optimize seq, specifying that seq is stored in the only certain unknown

internal/msgtransfer/persistent_msg_handler.go

@@ -0,0 +1,88 @@
+/*
+** description("").
+** copyright('tuoyun,www.tuoyun.net').
+** author("fg,Gordon@tuoyun.net").
+** time(2021/5/11 15:37).
+ */
+package msgtransfer
+
+import (
+	"context"
+
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/constant"
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/db/controller"
+	kfk "github.com/OpenIMSDK/Open-IM-Server/pkg/common/kafka"
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/log"
+	pbMsg "github.com/OpenIMSDK/Open-IM-Server/pkg/proto/msg"
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
+
+	"github.com/Shopify/sarama"
+	"google.golang.org/protobuf/proto"
+)
+
+type PersistentConsumerHandler struct {
+	persistentConsumerGroup *kfk.MConsumerGroup
+	chatLogDatabase         controller.ChatLogDatabase
+}
+
+func NewPersistentConsumerHandler(database controller.ChatLogDatabase) *PersistentConsumerHandler {
+	return &PersistentConsumerHandler{
+		persistentConsumerGroup: kfk.NewMConsumerGroup(&kfk.MConsumerGroupConfig{KafkaVersion: sarama.V2_0_0_0,
+			OffsetsInitial: sarama.OffsetNewest, IsReturnErr: false}, []string{config.Config.Kafka.LatestMsgToRedis.Topic},
+			config.Config.Kafka.Addr, config.Config.Kafka.ConsumerGroupID.MsgToMySql),
+		chatLogDatabase: database,
+	}
+}
+
+func (pc *PersistentConsumerHandler) handleChatWs2Mysql(ctx context.Context, cMsg *sarama.ConsumerMessage, msgKey string, _ sarama.ConsumerGroupSession) {
+	msg := cMsg.Value
+	var tag bool
+	msgFromMQ := pbMsg.MsgDataToMQ{}
+	err := proto.Unmarshal(msg, &msgFromMQ)
+	if err != nil {
+		log.ZError(ctx, "msg_transfer Unmarshal msg err", err)
+		return
+	}
+	return
+	log.ZDebug(ctx, "handleChatWs2Mysql", "msg", msgFromMQ.MsgData)
+	//Control whether to store history messages (mysql)
+	isPersist := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsPersistent)
+	//Only process receiver data
+	if isPersist {
+		switch msgFromMQ.MsgData.SessionType {
+		case constant.SingleChatType, constant.NotificationChatType:
+			if msgKey == msgFromMQ.MsgData.RecvID {
+				tag = true
+			}
+		case constant.GroupChatType:
+			if msgKey == msgFromMQ.MsgData.SendID {
+				tag = true
+			}
+		case constant.SuperGroupChatType:
+			tag = true
+		}
+		if tag {
+			log.ZInfo(ctx, "msg_transfer msg persisting", "msg", string(msg))
+			if err = pc.chatLogDatabase.CreateChatLog(&msgFromMQ); err != nil {
+				log.ZError(ctx, "Message insert failed", err, "msg", msgFromMQ.String())
+				return
+			}
+		}
+	}
+}
+func (PersistentConsumerHandler) Setup(_ sarama.ConsumerGroupSession) error   { return nil }
+func (PersistentConsumerHandler) Cleanup(_ sarama.ConsumerGroupSession) error { return nil }
+func (pc *PersistentConsumerHandler) ConsumeClaim(sess sarama.ConsumerGroupSession, claim sarama.ConsumerGroupClaim) error {
+	for msg := range claim.Messages() {
+		ctx := pc.persistentConsumerGroup.GetContextFromMsg(msg)
+		log.ZDebug(ctx, "kafka get info to mysql", "msgTopic", msg.Topic, "msgPartition", msg.Partition, "msg", string(msg.Value), "key", string(msg.Key))
+		if len(msg.Value) != 0 {
+			pc.handleChatWs2Mysql(ctx, msg, string(msg.Key), sess)
+		} else {
+			log.ZError(ctx, "msg get from kafka but is nil", nil, "key", msg.Key)
+		}
+		sess.MarkMessage(msg, "")
+	}
+	return nil
+}