Add retry mechanism to mongoDB, Redis, Kafka

.gitignore

@@ -389,3 +389,4 @@ Sessionx.vim
 [._]*.un~
 
 # End of https://www.toptal.com/developers/gitignore/api/go,git,vim,tags,test,emacs,backup,jetbrains
+.idea

pkg/common/db/cache/init_redis.go

@@ -27,6 +27,11 @@ import (
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"
 )
 
+const (
+	maxRetry = 10 //number of retries
+)
+
+// NewRedis Initialize redis connection
 func NewRedis() (redis.UniversalClient, error) {
 	if len(config.Config.Redis.Address) == 0 {
 		return nil, errors.New("redis address is empty")
@@ -39,6 +44,7 @@ func NewRedis() (redis.UniversalClient, error) {
 			Username:   config.Config.Redis.Username,
 			Password:   config.Config.Redis.Password, // no password set
 			PoolSize:   50,
+			MaxRetries: maxRetry,
 		})
 	} else {
 		rdb = redis.NewClient(&redis.Options{
@@ -46,14 +52,17 @@ func NewRedis() (redis.UniversalClient, error) {
 			Username:   config.Config.Redis.Username,
 			Password:   config.Config.Redis.Password, // no password set
 			DB:         0,                            // use default DB
-			PoolSize: 100,                          // 连接池大小
+			PoolSize:   100,                          // connection pool size
+			MaxRetries: maxRetry,
 		})
 	}
+
+	var err error = nil
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
 	defer cancel()
-	err := rdb.Ping(ctx).Err()
+	err = rdb.Ping(ctx).Err()
 	if err != nil {
 		return nil, fmt.Errorf("redis ping %w", err)
 	}
-	return rdb, nil
+	return rdb, err
 }

pkg/common/db/cache/init_redis_test.go

@@ -0,0 +1,30 @@
+// Copyright © 2023 OpenIM. 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 cache
+
+import (
+	"fmt"
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
+	"testing"
+)
+
+//TestNewRedis Test redis connection
+func TestNewRedis(t *testing.T) {
+	err := config.InitConfig("config_folder_path")
+	if err != nil {
+		fmt.Println("config load error")
+		return
+	}
+}

pkg/common/db/unrelation/extend_msg.go

@@ -100,7 +100,7 @@ func (e *ExtendMsgSetMongoDriver) GetExtendMsgSet(
 	return &setList[0], nil
 }
 
-// first modify msg
+// InsertExtendMsg first modify msg.
 func (e *ExtendMsgSetMongoDriver) InsertExtendMsg(
 	ctx context.Context,
 	conversationID string,
@@ -130,7 +130,7 @@ func (e *ExtendMsgSetMongoDriver) InsertExtendMsg(
 	return utils.Wrap(err, "")
 }
 
-// insert or update
+// InsertOrUpdateReactionExtendMsgSet insert or update.
 func (e *ExtendMsgSetMongoDriver) InsertOrUpdateReactionExtendMsgSet(
 	ctx context.Context,
 	conversationID string,
@@ -163,7 +163,7 @@ func (e *ExtendMsgSetMongoDriver) InsertOrUpdateReactionExtendMsgSet(
 	return utils.Wrap(err, "")
 }
 
-// delete TypeKey
+// DeleteReactionExtendMsgSet delete TypeKey.
 func (e *ExtendMsgSetMongoDriver) DeleteReactionExtendMsgSet(
 	ctx context.Context,
 	conversationID string,

pkg/common/db/unrelation/mongo.go

@@ -31,19 +31,21 @@ import (
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
 )
 
+const (
+	maxRetry = 10 //number of retries
+)
+
 type Mongo struct {
 	db *mongo.Client
 }
 
+// NewMongo Initialize MongoDB connection
 func NewMongo() (*Mongo, error) {
 	specialerror.AddReplace(mongo.ErrNoDocuments, errs.ErrRecordNotFound)
-	uri := "mongodb://sample.host:27017/?maxPoolSize=20&w=majority"
+	url := "mongodb://sample.host:27017/?maxPoolSize=20&w=majority"
 	if config.Config.Mongo.Uri != "" {
-		// example:
-		// mongodb://$user:$password@mongo1.mongo:27017,mongo2.mongo:27017,mongo3.mongo:27017/$DBDatabase/?replicaSet=rs0&readPreference=secondary&authSource=admin&maxPoolSize=$DBMaxPoolSize
-		uri = config.Config.Mongo.Uri
+		url = config.Config.Mongo.Uri
 	} else {
-		//mongodb://mongodb1.example.com:27317,mongodb2.example.com:27017/?replicaSet=mySet&authSource=authDB
 		mongodbHosts := ""
 		for i, v := range config.Config.Mongo.Address {
 			if i == len(config.Config.Mongo.Address)-1 {
@@ -53,23 +55,34 @@ func NewMongo() (*Mongo, error) {
 			}
 		}
 		if config.Config.Mongo.Password != "" && config.Config.Mongo.Username != "" {
-			uri = fmt.Sprintf("mongodb://%s:%s@%s/%s?maxPoolSize=%d&authSource=admin",
+			url = fmt.Sprintf("mongodb://%s:%s@%s/%s?maxPoolSize=%d&authSource=admin",
 				config.Config.Mongo.Username, config.Config.Mongo.Password, mongodbHosts,
 				config.Config.Mongo.Database, config.Config.Mongo.MaxPoolSize)
 		} else {
-			uri = fmt.Sprintf("mongodb://%s/%s/?maxPoolSize=%d&authSource=admin",
+			url = fmt.Sprintf("mongodb://%s/%s/?maxPoolSize=%d&authSource=admin",
 				mongodbHosts, config.Config.Mongo.Database,
 				config.Config.Mongo.MaxPoolSize)
 		}
 	}
-	fmt.Println("mongo:", uri)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*60)
+	fmt.Println("mongo:", url)
+	var mongoClient *mongo.Client
+	var err error = nil
+	for i := 0; i <= maxRetry; i++ {
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
 		defer cancel()
-	mongoClient, err := mongo.Connect(ctx, options.Client().ApplyURI(uri))
-	if err != nil {
+		mongoClient, err = mongo.Connect(ctx, options.Client().ApplyURI(url))
+		if err == nil {
+			return &Mongo{db: mongoClient}, nil
+		}
+		if cmdErr, ok := err.(mongo.CommandError); ok {
+			if cmdErr.Code == 13 || cmdErr.Code == 18 {
 				return nil, err
+			} else {
+				fmt.Printf("Failed to connect to MongoDB: %s\n", err)
 			}
-	return &Mongo{db: mongoClient}, nil
+		}
+	}
+	return nil, err
 }
 
 func (m *Mongo) GetClient() *mongo.Client {

pkg/common/http/http_client.go

@@ -1,9 +1,18 @@
-/*
-** description("").
-** copyright('open-im,www.open-im.io').
-** author("fg,Gordon@tuoyun.net").
-** time(2021/5/27 10:31).
- */package http
+// Copyright © 2023 OpenIM. 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 http
 
 import (
 	"bytes"

pkg/common/kafka/producer.go

@@ -17,12 +17,12 @@ package kafka
 import (
 	"context"
 	"errors"
-
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/constant"
 	log "github.com/OpenIMSDK/Open-IM-Server/pkg/common/log"
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/mcontext"
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
+	"time"
 
 	"github.com/Shopify/sarama"
 	"google.golang.org/protobuf/proto"
@@ -30,6 +30,10 @@ import (
 	prome "github.com/OpenIMSDK/Open-IM-Server/pkg/common/prome"
 )
 
+const (
+	maxRetry = 10 //number of retries
+)
+
 var errEmptyMsg = errors.New("binary msg is empty")
 
 type Producer struct {
@@ -39,6 +43,7 @@ type Producer struct {
 	producer sarama.SyncProducer
 }
 
+// NewKafkaProducer Initialize kafka producer
 func NewKafkaProducer(addr []string, topic string) *Producer {
 	p := Producer{}
 	p.config = sarama.NewConfig()             //Instantiate a sarama Config
@@ -53,9 +58,23 @@ func NewKafkaProducer(addr []string, topic string) *Producer {
 	}
 	p.addr = addr
 	p.topic = topic
-	producer, err := sarama.NewSyncProducer(p.addr, p.config) //Initialize the client
-	if err != nil {
-		panic(err.Error())
+	var producer sarama.SyncProducer
+	var err error
+	for i := 0; i <= maxRetry; i++ {
+		producer, err = sarama.NewSyncProducer(p.addr, p.config) //Initialize the client
+		if err == nil {
+			p.producer = producer
+			return &p
+		}
+		//TODO If the password is wrong, exit directly
+		//if packetErr, ok := err.(*sarama.PacketEncodingError); ok {
+		//if _, ok := packetErr.Err.(sarama.AuthenticationError); ok {
+		//	fmt.Println("Kafka password is wrong.")
+		//}
+		//} else {
+		//	fmt.Printf("Failed to create Kafka producer: %v\n", err)
+		//}
+		time.Sleep(time.Duration(1) * time.Second)
 	}
 	p.producer = producer
 	return &p

pkg/common/mw/gin.go

@@ -31,6 +31,7 @@ import (
 	"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"
 )
 
+// CorsHandler gin cross-domain configuration.
 func CorsHandler() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
@@ -39,19 +40,19 @@ func CorsHandler() gin.HandlerFunc {
 		c.Header(
 			"Access-Control-Expose-Headers",
 			"Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers,Cache-Control,Content-Language,Content-Type,Expires,Last-Modified,Pragma,FooBar",
-		) // 跨域关键设置 让浏览器可以解析
+		) // Cross-domain key settings allow browsers to resolve.
 		c.Header(
 			"Access-Control-Max-Age",
 			"172800",
-		) // 缓存请求信息 单位为秒
+		) // Cache request information in seconds.
 		c.Header(
 			"Access-Control-Allow-Credentials",
 			"false",
-		) //  跨域请求是否需要带cookie信息 默认设置为true
+		) //  Whether cross-domain requests need to carry cookie information, the default setting is true.
 		c.Header(
 			"content-type",
 			"application/json",
-		) // 设置返回格式是json
+		) // Set the return format to json.
 		//Release all option pre-requests
 		if c.Request.Method == http.MethodOptions {
 			c.JSON(http.StatusOK, "Options Request!")