Go: refactor (#17072)

Refactor stats

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

cmd/ragflow_server.go

@@ -368,8 +368,8 @@ func main() {
 		common.Warn("Failed to initialize server variables from Redis, using defaults", zap.String("error", err.Error()))
 	}
 
-	ctx := context.Background()
-	if err = server.StartServer(ctx, serverName); err != nil {
+	ctx, cancel := context.WithCancel(context.Background())
+	if err = server.StartServer(ctx, cancel, serverName); err != nil {
 		common.Error("Failed to start EE server", err)
 		os.Exit(1)
 	}

internal/engine/clickhouse/clickhouse.go

@@ -1,96 +0,0 @@
-//
-//  Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
-//
-//  Licensed under the Apache License, Version 2.0 (the "License");
-//  you may not use this file except in compliance with the License.
-//  You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-//  Unless required by applicable law or agreed to in writing, software
-//  distributed under the License is distributed on an "AS IS" BASIS,
-//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//  See the License for the specific language governing permissions and
-//  limitations under the License.
-//
-
-package clickhouse
-
-import (
-	"context"
-	"fmt"
-	"sync"
-	"time"
-
-	"github.com/ClickHouse/clickhouse-go/v2"
-	"github.com/ClickHouse/clickhouse-go/v2/lib/driver"
-)
-
-var (
-	globalDriver *Driver
-	once         sync.Once
-)
-
-// GetDriver gets global ClickHouse client instance
-func GetDriver() *Driver {
-	return globalDriver
-}
-
-type Driver struct {
-	conn   driver.Conn
-	config *clickhouse.Options
-}
-
-func Init(ctx context.Context, host string, port int, user, password, database string) error {
-	var err error
-	once.Do(func() {
-		address := fmt.Sprintf("%s:%d", host, port)
-
-		globalDriver = &Driver{}
-		globalDriver.config = &clickhouse.Options{
-			Addr: []string{address},
-			Auth: clickhouse.Auth{
-				Database: database,
-				Username: user,
-				Password: password,
-			},
-			DialTimeout:     5 * time.Second,
-			MaxOpenConns:    10,
-			MaxIdleConns:    5,
-			ConnMaxLifetime: time.Hour,
-		}
-
-		globalDriver.conn, err = clickhouse.Open(globalDriver.config)
-		if err != nil {
-			return
-		}
-
-		if err = globalDriver.conn.Ping(ctx); err != nil {
-			return
-		}
-	})
-	return err
-}
-
-func (d *Driver) Ping(ctx context.Context) error {
-	return d.conn.Ping(ctx)
-}
-
-func (d *Driver) Status() (map[string]interface{}, error) {
-	stats := d.conn.Stats()
-	version, err := d.conn.ServerVersion()
-	if err != nil {
-		return nil, fmt.Errorf("failed to get server version: %w", err)
-	}
-	return map[string]interface{}{
-		"max_open_conns": stats.MaxOpenConns,
-		"max_idle_conns": stats.MaxIdleConns,
-		"open":           stats.Open,
-		"idle":           stats.Idle,
-		"server_version": version.String(),
-	}, nil
-}
-
-func Close() error {
-	return globalDriver.conn.Close()
-}

internal/engine/clickhouse/clickhouse_ee.go

@@ -18,11 +18,29 @@ package clickhouse
 
 import (
 	"ragflow/internal/common"
+	"sync"
 )
 
+var (
+	globalDriver *Driver
+	once         sync.Once
+)
+
+type Driver struct {
+}
+
+// GetDriver gets global stats client instance
+func GetDriver() *Driver {
+	return globalDriver
+}
+
 func (d *Driver) CollectModelUsage(modelUsage *common.ModelUsage) error {
 	//if modelUsage != nil {
 	//	common.Info("CollectModelUsage", zap.Any("modelUsage", modelUsage.String()))
 	//}
 	return nil
 }
+
+func (d *Driver) Status() (map[string]interface{}, error) {
+	return nil, nil
+}

internal/server/server_ee.go

@@ -37,7 +37,7 @@ func newEEServer() *EEServer {
 	return &EEServer{}
 }
 
-func StartServer(ctx context.Context, serverName string) error {
+func StartServer(ctx context.Context, cancel context.CancelFunc, serverName string) error {
 	if serverEE == nil {
 		return errors.New("server EE is nil")
 	}