetrics(s.conf.Name)
+	if len(ng.conf.Name) > 0 {
+		metrics = stat.NewMetrics(ng.conf.Name)
 	} else {
-		metrics = stat.NewMetrics(fmt.Sprintf("%s:%d", s.conf.Host, s.conf.Port))
+		metrics = stat.NewMetrics(fmt.Sprintf("%s:%d", ng.conf.Host, ng.conf.Port))
 	}
 
 	return metrics
 }
 
-func (s *engine) getLogHandler() func(http.Handler) http.Handler {
-	if s.conf.Verbose {
+func (ng *engine) getLogHandler() func(http.Handler) http.Handler {
+	if ng.conf.Verbose {
 		return handler.DetailedLogHandler
 	}
 
 	return handler.LogHandler
 }
 
-func (s *engine) getShedder(priority bool) load.Shedder {
-	if priority && s.priorityShedder != nil {
-		return s.priorityShedder
+func (ng *engine) getShedder(priority bool) load.Shedder {
+	if priority && ng.priorityShedder != nil {
+		return ng.priorityShedder
 	}
 
-	return s.shedder
+	return ng.shedder
 }
 
-func (s *engine) signatureVerifier(signature signatureSetting) (func(chain alice.Chain) alice.Chain, error) {
+func (ng *engine) setTlsConfig(cfg *tls.Config) {
+	ng.tlsConfig = cfg
+}
+
+func (ng *engine) setUnauthorizedCallback(callback handler.UnauthorizedCallback) {
+	ng.unauthorizedCallback = callback
+}
+
+func (ng *engine) setUnsignedCallback(callback handler.UnsignedCallback) {
+	ng.unsignedCallback = callback
+}
+
+func (ng *engine) signatureVerifier(signature signatureSetting) (func(chain alice.Chain) alice.Chain, error) {
 	if !signature.enabled {
 		return func(chain alice.Chain) alice.Chain {
 			return chain
@@ -199,9 +196,9 @@ func (s *engine) signatureVerifier(signature signatureSetting) (func(chain alice
 	}
 
 	return func(chain alice.Chain) alice.Chain {
-		if s.unsignedCallback != nil {
+		if ng.unsignedCallback != nil {
 			return chain.Append(handler.ContentSecurityHandler(
-				decrypters, signature.Expiry, signature.Strict, s.unsignedCallback))
+				decrypters, signature.Expiry, signature.Strict, ng.unsignedCallback))
 		}
 
 		return chain.Append(handler.ContentSecurityHandler(
@@ -209,8 +206,25 @@ func (s *engine) signatureVerifier(signature signatureSetting) (func(chain alice
 	}, nil
 }
 
-func (s *engine) use(middleware Middleware) {
-	s.middlewares = append(s.middlewares, middleware)
+func (ng *engine) start(router httpx.Router) error {
+	if err := ng.bindRoutes(router); err != nil {
+		return err
+	}
+
+	if len(ng.conf.CertFile) == 0 && len(ng.conf.KeyFile) == 0 {
+		return internal.StartHttp(ng.conf.Host, ng.conf.Port, router)
+	}
+
+	return internal.StartHttps(ng.conf.Host, ng.conf.Port, ng.conf.CertFile,
+		ng.conf.KeyFile, router, func(srv *http.Server) {
+			if ng.tlsConfig != nil {
+				srv.TLSConfig = ng.tlsConfig
+			}
+		})
+}
+
+func (ng *engine) use(middleware Middleware) {
+	ng.middlewares = append(ng.middlewares, middleware)
 }
 
 func convertMiddleware(ware Middleware) func(http.Handler) http.Handler {

rest/engine_test.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"net/http"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/tal-tech/go-zero/core/conf"
@@ -143,17 +144,52 @@ Verbose: true
 			var cnf RestConf
 			assert.Nil(t, conf.LoadConfigFromYamlBytes([]byte(yaml), &cnf))
 			ng := newEngine(cnf)
-			ng.AddRoutes(route)
+			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.StartWithRouter(mockedRouter{}))
+			assert.NotNil(t, ng.start(mockedRouter{}))
 		}
 	}
 }
 
+func TestEngine_checkedTimeout(t *testing.T) {
+	tests := []struct {
+		name    string
+		timeout time.Duration
+		expect  time.Duration
+	}{
+		{
+			name:   "not set",
+			expect: time.Second,
+		},
+		{
+			name:    "less",
+			timeout: time.Millisecond * 500,
+			expect:  time.Millisecond * 500,
+		},
+		{
+			name:    "equal",
+			timeout: time.Second,
+			expect:  time.Second,
+		},
+		{
+			name:    "more",
+			timeout: time.Millisecond * 1500,
+			expect:  time.Millisecond * 1500,
+		},
+	}
+
+	ng := newEngine(RestConf{
+		Timeout: 1000,
+	})
+	for _, test := range tests {
+		assert.Equal(t, test.expect, ng.checkedTimeout(test.timeout))
+	}
+}
+
 type mockedRouter struct{}
 
 func (m mockedRouter) ServeHTTP(writer http.ResponseWriter, request *http.Request) {

rest/handler/loghandler.go

@@ -16,6 +16,7 @@ import (
 
 	"github.com/tal-tech/go-zero/core/iox"
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/syncx"
 	"github.com/tal-tech/go-zero/core/timex"
 	"github.com/tal-tech/go-zero/core/utils"
 	"github.com/tal-tech/go-zero/rest/httpx"
@@ -23,10 +24,12 @@ import (
 )
 
 const (
-	limitBodyBytes = 1024
-	slowThreshold  = time.Millisecond * 500
+	limitBodyBytes       = 1024
+	defaultSlowThreshold = time.Millisecond * 500
 )
 
+var slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+
 type loggedResponseWriter struct {
 	w    http.ResponseWriter
 	r    *http.Request
@@ -140,6 +143,11 @@ func DetailedLogHandler(next http.Handler) http.Handler {
 	})
 }
 
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
+
 func dumpRequest(r *http.Request) string {
 	reqContent, err := httputil.DumpRequest(r, true)
 	if err != nil {
@@ -155,7 +163,7 @@ func logBrief(r *http.Request, code int, timer *utils.ElapsedTimer, logs *intern
 	logger := logx.WithContext(r.Context())
 	buf.WriteString(fmt.Sprintf("[HTTP] %s - %d - %s - %s - %s - %s",
 		r.Method, code, r.RequestURI, httpx.GetRemoteAddr(r), r.UserAgent(), timex.ReprOfDuration(duration)))
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logger.Slowf("[HTTP] %s - %d - %s - %s - %s - slowcall(%s)",
 			r.Method, code, r.RequestURI, httpx.GetRemoteAddr(r), r.UserAgent(), timex.ReprOfDuration(duration))
 	}
@@ -191,7 +199,7 @@ func logDetails(r *http.Request, response *detailLoggedResponseWriter, timer *ut
 	logger := logx.WithContext(r.Context())
 	buf.WriteString(fmt.Sprintf("[HTTP] %s - %d - %s - %s\n=> %s\n",
 		r.Method, response.writer.code, r.RemoteAddr, timex.ReprOfDuration(duration), dumpRequest(r)))
-	if duration > slowThreshold {
+	if duration > defaultSlowThreshold {
 		logger.Slowf("[HTTP] %s - %d - %s - slowcall(%s)\n=> %s\n",
 			r.Method, response.writer.code, r.RemoteAddr, timex.ReprOfDuration(duration), dumpRequest(r))
 	}

rest/handler/loghandler_test.go

@@ -53,7 +53,7 @@ func TestLogHandlerSlow(t *testing.T) {
 	for _, logHandler := range handlers {
 		req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
 		handler := logHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			time.Sleep(slowThreshold + time.Millisecond*50)
+			time.Sleep(defaultSlowThreshold + time.Millisecond*50)
 		}))
 
 		resp := httptest.NewRecorder()
@@ -100,6 +100,12 @@ func TestDetailedLogHandler_Hijack(t *testing.T) {
 	})
 }
 
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}
+
 func BenchmarkLogHandler(b *testing.B) {
 	b.ReportAllocs()
 

rest/handlers.go

@@ -1,27 +0,0 @@
-package rest
-
-import "net/http"
-
-const (
-	allowOrigin  = "Access-Control-Allow-Origin"
-	allOrigins   = "*"
-	allowMethods = "Access-Control-Allow-Methods"
-	allowHeaders = "Access-Control-Allow-Headers"
-	headers      = "Content-Type, Content-Length, Origin"
-	methods      = "GET, HEAD, POST, PATCH, PUT, DELETE"
-)
-
-// CorsHandler handles cross domain OPTIONS requests.
-// At most one origin can be specified, other origins are ignored if given.
-func CorsHandler(origins ...string) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if len(origins) > 0 {
-			w.Header().Set(allowOrigin, origins[0])
-		} else {
-			w.Header().Set(allowOrigin, allOrigins)
-		}
-		w.Header().Set(allowMethods, methods)
-		w.Header().Set(allowHeaders, headers)
-		w.WriteHeader(http.StatusNoContent)
-	})
-}

rest/handlers_test.go

@@ -1,42 +0,0 @@
-package rest
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestCorsHandlerWithOrigins(t *testing.T) {
-	tests := []struct {
-		name    string
-		origins []string
-		expect  string
-	}{
-		{
-			name:   "allow all origins",
-			expect: allOrigins,
-		},
-		{
-			name:    "allow one origin",
-			origins: []string{"local"},
-			expect:  "local",
-		},
-		{
-			name:    "allow many origins",
-			origins: []string{"local", "remote"},
-			expect:  "local",
-		},
-	}
-
-	for _, test := range tests {
-		t.Run(test.name, func(t *testing.T) {
-			w := httptest.NewRecorder()
-			handler := CorsHandler(test.origins...)
-			handler.ServeHTTP(w, nil)
-			assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
-			assert.Equal(t, test.expect, w.Header().Get(allowOrigin))
-		})
-	}
-}

rest/httpx/requests_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/rest/pathvar"
 )
 
 func TestParseForm(t *testing.T) {
@@ -17,7 +18,7 @@ func TestParseForm(t *testing.T) {
 		Percent float64 `form:"percent,optional"`
 	}
 
-	r, err := http.NewRequest(http.MethodGet, "http://hello.com/a?name=hello&age=18&percent=3.4", nil)
+	r, err := http.NewRequest(http.MethodGet, "/a?name=hello&age=18&percent=3.4", nil)
 	assert.Nil(t, err)
 	assert.Nil(t, Parse(r, &v))
 	assert.Equal(t, "hello", v.Name)
@@ -25,11 +26,83 @@ func TestParseForm(t *testing.T) {
 	assert.Equal(t, 3.4, v.Percent)
 }
 
+func TestParseForm_Error(t *testing.T) {
+	var v struct {
+		Name string `form:"name"`
+		Age  int    `form:"age"`
+	}
+
+	r := httptest.NewRequest(http.MethodGet, "/a?name=hello;", nil)
+	assert.NotNil(t, ParseForm(r, &v))
+}
+
 func TestParseHeader(t *testing.T) {
-	m := ParseHeader("key=value;")
-	assert.EqualValues(t, map[string]string{
-		"key": "value",
-	}, m)
+	tests := []struct {
+		name   string
+		value  string
+		expect map[string]string
+	}{
+		{
+			name:   "empty",
+			value:  "",
+			expect: map[string]string{},
+		},
+		{
+			name:   "regular",
+			value:  "key=value",
+			expect: map[string]string{"key": "value"},
+		},
+		{
+			name:   "next empty",
+			value:  "key=value;",
+			expect: map[string]string{"key": "value"},
+		},
+		{
+			name:   "regular",
+			value:  "key=value;foo",
+			expect: map[string]string{"key": "value"},
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+
+			m := ParseHeader(test.value)
+			assert.EqualValues(t, test.expect, m)
+		})
+	}
+}
+
+func TestParsePath(t *testing.T) {
+	var v struct {
+		Name string `path:"name"`
+		Age  int    `path:"age"`
+	}
+
+	r := httptest.NewRequest(http.MethodGet, "/", nil)
+	r = pathvar.WithVars(r, map[string]string{
+		"name": "foo",
+		"age":  "18",
+	})
+	err := Parse(r, &v)
+	assert.Nil(t, err)
+	assert.Equal(t, "foo", v.Name)
+	assert.Equal(t, 18, v.Age)
+}
+
+func TestParsePath_Error(t *testing.T) {
+	var v struct {
+		Name string `path:"name"`
+		Age  int    `path:"age"`
+	}
+
+	r := httptest.NewRequest(http.MethodGet, "/", nil)
+	r = pathvar.WithVars(r, map[string]string{
+		"name": "foo",
+	})
+	assert.NotNil(t, Parse(r, &v))
 }
 
 func TestParseFormOutOfRange(t *testing.T) {
@@ -42,23 +115,23 @@ func TestParseFormOutOfRange(t *testing.T) {
 		pass bool
 	}{
 		{
-			url:  "http://hello.com/a?age=5",
+			url:  "/a?age=5",
 			pass: false,
 		},
 		{
-			url:  "http://hello.com/a?age=10",
+			url:  "/a?age=10",
 			pass: true,
 		},
 		{
-			url:  "http://hello.com/a?age=15",
+			url:  "/a?age=15",
 			pass: true,
 		},
 		{
-			url:  "http://hello.com/a?age=20",
+			url:  "/a?age=20",
 			pass: false,
 		},
 		{
-			url:  "http://hello.com/a?age=28",
+			url:  "/a?age=28",
 			pass: false,
 		},
 	}
@@ -92,7 +165,7 @@ Content-Disposition: form-data; name="age"
 18
 ----------------------------220477612388154780019383--`, "\n", "\r\n", -1)
 
-	r := httptest.NewRequest(http.MethodPost, "http://localhost:3333/", strings.NewReader(body))
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
 	r.Header.Set(ContentType, "multipart/form-data; boundary=--------------------------220477612388154780019383")
 
 	assert.Nil(t, Parse(r, &v))
@@ -116,7 +189,7 @@ Content-Disposition: form-data; name="age"
 18
 ----------------------------22047761238815478001938--`, "\n", "\r\n", -1)
 
-	r := httptest.NewRequest(http.MethodPost, "http://localhost:3333/", strings.NewReader(body))
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
 	r.Header.Set(ContentType, "multipart/form-data; boundary=--------------------------220477612388154780019383")
 
 	assert.NotNil(t, Parse(r, &v))
@@ -129,7 +202,7 @@ func TestParseJsonBody(t *testing.T) {
 	}
 
 	body := `{"name":"kevin", "age": 18}`
-	r := httptest.NewRequest(http.MethodPost, "http://localhost:3333/", strings.NewReader(body))
+	r := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(body))
 	r.Header.Set(ContentType, ApplicationJson)
 
 	assert.Nil(t, Parse(r, &v))
@@ -143,7 +216,7 @@ func TestParseRequired(t *testing.T) {
 		Percent float64 `form:"percent"`
 	}{}
 
-	r, err := http.NewRequest(http.MethodGet, "http://hello.com/a?name=hello", nil)
+	r, err := http.NewRequest(http.MethodGet, "/a?name=hello", nil)
 	assert.Nil(t, err)
 	assert.NotNil(t, Parse(r, &v))
 }
@@ -153,11 +226,57 @@ func TestParseOptions(t *testing.T) {
 		Position int8 `form:"pos,options=1|2"`
 	}{}
 
-	r, err := http.NewRequest(http.MethodGet, "http://hello.com/a?pos=4", nil)
+	r, err := http.NewRequest(http.MethodGet, "/a?pos=4", nil)
 	assert.Nil(t, err)
 	assert.NotNil(t, Parse(r, &v))
 }
 
+func TestParseHeaders(t *testing.T) {
+	type AnonymousStruct struct {
+		XRealIP string `header:"x-real-ip"`
+		Accept  string `header:"Accept,optional"`
+	}
+	v := struct {
+		Name          string   `header:"name,optional"`
+		Percent       string   `header:"percent"`
+		Addrs         []string `header:"addrs"`
+		XForwardedFor string   `header:"X-Forwarded-For,optional"`
+		AnonymousStruct
+	}{}
+	request, err := http.NewRequest("POST", "/", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	request.Header.Set("name", "chenquan")
+	request.Header.Set("percent", "1")
+	request.Header.Add("addrs", "addr1")
+	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", "application/json")
+	err = ParseHeaders(request, &v)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, "chenquan", v.Name)
+	assert.Equal(t, "1", v.Percent)
+	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, "application/json", v.Accept)
+}
+
+func TestParseHeaders_Error(t *testing.T) {
+	v := struct {
+		Name string `header:"name"`
+		Age  int    `header:"age"`
+	}{}
+
+	r := httptest.NewRequest("POST", "/", nil)
+	r.Header.Set("name", "foo")
+	assert.NotNil(t, Parse(r, &v))
+}
+
 func BenchmarkParseRaw(b *testing.B) {
 	r, err := http.NewRequest(http.MethodGet, "http://hello.com/a?name=hello&age=18&percent=3.4", nil)
 	if err != nil {
@@ -201,38 +320,3 @@ func BenchmarkParseAuto(b *testing.B) {
 		}
 	}
 }
-
-func TestParseHeaders(t *testing.T) {
-	type AnonymousStruct struct {
-		XRealIP string `header:"x-real-ip"`
-		Accept  string `header:"Accept,optional"`
-	}
-	v := struct {
-		Name          string   `header:"name,optional"`
-		Percent       string   `header:"percent"`
-		Addrs         []string `header:"addrs"`
-		XForwardedFor string   `header:"X-Forwarded-For,optional"`
-		AnonymousStruct
-	}{}
-	request, err := http.NewRequest("POST", "http://hello.com/", nil)
-	if err != nil {
-		t.Fatal(err)
-	}
-	request.Header.Set("name", "chenquan")
-	request.Header.Set("percent", "1")
-	request.Header.Add("addrs", "addr1")
-	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", "application/json")
-	err = ParseHeaders(request, &v)
-	if err != nil {
-		t.Fatal(err)
-	}
-	assert.Equal(t, "chenquan", v.Name)
-	assert.Equal(t, "1", v.Percent)
-	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, "application/json", v.Accept)
-}

rest/httpx/responses.go

@@ -24,7 +24,7 @@ func Error(w http.ResponseWriter, err error) {
 		return
 	}
 
-	code, body := errorHandler(err)
+	code, body := handler(err)
 	if body == nil {
 		w.WriteHeader(code)
 		return

rest/httpx/util.go

@@ -10,5 +10,6 @@ func GetRemoteAddr(r *http.Request) string {
 	if len(v) > 0 {
 		return v
 	}
+
 	return r.RemoteAddr
 }

rest/httpx/util_test.go

@@ -16,3 +16,10 @@ func TestGetRemoteAddr(t *testing.T) {
 	r.Header.Set(xForwardedFor, host)
 	assert.Equal(t, host, GetRemoteAddr(r))
 }
+
+func TestGetRemoteAddrNoHeader(t *testing.T) {
+	r, err := http.NewRequest(http.MethodGet, "/", strings.NewReader(""))
+	assert.Nil(t, err)
+
+	assert.True(t, len(GetRemoteAddr(r)) == 0)
+}

rest/internal/cors/handlers.go

@@ -0,0 +1,150 @@
+package cors
+
+import (
+	"bufio"
+	"errors"
+	"net"
+	"net/http"
+)
+
+const (
+	allowOrigin      = "Access-Control-Allow-Origin"
+	allOrigins       = "*"
+	allowMethods     = "Access-Control-Allow-Methods"
+	allowHeaders     = "Access-Control-Allow-Headers"
+	allowCredentials = "Access-Control-Allow-Credentials"
+	exposeHeaders    = "Access-Control-Expose-Headers"
+	requestMethod    = "Access-Control-Request-Method"
+	requestHeaders   = "Access-Control-Request-Headers"
+	allowHeadersVal  = "Content-Type, Origin, X-CSRF-Token, Authorization, AccessToken, Token, Range"
+	exposeHeadersVal = "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers"
+	methods          = "GET, HEAD, POST, PATCH, PUT, DELETE"
+	allowTrue        = "true"
+	maxAgeHeader     = "Access-Control-Max-Age"
+	maxAgeHeaderVal  = "86400"
+	varyHeader       = "Vary"
+	originHeader     = "Origin"
+)
+
+// NotAllowedHandler handles cross domain not allowed requests.
+// At most one origin can be specified, other origins are ignored if given, default to be *.
+func NotAllowedHandler(fn func(w http.ResponseWriter), origins ...string) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		gw := &guardedResponseWriter{w: w}
+		checkAndSetHeaders(gw, r, origins)
+		if fn != nil {
+			fn(gw)
+		}
+
+		if r.Method == http.MethodOptions {
+			gw.WriteHeader(http.StatusNoContent)
+		} else {
+			gw.WriteHeader(http.StatusNotFound)
+		}
+	})
+}
+
+// Middleware returns a middleware that adds CORS headers to the response.
+func Middleware(fn func(w http.Header), origins ...string) func(http.HandlerFunc) http.HandlerFunc {
+	return func(next http.HandlerFunc) http.HandlerFunc {
+		return func(w http.ResponseWriter, r *http.Request) {
+			checkAndSetHeaders(w, r, origins)
+			if fn != nil {
+				fn(w.Header())
+			}
+
+			if r.Method == http.MethodOptions {
+				w.WriteHeader(http.StatusNoContent)
+			} else {
+				next(w, r)
+			}
+		}
+	}
+}
+
+type guardedResponseWriter struct {
+	w           http.ResponseWriter
+	wroteHeader bool
+}
+
+func (w *guardedResponseWriter) Flush() {
+	if flusher, ok := w.w.(http.Flusher); ok {
+		flusher.Flush()
+	}
+}
+
+func (w *guardedResponseWriter) Header() http.Header {
+	return w.w.Header()
+}
+
+// Hijack implements the http.Hijacker interface.
+// This expands the Response to fulfill http.Hijacker if the underlying http.ResponseWriter supports it.
+func (w *guardedResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	if hijacked, ok := w.w.(http.Hijacker); ok {
+		return hijacked.Hijack()
+	}
+
+	return nil, nil, errors.New("server doesn't support hijacking")
+}
+
+func (w *guardedResponseWriter) Write(bytes []byte) (int, error) {
+	return w.w.Write(bytes)
+}
+
+func (w *guardedResponseWriter) WriteHeader(code int) {
+	if w.wroteHeader {
+		return
+	}
+
+	w.w.WriteHeader(code)
+	w.wroteHeader = true
+}
+
+func checkAndSetHeaders(w http.ResponseWriter, r *http.Request, origins []string) {
+	setVaryHeaders(w, r)
+
+	if len(origins) == 0 {
+		setHeader(w, allOrigins)
+		return
+	}
+
+	origin := r.Header.Get(originHeader)
+	if isOriginAllowed(origins, origin) {
+		setHeader(w, origin)
+	}
+}
+
+func isOriginAllowed(allows []string, origin string) bool {
+	for _, o := range allows {
+		if o == allOrigins {
+			return true
+		}
+
+		if o == origin {
+			return true
+		}
+	}
+
+	return false
+}
+
+func setHeader(w http.ResponseWriter, origin string) {
+	header := w.Header()
+	header.Set(allowOrigin, origin)
+	header.Set(allowMethods, methods)
+	header.Set(allowHeaders, allowHeadersVal)
+	header.Set(exposeHeaders, exposeHeadersVal)
+	if origin != allOrigins {
+		header.Set(allowCredentials, allowTrue)
+	}
+	header.Set(maxAgeHeader, maxAgeHeaderVal)
+}
+
+func setVaryHeaders(w http.ResponseWriter, r *http.Request) {
+	header := w.Header()
+	header.Add(varyHeader, originHeader)
+	if r.Method == http.MethodOptions {
+		header.Add(varyHeader, requestMethod)
+		header.Add(varyHeader, requestHeaders)
+	}
+}

rest/internal/cors/handlers_test.go

@@ -0,0 +1,178 @@
+package cors
+
+import (
+	"bufio"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCorsHandlerWithOrigins(t *testing.T) {
+	tests := []struct {
+		name      string
+		origins   []string
+		reqOrigin string
+		expect    string
+	}{
+		{
+			name:   "allow all origins",
+			expect: allOrigins,
+		},
+		{
+			name:      "allow one origin",
+			origins:   []string{"http://local"},
+			reqOrigin: "http://local",
+			expect:    "http://local",
+		},
+		{
+			name:      "allow many origins",
+			origins:   []string{"http://local", "http://remote"},
+			reqOrigin: "http://local",
+			expect:    "http://local",
+		},
+		{
+			name:      "allow all origins",
+			reqOrigin: "http://local",
+			expect:    "*",
+		},
+		{
+			name:      "allow many origins with all mark",
+			origins:   []string{"http://local", "http://remote", "*"},
+			reqOrigin: "http://another",
+			expect:    "http://another",
+		},
+		{
+			name:      "not allow origin",
+			origins:   []string{"http://local", "http://remote"},
+			reqOrigin: "http://another",
+		},
+	}
+
+	methods := []string{
+		http.MethodOptions,
+		http.MethodGet,
+		http.MethodPost,
+	}
+
+	for _, test := range tests {
+		for _, method := range methods {
+			test := test
+			t.Run(test.name+"-handler", func(t *testing.T) {
+				r := httptest.NewRequest(method, "http://localhost", nil)
+				r.Header.Set(originHeader, test.reqOrigin)
+				w := httptest.NewRecorder()
+				handler := NotAllowedHandler(nil, test.origins...)
+				handler.ServeHTTP(w, r)
+				if method == http.MethodOptions {
+					assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
+				} else {
+					assert.Equal(t, http.StatusNotFound, w.Result().StatusCode)
+				}
+				assert.Equal(t, test.expect, w.Header().Get(allowOrigin))
+			})
+			t.Run(test.name+"-handler-custom", func(t *testing.T) {
+				r := httptest.NewRequest(method, "http://localhost", nil)
+				r.Header.Set(originHeader, test.reqOrigin)
+				w := httptest.NewRecorder()
+				handler := NotAllowedHandler(func(w http.ResponseWriter) {
+					w.Header().Set("foo", "bar")
+				}, test.origins...)
+				handler.ServeHTTP(w, r)
+				if method == http.MethodOptions {
+					assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
+				} else {
+					assert.Equal(t, http.StatusNotFound, w.Result().StatusCode)
+				}
+				assert.Equal(t, test.expect, w.Header().Get(allowOrigin))
+				assert.Equal(t, "bar", w.Header().Get("foo"))
+			})
+		}
+	}
+
+	for _, test := range tests {
+		for _, method := range methods {
+			test := test
+			t.Run(test.name+"-middleware", func(t *testing.T) {
+				r := httptest.NewRequest(method, "http://localhost", nil)
+				r.Header.Set(originHeader, test.reqOrigin)
+				w := httptest.NewRecorder()
+				handler := Middleware(nil, test.origins...)(func(w http.ResponseWriter, r *http.Request) {
+					w.WriteHeader(http.StatusOK)
+				})
+				handler.ServeHTTP(w, r)
+				if method == http.MethodOptions {
+					assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
+				} else {
+					assert.Equal(t, http.StatusOK, w.Result().StatusCode)
+				}
+				assert.Equal(t, test.expect, w.Header().Get(allowOrigin))
+			})
+			t.Run(test.name+"-middleware-custom", func(t *testing.T) {
+				r := httptest.NewRequest(method, "http://localhost", nil)
+				r.Header.Set(originHeader, test.reqOrigin)
+				w := httptest.NewRecorder()
+				handler := Middleware(func(header http.Header) {
+					header.Set("foo", "bar")
+				}, test.origins...)(func(w http.ResponseWriter, r *http.Request) {
+					w.WriteHeader(http.StatusOK)
+				})
+				handler.ServeHTTP(w, r)
+				if method == http.MethodOptions {
+					assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
+				} else {
+					assert.Equal(t, http.StatusOK, w.Result().StatusCode)
+				}
+				assert.Equal(t, test.expect, w.Header().Get(allowOrigin))
+				assert.Equal(t, "bar", w.Header().Get("foo"))
+			})
+		}
+	}
+}
+
+func TestGuardedResponseWriter_Flush(t *testing.T) {
+	req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
+	handler := NotAllowedHandler(func(w http.ResponseWriter) {
+		w.Header().Set("X-Test", "test")
+		w.WriteHeader(http.StatusServiceUnavailable)
+		_, err := w.Write([]byte("content"))
+		assert.Nil(t, err)
+
+		flusher, ok := w.(http.Flusher)
+		assert.True(t, ok)
+		flusher.Flush()
+	}, "foo.com")
+
+	resp := httptest.NewRecorder()
+	handler.ServeHTTP(resp, req)
+	assert.Equal(t, http.StatusServiceUnavailable, resp.Code)
+	assert.Equal(t, "test", resp.Header().Get("X-Test"))
+	assert.Equal(t, "content", resp.Body.String())
+}
+
+func TestGuardedResponseWriter_Hijack(t *testing.T) {
+	resp := httptest.NewRecorder()
+	writer := &guardedResponseWriter{
+		w: resp,
+	}
+	assert.NotPanics(t, func() {
+		writer.Hijack()
+	})
+
+	writer = &guardedResponseWriter{
+		w: mockedHijackable{resp},
+	}
+	assert.NotPanics(t, func() {
+		writer.Hijack()
+	})
+}
+
+type mockedHijackable struct {
+	*httptest.ResponseRecorder
+}
+
+func (m mockedHijackable) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	return nil, nil, nil
+}

rest/internal/starter.go

@@ -5,31 +5,43 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/tal-tech/go-zero/core/logx"
 	"github.com/tal-tech/go-zero/core/proc"
 )
 
+// StartOption defines the method to customize http.Server.
+type StartOption func(srv *http.Server)
+
 // StartHttp starts a http server.
-func StartHttp(host string, port int, handler http.Handler) error {
+func StartHttp(host string, port int, handler http.Handler, opts ...StartOption) error {
 	return start(host, port, handler, func(srv *http.Server) error {
 		return srv.ListenAndServe()
-	})
+	}, opts...)
 }
 
 // StartHttps starts a https server.
-func StartHttps(host string, port int, certFile, keyFile string, handler http.Handler) error {
+func StartHttps(host string, port int, certFile, keyFile string, handler http.Handler,
+	opts ...StartOption) error {
 	return start(host, port, handler, func(srv *http.Server) error {
 		// certFile and keyFile are set in buildHttpsServer
 		return srv.ListenAndServeTLS(certFile, keyFile)
-	})
+	}, opts...)
 }
 
-func start(host string, port int, handler http.Handler, run func(srv *http.Server) error) (err error) {
+func start(host string, port int, handler http.Handler, run func(srv *http.Server) error,
+	opts ...StartOption) (err error) {
 	server := &http.Server{
 		Addr:    fmt.Sprintf("%s:%d", host, port),
 		Handler: handler,
 	}
+	for _, opt := range opts {
+		opt(server)
+	}
+
 	waitForCalled := proc.AddWrapUpListener(func() {
-		server.Shutdown(context.Background())
+		if e := server.Shutdown(context.Background()); err != nil {
+			logx.Error(e)
+		}
 	})
 	defer func() {
 		if err == http.ErrServerClosed {

rest/router/patrouter_test.go

@@ -105,19 +105,22 @@ func TestPatRouter(t *testing.T) {
 		t.Run(test.method+":"+test.path, func(t *testing.T) {
 			routed := false
 			router := NewRouter()
-			err := router.Handle(test.method, "/a/:b", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				routed = true
-				assert.Equal(t, 1, len(pathvar.Vars(r)))
-			}))
+			err := router.Handle(test.method, "/a/:b", http.HandlerFunc(
+				func(w http.ResponseWriter, r *http.Request) {
+					routed = true
+					assert.Equal(t, 1, len(pathvar.Vars(r)))
+				}))
 			assert.Nil(t, err)
-			err = router.Handle(test.method, "/a/b/c", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				routed = true
-				assert.Nil(t, pathvar.Vars(r))
-			}))
+			err = router.Handle(test.method, "/a/b/c", http.HandlerFunc(
+				func(w http.ResponseWriter, r *http.Request) {
+					routed = true
+					assert.Nil(t, pathvar.Vars(r))
+				}))
 			assert.Nil(t, err)
-			err = router.Handle(test.method, "/b/c", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				routed = true
-			}))
+			err = router.Handle(test.method, "/b/c", http.HandlerFunc(
+				func(w http.ResponseWriter, r *http.Request) {
+					routed = true
+				}))
 			assert.Nil(t, err)
 
 			w := new(mockedResponseWriter)

rest/server.go

@@ -1,27 +1,27 @@
 package rest
 
 import (
+	"crypto/tls"
 	"log"
 	"net/http"
+	"path"
+	"time"
 
 	"github.com/tal-tech/go-zero/core/logx"
 	"github.com/tal-tech/go-zero/rest/handler"
 	"github.com/tal-tech/go-zero/rest/httpx"
+	"github.com/tal-tech/go-zero/rest/internal/cors"
 	"github.com/tal-tech/go-zero/rest/router"
 )
 
 type (
-	runOptions struct {
-		start func(*engine) error
-	}
-
 	// RunOption defines the method to customize a Server.
 	RunOption func(*Server)
 
 	// A Server is a http server.
 	Server struct {
-		ngin *engine
-		opts runOptions
+		ngin   *engine
+		router httpx.Router
 	}
 )
 
@@ -45,12 +45,8 @@ func NewServer(c RestConf, opts ...RunOption) (*Server, error) {
 	}
 
 	server := &Server{
-		ngin: newEngine(c),
-		opts: runOptions{
-			start: func(srv *engine) error {
-				return srv.Start()
-			},
-		},
+		ngin:   newEngine(c),
+		router: router.NewRouter(),
 	}
 
 	for _, opt := range opts {
@@ -68,7 +64,7 @@ func (s *Server) AddRoutes(rs []Route, opts ...RouteOption) {
 	for _, opt := range opts {
 		opt(&r)
 	}
-	s.ngin.AddRoutes(r)
+	s.ngin.addRoutes(r)
 }
 
 // AddRoute adds given route into the Server.
@@ -80,7 +76,7 @@ func (s *Server) AddRoute(r Route, opts ...RouteOption) {
 // Graceful shutdown is enabled by default.
 // Use proc.SetTimeToForceQuit to customize the graceful shutdown period.
 func (s *Server) Start() {
-	handleError(s.opts.start(s.ngin))
+	handleError(s.ngin.start(s.router))
 }
 
 // Stop stops the Server.
@@ -100,6 +96,24 @@ func ToMiddleware(handler func(next http.Handler) http.Handler) Middleware {
 	}
 }
 
+// WithCors returns a func to enable CORS for given origin, or default to all origins (*).
+func WithCors(origin ...string) RunOption {
+	return func(server *Server) {
+		server.router.SetNotAllowedHandler(cors.NotAllowedHandler(nil, origin...))
+		server.Use(cors.Middleware(nil, origin...))
+	}
+}
+
+// WithCustomCors returns a func to enable CORS for given origin, or default to all origins (*),
+// fn lets caller customizing the response.
+func WithCustomCors(middlewareFn func(header http.Header), notAllowedFn func(http.ResponseWriter),
+	origin ...string) RunOption {
+	return func(server *Server) {
+		server.router.SetNotAllowedHandler(cors.NotAllowedHandler(notAllowedFn, origin...))
+		server.Use(cors.Middleware(middlewareFn, origin...))
+	}
+}
+
 // WithJwt returns a func to enable jwt authentication in given route.
 func WithJwt(secret string) RouteOption {
 	return func(r *featuredRoutes) {
@@ -148,16 +162,32 @@ func WithMiddleware(middleware Middleware, rs ...Route) []Route {
 
 // WithNotFoundHandler returns a RunOption with not found handler set to given handler.
 func WithNotFoundHandler(handler http.Handler) RunOption {
-	rt := router.NewRouter()
-	rt.SetNotFoundHandler(handler)
-	return WithRouter(rt)
+	return func(server *Server) {
+		server.router.SetNotFoundHandler(handler)
+	}
 }
 
 // WithNotAllowedHandler returns a RunOption with not allowed handler set to given handler.
 func WithNotAllowedHandler(handler http.Handler) RunOption {
-	rt := router.NewRouter()
-	rt.SetNotAllowedHandler(handler)
-	return WithRouter(rt)
+	return func(server *Server) {
+		server.router.SetNotAllowedHandler(handler)
+	}
+}
+
+// WithPrefix adds group as a prefix to the route paths.
+func WithPrefix(group string) RouteOption {
+	return func(r *featuredRoutes) {
+		var routes []Route
+		for _, rt := range r.routes {
+			p := path.Join(group, rt.Path)
+			routes = append(routes, Route{
+				Method:  rt.Method,
+				Path:    p,
+				Handler: rt.Handler,
+			})
+		}
+		r.routes = routes
+	}
 }
 
 // WithPriority returns a RunOption with priority.
@@ -170,9 +200,7 @@ func WithPriority() RouteOption {
 // WithRouter returns a RunOption that make server run with given router.
 func WithRouter(router httpx.Router) RunOption {
 	return func(server *Server) {
-		server.opts.start = func(srv *engine) error {
-			return srv.StartWithRouter(router)
-		}
+		server.router = router
 	}
 }
 
@@ -186,17 +214,31 @@ func WithSignature(signature SignatureConf) RouteOption {
 	}
 }
 
+// WithTimeout returns a RouteOption to set timeout with given value.
+func WithTimeout(timeout time.Duration) RouteOption {
+	return func(r *featuredRoutes) {
+		r.timeout = timeout
+	}
+}
+
+// WithTLSConfig returns a RunOption that with given tls config.
+func WithTLSConfig(cfg *tls.Config) RunOption {
+	return func(srv *Server) {
+		srv.ngin.setTlsConfig(cfg)
+	}
+}
+
 // WithUnauthorizedCallback returns a RunOption that with given unauthorized callback set.
 func WithUnauthorizedCallback(callback handler.UnauthorizedCallback) RunOption {
-	return func(engine *Server) {
-		engine.ngin.SetUnauthorizedCallback(callback)
+	return func(srv *Server) {
+		srv.ngin.setUnauthorizedCallback(callback)
 	}
 }
 
 // WithUnsignedCallback returns a RunOption that with given unsigned callback set.
 func WithUnsignedCallback(callback handler.UnsignedCallback) RunOption {
-	return func(engine *Server) {
-		engine.ngin.SetUnsignedCallback(callback)
+	return func(srv *Server) {
+		srv.ngin.setUnsignedCallback(callback)
 	}
 }
 

rest/server_test.go

@@ -1,11 +1,13 @@
 package rest
 
 import (
+	"crypto/tls"
 	"fmt"
 	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/tal-tech/go-zero/core/conf"
@@ -20,11 +22,6 @@ Port: 54321
 `
 	var cnf RestConf
 	assert.Nil(t, conf.LoadConfigFromYamlBytes([]byte(configYaml), &cnf))
-	failStart := func(server *Server) {
-		server.opts.start = func(e *engine) error {
-			return http.ErrServerClosed
-		}
-	}
 
 	tests := []struct {
 		c    RestConf
@@ -33,38 +30,40 @@ Port: 54321
 	}{
 		{
 			c:    RestConf{},
-			opts: []RunOption{failStart},
+			opts: []RunOption{WithRouter(mockedRouter{}), WithCors()},
 			fail: true,
 		},
 		{
 			c:    cnf,
-			opts: []RunOption{failStart},
+			opts: []RunOption{WithRouter(mockedRouter{})},
 		},
 		{
 			c:    cnf,
-			opts: []RunOption{WithNotAllowedHandler(nil), failStart},
+			opts: []RunOption{WithRouter(mockedRouter{}), WithNotAllowedHandler(nil)},
 		},
 		{
 			c:    cnf,
-			opts: []RunOption{WithNotFoundHandler(nil), failStart},
+			opts: []RunOption{WithNotFoundHandler(nil), WithRouter(mockedRouter{})},
 		},
 		{
 			c:    cnf,
-			opts: []RunOption{WithUnauthorizedCallback(nil), failStart},
+			opts: []RunOption{WithUnauthorizedCallback(nil), WithRouter(mockedRouter{})},
 		},
 		{
 			c:    cnf,
-			opts: []RunOption{WithUnsignedCallback(nil), failStart},
+			opts: []RunOption{WithUnsignedCallback(nil), WithRouter(mockedRouter{})},
 		},
 	}
 
 	for _, test := range tests {
-		srv, err := NewServer(test.c, test.opts...)
+		var srv *Server
+		var err error
 		if test.fail {
+			_, err = NewServer(test.c, test.opts...)
 			assert.NotNil(t, err)
-		}
-		if err != nil {
 			continue
+		} else {
+			srv = MustNewServer(test.c, test.opts...)
 		}
 
 		srv.Use(ToMiddleware(func(next http.Handler) http.Handler {
@@ -78,8 +77,21 @@ Port: 54321
 			Handler: nil,
 		}, WithJwt("thesecret"), WithSignature(SignatureConf{}),
 			WithJwtTransition("preivous", "thenewone"))
-		srv.Start()
-		srv.Stop()
+
+		func() {
+			defer func() {
+				p := recover()
+				switch v := p.(type) {
+				case error:
+					assert.Equal(t, "foo", v.Error())
+				default:
+					t.Fail()
+				}
+			}()
+
+			srv.Start()
+			srv.Stop()
+		}()
 	}
 }
 
@@ -178,6 +190,9 @@ func TestMultiMiddlewares(t *testing.T) {
 				next.ServeHTTP(w, r)
 			}
 		},
+		ToMiddleware(func(next http.Handler) http.Handler {
+			return next
+		}),
 	}, Route{
 		Method:  http.MethodGet,
 		Path:    "/first/:name/:year",
@@ -212,8 +227,105 @@ func TestMultiMiddlewares(t *testing.T) {
 	}, m)
 }
 
+func TestWithPrefix(t *testing.T) {
+	fr := featuredRoutes{
+		routes: []Route{
+			{
+				Path: "/hello",
+			},
+			{
+				Path: "/world",
+			},
+		},
+	}
+	WithPrefix("/api")(&fr)
+	var vals []string
+	for _, r := range fr.routes {
+		vals = append(vals, r.Path)
+	}
+	assert.EqualValues(t, []string{"/api/hello", "/api/world"}, vals)
+}
+
 func TestWithPriority(t *testing.T) {
 	var fr featuredRoutes
 	WithPriority()(&fr)
 	assert.True(t, fr.priority)
 }
+
+func TestWithTimeout(t *testing.T) {
+	var fr featuredRoutes
+	WithTimeout(time.Hour)(&fr)
+	assert.Equal(t, time.Hour, fr.timeout)
+}
+
+func TestWithTLSConfig(t *testing.T) {
+	const configYaml = `
+Name: foo
+Port: 54321
+`
+	var cnf RestConf
+	assert.Nil(t, conf.LoadConfigFromYamlBytes([]byte(configYaml), &cnf))
+
+	testConfig := &tls.Config{
+		CipherSuites: []uint16{
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+		},
+	}
+
+	testCases := []struct {
+		c    RestConf
+		opts []RunOption
+		res  *tls.Config
+	}{
+		{
+			c:    cnf,
+			opts: []RunOption{WithTLSConfig(testConfig)},
+			res:  testConfig,
+		},
+		{
+			c:    cnf,
+			opts: []RunOption{WithUnsignedCallback(nil)},
+			res:  nil,
+		},
+	}
+
+	for _, testCase := range testCases {
+		srv, err := NewServer(testCase.c, testCase.opts...)
+		assert.Nil(t, err)
+		assert.Equal(t, srv.ngin.tlsConfig, testCase.res)
+	}
+}
+
+func TestWithCors(t *testing.T) {
+	const configYaml = `
+Name: foo
+Port: 54321
+`
+	var cnf RestConf
+	assert.Nil(t, conf.LoadConfigFromYamlBytes([]byte(configYaml), &cnf))
+	rt := router.NewRouter()
+	srv, err := NewServer(cnf, WithRouter(rt))
+	assert.Nil(t, err)
+
+	opt := WithCors("local")
+	opt(srv)
+}
+
+func TestWithCustomCors(t *testing.T) {
+	const configYaml = `
+Name: foo
+Port: 54321
+`
+	var cnf RestConf
+	assert.Nil(t, conf.LoadConfigFromYamlBytes([]byte(configYaml), &cnf))
+	rt := router.NewRouter()
+	srv, err := NewServer(cnf, WithRouter(rt))
+	assert.Nil(t, err)
+
+	opt := WithCustomCors(func(header http.Header) {
+		header.Set("foo", "bar")
+	}, func(w http.ResponseWriter) {
+		w.WriteHeader(http.StatusOK)
+	}, "local")
+	opt(srv)
+}

rest/types.go

@@ -1,6 +1,9 @@
 package rest
 
-import "net/http"
+import (
+	"net/http"
+	"time"
+)
 
 type (
 	// Middleware defines the middleware method.
@@ -28,6 +31,7 @@ type (
 	}
 
 	featuredRoutes struct {
+		timeout   time.Duration
 		priority  bool
 		jwt       jwtSetting
 		signature signatureSetting

tools/goctl/api/dartgen/gen.go

@@ -25,6 +25,7 @@ func DartCommand(c *cli.Context) error {
 		return err
 	}
 
+	api.Service = api.Service.JoinPrefix()
 	if !strings.HasSuffix(dir, "/") {
 		dir = dir + "/"
 	}

tools/goctl/api/docgen/gen.go

@@ -42,14 +42,15 @@ func DocCommand(c *cli.Context) error {
 		return err
 	}
 
-	for _, path := range files {
-		api, err := parser.Parse(path)
+	for _, p := range files {
+		api, err := parser.Parse(p)
 		if err != nil {
-			return fmt.Errorf("parse file: %s, err: %s", path, err.Error())
+			return fmt.Errorf("parse file: %s, err: %s", p, err.Error())
 		}
 
-		err = genDoc(api, filepath.Dir(filepath.Join(outputDir, path[len(dir):])),
-			strings.Replace(path[len(filepath.Dir(path)):], ".api", ".md", 1))
+		api.Service = api.Service.JoinPrefix()
+		err = genDoc(api, filepath.Dir(filepath.Join(outputDir, p[len(dir):])),
+			strings.Replace(p[len(filepath.Dir(p)):], ".api", ".md", 1))
 		if err != nil {
 			return err
 		}

tools/goctl/api/gogen/genlogic.go

@@ -3,8 +3,10 @@ package gogen
 import (
 	"fmt"
 	"path"
+	"strconv"
 	"strings"
 
+	"github.com/tal-tech/go-zero/tools/goctl/api/parser/g4/gen/api"
 	"github.com/tal-tech/go-zero/tools/goctl/api/spec"
 	"github.com/tal-tech/go-zero/tools/goctl/config"
 	ctlutil "github.com/tal-tech/go-zero/tools/goctl/util"
@@ -64,12 +66,8 @@ func genLogicByRoute(dir, rootPkg string, cfg *config.Config, group spec.Group,
 	var requestString string
 	if len(route.ResponseTypeName()) > 0 {
 		resp := responseGoTypeName(route, typesPacket)
-		responseString = "(" + resp + ", error)"
-		if strings.HasPrefix(resp, "*") {
-			returnString = fmt.Sprintf("return &%s{}, nil", strings.TrimPrefix(resp, "*"))
-		} else {
-			returnString = fmt.Sprintf("return %s{}, nil", resp)
-		}
+		responseString = "(resp " + resp + ", err error)"
+		returnString = "return"
 	} else {
 		responseString = "error"
 		returnString = "return nil"
@@ -116,9 +114,47 @@ func genLogicImports(route spec.Route, parentPkg string) string {
 	var imports []string
 	imports = append(imports, `"context"`+"\n")
 	imports = append(imports, fmt.Sprintf("\"%s\"", ctlutil.JoinPackages(parentPkg, contextDir)))
-	if len(route.ResponseTypeName()) > 0 || len(route.RequestTypeName()) > 0 {
+	if shallImportTypesPackage(route) {
 		imports = append(imports, fmt.Sprintf("\"%s\"\n", ctlutil.JoinPackages(parentPkg, typesDir)))
 	}
 	imports = append(imports, fmt.Sprintf("\"%s/core/logx\"", vars.ProjectOpenSourceURL))
 	return strings.Join(imports, "\n\t")
 }
+
+func onlyPrimitiveTypes(val string) bool {
+	fields := strings.FieldsFunc(val, func(r rune) bool {
+		return r == '[' || r == ']' || r == ' '
+	})
+
+	for _, field := range fields {
+		if field == "map" {
+			continue
+		}
+		// ignore array dimension number, like [5]int
+		if _, err := strconv.Atoi(field); err == nil {
+			continue
+		}
+		if !api.IsBasicType(field) {
+			return false
+		}
+	}
+
+	return true
+}
+
+func shallImportTypesPackage(route spec.Route) bool {
+	if len(route.RequestTypeName()) > 0 {
+		return true
+	}
+
+	respTypeName := route.ResponseTypeName()
+	if len(respTypeName) == 0 {
+		return false
+	}
+
+	if onlyPrimitiveTypes(respTypeName) {
+		return false
+	}
+
+	return true
+}

tools/goctl/api/gogen/genroutes.go

@@ -27,24 +27,27 @@ import (
 	{{.importPackages}}
 )
 
-func RegisterHandlers(engine *rest.Server, serverCtx *svc.ServiceContext) {
+func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 	{{.routesAdditions}}
 }
 `
 	routesAdditionTemplate = `
-	engine.AddRoutes(
-		{{.routes}} {{.jwt}}{{.signature}}
+	server.AddRoutes(
+		{{.routes}} {{.jwt}}{{.signature}} {{.prefix}}
 	)
 `
 )
 
 var mapping = map[string]string{
-	"delete": "http.MethodDelete",
-	"get":    "http.MethodGet",
-	"head":   "http.MethodHead",
-	"post":   "http.MethodPost",
-	"put":    "http.MethodPut",
-	"patch":  "http.MethodPatch",
+	"delete":  "http.MethodDelete",
+	"get":     "http.MethodGet",
+	"head":    "http.MethodHead",
+	"post":    "http.MethodPost",
+	"put":     "http.MethodPut",
+	"patch":   "http.MethodPatch",
+	"connect": "http.MethodConnect",
+	"options": "http.MethodOptions",
+	"trace":   "http.MethodTrace",
 }
 
 type (
@@ -54,6 +57,7 @@ type (
 		signatureEnabled bool
 		authName         string
 		middlewares      []string
+		prefix           string
 	}
 	route struct {
 		method  string
@@ -87,10 +91,14 @@ func genRoutes(dir, rootPkg string, cfg *config.Config, api *spec.ApiSpec) error
 		if g.jwtEnabled {
 			jwt = fmt.Sprintf("\n rest.WithJwt(serverCtx.Config.%s.AccessSecret),", g.authName)
 		}
-		var signature string
+		var signature, prefix string
 		if g.signatureEnabled {
 			signature = "\n rest.WithSignature(serverCtx.Config.Signature),"
 		}
+		if len(g.prefix) > 0 {
+			prefix = fmt.Sprintf(`
+rest.WithPrefix("%s"),`, g.prefix)
+		}
 
 		var routes string
 		if len(g.middlewares) > 0 {
@@ -111,6 +119,7 @@ func genRoutes(dir, rootPkg string, cfg *config.Config, api *spec.ApiSpec) error
 			"routes":    routes,
 			"jwt":       jwt,
 			"signature": signature,
+			"prefix":    prefix,
 		}); err != nil {
 			return err
 		}
@@ -200,6 +209,13 @@ func getRoutes(api *spec.ApiSpec) ([]group, error) {
 			groupedRoutes.middlewares = append(groupedRoutes.middlewares,
 				strings.Split(middleware, ",")...)
 		}
+		prefix := g.GetAnnotation(spec.RoutePrefixKey)
+		prefix = strings.ReplaceAll(prefix, `"`, "")
+		prefix = strings.TrimSpace(prefix)
+		if len(prefix) > 0 {
+			prefix = path.Join("/", prefix)
+			groupedRoutes.prefix = prefix
+		}
 		routes = append(routes, groupedRoutes)
 	}
 

tools/goctl/api/javagen/gen.go

@@ -28,6 +28,7 @@ func JavaCommand(c *cli.Context) error {
 		return err
 	}
 
+	api.Service = api.Service.JoinPrefix()
 	packetName := strings.TrimSuffix(api.Service.Name, "-api")
 	logx.Must(util.MkdirIfNotExist(dir))
 	logx.Must(genPacket(dir, packetName, api))

tools/goctl/api/ktgen/cmd.go

@@ -27,6 +27,7 @@ func KtCommand(c *cli.Context) error {
 		return e
 	}
 
+	api.Service = api.Service.JoinPrefix()
 	e = genBase(dir, pkg, api)
 	if e != nil {
 		return e

tools/goctl/api/new/newservice.go

@@ -24,7 +24,7 @@ type Response {
 
 service {{.name}}-api {
   @handler {{.handler}}Handler
-  get /from/:name(Request) returns (Response);
+  get /from/:name(Request) returns (Response)
 }
 `
 

tools/goctl/api/parser/g4/ApiParser.g4

@@ -63,11 +63,11 @@ serviceApi:     {match(p,"service")}serviceToken=ID serviceName lbrace='{' servi
 serviceRoute:   atDoc? (atServer|atHandler) route;
 atDoc:          ATDOC lp='('? ((kvLit+)|STRING) rp=')'?;
 atHandler:      ATHANDLER ID;
-route:          {checkHttpMethod(p)}httpMethod=ID path request=body? returnToken=ID? response=replybody?;
+route:          {checkHTTPMethod(p)}httpMethod=ID path request=body? returnToken=ID? response=replybody?;
 body:           lp='(' (ID)? rp=')';
 replybody:      lp='(' dataType? rp=')';
 // kv
 kvLit:          key=ID {checkKeyValue(p)}value=LINE_VALUE;
 
 serviceName:    (ID '-'?)+;
-path:           (('/' (ID ('-' ID)*))|('/:' (ID ('-' ID)?)))+;
+path:           (('/' (ID ('-' ID)*))|('/:' (ID ('-' ID)?)))+ | '/';

tools/goctl/api/parser/g4/ast/api.go

@@ -2,11 +2,14 @@ package ast
 
 import (
 	"fmt"
+	"path"
 	"sort"
 
 	"github.com/tal-tech/go-zero/tools/goctl/api/parser/g4/gen/api"
 )
 
+const prefixKey = "prefix"
+
 // Api describes syntax for api
 type Api struct {
 	LinePrefix string
@@ -49,8 +52,15 @@ func (v *ApiVisitor) acceptService(root, final *Api) {
 		}
 		v.duplicateServerItemCheck(service)
 
+		var prefix string
+		if service.AtServer != nil {
+			p := service.AtServer.Kv.Get(prefixKey)
+			if p != nil {
+				prefix = p.Text()
+			}
+		}
 		for _, route := range service.ServiceApi.ServiceRoute {
-			uniqueRoute := fmt.Sprintf("%s %s", route.Route.Method.Text(), route.Route.Path.Text())
+			uniqueRoute := fmt.Sprintf("%s %s", route.Route.Method.Text(), path.Join(prefix, route.Route.Path.Text()))
 			if _, ok := final.routeM[uniqueRoute]; ok {
 				v.panic(route.Route.Method, fmt.Sprintf("duplicate route '%s'", uniqueRoute))
 			}

tools/goctl/api/parser/g4/ast/apiparser.go

@@ -3,6 +3,7 @@ package ast
 import (
 	"fmt"
 	"io/ioutil"
+	"path"
 	"path/filepath"
 	"strings"
 
@@ -113,13 +114,13 @@ func (p *Parser) parse(filename, content string) (*Api, error) {
 	apiAstList = append(apiAstList, root)
 	for _, imp := range root.Import {
 		dir := filepath.Dir(p.src)
-		path := filepath.Join(dir, imp.Value.Text())
-		data, err := p.readContent(path)
+		imp := filepath.Join(dir, imp.Value.Text())
+		data, err := p.readContent(imp)
 		if err != nil {
 			return nil, err
 		}
 
-		nestedApi, err := p.invoke(path, data)
+		nestedApi, err := p.invoke(imp, data)
 		if err != nil {
 			return nil, err
 		}
@@ -196,8 +197,8 @@ func (p *Parser) valid(mainApi, nestedApi *Api) error {
 			if handler.IsNotNil() {
 				handlerName := handler.Text()
 				handlerMap[handlerName] = Holder
-				path := fmt.Sprintf("%s://%s", g.Route.Method.Text(), g.Route.Path.Text())
-				routeMap[path] = Holder
+				route := fmt.Sprintf("%s://%s", g.Route.Method.Text(), g.Route.Path.Text())
+				routeMap[route] = Holder
 			}
 		}
 
@@ -239,6 +240,13 @@ func (p *Parser) valid(mainApi, nestedApi *Api) error {
 
 func (p *Parser) duplicateRouteCheck(nestedApi *Api, mainHandlerMap, mainRouteMap map[string]PlaceHolder) error {
 	for _, each := range nestedApi.Service {
+		var prefix string
+		if each.AtServer != nil {
+			p := each.AtServer.Kv.Get(prefixKey)
+			if p != nil {
+				prefix = p.Text()
+			}
+		}
 		for _, r := range each.ServiceApi.ServiceRoute {
 			handler := r.GetHandler()
 			if !handler.IsNotNil() {
@@ -250,8 +258,8 @@ func (p *Parser) duplicateRouteCheck(nestedApi *Api, mainHandlerMap, mainRouteMa
 					nestedApi.LinePrefix, handler.Line(), handler.Column(), handler.Text())
 			}
 
-			path := fmt.Sprintf("%s://%s", r.Route.Method.Text(), r.Route.Path.Text())
-			if _, ok := mainRouteMap[path]; ok {
+			p := fmt.Sprintf("%s://%s", r.Route.Method.Text(), path.Join(prefix, r.Route.Path.Text()))
+			if _, ok := mainRouteMap[p]; ok {
 				return fmt.Errorf("%s line %d:%d duplicate route '%s'",
 					nestedApi.LinePrefix, r.Route.Method.Line(), r.Route.Method.Column(), r.Route.Method.Text()+" "+r.Route.Path.Text())
 			}

tools/goctl/api/parser/g4/ast/service.go

@@ -212,24 +212,40 @@ func (v *ApiVisitor) VisitRoute(ctx *api.RouteContext) interface{} {
 // VisitBody implements from api.BaseApiParserVisitor
 func (v *ApiVisitor) VisitBody(ctx *api.BodyContext) interface{} {
 	if ctx.ID() == nil {
+		if v.debug {
+			msg := fmt.Sprintf(
+				`%s line %d:  expr "()" is deprecated, if there has no request body, please omit it`,
+				v.prefix,
+				ctx.GetStart().GetLine(),
+			)
+			v.log.Warning(msg)
+		}
 		return nil
 	}
 
-	idRxpr := v.newExprWithTerminalNode(ctx.ID())
-	if api.IsGolangKeyWord(idRxpr.Text()) {
-		v.panic(idRxpr, fmt.Sprintf("expecting 'ID', but found golang keyword '%s'", idRxpr.Text()))
+	idExpr := v.newExprWithTerminalNode(ctx.ID())
+	if api.IsGolangKeyWord(idExpr.Text()) {
+		v.panic(idExpr, fmt.Sprintf("expecting 'ID', but found golang keyword '%s'", idExpr.Text()))
 	}
 
 	return &Body{
 		Lp:   v.newExprWithToken(ctx.GetLp()),
 		Rp:   v.newExprWithToken(ctx.GetRp()),
-		Name: &Literal{Literal: idRxpr},
+		Name: &Literal{Literal: idExpr},
 	}
 }
 
 // VisitReplybody implements from api.BaseApiParserVisitor
 func (v *ApiVisitor) VisitReplybody(ctx *api.ReplybodyContext) interface{} {
 	if ctx.DataType() == nil {
+		if v.debug {
+			msg := fmt.Sprintf(
+				`%s line %d:  expr "returns ()" or "()" is deprecated, if there has no response body, please omit it`,
+				v.prefix,
+				ctx.GetStart().GetLine(),
+			)
+			v.log.Warning(msg)
+		}
 		return nil
 	}
 
@@ -251,11 +267,8 @@ func (v *ApiVisitor) VisitReplybody(ctx *api.ReplybodyContext) interface{} {
 		}
 	case *Literal:
 		lit := dataType.Literal.Text()
-		if api.IsGolangKeyWord(dataType.Literal.Text()) {
-			v.panic(dataType.Literal, fmt.Sprintf("expecting 'ID', but found golang keyword '%s'", dataType.Literal.Text()))
-		}
-		if api.IsBasicType(lit) {
-			v.panic(dt.Expr(), fmt.Sprintf("unsupport %s", dt.Expr().Text()))
+		if api.IsGolangKeyWord(lit) {
+			v.panic(dataType.Literal, fmt.Sprintf("expecting 'ID', but found golang keyword '%s'", lit))
 		}
 	default:
 		v.panic(dt.Expr(), fmt.Sprintf("unsupport %s", dt.Expr().Text()))

tools/goctl/api/parser/g4/gen/api/apiparser_base_visitor.go

@@ -1,5 +1,3 @@
-// Code generated from tools/goctl/api/parser/g4/ApiParser.g4 by ANTLR 4.9. DO NOT EDIT.
-
 package api // ApiParser
 import "github.com/zeromicro/antlr"
 

tools/goctl/api/parser/g4/gen/api/apiparser_lexer.go

@@ -1,5 +1,3 @@
-// Code generated from tools/goctl/api/parser/g4/ApiParser.g4 by ANTLR 4.9. DO NOT EDIT.
-
 package api
 
 import (
@@ -10,10 +8,8 @@ import (
 )
 
 // Suppress unused import error
-var (
-	_ = fmt.Printf
-	_ = unicode.IsLetter
-)
+var _ = fmt.Printf
+var _ = unicode.IsLetter
 
 var serializedLexerAtn = []uint16{
 	3, 24715, 42794, 33075, 47597, 16764, 15335, 30598, 22884, 2, 25, 266,

tools/goctl/api/parser/g4/gen/api/apiparser_parser1.go

@@ -0,0 +1,615 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 1
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+func (s *SyntaxLitContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *SyntaxLitContext) GetSyntaxToken() antlr.Token { return s.syntaxToken }
+
+func (s *SyntaxLitContext) GetAssign() antlr.Token { return s.assign }
+
+func (s *SyntaxLitContext) GetVersion() antlr.Token { return s.version }
+
+func (s *SyntaxLitContext) SetSyntaxToken(v antlr.Token) { s.syntaxToken = v }
+
+func (s *SyntaxLitContext) SetAssign(v antlr.Token) { s.assign = v }
+
+func (s *SyntaxLitContext) SetVersion(v antlr.Token) { s.version = v }
+
+func (s *SyntaxLitContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *SyntaxLitContext) STRING() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserSTRING, 0)
+}
+
+func (s *SyntaxLitContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *SyntaxLitContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *SyntaxLitContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitSyntaxLit(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) SyntaxLit() (localctx ISyntaxLitContext) {
+	localctx = NewSyntaxLitContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 4, ApiParserParserRULE_syntaxLit)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "syntax")
+	{
+		p.SetState(88)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*SyntaxLitContext).syntaxToken = _m
+	}
+	{
+		p.SetState(89)
+
+		var _m = p.Match(ApiParserParserT__0)
+
+		localctx.(*SyntaxLitContext).assign = _m
+	}
+	checkVersion(p)
+	{
+		p.SetState(91)
+
+		var _m = p.Match(ApiParserParserSTRING)
+
+		localctx.(*SyntaxLitContext).version = _m
+	}
+
+	return localctx
+}
+
+// IImportSpecContext is an interface to support dynamic dispatch.
+type IImportSpecContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsImportSpecContext differentiates from other interfaces.
+	IsImportSpecContext()
+}
+
+type ImportSpecContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyImportSpecContext() *ImportSpecContext {
+	var p = new(ImportSpecContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_importSpec
+	return p
+}
+
+func (*ImportSpecContext) IsImportSpecContext() {}
+
+func NewImportSpecContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ImportSpecContext {
+	var p = new(ImportSpecContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_importSpec
+
+	return p
+}
+
+func (s *ImportSpecContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ImportSpecContext) ImportLit() IImportLitContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IImportLitContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IImportLitContext)
+}
+
+func (s *ImportSpecContext) ImportBlock() IImportBlockContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IImportBlockContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IImportBlockContext)
+}
+
+func (s *ImportSpecContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ImportSpecContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ImportSpecContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitImportSpec(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ImportSpec() (localctx IImportSpecContext) {
+	localctx = NewImportSpecContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 6, ApiParserParserRULE_importSpec)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(95)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 2, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		{
+			p.SetState(93)
+			p.ImportLit()
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(94)
+			p.ImportBlock()
+		}
+
+	}
+
+	return localctx
+}
+
+// IImportLitContext is an interface to support dynamic dispatch.
+type IImportLitContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetImportToken returns the importToken token.
+	GetImportToken() antlr.Token
+
+	// SetImportToken sets the importToken token.
+	SetImportToken(antlr.Token)
+
+	// IsImportLitContext differentiates from other interfaces.
+	IsImportLitContext()
+}
+
+type ImportLitContext struct {
+	*antlr.BaseParserRuleContext
+	parser      antlr.Parser
+	importToken antlr.Token
+}
+
+func NewEmptyImportLitContext() *ImportLitContext {
+	var p = new(ImportLitContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_importLit
+	return p
+}
+
+func (*ImportLitContext) IsImportLitContext() {}
+
+func NewImportLitContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ImportLitContext {
+	var p = new(ImportLitContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_importLit
+
+	return p
+}
+
+func (s *ImportLitContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ImportLitContext) GetImportToken() antlr.Token { return s.importToken }
+
+func (s *ImportLitContext) SetImportToken(v antlr.Token) { s.importToken = v }
+
+func (s *ImportLitContext) ImportValue() IImportValueContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IImportValueContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IImportValueContext)
+}
+
+func (s *ImportLitContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *ImportLitContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ImportLitContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ImportLitContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitImportLit(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ImportLit() (localctx IImportLitContext) {
+	localctx = NewImportLitContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 8, ApiParserParserRULE_importLit)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "import")
+	{
+		p.SetState(98)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*ImportLitContext).importToken = _m
+	}
+	{
+		p.SetState(99)
+		p.ImportValue()
+	}
+
+	return localctx
+}
+
+// IImportBlockContext is an interface to support dynamic dispatch.
+type IImportBlockContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetImportToken returns the importToken token.
+	GetImportToken() antlr.Token
+
+	// SetImportToken sets the importToken token.
+	SetImportToken(antlr.Token)
+
+	// IsImportBlockContext differentiates from other interfaces.
+	IsImportBlockContext()
+}
+
+type ImportBlockContext struct {
+	*antlr.BaseParserRuleContext
+	parser      antlr.Parser
+	importToken antlr.Token
+}
+
+func NewEmptyImportBlockContext() *ImportBlockContext {
+	var p = new(ImportBlockContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_importBlock
+	return p
+}
+
+func (*ImportBlockContext) IsImportBlockContext() {}
+
+func NewImportBlockContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ImportBlockContext {
+	var p = new(ImportBlockContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_importBlock
+
+	return p
+}
+
+func (s *ImportBlockContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ImportBlockContext) GetImportToken() antlr.Token { return s.importToken }
+
+func (s *ImportBlockContext) SetImportToken(v antlr.Token) { s.importToken = v }
+
+func (s *ImportBlockContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *ImportBlockContext) AllImportBlockValue() []IImportBlockValueContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IImportBlockValueContext)(nil)).Elem())
+	var tst = make([]IImportBlockValueContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IImportBlockValueContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *ImportBlockContext) ImportBlockValue(i int) IImportBlockValueContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IImportBlockValueContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IImportBlockValueContext)
+}
+
+func (s *ImportBlockContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ImportBlockContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ImportBlockContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitImportBlock(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ImportBlock() (localctx IImportBlockContext) {
+	localctx = NewImportBlockContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 10, ApiParserParserRULE_importBlock)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "import")
+	{
+		p.SetState(102)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*ImportBlockContext).importToken = _m
+	}
+	{
+		p.SetState(103)
+		p.Match(ApiParserParserT__1)
+	}
+	p.SetState(105)
+	p.GetErrorHandler().Sync(p)
+
+	for ok := true; ok; ok = _la == ApiParserParserSTRING {
+		{
+			p.SetState(104)
+			p.ImportBlockValue()
+		}
+
+		p.SetState(107)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+	}
+	{
+		p.SetState(109)
+		p.Match(ApiParserParserT__2)
+	}
+
+	return localctx
+}
+
+// IImportBlockValueContext is an interface to support dynamic dispatch.
+type IImportBlockValueContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsImportBlockValueContext differentiates from other interfaces.
+	IsImportBlockValueContext()
+}
+
+type ImportBlockValueContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyImportBlockValueContext() *ImportBlockValueContext {
+	var p = new(ImportBlockValueContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_importBlockValue
+	return p
+}
+
+func (*ImportBlockValueContext) IsImportBlockValueContext() {}
+
+func NewImportBlockValueContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ImportBlockValueContext {
+	var p = new(ImportBlockValueContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_importBlockValue
+
+	return p
+}
+
+func (s *ImportBlockValueContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ImportBlockValueContext) ImportValue() IImportValueContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IImportValueContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IImportValueContext)
+}
+
+func (s *ImportBlockValueContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ImportBlockValueContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ImportBlockValueContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitImportBlockValue(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ImportBlockValue() (localctx IImportBlockValueContext) {
+	localctx = NewImportBlockValueContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 12, ApiParserParserRULE_importBlockValue)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(111)
+		p.ImportValue()
+	}
+
+	return localctx
+}
+
+// IImportValueContext is an interface to support dynamic dispatch.
+type IImportValueContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsImportValueContext differentiates from other interfaces.
+	IsImportValueContext()
+}
+
+type ImportValueContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyImportValueContext() *ImportValueContext {
+	var p = new(ImportValueContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_importValue
+	return p
+}
+
+func (*ImportValueContext) IsImportValueContext() {}
+
+func NewImportValueContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ImportValueContext {
+	var p = new(ImportValueContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_importValue
+
+	return p
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser2.go

@@ -0,0 +1,656 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 2
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+func (s *ImportValueContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ImportValueContext) STRING() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserSTRING, 0)
+}
+
+func (s *ImportValueContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ImportValueContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ImportValueContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitImportValue(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ImportValue() (localctx IImportValueContext) {
+	localctx = NewImportValueContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 14, ApiParserParserRULE_importValue)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	checkImportValue(p)
+	{
+		p.SetState(114)
+		p.Match(ApiParserParserSTRING)
+	}
+
+	return localctx
+}
+
+// IInfoSpecContext is an interface to support dynamic dispatch.
+type IInfoSpecContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetInfoToken returns the infoToken token.
+	GetInfoToken() antlr.Token
+
+	// GetLp returns the lp token.
+	GetLp() antlr.Token
+
+	// GetRp returns the rp token.
+	GetRp() antlr.Token
+
+	// SetInfoToken sets the infoToken token.
+	SetInfoToken(antlr.Token)
+
+	// SetLp sets the lp token.
+	SetLp(antlr.Token)
+
+	// SetRp sets the rp token.
+	SetRp(antlr.Token)
+
+	// IsInfoSpecContext differentiates from other interfaces.
+	IsInfoSpecContext()
+}
+
+type InfoSpecContext struct {
+	*antlr.BaseParserRuleContext
+	parser    antlr.Parser
+	infoToken antlr.Token
+	lp        antlr.Token
+	rp        antlr.Token
+}
+
+func NewEmptyInfoSpecContext() *InfoSpecContext {
+	var p = new(InfoSpecContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_infoSpec
+	return p
+}
+
+func (*InfoSpecContext) IsInfoSpecContext() {}
+
+func NewInfoSpecContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *InfoSpecContext {
+	var p = new(InfoSpecContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_infoSpec
+
+	return p
+}
+
+func (s *InfoSpecContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *InfoSpecContext) GetInfoToken() antlr.Token { return s.infoToken }
+
+func (s *InfoSpecContext) GetLp() antlr.Token { return s.lp }
+
+func (s *InfoSpecContext) GetRp() antlr.Token { return s.rp }
+
+func (s *InfoSpecContext) SetInfoToken(v antlr.Token) { s.infoToken = v }
+
+func (s *InfoSpecContext) SetLp(v antlr.Token) { s.lp = v }
+
+func (s *InfoSpecContext) SetRp(v antlr.Token) { s.rp = v }
+
+func (s *InfoSpecContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *InfoSpecContext) AllKvLit() []IKvLitContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IKvLitContext)(nil)).Elem())
+	var tst = make([]IKvLitContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IKvLitContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *InfoSpecContext) KvLit(i int) IKvLitContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IKvLitContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IKvLitContext)
+}
+
+func (s *InfoSpecContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *InfoSpecContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *InfoSpecContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitInfoSpec(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) InfoSpec() (localctx IInfoSpecContext) {
+	localctx = NewInfoSpecContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 16, ApiParserParserRULE_infoSpec)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "info")
+	{
+		p.SetState(117)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*InfoSpecContext).infoToken = _m
+	}
+	{
+		p.SetState(118)
+
+		var _m = p.Match(ApiParserParserT__1)
+
+		localctx.(*InfoSpecContext).lp = _m
+	}
+	p.SetState(120)
+	p.GetErrorHandler().Sync(p)
+
+	for ok := true; ok; ok = _la == ApiParserParserID {
+		{
+			p.SetState(119)
+			p.KvLit()
+		}
+
+		p.SetState(122)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+	}
+	{
+		p.SetState(124)
+
+		var _m = p.Match(ApiParserParserT__2)
+
+		localctx.(*InfoSpecContext).rp = _m
+	}
+
+	return localctx
+}
+
+// ITypeSpecContext is an interface to support dynamic dispatch.
+type ITypeSpecContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsTypeSpecContext differentiates from other interfaces.
+	IsTypeSpecContext()
+}
+
+type TypeSpecContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyTypeSpecContext() *TypeSpecContext {
+	var p = new(TypeSpecContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeSpec
+	return p
+}
+
+func (*TypeSpecContext) IsTypeSpecContext() {}
+
+func NewTypeSpecContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeSpecContext {
+	var p = new(TypeSpecContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeSpec
+
+	return p
+}
+
+func (s *TypeSpecContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeSpecContext) TypeLit() ITypeLitContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeLitContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeLitContext)
+}
+
+func (s *TypeSpecContext) TypeBlock() ITypeBlockContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeBlockContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeBlockContext)
+}
+
+func (s *TypeSpecContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeSpecContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeSpecContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeSpec(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeSpec() (localctx ITypeSpecContext) {
+	localctx = NewTypeSpecContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 18, ApiParserParserRULE_typeSpec)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(128)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 5, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		{
+			p.SetState(126)
+			p.TypeLit()
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(127)
+			p.TypeBlock()
+		}
+
+	}
+
+	return localctx
+}
+
+// ITypeLitContext is an interface to support dynamic dispatch.
+type ITypeLitContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetTypeToken returns the typeToken token.
+	GetTypeToken() antlr.Token
+
+	// SetTypeToken sets the typeToken token.
+	SetTypeToken(antlr.Token)
+
+	// IsTypeLitContext differentiates from other interfaces.
+	IsTypeLitContext()
+}
+
+type TypeLitContext struct {
+	*antlr.BaseParserRuleContext
+	parser    antlr.Parser
+	typeToken antlr.Token
+}
+
+func NewEmptyTypeLitContext() *TypeLitContext {
+	var p = new(TypeLitContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeLit
+	return p
+}
+
+func (*TypeLitContext) IsTypeLitContext() {}
+
+func NewTypeLitContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeLitContext {
+	var p = new(TypeLitContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeLit
+
+	return p
+}
+
+func (s *TypeLitContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeLitContext) GetTypeToken() antlr.Token { return s.typeToken }
+
+func (s *TypeLitContext) SetTypeToken(v antlr.Token) { s.typeToken = v }
+
+func (s *TypeLitContext) TypeLitBody() ITypeLitBodyContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeLitBodyContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeLitBodyContext)
+}
+
+func (s *TypeLitContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *TypeLitContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeLitContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeLitContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeLit(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeLit() (localctx ITypeLitContext) {
+	localctx = NewTypeLitContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 20, ApiParserParserRULE_typeLit)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "type")
+	{
+		p.SetState(131)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*TypeLitContext).typeToken = _m
+	}
+	{
+		p.SetState(132)
+		p.TypeLitBody()
+	}
+
+	return localctx
+}
+
+// ITypeBlockContext is an interface to support dynamic dispatch.
+type ITypeBlockContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetTypeToken returns the typeToken token.
+	GetTypeToken() antlr.Token
+
+	// GetLp returns the lp token.
+	GetLp() antlr.Token
+
+	// GetRp returns the rp token.
+	GetRp() antlr.Token
+
+	// SetTypeToken sets the typeToken token.
+	SetTypeToken(antlr.Token)
+
+	// SetLp sets the lp token.
+	SetLp(antlr.Token)
+
+	// SetRp sets the rp token.
+	SetRp(antlr.Token)
+
+	// IsTypeBlockContext differentiates from other interfaces.
+	IsTypeBlockContext()
+}
+
+type TypeBlockContext struct {
+	*antlr.BaseParserRuleContext
+	parser    antlr.Parser
+	typeToken antlr.Token
+	lp        antlr.Token
+	rp        antlr.Token
+}
+
+func NewEmptyTypeBlockContext() *TypeBlockContext {
+	var p = new(TypeBlockContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeBlock
+	return p
+}
+
+func (*TypeBlockContext) IsTypeBlockContext() {}
+
+func NewTypeBlockContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeBlockContext {
+	var p = new(TypeBlockContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeBlock
+
+	return p
+}
+
+func (s *TypeBlockContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeBlockContext) GetTypeToken() antlr.Token { return s.typeToken }
+
+func (s *TypeBlockContext) GetLp() antlr.Token { return s.lp }
+
+func (s *TypeBlockContext) GetRp() antlr.Token { return s.rp }
+
+func (s *TypeBlockContext) SetTypeToken(v antlr.Token) { s.typeToken = v }
+
+func (s *TypeBlockContext) SetLp(v antlr.Token) { s.lp = v }
+
+func (s *TypeBlockContext) SetRp(v antlr.Token) { s.rp = v }
+
+func (s *TypeBlockContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *TypeBlockContext) AllTypeBlockBody() []ITypeBlockBodyContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*ITypeBlockBodyContext)(nil)).Elem())
+	var tst = make([]ITypeBlockBodyContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(ITypeBlockBodyContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *TypeBlockContext) TypeBlockBody(i int) ITypeBlockBodyContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeBlockBodyContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeBlockBodyContext)
+}
+
+func (s *TypeBlockContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeBlockContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeBlockContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeBlock(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeBlock() (localctx ITypeBlockContext) {
+	localctx = NewTypeBlockContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 22, ApiParserParserRULE_typeBlock)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "type")
+	{
+		p.SetState(135)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*TypeBlockContext).typeToken = _m
+	}
+	{
+		p.SetState(136)
+
+		var _m = p.Match(ApiParserParserT__1)
+
+		localctx.(*TypeBlockContext).lp = _m
+	}
+	p.SetState(140)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	for _la == ApiParserParserID {
+		{
+			p.SetState(137)
+			p.TypeBlockBody()
+		}
+
+		p.SetState(142)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+	}
+	{
+		p.SetState(143)
+
+		var _m = p.Match(ApiParserParserT__2)
+
+		localctx.(*TypeBlockContext).rp = _m
+	}
+
+	return localctx
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser3.go

@@ -0,0 +1,637 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 3
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+// ITypeLitBodyContext is an interface to support dynamic dispatch.
+type ITypeLitBodyContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsTypeLitBodyContext differentiates from other interfaces.
+	IsTypeLitBodyContext()
+}
+
+type TypeLitBodyContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyTypeLitBodyContext() *TypeLitBodyContext {
+	var p = new(TypeLitBodyContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeLitBody
+	return p
+}
+
+func (*TypeLitBodyContext) IsTypeLitBodyContext() {}
+
+func NewTypeLitBodyContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeLitBodyContext {
+	var p = new(TypeLitBodyContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeLitBody
+
+	return p
+}
+
+func (s *TypeLitBodyContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeLitBodyContext) TypeStruct() ITypeStructContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeStructContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeStructContext)
+}
+
+func (s *TypeLitBodyContext) TypeAlias() ITypeAliasContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeAliasContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeAliasContext)
+}
+
+func (s *TypeLitBodyContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeLitBodyContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeLitBodyContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeLitBody(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeLitBody() (localctx ITypeLitBodyContext) {
+	localctx = NewTypeLitBodyContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 24, ApiParserParserRULE_typeLitBody)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(147)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 7, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		{
+			p.SetState(145)
+			p.TypeStruct()
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(146)
+			p.TypeAlias()
+		}
+
+	}
+
+	return localctx
+}
+
+// ITypeBlockBodyContext is an interface to support dynamic dispatch.
+type ITypeBlockBodyContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsTypeBlockBodyContext differentiates from other interfaces.
+	IsTypeBlockBodyContext()
+}
+
+type TypeBlockBodyContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyTypeBlockBodyContext() *TypeBlockBodyContext {
+	var p = new(TypeBlockBodyContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeBlockBody
+	return p
+}
+
+func (*TypeBlockBodyContext) IsTypeBlockBodyContext() {}
+
+func NewTypeBlockBodyContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeBlockBodyContext {
+	var p = new(TypeBlockBodyContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeBlockBody
+
+	return p
+}
+
+func (s *TypeBlockBodyContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeBlockBodyContext) TypeBlockStruct() ITypeBlockStructContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeBlockStructContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeBlockStructContext)
+}
+
+func (s *TypeBlockBodyContext) TypeBlockAlias() ITypeBlockAliasContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeBlockAliasContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeBlockAliasContext)
+}
+
+func (s *TypeBlockBodyContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeBlockBodyContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeBlockBodyContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeBlockBody(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeBlockBody() (localctx ITypeBlockBodyContext) {
+	localctx = NewTypeBlockBodyContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 26, ApiParserParserRULE_typeBlockBody)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(151)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 8, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		{
+			p.SetState(149)
+			p.TypeBlockStruct()
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(150)
+			p.TypeBlockAlias()
+		}
+
+	}
+
+	return localctx
+}
+
+// ITypeStructContext is an interface to support dynamic dispatch.
+type ITypeStructContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetStructName returns the structName token.
+	GetStructName() antlr.Token
+
+	// GetStructToken returns the structToken token.
+	GetStructToken() antlr.Token
+
+	// GetLbrace returns the lbrace token.
+	GetLbrace() antlr.Token
+
+	// GetRbrace returns the rbrace token.
+	GetRbrace() antlr.Token
+
+	// SetStructName sets the structName token.
+	SetStructName(antlr.Token)
+
+	// SetStructToken sets the structToken token.
+	SetStructToken(antlr.Token)
+
+	// SetLbrace sets the lbrace token.
+	SetLbrace(antlr.Token)
+
+	// SetRbrace sets the rbrace token.
+	SetRbrace(antlr.Token)
+
+	// IsTypeStructContext differentiates from other interfaces.
+	IsTypeStructContext()
+}
+
+type TypeStructContext struct {
+	*antlr.BaseParserRuleContext
+	parser      antlr.Parser
+	structName  antlr.Token
+	structToken antlr.Token
+	lbrace      antlr.Token
+	rbrace      antlr.Token
+}
+
+func NewEmptyTypeStructContext() *TypeStructContext {
+	var p = new(TypeStructContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeStruct
+	return p
+}
+
+func (*TypeStructContext) IsTypeStructContext() {}
+
+func NewTypeStructContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeStructContext {
+	var p = new(TypeStructContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeStruct
+
+	return p
+}
+
+func (s *TypeStructContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeStructContext) GetStructName() antlr.Token { return s.structName }
+
+func (s *TypeStructContext) GetStructToken() antlr.Token { return s.structToken }
+
+func (s *TypeStructContext) GetLbrace() antlr.Token { return s.lbrace }
+
+func (s *TypeStructContext) GetRbrace() antlr.Token { return s.rbrace }
+
+func (s *TypeStructContext) SetStructName(v antlr.Token) { s.structName = v }
+
+func (s *TypeStructContext) SetStructToken(v antlr.Token) { s.structToken = v }
+
+func (s *TypeStructContext) SetLbrace(v antlr.Token) { s.lbrace = v }
+
+func (s *TypeStructContext) SetRbrace(v antlr.Token) { s.rbrace = v }
+
+func (s *TypeStructContext) AllID() []antlr.TerminalNode {
+	return s.GetTokens(ApiParserParserID)
+}
+
+func (s *TypeStructContext) ID(i int) antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, i)
+}
+
+func (s *TypeStructContext) AllField() []IFieldContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IFieldContext)(nil)).Elem())
+	var tst = make([]IFieldContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IFieldContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *TypeStructContext) Field(i int) IFieldContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IFieldContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IFieldContext)
+}
+
+func (s *TypeStructContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeStructContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeStructContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeStruct(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeStruct() (localctx ITypeStructContext) {
+	localctx = NewTypeStructContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 28, ApiParserParserRULE_typeStruct)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	var _alt int
+
+	p.EnterOuterAlt(localctx, 1)
+	checkKeyword(p)
+	{
+		p.SetState(154)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*TypeStructContext).structName = _m
+	}
+	p.SetState(156)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserID {
+		{
+			p.SetState(155)
+
+			var _m = p.Match(ApiParserParserID)
+
+			localctx.(*TypeStructContext).structToken = _m
+		}
+
+	}
+	{
+		p.SetState(158)
+
+		var _m = p.Match(ApiParserParserT__3)
+
+		localctx.(*TypeStructContext).lbrace = _m
+	}
+	p.SetState(162)
+	p.GetErrorHandler().Sync(p)
+	_alt = p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 10, p.GetParserRuleContext())
+
+	for _alt != 2 && _alt != antlr.ATNInvalidAltNumber {
+		if _alt == 1 {
+			{
+				p.SetState(159)
+				p.Field()
+			}
+
+		}
+		p.SetState(164)
+		p.GetErrorHandler().Sync(p)
+		_alt = p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 10, p.GetParserRuleContext())
+	}
+	{
+		p.SetState(165)
+
+		var _m = p.Match(ApiParserParserT__4)
+
+		localctx.(*TypeStructContext).rbrace = _m
+	}
+
+	return localctx
+}
+
+// ITypeAliasContext is an interface to support dynamic dispatch.
+type ITypeAliasContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetAlias returns the alias token.
+	GetAlias() antlr.Token
+
+	// GetAssign returns the assign token.
+	GetAssign() antlr.Token
+
+	// SetAlias sets the alias token.
+	SetAlias(antlr.Token)
+
+	// SetAssign sets the assign token.
+	SetAssign(antlr.Token)
+
+	// IsTypeAliasContext differentiates from other interfaces.
+	IsTypeAliasContext()
+}
+
+type TypeAliasContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	alias  antlr.Token
+	assign antlr.Token
+}
+
+func NewEmptyTypeAliasContext() *TypeAliasContext {
+	var p = new(TypeAliasContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeAlias
+	return p
+}
+
+func (*TypeAliasContext) IsTypeAliasContext() {}
+
+func NewTypeAliasContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeAliasContext {
+	var p = new(TypeAliasContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeAlias
+
+	return p
+}
+
+func (s *TypeAliasContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeAliasContext) GetAlias() antlr.Token { return s.alias }
+
+func (s *TypeAliasContext) GetAssign() antlr.Token { return s.assign }
+
+func (s *TypeAliasContext) SetAlias(v antlr.Token) { s.alias = v }
+
+func (s *TypeAliasContext) SetAssign(v antlr.Token) { s.assign = v }
+
+func (s *TypeAliasContext) DataType() IDataTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IDataTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IDataTypeContext)
+}
+
+func (s *TypeAliasContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *TypeAliasContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeAliasContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeAliasContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeAlias(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeAlias() (localctx ITypeAliasContext) {
+	localctx = NewTypeAliasContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 30, ApiParserParserRULE_typeAlias)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	checkKeyword(p)
+	{
+		p.SetState(168)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*TypeAliasContext).alias = _m
+	}
+	p.SetState(170)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserT__0 {
+		{
+			p.SetState(169)
+
+			var _m = p.Match(ApiParserParserT__0)
+
+			localctx.(*TypeAliasContext).assign = _m
+		}
+
+	}
+	{
+		p.SetState(172)
+		p.DataType()
+	}
+
+	return localctx
+}
+
+// ITypeBlockStructContext is an interface to support dynamic dispatch.
+type ITypeBlockStructContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetStructName returns the structName token.
+	GetStructName() antlr.Token
+
+	// GetStructToken returns the structToken token.
+	GetStructToken() antlr.Token
+
+	// GetLbrace returns the lbrace token.
+	GetLbrace() antlr.Token
+
+	// GetRbrace returns the rbrace token.
+	GetRbrace() antlr.Token
+
+	// SetStructName sets the structName token.
+	SetStructName(antlr.Token)
+
+	// SetStructToken sets the structToken token.
+	SetStructToken(antlr.Token)
+
+	// SetLbrace sets the lbrace token.
+	SetLbrace(antlr.Token)
+
+	// SetRbrace sets the rbrace token.
+	SetRbrace(antlr.Token)
+
+	// IsTypeBlockStructContext differentiates from other interfaces.
+	IsTypeBlockStructContext()
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser4.go

@@ -0,0 +1,617 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 4
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+type TypeBlockStructContext struct {
+	*antlr.BaseParserRuleContext
+	parser      antlr.Parser
+	structName  antlr.Token
+	structToken antlr.Token
+	lbrace      antlr.Token
+	rbrace      antlr.Token
+}
+
+func NewEmptyTypeBlockStructContext() *TypeBlockStructContext {
+	var p = new(TypeBlockStructContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeBlockStruct
+	return p
+}
+
+func (*TypeBlockStructContext) IsTypeBlockStructContext() {}
+
+func NewTypeBlockStructContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeBlockStructContext {
+	var p = new(TypeBlockStructContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeBlockStruct
+
+	return p
+}
+
+func (s *TypeBlockStructContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeBlockStructContext) GetStructName() antlr.Token { return s.structName }
+
+func (s *TypeBlockStructContext) GetStructToken() antlr.Token { return s.structToken }
+
+func (s *TypeBlockStructContext) GetLbrace() antlr.Token { return s.lbrace }
+
+func (s *TypeBlockStructContext) GetRbrace() antlr.Token { return s.rbrace }
+
+func (s *TypeBlockStructContext) SetStructName(v antlr.Token) { s.structName = v }
+
+func (s *TypeBlockStructContext) SetStructToken(v antlr.Token) { s.structToken = v }
+
+func (s *TypeBlockStructContext) SetLbrace(v antlr.Token) { s.lbrace = v }
+
+func (s *TypeBlockStructContext) SetRbrace(v antlr.Token) { s.rbrace = v }
+
+func (s *TypeBlockStructContext) AllID() []antlr.TerminalNode {
+	return s.GetTokens(ApiParserParserID)
+}
+
+func (s *TypeBlockStructContext) ID(i int) antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, i)
+}
+
+func (s *TypeBlockStructContext) AllField() []IFieldContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IFieldContext)(nil)).Elem())
+	var tst = make([]IFieldContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IFieldContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *TypeBlockStructContext) Field(i int) IFieldContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IFieldContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IFieldContext)
+}
+
+func (s *TypeBlockStructContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeBlockStructContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeBlockStructContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeBlockStruct(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeBlockStruct() (localctx ITypeBlockStructContext) {
+	localctx = NewTypeBlockStructContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 32, ApiParserParserRULE_typeBlockStruct)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	var _alt int
+
+	p.EnterOuterAlt(localctx, 1)
+	checkKeyword(p)
+	{
+		p.SetState(175)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*TypeBlockStructContext).structName = _m
+	}
+	p.SetState(177)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserID {
+		{
+			p.SetState(176)
+
+			var _m = p.Match(ApiParserParserID)
+
+			localctx.(*TypeBlockStructContext).structToken = _m
+		}
+
+	}
+	{
+		p.SetState(179)
+
+		var _m = p.Match(ApiParserParserT__3)
+
+		localctx.(*TypeBlockStructContext).lbrace = _m
+	}
+	p.SetState(183)
+	p.GetErrorHandler().Sync(p)
+	_alt = p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 13, p.GetParserRuleContext())
+
+	for _alt != 2 && _alt != antlr.ATNInvalidAltNumber {
+		if _alt == 1 {
+			{
+				p.SetState(180)
+				p.Field()
+			}
+
+		}
+		p.SetState(185)
+		p.GetErrorHandler().Sync(p)
+		_alt = p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 13, p.GetParserRuleContext())
+	}
+	{
+		p.SetState(186)
+
+		var _m = p.Match(ApiParserParserT__4)
+
+		localctx.(*TypeBlockStructContext).rbrace = _m
+	}
+
+	return localctx
+}
+
+// ITypeBlockAliasContext is an interface to support dynamic dispatch.
+type ITypeBlockAliasContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetAlias returns the alias token.
+	GetAlias() antlr.Token
+
+	// GetAssign returns the assign token.
+	GetAssign() antlr.Token
+
+	// SetAlias sets the alias token.
+	SetAlias(antlr.Token)
+
+	// SetAssign sets the assign token.
+	SetAssign(antlr.Token)
+
+	// IsTypeBlockAliasContext differentiates from other interfaces.
+	IsTypeBlockAliasContext()
+}
+
+type TypeBlockAliasContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	alias  antlr.Token
+	assign antlr.Token
+}
+
+func NewEmptyTypeBlockAliasContext() *TypeBlockAliasContext {
+	var p = new(TypeBlockAliasContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_typeBlockAlias
+	return p
+}
+
+func (*TypeBlockAliasContext) IsTypeBlockAliasContext() {}
+
+func NewTypeBlockAliasContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *TypeBlockAliasContext {
+	var p = new(TypeBlockAliasContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_typeBlockAlias
+
+	return p
+}
+
+func (s *TypeBlockAliasContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *TypeBlockAliasContext) GetAlias() antlr.Token { return s.alias }
+
+func (s *TypeBlockAliasContext) GetAssign() antlr.Token { return s.assign }
+
+func (s *TypeBlockAliasContext) SetAlias(v antlr.Token) { s.alias = v }
+
+func (s *TypeBlockAliasContext) SetAssign(v antlr.Token) { s.assign = v }
+
+func (s *TypeBlockAliasContext) DataType() IDataTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IDataTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IDataTypeContext)
+}
+
+func (s *TypeBlockAliasContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *TypeBlockAliasContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *TypeBlockAliasContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *TypeBlockAliasContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitTypeBlockAlias(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) TypeBlockAlias() (localctx ITypeBlockAliasContext) {
+	localctx = NewTypeBlockAliasContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 34, ApiParserParserRULE_typeBlockAlias)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	checkKeyword(p)
+	{
+		p.SetState(189)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*TypeBlockAliasContext).alias = _m
+	}
+	p.SetState(191)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserT__0 {
+		{
+			p.SetState(190)
+
+			var _m = p.Match(ApiParserParserT__0)
+
+			localctx.(*TypeBlockAliasContext).assign = _m
+		}
+
+	}
+	{
+		p.SetState(193)
+		p.DataType()
+	}
+
+	return localctx
+}
+
+// IFieldContext is an interface to support dynamic dispatch.
+type IFieldContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsFieldContext differentiates from other interfaces.
+	IsFieldContext()
+}
+
+type FieldContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyFieldContext() *FieldContext {
+	var p = new(FieldContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_field
+	return p
+}
+
+func (*FieldContext) IsFieldContext() {}
+
+func NewFieldContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *FieldContext {
+	var p = new(FieldContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_field
+
+	return p
+}
+
+func (s *FieldContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *FieldContext) NormalField() INormalFieldContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*INormalFieldContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(INormalFieldContext)
+}
+
+func (s *FieldContext) AnonymousFiled() IAnonymousFiledContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IAnonymousFiledContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IAnonymousFiledContext)
+}
+
+func (s *FieldContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *FieldContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *FieldContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitField(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) Field() (localctx IFieldContext) {
+	localctx = NewFieldContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 36, ApiParserParserRULE_field)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(198)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 15, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		p.SetState(195)
+
+		if !(isNormal(p)) {
+			panic(antlr.NewFailedPredicateException(p, "isNormal(p)", ""))
+		}
+		{
+			p.SetState(196)
+			p.NormalField()
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(197)
+			p.AnonymousFiled()
+		}
+
+	}
+
+	return localctx
+}
+
+// INormalFieldContext is an interface to support dynamic dispatch.
+type INormalFieldContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetFieldName returns the fieldName token.
+	GetFieldName() antlr.Token
+
+	// GetTag returns the tag token.
+	GetTag() antlr.Token
+
+	// SetFieldName sets the fieldName token.
+	SetFieldName(antlr.Token)
+
+	// SetTag sets the tag token.
+	SetTag(antlr.Token)
+
+	// IsNormalFieldContext differentiates from other interfaces.
+	IsNormalFieldContext()
+}
+
+type NormalFieldContext struct {
+	*antlr.BaseParserRuleContext
+	parser    antlr.Parser
+	fieldName antlr.Token
+	tag       antlr.Token
+}
+
+func NewEmptyNormalFieldContext() *NormalFieldContext {
+	var p = new(NormalFieldContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_normalField
+	return p
+}
+
+func (*NormalFieldContext) IsNormalFieldContext() {}
+
+func NewNormalFieldContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *NormalFieldContext {
+	var p = new(NormalFieldContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_normalField
+
+	return p
+}
+
+func (s *NormalFieldContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *NormalFieldContext) GetFieldName() antlr.Token { return s.fieldName }
+
+func (s *NormalFieldContext) GetTag() antlr.Token { return s.tag }
+
+func (s *NormalFieldContext) SetFieldName(v antlr.Token) { s.fieldName = v }
+
+func (s *NormalFieldContext) SetTag(v antlr.Token) { s.tag = v }
+
+func (s *NormalFieldContext) DataType() IDataTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IDataTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IDataTypeContext)
+}
+
+func (s *NormalFieldContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *NormalFieldContext) RAW_STRING() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserRAW_STRING, 0)
+}
+
+func (s *NormalFieldContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *NormalFieldContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *NormalFieldContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitNormalField(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) NormalField() (localctx INormalFieldContext) {
+	localctx = NewNormalFieldContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 38, ApiParserParserRULE_normalField)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	checkKeyword(p)
+	{
+		p.SetState(201)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*NormalFieldContext).fieldName = _m
+	}
+	{
+		p.SetState(202)
+		p.DataType()
+	}
+	p.SetState(204)
+	p.GetErrorHandler().Sync(p)
+
+	if p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 16, p.GetParserRuleContext()) == 1 {
+		{
+			p.SetState(203)
+
+			var _m = p.Match(ApiParserParserRAW_STRING)
+
+			localctx.(*NormalFieldContext).tag = _m
+		}
+
+	}
+
+	return localctx
+}
+
+// IAnonymousFiledContext is an interface to support dynamic dispatch.
+type IAnonymousFiledContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetStar returns the star token.
+	GetStar() antlr.Token
+
+	// SetStar sets the star token.
+	SetStar(antlr.Token)
+
+	// IsAnonymousFiledContext differentiates from other interfaces.
+	IsAnonymousFiledContext()
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser5.go

@@ -0,0 +1,618 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 5
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+type AnonymousFiledContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	star   antlr.Token
+}
+
+func NewEmptyAnonymousFiledContext() *AnonymousFiledContext {
+	var p = new(AnonymousFiledContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_anonymousFiled
+	return p
+}
+
+func (*AnonymousFiledContext) IsAnonymousFiledContext() {}
+
+func NewAnonymousFiledContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *AnonymousFiledContext {
+	var p = new(AnonymousFiledContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_anonymousFiled
+
+	return p
+}
+
+func (s *AnonymousFiledContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *AnonymousFiledContext) GetStar() antlr.Token { return s.star }
+
+func (s *AnonymousFiledContext) SetStar(v antlr.Token) { s.star = v }
+
+func (s *AnonymousFiledContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *AnonymousFiledContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *AnonymousFiledContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *AnonymousFiledContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitAnonymousFiled(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) AnonymousFiled() (localctx IAnonymousFiledContext) {
+	localctx = NewAnonymousFiledContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 40, ApiParserParserRULE_anonymousFiled)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	p.SetState(207)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserT__5 {
+		{
+			p.SetState(206)
+
+			var _m = p.Match(ApiParserParserT__5)
+
+			localctx.(*AnonymousFiledContext).star = _m
+		}
+
+	}
+	{
+		p.SetState(209)
+		p.Match(ApiParserParserID)
+	}
+
+	return localctx
+}
+
+// IDataTypeContext is an interface to support dynamic dispatch.
+type IDataTypeContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetInter returns the inter token.
+	GetInter() antlr.Token
+
+	// GetTime returns the time token.
+	GetTime() antlr.Token
+
+	// SetInter sets the inter token.
+	SetInter(antlr.Token)
+
+	// SetTime sets the time token.
+	SetTime(antlr.Token)
+
+	// IsDataTypeContext differentiates from other interfaces.
+	IsDataTypeContext()
+}
+
+type DataTypeContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	inter  antlr.Token
+	time   antlr.Token
+}
+
+func NewEmptyDataTypeContext() *DataTypeContext {
+	var p = new(DataTypeContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_dataType
+	return p
+}
+
+func (*DataTypeContext) IsDataTypeContext() {}
+
+func NewDataTypeContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *DataTypeContext {
+	var p = new(DataTypeContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_dataType
+
+	return p
+}
+
+func (s *DataTypeContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *DataTypeContext) GetInter() antlr.Token { return s.inter }
+
+func (s *DataTypeContext) GetTime() antlr.Token { return s.time }
+
+func (s *DataTypeContext) SetInter(v antlr.Token) { s.inter = v }
+
+func (s *DataTypeContext) SetTime(v antlr.Token) { s.time = v }
+
+func (s *DataTypeContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *DataTypeContext) MapType() IMapTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IMapTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IMapTypeContext)
+}
+
+func (s *DataTypeContext) ArrayType() IArrayTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IArrayTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IArrayTypeContext)
+}
+
+func (s *DataTypeContext) INTERFACE() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserINTERFACE, 0)
+}
+
+func (s *DataTypeContext) PointerType() IPointerTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IPointerTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IPointerTypeContext)
+}
+
+func (s *DataTypeContext) TypeStruct() ITypeStructContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*ITypeStructContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ITypeStructContext)
+}
+
+func (s *DataTypeContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *DataTypeContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *DataTypeContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitDataType(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) DataType() (localctx IDataTypeContext) {
+	localctx = NewDataTypeContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 42, ApiParserParserRULE_dataType)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(219)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 18, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		isInterface(p)
+		{
+			p.SetState(212)
+			p.Match(ApiParserParserID)
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(213)
+			p.MapType()
+		}
+
+	case 3:
+		p.EnterOuterAlt(localctx, 3)
+		{
+			p.SetState(214)
+			p.ArrayType()
+		}
+
+	case 4:
+		p.EnterOuterAlt(localctx, 4)
+		{
+			p.SetState(215)
+
+			var _m = p.Match(ApiParserParserINTERFACE)
+
+			localctx.(*DataTypeContext).inter = _m
+		}
+
+	case 5:
+		p.EnterOuterAlt(localctx, 5)
+		{
+			p.SetState(216)
+
+			var _m = p.Match(ApiParserParserT__6)
+
+			localctx.(*DataTypeContext).time = _m
+		}
+
+	case 6:
+		p.EnterOuterAlt(localctx, 6)
+		{
+			p.SetState(217)
+			p.PointerType()
+		}
+
+	case 7:
+		p.EnterOuterAlt(localctx, 7)
+		{
+			p.SetState(218)
+			p.TypeStruct()
+		}
+
+	}
+
+	return localctx
+}
+
+// IPointerTypeContext is an interface to support dynamic dispatch.
+type IPointerTypeContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetStar returns the star token.
+	GetStar() antlr.Token
+
+	// SetStar sets the star token.
+	SetStar(antlr.Token)
+
+	// IsPointerTypeContext differentiates from other interfaces.
+	IsPointerTypeContext()
+}
+
+type PointerTypeContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	star   antlr.Token
+}
+
+func NewEmptyPointerTypeContext() *PointerTypeContext {
+	var p = new(PointerTypeContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_pointerType
+	return p
+}
+
+func (*PointerTypeContext) IsPointerTypeContext() {}
+
+func NewPointerTypeContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *PointerTypeContext {
+	var p = new(PointerTypeContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_pointerType
+
+	return p
+}
+
+func (s *PointerTypeContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *PointerTypeContext) GetStar() antlr.Token { return s.star }
+
+func (s *PointerTypeContext) SetStar(v antlr.Token) { s.star = v }
+
+func (s *PointerTypeContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *PointerTypeContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *PointerTypeContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *PointerTypeContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitPointerType(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) PointerType() (localctx IPointerTypeContext) {
+	localctx = NewPointerTypeContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 44, ApiParserParserRULE_pointerType)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(221)
+
+		var _m = p.Match(ApiParserParserT__5)
+
+		localctx.(*PointerTypeContext).star = _m
+	}
+	checkKeyword(p)
+	{
+		p.SetState(223)
+		p.Match(ApiParserParserID)
+	}
+
+	return localctx
+}
+
+// IMapTypeContext is an interface to support dynamic dispatch.
+type IMapTypeContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetMapToken returns the mapToken token.
+	GetMapToken() antlr.Token
+
+	// GetLbrack returns the lbrack token.
+	GetLbrack() antlr.Token
+
+	// GetKey returns the key token.
+	GetKey() antlr.Token
+
+	// GetRbrack returns the rbrack token.
+	GetRbrack() antlr.Token
+
+	// SetMapToken sets the mapToken token.
+	SetMapToken(antlr.Token)
+
+	// SetLbrack sets the lbrack token.
+	SetLbrack(antlr.Token)
+
+	// SetKey sets the key token.
+	SetKey(antlr.Token)
+
+	// SetRbrack sets the rbrack token.
+	SetRbrack(antlr.Token)
+
+	// GetValue returns the value rule contexts.
+	GetValue() IDataTypeContext
+
+	// SetValue sets the value rule contexts.
+	SetValue(IDataTypeContext)
+
+	// IsMapTypeContext differentiates from other interfaces.
+	IsMapTypeContext()
+}
+
+type MapTypeContext struct {
+	*antlr.BaseParserRuleContext
+	parser   antlr.Parser
+	mapToken antlr.Token
+	lbrack   antlr.Token
+	key      antlr.Token
+	rbrack   antlr.Token
+	value    IDataTypeContext
+}
+
+func NewEmptyMapTypeContext() *MapTypeContext {
+	var p = new(MapTypeContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_mapType
+	return p
+}
+
+func (*MapTypeContext) IsMapTypeContext() {}
+
+func NewMapTypeContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *MapTypeContext {
+	var p = new(MapTypeContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_mapType
+
+	return p
+}
+
+func (s *MapTypeContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *MapTypeContext) GetMapToken() antlr.Token { return s.mapToken }
+
+func (s *MapTypeContext) GetLbrack() antlr.Token { return s.lbrack }
+
+func (s *MapTypeContext) GetKey() antlr.Token { return s.key }
+
+func (s *MapTypeContext) GetRbrack() antlr.Token { return s.rbrack }
+
+func (s *MapTypeContext) SetMapToken(v antlr.Token) { s.mapToken = v }
+
+func (s *MapTypeContext) SetLbrack(v antlr.Token) { s.lbrack = v }
+
+func (s *MapTypeContext) SetKey(v antlr.Token) { s.key = v }
+
+func (s *MapTypeContext) SetRbrack(v antlr.Token) { s.rbrack = v }
+
+func (s *MapTypeContext) GetValue() IDataTypeContext { return s.value }
+
+func (s *MapTypeContext) SetValue(v IDataTypeContext) { s.value = v }
+
+func (s *MapTypeContext) AllID() []antlr.TerminalNode {
+	return s.GetTokens(ApiParserParserID)
+}
+
+func (s *MapTypeContext) ID(i int) antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, i)
+}
+
+func (s *MapTypeContext) DataType() IDataTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IDataTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IDataTypeContext)
+}
+
+func (s *MapTypeContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *MapTypeContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *MapTypeContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitMapType(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) MapType() (localctx IMapTypeContext) {
+	localctx = NewMapTypeContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 46, ApiParserParserRULE_mapType)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "map")
+	{
+		p.SetState(226)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*MapTypeContext).mapToken = _m
+	}
+	{
+		p.SetState(227)
+
+		var _m = p.Match(ApiParserParserT__7)
+
+		localctx.(*MapTypeContext).lbrack = _m
+	}
+	checkKey(p)
+	{
+		p.SetState(229)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*MapTypeContext).key = _m
+	}
+	{
+		p.SetState(230)
+
+		var _m = p.Match(ApiParserParserT__8)
+
+		localctx.(*MapTypeContext).rbrack = _m
+	}
+	{
+		p.SetState(231)
+
+		var _x = p.DataType()
+
+		localctx.(*MapTypeContext).value = _x
+	}
+
+	return localctx
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser6.go

@@ -0,0 +1,613 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 6
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+// IArrayTypeContext is an interface to support dynamic dispatch.
+type IArrayTypeContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetLbrack returns the lbrack token.
+	GetLbrack() antlr.Token
+
+	// GetRbrack returns the rbrack token.
+	GetRbrack() antlr.Token
+
+	// SetLbrack sets the lbrack token.
+	SetLbrack(antlr.Token)
+
+	// SetRbrack sets the rbrack token.
+	SetRbrack(antlr.Token)
+
+	// IsArrayTypeContext differentiates from other interfaces.
+	IsArrayTypeContext()
+}
+
+type ArrayTypeContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	lbrack antlr.Token
+	rbrack antlr.Token
+}
+
+func NewEmptyArrayTypeContext() *ArrayTypeContext {
+	var p = new(ArrayTypeContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_arrayType
+	return p
+}
+
+func (*ArrayTypeContext) IsArrayTypeContext() {}
+
+func NewArrayTypeContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ArrayTypeContext {
+	var p = new(ArrayTypeContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_arrayType
+
+	return p
+}
+
+func (s *ArrayTypeContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ArrayTypeContext) GetLbrack() antlr.Token { return s.lbrack }
+
+func (s *ArrayTypeContext) GetRbrack() antlr.Token { return s.rbrack }
+
+func (s *ArrayTypeContext) SetLbrack(v antlr.Token) { s.lbrack = v }
+
+func (s *ArrayTypeContext) SetRbrack(v antlr.Token) { s.rbrack = v }
+
+func (s *ArrayTypeContext) DataType() IDataTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IDataTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IDataTypeContext)
+}
+
+func (s *ArrayTypeContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ArrayTypeContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ArrayTypeContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitArrayType(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ArrayType() (localctx IArrayTypeContext) {
+	localctx = NewArrayTypeContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 48, ApiParserParserRULE_arrayType)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(233)
+
+		var _m = p.Match(ApiParserParserT__7)
+
+		localctx.(*ArrayTypeContext).lbrack = _m
+	}
+	{
+		p.SetState(234)
+
+		var _m = p.Match(ApiParserParserT__8)
+
+		localctx.(*ArrayTypeContext).rbrack = _m
+	}
+	{
+		p.SetState(235)
+		p.DataType()
+	}
+
+	return localctx
+}
+
+// IServiceSpecContext is an interface to support dynamic dispatch.
+type IServiceSpecContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsServiceSpecContext differentiates from other interfaces.
+	IsServiceSpecContext()
+}
+
+type ServiceSpecContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyServiceSpecContext() *ServiceSpecContext {
+	var p = new(ServiceSpecContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_serviceSpec
+	return p
+}
+
+func (*ServiceSpecContext) IsServiceSpecContext() {}
+
+func NewServiceSpecContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ServiceSpecContext {
+	var p = new(ServiceSpecContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_serviceSpec
+
+	return p
+}
+
+func (s *ServiceSpecContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ServiceSpecContext) ServiceApi() IServiceApiContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IServiceApiContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IServiceApiContext)
+}
+
+func (s *ServiceSpecContext) AtServer() IAtServerContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IAtServerContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IAtServerContext)
+}
+
+func (s *ServiceSpecContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ServiceSpecContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ServiceSpecContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitServiceSpec(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ServiceSpec() (localctx IServiceSpecContext) {
+	localctx = NewServiceSpecContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 50, ApiParserParserRULE_serviceSpec)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	p.SetState(238)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserATSERVER {
+		{
+			p.SetState(237)
+			p.AtServer()
+		}
+
+	}
+	{
+		p.SetState(240)
+		p.ServiceApi()
+	}
+
+	return localctx
+}
+
+// IAtServerContext is an interface to support dynamic dispatch.
+type IAtServerContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetLp returns the lp token.
+	GetLp() antlr.Token
+
+	// GetRp returns the rp token.
+	GetRp() antlr.Token
+
+	// SetLp sets the lp token.
+	SetLp(antlr.Token)
+
+	// SetRp sets the rp token.
+	SetRp(antlr.Token)
+
+	// IsAtServerContext differentiates from other interfaces.
+	IsAtServerContext()
+}
+
+type AtServerContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	lp     antlr.Token
+	rp     antlr.Token
+}
+
+func NewEmptyAtServerContext() *AtServerContext {
+	var p = new(AtServerContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_atServer
+	return p
+}
+
+func (*AtServerContext) IsAtServerContext() {}
+
+func NewAtServerContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *AtServerContext {
+	var p = new(AtServerContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_atServer
+
+	return p
+}
+
+func (s *AtServerContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *AtServerContext) GetLp() antlr.Token { return s.lp }
+
+func (s *AtServerContext) GetRp() antlr.Token { return s.rp }
+
+func (s *AtServerContext) SetLp(v antlr.Token) { s.lp = v }
+
+func (s *AtServerContext) SetRp(v antlr.Token) { s.rp = v }
+
+func (s *AtServerContext) ATSERVER() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserATSERVER, 0)
+}
+
+func (s *AtServerContext) AllKvLit() []IKvLitContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IKvLitContext)(nil)).Elem())
+	var tst = make([]IKvLitContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IKvLitContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *AtServerContext) KvLit(i int) IKvLitContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IKvLitContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IKvLitContext)
+}
+
+func (s *AtServerContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *AtServerContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *AtServerContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitAtServer(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) AtServer() (localctx IAtServerContext) {
+	localctx = NewAtServerContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 52, ApiParserParserRULE_atServer)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(242)
+		p.Match(ApiParserParserATSERVER)
+	}
+	{
+		p.SetState(243)
+
+		var _m = p.Match(ApiParserParserT__1)
+
+		localctx.(*AtServerContext).lp = _m
+	}
+	p.SetState(245)
+	p.GetErrorHandler().Sync(p)
+
+	for ok := true; ok; ok = _la == ApiParserParserID {
+		{
+			p.SetState(244)
+			p.KvLit()
+		}
+
+		p.SetState(247)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+	}
+	{
+		p.SetState(249)
+
+		var _m = p.Match(ApiParserParserT__2)
+
+		localctx.(*AtServerContext).rp = _m
+	}
+
+	return localctx
+}
+
+// IServiceApiContext is an interface to support dynamic dispatch.
+type IServiceApiContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetServiceToken returns the serviceToken token.
+	GetServiceToken() antlr.Token
+
+	// GetLbrace returns the lbrace token.
+	GetLbrace() antlr.Token
+
+	// GetRbrace returns the rbrace token.
+	GetRbrace() antlr.Token
+
+	// SetServiceToken sets the serviceToken token.
+	SetServiceToken(antlr.Token)
+
+	// SetLbrace sets the lbrace token.
+	SetLbrace(antlr.Token)
+
+	// SetRbrace sets the rbrace token.
+	SetRbrace(antlr.Token)
+
+	// IsServiceApiContext differentiates from other interfaces.
+	IsServiceApiContext()
+}
+
+type ServiceApiContext struct {
+	*antlr.BaseParserRuleContext
+	parser       antlr.Parser
+	serviceToken antlr.Token
+	lbrace       antlr.Token
+	rbrace       antlr.Token
+}
+
+func NewEmptyServiceApiContext() *ServiceApiContext {
+	var p = new(ServiceApiContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_serviceApi
+	return p
+}
+
+func (*ServiceApiContext) IsServiceApiContext() {}
+
+func NewServiceApiContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ServiceApiContext {
+	var p = new(ServiceApiContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_serviceApi
+
+	return p
+}
+
+func (s *ServiceApiContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ServiceApiContext) GetServiceToken() antlr.Token { return s.serviceToken }
+
+func (s *ServiceApiContext) GetLbrace() antlr.Token { return s.lbrace }
+
+func (s *ServiceApiContext) GetRbrace() antlr.Token { return s.rbrace }
+
+func (s *ServiceApiContext) SetServiceToken(v antlr.Token) { s.serviceToken = v }
+
+func (s *ServiceApiContext) SetLbrace(v antlr.Token) { s.lbrace = v }
+
+func (s *ServiceApiContext) SetRbrace(v antlr.Token) { s.rbrace = v }
+
+func (s *ServiceApiContext) ServiceName() IServiceNameContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IServiceNameContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IServiceNameContext)
+}
+
+func (s *ServiceApiContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *ServiceApiContext) AllServiceRoute() []IServiceRouteContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IServiceRouteContext)(nil)).Elem())
+	var tst = make([]IServiceRouteContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IServiceRouteContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *ServiceApiContext) ServiceRoute(i int) IServiceRouteContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IServiceRouteContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IServiceRouteContext)
+}
+
+func (s *ServiceApiContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ServiceApiContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ServiceApiContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitServiceApi(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ServiceApi() (localctx IServiceApiContext) {
+	localctx = NewServiceApiContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 54, ApiParserParserRULE_serviceApi)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	match(p, "service")
+	{
+		p.SetState(252)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*ServiceApiContext).serviceToken = _m
+	}
+	{
+		p.SetState(253)
+		p.ServiceName()
+	}
+	{
+		p.SetState(254)
+
+		var _m = p.Match(ApiParserParserT__3)
+
+		localctx.(*ServiceApiContext).lbrace = _m
+	}
+	p.SetState(258)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	for ((_la)&-(0x1f+1)) == 0 && ((1<<uint(_la))&((1<<ApiParserParserATDOC)|(1<<ApiParserParserATHANDLER)|(1<<ApiParserParserATSERVER))) != 0 {
+		{
+			p.SetState(255)
+			p.ServiceRoute()
+		}
+
+		p.SetState(260)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+	}
+	{
+		p.SetState(261)
+
+		var _m = p.Match(ApiParserParserT__4)
+
+		localctx.(*ServiceApiContext).rbrace = _m
+	}
+
+	return localctx
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser7.go

@@ -0,0 +1,676 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 7
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+// IServiceRouteContext is an interface to support dynamic dispatch.
+type IServiceRouteContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsServiceRouteContext differentiates from other interfaces.
+	IsServiceRouteContext()
+}
+
+type ServiceRouteContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyServiceRouteContext() *ServiceRouteContext {
+	var p = new(ServiceRouteContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_serviceRoute
+	return p
+}
+
+func (*ServiceRouteContext) IsServiceRouteContext() {}
+
+func NewServiceRouteContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ServiceRouteContext {
+	var p = new(ServiceRouteContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_serviceRoute
+
+	return p
+}
+
+func (s *ServiceRouteContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ServiceRouteContext) Route() IRouteContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IRouteContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IRouteContext)
+}
+
+func (s *ServiceRouteContext) AtServer() IAtServerContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IAtServerContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IAtServerContext)
+}
+
+func (s *ServiceRouteContext) AtHandler() IAtHandlerContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IAtHandlerContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IAtHandlerContext)
+}
+
+func (s *ServiceRouteContext) AtDoc() IAtDocContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IAtDocContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IAtDocContext)
+}
+
+func (s *ServiceRouteContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ServiceRouteContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ServiceRouteContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitServiceRoute(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ServiceRoute() (localctx IServiceRouteContext) {
+	localctx = NewServiceRouteContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 56, ApiParserParserRULE_serviceRoute)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	p.SetState(264)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserATDOC {
+		{
+			p.SetState(263)
+			p.AtDoc()
+		}
+
+	}
+	p.SetState(268)
+	p.GetErrorHandler().Sync(p)
+
+	switch p.GetTokenStream().LA(1) {
+	case ApiParserParserATSERVER:
+		{
+			p.SetState(266)
+			p.AtServer()
+		}
+
+	case ApiParserParserATHANDLER:
+		{
+			p.SetState(267)
+			p.AtHandler()
+		}
+
+	default:
+		panic(antlr.NewNoViableAltException(p, nil, nil, nil, nil, nil))
+	}
+	{
+		p.SetState(270)
+		p.Route()
+	}
+
+	return localctx
+}
+
+// IAtDocContext is an interface to support dynamic dispatch.
+type IAtDocContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetLp returns the lp token.
+	GetLp() antlr.Token
+
+	// GetRp returns the rp token.
+	GetRp() antlr.Token
+
+	// SetLp sets the lp token.
+	SetLp(antlr.Token)
+
+	// SetRp sets the rp token.
+	SetRp(antlr.Token)
+
+	// IsAtDocContext differentiates from other interfaces.
+	IsAtDocContext()
+}
+
+type AtDocContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	lp     antlr.Token
+	rp     antlr.Token
+}
+
+func NewEmptyAtDocContext() *AtDocContext {
+	var p = new(AtDocContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_atDoc
+	return p
+}
+
+func (*AtDocContext) IsAtDocContext() {}
+
+func NewAtDocContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *AtDocContext {
+	var p = new(AtDocContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_atDoc
+
+	return p
+}
+
+func (s *AtDocContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *AtDocContext) GetLp() antlr.Token { return s.lp }
+
+func (s *AtDocContext) GetRp() antlr.Token { return s.rp }
+
+func (s *AtDocContext) SetLp(v antlr.Token) { s.lp = v }
+
+func (s *AtDocContext) SetRp(v antlr.Token) { s.rp = v }
+
+func (s *AtDocContext) ATDOC() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserATDOC, 0)
+}
+
+func (s *AtDocContext) STRING() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserSTRING, 0)
+}
+
+func (s *AtDocContext) AllKvLit() []IKvLitContext {
+	var ts = s.GetTypedRuleContexts(reflect.TypeOf((*IKvLitContext)(nil)).Elem())
+	var tst = make([]IKvLitContext, len(ts))
+
+	for i, t := range ts {
+		if t != nil {
+			tst[i] = t.(IKvLitContext)
+		}
+	}
+
+	return tst
+}
+
+func (s *AtDocContext) KvLit(i int) IKvLitContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IKvLitContext)(nil)).Elem(), i)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IKvLitContext)
+}
+
+func (s *AtDocContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *AtDocContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *AtDocContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitAtDoc(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) AtDoc() (localctx IAtDocContext) {
+	localctx = NewAtDocContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 58, ApiParserParserRULE_atDoc)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(272)
+		p.Match(ApiParserParserATDOC)
+	}
+	p.SetState(274)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserT__1 {
+		{
+			p.SetState(273)
+
+			var _m = p.Match(ApiParserParserT__1)
+
+			localctx.(*AtDocContext).lp = _m
+		}
+
+	}
+	p.SetState(282)
+	p.GetErrorHandler().Sync(p)
+
+	switch p.GetTokenStream().LA(1) {
+	case ApiParserParserID:
+		p.SetState(277)
+		p.GetErrorHandler().Sync(p)
+
+		for ok := true; ok; ok = _la == ApiParserParserID {
+			{
+				p.SetState(276)
+				p.KvLit()
+			}
+
+			p.SetState(279)
+			p.GetErrorHandler().Sync(p)
+			_la = p.GetTokenStream().LA(1)
+		}
+
+	case ApiParserParserSTRING:
+		{
+			p.SetState(281)
+			p.Match(ApiParserParserSTRING)
+		}
+
+	default:
+		panic(antlr.NewNoViableAltException(p, nil, nil, nil, nil, nil))
+	}
+	p.SetState(285)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserT__2 {
+		{
+			p.SetState(284)
+
+			var _m = p.Match(ApiParserParserT__2)
+
+			localctx.(*AtDocContext).rp = _m
+		}
+
+	}
+
+	return localctx
+}
+
+// IAtHandlerContext is an interface to support dynamic dispatch.
+type IAtHandlerContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsAtHandlerContext differentiates from other interfaces.
+	IsAtHandlerContext()
+}
+
+type AtHandlerContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyAtHandlerContext() *AtHandlerContext {
+	var p = new(AtHandlerContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_atHandler
+	return p
+}
+
+func (*AtHandlerContext) IsAtHandlerContext() {}
+
+func NewAtHandlerContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *AtHandlerContext {
+	var p = new(AtHandlerContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_atHandler
+
+	return p
+}
+
+func (s *AtHandlerContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *AtHandlerContext) ATHANDLER() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserATHANDLER, 0)
+}
+
+func (s *AtHandlerContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *AtHandlerContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *AtHandlerContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *AtHandlerContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitAtHandler(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) AtHandler() (localctx IAtHandlerContext) {
+	localctx = NewAtHandlerContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 60, ApiParserParserRULE_atHandler)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(287)
+		p.Match(ApiParserParserATHANDLER)
+	}
+	{
+		p.SetState(288)
+		p.Match(ApiParserParserID)
+	}
+
+	return localctx
+}
+
+// IRouteContext is an interface to support dynamic dispatch.
+type IRouteContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetHttpMethod returns the httpMethod token.
+	GetHttpMethod() antlr.Token
+
+	// GetReturnToken returns the returnToken token.
+	GetReturnToken() antlr.Token
+
+	// SetHttpMethod sets the httpMethod token.
+	SetHttpMethod(antlr.Token)
+
+	// SetReturnToken sets the returnToken token.
+	SetReturnToken(antlr.Token)
+
+	// GetRequest returns the request rule contexts.
+	GetRequest() IBodyContext
+
+	// GetResponse returns the response rule contexts.
+	GetResponse() IReplybodyContext
+
+	// SetRequest sets the request rule contexts.
+	SetRequest(IBodyContext)
+
+	// SetResponse sets the response rule contexts.
+	SetResponse(IReplybodyContext)
+
+	// IsRouteContext differentiates from other interfaces.
+	IsRouteContext()
+}
+
+type RouteContext struct {
+	*antlr.BaseParserRuleContext
+	parser      antlr.Parser
+	httpMethod  antlr.Token
+	request     IBodyContext
+	returnToken antlr.Token
+	response    IReplybodyContext
+}
+
+func NewEmptyRouteContext() *RouteContext {
+	var p = new(RouteContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_route
+	return p
+}
+
+func (*RouteContext) IsRouteContext() {}
+
+func NewRouteContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *RouteContext {
+	var p = new(RouteContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_route
+
+	return p
+}
+
+func (s *RouteContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *RouteContext) GetHttpMethod() antlr.Token { return s.httpMethod }
+
+func (s *RouteContext) GetReturnToken() antlr.Token { return s.returnToken }
+
+func (s *RouteContext) SetHttpMethod(v antlr.Token) { s.httpMethod = v }
+
+func (s *RouteContext) SetReturnToken(v antlr.Token) { s.returnToken = v }
+
+func (s *RouteContext) GetRequest() IBodyContext { return s.request }
+
+func (s *RouteContext) GetResponse() IReplybodyContext { return s.response }
+
+func (s *RouteContext) SetRequest(v IBodyContext) { s.request = v }
+
+func (s *RouteContext) SetResponse(v IReplybodyContext) { s.response = v }
+
+func (s *RouteContext) Path() IPathContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IPathContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IPathContext)
+}
+
+func (s *RouteContext) AllID() []antlr.TerminalNode {
+	return s.GetTokens(ApiParserParserID)
+}
+
+func (s *RouteContext) ID(i int) antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, i)
+}
+
+func (s *RouteContext) Body() IBodyContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IBodyContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IBodyContext)
+}
+
+func (s *RouteContext) Replybody() IReplybodyContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IReplybodyContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IReplybodyContext)
+}
+
+func (s *RouteContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *RouteContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *RouteContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitRoute(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) Route() (localctx IRouteContext) {
+	localctx = NewRouteContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 62, ApiParserParserRULE_route)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	checkHTTPMethod(p)
+	{
+		p.SetState(291)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*RouteContext).httpMethod = _m
+	}
+	{
+		p.SetState(292)
+		p.Path()
+	}
+	p.SetState(294)
+	p.GetErrorHandler().Sync(p)
+
+	if p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 28, p.GetParserRuleContext()) == 1 {
+		{
+			p.SetState(293)
+
+			var _x = p.Body()
+
+			localctx.(*RouteContext).request = _x
+		}
+
+	}
+	p.SetState(297)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserID {
+		{
+			p.SetState(296)
+
+			var _m = p.Match(ApiParserParserID)
+
+			localctx.(*RouteContext).returnToken = _m
+		}
+
+	}
+	p.SetState(300)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserT__1 {
+		{
+			p.SetState(299)
+
+			var _x = p.Replybody()
+
+			localctx.(*RouteContext).response = _x
+		}
+
+	}
+
+	return localctx
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser8.go

@@ -0,0 +1,697 @@
+package api
+
+import (
+	"reflect"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 8
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+// IBodyContext is an interface to support dynamic dispatch.
+type IBodyContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetLp returns the lp token.
+	GetLp() antlr.Token
+
+	// GetRp returns the rp token.
+	GetRp() antlr.Token
+
+	// SetLp sets the lp token.
+	SetLp(antlr.Token)
+
+	// SetRp sets the rp token.
+	SetRp(antlr.Token)
+
+	// IsBodyContext differentiates from other interfaces.
+	IsBodyContext()
+}
+
+type BodyContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	lp     antlr.Token
+	rp     antlr.Token
+}
+
+func NewEmptyBodyContext() *BodyContext {
+	var p = new(BodyContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_body
+	return p
+}
+
+func (*BodyContext) IsBodyContext() {}
+
+func NewBodyContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *BodyContext {
+	var p = new(BodyContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_body
+
+	return p
+}
+
+func (s *BodyContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *BodyContext) GetLp() antlr.Token { return s.lp }
+
+func (s *BodyContext) GetRp() antlr.Token { return s.rp }
+
+func (s *BodyContext) SetLp(v antlr.Token) { s.lp = v }
+
+func (s *BodyContext) SetRp(v antlr.Token) { s.rp = v }
+
+func (s *BodyContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *BodyContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *BodyContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *BodyContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitBody(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) Body() (localctx IBodyContext) {
+	localctx = NewBodyContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 64, ApiParserParserRULE_body)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(302)
+
+		var _m = p.Match(ApiParserParserT__1)
+
+		localctx.(*BodyContext).lp = _m
+	}
+	p.SetState(304)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if _la == ApiParserParserID {
+		{
+			p.SetState(303)
+			p.Match(ApiParserParserID)
+		}
+
+	}
+	{
+		p.SetState(306)
+
+		var _m = p.Match(ApiParserParserT__2)
+
+		localctx.(*BodyContext).rp = _m
+	}
+
+	return localctx
+}
+
+// IReplybodyContext is an interface to support dynamic dispatch.
+type IReplybodyContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetLp returns the lp token.
+	GetLp() antlr.Token
+
+	// GetRp returns the rp token.
+	GetRp() antlr.Token
+
+	// SetLp sets the lp token.
+	SetLp(antlr.Token)
+
+	// SetRp sets the rp token.
+	SetRp(antlr.Token)
+
+	// IsReplybodyContext differentiates from other interfaces.
+	IsReplybodyContext()
+}
+
+type ReplybodyContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	lp     antlr.Token
+	rp     antlr.Token
+}
+
+func NewEmptyReplybodyContext() *ReplybodyContext {
+	var p = new(ReplybodyContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_replybody
+	return p
+}
+
+func (*ReplybodyContext) IsReplybodyContext() {}
+
+func NewReplybodyContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ReplybodyContext {
+	var p = new(ReplybodyContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_replybody
+
+	return p
+}
+
+func (s *ReplybodyContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ReplybodyContext) GetLp() antlr.Token { return s.lp }
+
+func (s *ReplybodyContext) GetRp() antlr.Token { return s.rp }
+
+func (s *ReplybodyContext) SetLp(v antlr.Token) { s.lp = v }
+
+func (s *ReplybodyContext) SetRp(v antlr.Token) { s.rp = v }
+
+func (s *ReplybodyContext) DataType() IDataTypeContext {
+	var t = s.GetTypedRuleContext(reflect.TypeOf((*IDataTypeContext)(nil)).Elem(), 0)
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IDataTypeContext)
+}
+
+func (s *ReplybodyContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ReplybodyContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ReplybodyContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitReplybody(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) Replybody() (localctx IReplybodyContext) {
+	localctx = NewReplybodyContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 66, ApiParserParserRULE_replybody)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(308)
+
+		var _m = p.Match(ApiParserParserT__1)
+
+		localctx.(*ReplybodyContext).lp = _m
+	}
+	p.SetState(310)
+	p.GetErrorHandler().Sync(p)
+	_la = p.GetTokenStream().LA(1)
+
+	if ((_la)&-(0x1f+1)) == 0 && ((1<<uint(_la))&((1<<ApiParserParserT__5)|(1<<ApiParserParserT__6)|(1<<ApiParserParserT__7)|(1<<ApiParserParserINTERFACE)|(1<<ApiParserParserID))) != 0 {
+		{
+			p.SetState(309)
+			p.DataType()
+		}
+
+	}
+	{
+		p.SetState(312)
+
+		var _m = p.Match(ApiParserParserT__2)
+
+		localctx.(*ReplybodyContext).rp = _m
+	}
+
+	return localctx
+}
+
+// IKvLitContext is an interface to support dynamic dispatch.
+type IKvLitContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// GetKey returns the key token.
+	GetKey() antlr.Token
+
+	// GetValue returns the value token.
+	GetValue() antlr.Token
+
+	// SetKey sets the key token.
+	SetKey(antlr.Token)
+
+	// SetValue sets the value token.
+	SetValue(antlr.Token)
+
+	// IsKvLitContext differentiates from other interfaces.
+	IsKvLitContext()
+}
+
+type KvLitContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+	key    antlr.Token
+	value  antlr.Token
+}
+
+func NewEmptyKvLitContext() *KvLitContext {
+	var p = new(KvLitContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_kvLit
+	return p
+}
+
+func (*KvLitContext) IsKvLitContext() {}
+
+func NewKvLitContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *KvLitContext {
+	var p = new(KvLitContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_kvLit
+
+	return p
+}
+
+func (s *KvLitContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *KvLitContext) GetKey() antlr.Token { return s.key }
+
+func (s *KvLitContext) GetValue() antlr.Token { return s.value }
+
+func (s *KvLitContext) SetKey(v antlr.Token) { s.key = v }
+
+func (s *KvLitContext) SetValue(v antlr.Token) { s.value = v }
+
+func (s *KvLitContext) ID() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, 0)
+}
+
+func (s *KvLitContext) LINE_VALUE() antlr.TerminalNode {
+	return s.GetToken(ApiParserParserLINE_VALUE, 0)
+}
+
+func (s *KvLitContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *KvLitContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *KvLitContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitKvLit(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) KvLit() (localctx IKvLitContext) {
+	localctx = NewKvLitContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 68, ApiParserParserRULE_kvLit)
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(314)
+
+		var _m = p.Match(ApiParserParserID)
+
+		localctx.(*KvLitContext).key = _m
+	}
+	checkKeyValue(p)
+	{
+		p.SetState(316)
+
+		var _m = p.Match(ApiParserParserLINE_VALUE)
+
+		localctx.(*KvLitContext).value = _m
+	}
+
+	return localctx
+}
+
+// IServiceNameContext is an interface to support dynamic dispatch.
+type IServiceNameContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsServiceNameContext differentiates from other interfaces.
+	IsServiceNameContext()
+}
+
+type ServiceNameContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyServiceNameContext() *ServiceNameContext {
+	var p = new(ServiceNameContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_serviceName
+	return p
+}
+
+func (*ServiceNameContext) IsServiceNameContext() {}
+
+func NewServiceNameContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ServiceNameContext {
+	var p = new(ServiceNameContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_serviceName
+
+	return p
+}
+
+func (s *ServiceNameContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *ServiceNameContext) AllID() []antlr.TerminalNode {
+	return s.GetTokens(ApiParserParserID)
+}
+
+func (s *ServiceNameContext) ID(i int) antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, i)
+}
+
+func (s *ServiceNameContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *ServiceNameContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *ServiceNameContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitServiceName(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) ServiceName() (localctx IServiceNameContext) {
+	localctx = NewServiceNameContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 70, ApiParserParserRULE_serviceName)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.EnterOuterAlt(localctx, 1)
+	p.SetState(322)
+	p.GetErrorHandler().Sync(p)
+
+	for ok := true; ok; ok = _la == ApiParserParserID {
+		{
+			p.SetState(318)
+			p.Match(ApiParserParserID)
+		}
+		p.SetState(320)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+
+		if _la == ApiParserParserT__9 {
+			{
+				p.SetState(319)
+				p.Match(ApiParserParserT__9)
+			}
+
+		}
+
+		p.SetState(324)
+		p.GetErrorHandler().Sync(p)
+		_la = p.GetTokenStream().LA(1)
+	}
+
+	return localctx
+}
+
+// IPathContext is an interface to support dynamic dispatch.
+type IPathContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// IsPathContext differentiates from other interfaces.
+	IsPathContext()
+}
+
+type PathContext struct {
+	*antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyPathContext() *PathContext {
+	var p = new(PathContext)
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(nil, -1)
+	p.RuleIndex = ApiParserParserRULE_path
+	return p
+}
+
+func (*PathContext) IsPathContext() {}
+
+func NewPathContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *PathContext {
+	var p = new(PathContext)
+
+	p.BaseParserRuleContext = antlr.NewBaseParserRuleContext(parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = ApiParserParserRULE_path
+
+	return p
+}
+
+func (s *PathContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *PathContext) AllID() []antlr.TerminalNode {
+	return s.GetTokens(ApiParserParserID)
+}
+
+func (s *PathContext) ID(i int) antlr.TerminalNode {
+	return s.GetToken(ApiParserParserID, i)
+}
+
+func (s *PathContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *PathContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *PathContext) Accept(visitor antlr.ParseTreeVisitor) interface{} {
+	switch t := visitor.(type) {
+	case ApiParserVisitor:
+		return t.VisitPath(s)
+
+	default:
+		return t.VisitChildren(s)
+	}
+}
+
+func (p *ApiParserParser) Path() (localctx IPathContext) {
+	localctx = NewPathContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 72, ApiParserParserRULE_path)
+	var _la int
+
+	defer func() {
+		p.ExitRule()
+	}()
+
+	defer func() {
+		if err := recover(); err != nil {
+			if v, ok := err.(antlr.RecognitionException); ok {
+				localctx.SetException(v)
+				p.GetErrorHandler().ReportError(p, v)
+				p.GetErrorHandler().Recover(p, v)
+			} else {
+				panic(err)
+			}
+		}
+	}()
+
+	p.SetState(346)
+	p.GetErrorHandler().Sync(p)
+	switch p.GetInterpreter().AdaptivePredict(p.GetTokenStream(), 39, p.GetParserRuleContext()) {
+	case 1:
+		p.EnterOuterAlt(localctx, 1)
+		p.SetState(341)
+		p.GetErrorHandler().Sync(p)
+
+		for ok := true; ok; ok = _la == ApiParserParserT__10 || _la == ApiParserParserT__11 {
+			p.SetState(341)
+			p.GetErrorHandler().Sync(p)
+
+			switch p.GetTokenStream().LA(1) {
+			case ApiParserParserT__10:
+				{
+					p.SetState(326)
+					p.Match(ApiParserParserT__10)
+				}
+
+				{
+					p.SetState(327)
+					p.Match(ApiParserParserID)
+				}
+				p.SetState(332)
+				p.GetErrorHandler().Sync(p)
+				_la = p.GetTokenStream().LA(1)
+
+				for _la == ApiParserParserT__9 {
+					{
+						p.SetState(328)
+						p.Match(ApiParserParserT__9)
+					}
+					{
+						p.SetState(329)
+						p.Match(ApiParserParserID)
+					}
+
+					p.SetState(334)
+					p.GetErrorHandler().Sync(p)
+					_la = p.GetTokenStream().LA(1)
+				}
+
+			case ApiParserParserT__11:
+				{
+					p.SetState(335)
+					p.Match(ApiParserParserT__11)
+				}
+
+				{
+					p.SetState(336)
+					p.Match(ApiParserParserID)
+				}
+				p.SetState(339)
+				p.GetErrorHandler().Sync(p)
+				_la = p.GetTokenStream().LA(1)
+
+				if _la == ApiParserParserT__9 {
+					{
+						p.SetState(337)
+						p.Match(ApiParserParserT__9)
+					}
+					{
+						p.SetState(338)
+						p.Match(ApiParserParserID)
+					}
+
+				}
+
+			default:
+				panic(antlr.NewNoViableAltException(p, nil, nil, nil, nil, nil))
+			}
+
+			p.SetState(343)
+			p.GetErrorHandler().Sync(p)
+			_la = p.GetTokenStream().LA(1)
+		}
+
+	case 2:
+		p.EnterOuterAlt(localctx, 2)
+		{
+			p.SetState(345)
+			p.Match(ApiParserParserT__10)
+		}
+
+	}
+
+	return localctx
+}

tools/goctl/api/parser/g4/gen/api/apiparser_parser9.go

@@ -0,0 +1,35 @@
+package api
+
+import (
+	"fmt"
+
+	"github.com/zeromicro/antlr"
+)
+
+// Part 9
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+
+func (p *ApiParserParser) Sempred(localctx antlr.RuleContext, ruleIndex, predIndex int) bool {
+	switch ruleIndex {
+	case 18:
+		var t *FieldContext = nil
+		if localctx != nil {
+			t = localctx.(*FieldContext)
+		}
+		return p.Field_Sempred(t, predIndex)
+
+	default:
+		panic("No predicate with index: " + fmt.Sprint(ruleIndex))
+	}
+}
+
+func (p *ApiParserParser) Field_Sempred(localctx antlr.RuleContext, predIndex int) bool {
+	switch predIndex {
+	case 0:
+		return isNormal(p)
+
+	default:
+		panic("No predicate with index: " + fmt.Sprint(predIndex))
+	}
+}

tools/goctl/api/parser/g4/gen/api/apiparser_visitor.go

@@ -1,5 +1,3 @@
-// Code generated from tools/goctl/api/parser/g4/ApiParser.g4 by ANTLR 4.9. DO NOT EDIT.
-
 package api // ApiParser
 import "github.com/zeromicro/antlr"
 

tools/goctl/api/parser/g4/gen/api/file_splitor_test.go

@@ -0,0 +1,79 @@
+// DO NOT EDIT.
+// Tool: split apiparser_parser.go
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+package api
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestFileSplitor(t *testing.T) {
+	dir := "."
+	data, err := ioutil.ReadFile(filepath.Join(dir, "apiparser_parser.go"))
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	r := bytes.NewReader(data)
+	reader := bufio.NewReader(r)
+	var lines, files int
+	buffer := bytes.NewBuffer(nil)
+
+	for {
+		var fn, part = "apiparser_parser0.go", "main"
+		if files > 0 {
+			fn = fmt.Sprintf("apiparser_parser%d.go", files)
+			part = fmt.Sprintf("%d", files)
+		}
+		fp := filepath.Join(dir, fn)
+		buffer.Reset()
+		if files > 0 {
+			buffer.WriteString(fmt.Sprintf(`package api
+import "github.com/zeromicro/antlr"
+
+// Part %s
+// The apiparser_parser.go file was split into multiple files because it
+// was too large and caused a possible memory overflow during goctl installation.
+`, part))
+		}
+
+		var exit bool
+		for {
+			line, _, err := reader.ReadLine()
+			buffer.Write(line)
+			buffer.WriteRune('\n')
+			if err != nil {
+				fmt.Printf("%+v\n", err)
+				exit = true
+				break
+			}
+			lines += 1
+			if string(line) == "}" && lines >= 650 {
+				break
+			}
+		}
+
+		err = ioutil.WriteFile(fp, buffer.Bytes(), os.ModePerm)
+		if err != nil {
+			fmt.Printf("%+v\n", err)
+		}
+		if exit {
+			break
+		}
+		lines = 0
+		files += 1
+	}
+
+	err = os.Rename(filepath.Join(dir, "apiparser_parser0.go"), filepath.Join(dir, "apiparser_parser.go"))
+	if err != nil {
+		log.Fatalln(err)
+	}
+}

tools/goctl/api/parser/g4/test/service_test.go

@@ -174,7 +174,7 @@ func TestRoute(t *testing.T) {
 		assert.Error(t, err)
 
 		_, err = parser.Accept(fn, ` post /foo/bar returns (int)`)
-		assert.Error(t, err)
+		assert.Nil(t, err)
 
 		_, err = parser.Accept(fn, ` post /foo/bar returns (*int)`)
 		assert.Error(t, err)