gomod引用

mongo/mongo.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"strings"
+	"sync"
 	"time"
 
 	"gitee.com/red-future---jilin-g/common/consts"
@@ -22,37 +23,166 @@ import (
 	"go.mongodb.org/mongo-driver/v2/mongo/options"
 )
 
-var db *mongo.Database
+var (
+	db           *mongo.Database
+	client       *mongo.Client
+	isConnected  bool
+	mu           sync.RWMutex
+	mongoAddr    string
+	dbName       string
+	healthCtx    context.Context
+	healthCancel context.CancelFunc
+)
 
 // GetDB 获取 MongoDB 数据库实例
 func GetDB() *mongo.Database {
+	mu.RLock()
+	defer mu.RUnlock()
 	return db
 }
 
+// connect 建立MongoDB连接
+func connect() error {
+	mu.Lock()
+	defer mu.Unlock()
+
+	if client != nil {
+		err := client.Disconnect(context.Background())
+		if err != nil {
+			return err
+		}
+	}
+
+	// 创建连接选项
+	opt := options.Client().
+		ApplyURI(mongoAddr).
+		SetMaxPoolSize(100).
+		SetMinPoolSize(10).
+		SetMaxConnecting(10).
+		SetConnectTimeout(10 * time.Second)
+
+	var err error
+	client, err = mongo.Connect(opt)
+	if err != nil {
+		isConnected = false
+		glog.Error(context.Background(), "MongoDB连接失败", err)
+		return err
+	}
+
+	// 测试连接
+	testCtx, testCancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer testCancel()
+
+	err = client.Ping(testCtx, nil)
+	if err != nil {
+		isConnected = false
+		glog.Error(testCtx, "MongoDB连接测试失败", err)
+		return err
+	}
+
+	db = client.Database(dbName)
+	isConnected = true
+	glog.Info(context.Background(), "✅ MongoDB连接成功")
+	return nil
+}
+
+// healthCheck 健康检查协程
+func healthCheck() {
+	ticker := time.NewTicker(30 * time.Second)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-healthCtx.Done():
+			return
+		case <-ticker.C:
+			mu.RLock()
+			currentConnected := isConnected
+			currentClient := client
+			mu.RUnlock()
+
+			if !currentConnected || currentClient == nil {
+				glog.Warning(context.Background(), "MongoDB连接断开，尝试重连")
+				if err := reconnect(); err != nil {
+					glog.Error(context.Background(), "MongoDB重连失败", err)
+				}
+				continue
+			}
+
+			// 测试连接状态
+			testCtx, testCancel := context.WithTimeout(context.Background(), 5*time.Second)
+			err := currentClient.Ping(testCtx, nil)
+			testCancel()
+
+			if err != nil {
+				mu.Lock()
+				isConnected = false
+				mu.Unlock()
+				glog.Warning(context.Background(), "MongoDB连接健康检查失败", err)
+
+				// 尝试重连
+				if err := reconnect(); err != nil {
+					glog.Error(context.Background(), "MongoDB重连失败", err)
+				}
+			} else {
+				glog.Debug(context.Background(), "MongoDB连接健康检查通过")
+			}
+		}
+	}
+}
+
+// reconnect 重连函数
+func reconnect() error {
+	maxRetries := 3
+	retryDelay := 2 * time.Second
+
+	for i := 0; i < maxRetries; i++ {
+		glog.Info(context.Background(), fmt.Sprintf("尝试第%d次重连MongoDB", i+1))
+
+		if err := connect(); err == nil {
+			glog.Info(context.Background(), "MongoDB重连成功")
+			return nil
+		}
+
+		if i < maxRetries-1 {
+			time.Sleep(retryDelay)
+			retryDelay *= 2 // 指数退避
+		}
+	}
+
+	return gerror.New("MongoDB重连失败，已达到最大重试次数")
+}
+
+// init 初始化MongoDB连接
 func init() {
 	// 按需初始化：没有配置 mongo.address 则跳过
-	mongoAddr := g.Cfg().MustGet(context.Background(), "mongo.address").String()
+	mongoAddr = g.Cfg().MustGet(context.Background(), "mongo.address").String()
 	if mongoAddr == "" {
 		return
 	}
 
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
-	opt := options.Client().ApplyURI(mongoAddr)
-	client, err := mongo.Connect(opt)
-	if err != nil {
-		glog.Error(ctx, "mongodb连接失败", err)
-		return
-	}
+	// 创建健康检查上下文
+	healthCtx, healthCancel = context.WithCancel(context.Background())
+
 	// 从连接串中解析数据库名
-	dbName := gstr.SubStr(mongoAddr, strings.LastIndex(mongoAddr, "/")+1, len(mongoAddr))
+	dbName = gstr.SubStr(mongoAddr, strings.LastIndex(mongoAddr, "/")+1, len(mongoAddr))
 	// 如果连接串带有参数（如 ?retryWrites=true），需要去掉参数部分
 	if strings.Contains(dbName, "?") {
 		dbName = gstr.SubStr(dbName, 0, strings.Index(dbName, "?"))
 	}
-	db = client.Database(dbName)
-	glog.Info(ctx, "✅ MongoDB 初始化成功")
+
+	// 初始连接
+	if err := connect(); err != nil {
+		glog.Error(context.Background(), "MongoDB初始连接失败", err)
+		return
 	}
+
+	// 启动健康检查协程
+	go healthCheck()
+
+	glog.Info(context.Background(), "✅ MongoDB初始化完成，连接健康检查已启动")
+}
+
 func listOptionsToMap(ctx context.Context, opts ...options.Lister[options.FindOptions]) (m map[string]interface{}) {
 	// 输出opts参数中的值
 	m = make(map[string]interface{})