package logic

import (
	"Open_IM/pkg/common/config"
	"Open_IM/pkg/common/constant"
	"Open_IM/pkg/common/db"
	kfk "Open_IM/pkg/common/kafka"
	"Open_IM/pkg/common/log"
	"Open_IM/pkg/grpc-etcdv3/getcdv3"
	pbMsg "Open_IM/pkg/proto/chat"
	pbPush "Open_IM/pkg/proto/push"
	"Open_IM/pkg/utils"
	"context"
	"errors"
	"github.com/Shopify/sarama"
	"github.com/golang/protobuf/proto"
	"hash/crc32"
	"strings"
	"time"
)

type MsgChannelValue struct {
	userID    string
	triggerID string
	msgList   []*pbMsg.MsgDataToMQ
	lastSeq   uint64
}
type TriggerChannelValue struct {
	triggerID string
	cmsgList  []*sarama.ConsumerMessage
}
type fcb func(cMsg *sarama.ConsumerMessage, msgKey string, sess sarama.ConsumerGroupSession)
type Cmd2Value struct {
	Cmd   int
	Value interface{}
}
type OnlineHistoryConsumerHandler struct {
	msgHandle            map[string]fcb
	historyConsumerGroup *kfk.MConsumerGroup
	cmdCh                chan Cmd2Value
	msgCh                chan Cmd2Value
	chArrays             [ChannelNum]chan Cmd2Value
	chMongoArrays        [ChannelNum]chan Cmd2Value
	msgDistributionCh    chan Cmd2Value
}

func (och *OnlineHistoryConsumerHandler) Init(cmdCh chan Cmd2Value) {
	och.msgHandle = make(map[string]fcb)
	och.msgDistributionCh = make(chan Cmd2Value) //no buffer channel
	go och.MessagesDistributionHandle()
	och.cmdCh = cmdCh
	och.msgCh = make(chan Cmd2Value, 1000)
	for i := 0; i < ChannelNum; i++ {
		och.chArrays[i] = make(chan Cmd2Value, 1000)
		go och.Run(i)
	}
	for i := 0; i < ChannelNum; i++ {
		och.chMongoArrays[i] = make(chan Cmd2Value, 10000)
		go och.MongoMessageRun(i)
	}
	if config.Config.ReliableStorage {
		och.msgHandle[config.Config.Kafka.Ws2mschat.Topic] = och.handleChatWs2Mongo
	} else {
		och.msgHandle[config.Config.Kafka.Ws2mschat.Topic] = och.handleChatWs2MongoLowReliability

	}
	och.historyConsumerGroup = kfk.NewMConsumerGroup(&kfk.MConsumerGroupConfig{KafkaVersion: sarama.V2_0_0_0,
		OffsetsInitial: sarama.OffsetNewest, IsReturnErr: false}, []string{config.Config.Kafka.Ws2mschat.Topic},
		config.Config.Kafka.Ws2mschat.Addr, config.Config.Kafka.ConsumerGroupID.MsgToMongo)

}
func (och *OnlineHistoryConsumerHandler) TriggerCmd(status int) {
	operationID := utils.OperationIDGenerator()
	err := sendCmd(och.cmdCh, Cmd2Value{Cmd: status, Value: ""}, 1)
	if err != nil {
		log.Error(operationID, "TriggerCmd failed ", err.Error(), status)
		return
	}
	log.Debug(operationID, "TriggerCmd success", status)

}
func sendCmd(ch chan Cmd2Value, value Cmd2Value, timeout int64) error {
	var flag = 0
	select {
	case ch <- value:
		flag = 1
	case <-time.After(time.Second * time.Duration(timeout)):
		flag = 2
	}
	if flag == 1 {
		return nil
	} else {
		return errors.New("send cmd timeout")
	}
}
func (och *OnlineHistoryConsumerHandler) Run(channelID int) {
	for {
		select {
		case cmd := <-och.chArrays[channelID]:
			switch cmd.Cmd {
			case UserMessages:
				msgChannelValue := cmd.Value.(MsgChannelValue)
				msgList := msgChannelValue.msgList
				triggerID := msgChannelValue.triggerID
				storageMsgList := make([]*pbMsg.MsgDataToMQ, 0, 80)
				noStoragepushMsgList := make([]*pbMsg.MsgDataToMQ, 0, 80)
				log.Debug(triggerID, "msg arrived channel", "channel id", channelID, msgList, msgChannelValue.userID, len(msgList))
				for _, v := range msgList {
					log.Debug(triggerID, "msg come to storage center", v.String())
					isHistory := utils.GetSwitchFromOptions(v.MsgData.Options, constant.IsHistory)
					isSenderSync := utils.GetSwitchFromOptions(v.MsgData.Options, constant.IsSenderSync)
					if isHistory {
						storageMsgList = append(storageMsgList, v)
						//log.NewWarn(triggerID, "storageMsgList to mongodb  client msgID: ", v.MsgData.ClientMsgID)
					} else {
						if !(!isSenderSync && msgChannelValue.userID == v.MsgData.SendID) {
							noStoragepushMsgList = append(noStoragepushMsgList, v)
						}
					}

				}

				//switch msgChannelValue.msg.MsgData.SessionType {
				//case constant.SingleChatType:
				//case constant.GroupChatType:
				//case constant.NotificationChatType:
				//default:
				//	log.NewError(msgFromMQ.OperationID, "SessionType error", msgFromMQ.String())
				//	return
				//}
				log.Debug(triggerID, "msg storage length", len(storageMsgList), "push length", len(noStoragepushMsgList))
				err, lastSeq := saveUserChatList(msgChannelValue.userID, storageMsgList, triggerID)
				if err != nil {
					singleMsgFailedCount += uint64(len(storageMsgList))
					log.NewError(triggerID, "single data insert to redis err", err.Error(), storageMsgList)
				} else {
					singleMsgSuccessCountMutex.Lock()
					singleMsgSuccessCount += uint64(len(storageMsgList))
					singleMsgSuccessCountMutex.Unlock()
					och.SendMessageToMongoCH(msgChannelValue.userID, triggerID, storageMsgList, lastSeq)
					go func(push, storage []*pbMsg.MsgDataToMQ) {
						for _, v := range storage {
							sendMessageToPush(v, msgChannelValue.userID)
						}
						for _, x := range push {
							sendMessageToPush(x, msgChannelValue.userID)
						}

					}(noStoragepushMsgList, storageMsgList)

				}
			}
		}
	}
}
func (och *OnlineHistoryConsumerHandler) SendMessageToMongoCH(userID string, triggerID string, messages []*pbMsg.MsgDataToMQ, lastSeq uint64) {
	hashCode := getHashCode(userID)
	channelID := hashCode % ChannelNum
	log.Debug(triggerID, "generate channelID", hashCode, channelID, userID)
	//go func(cID uint32, userID string, messages []*pbMsg.MsgDataToMQ) {
	och.chMongoArrays[channelID] <- Cmd2Value{Cmd: MongoMessages, Value: MsgChannelValue{userID: userID, msgList: messages, triggerID: triggerID, lastSeq: lastSeq}}
}
func (och *OnlineHistoryConsumerHandler) MongoMessageRun(channelID int) {
	for {
		select {
		case cmd := <-och.chArrays[channelID]:
			switch cmd.Cmd {
			case MongoMessages:
				msgChannelValue := cmd.Value.(MsgChannelValue)
				msgList := msgChannelValue.msgList
				triggerID := msgChannelValue.triggerID
				userID := msgChannelValue.userID
				lastSeq := msgChannelValue.lastSeq
				err := db.DB.BatchInsertChat2DB(userID, msgList, triggerID, lastSeq)
				if err != nil {
					log.NewError(triggerID, "single data insert to mongo err", err.Error(), msgList)
				}
			}
		}
	}
}

//func (och *OnlineHistoryConsumerHandler) handleChatWs2Mongo(cMsg *sarama.ConsumerMessage, msgKey string, sess sarama.ConsumerGroupSession) {
//	msg := cMsg.Value
//	now := time.Now()
//	msgFromMQ := pbMsg.MsgDataToMQ{}
//	err := proto.Unmarshal(msg, &msgFromMQ)
//	if err != nil {
//		log.Error("msg_transfer Unmarshal msg err", "", "msg", string(msg), "err", err.Error())
//		return
//	}
//	operationID := msgFromMQ.OperationID
//	log.NewInfo(operationID, "msg come mongo!!!", "", "msg", string(msg))
//	//Control whether to store offline messages (mongo)
//	isHistory := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsHistory)
//	//Control whether to store history messages (mysql)
//	isPersist := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsPersistent)
//	isSenderSync := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsSenderSync)
//	switch msgFromMQ.MsgData.SessionType {
//	case constant.SingleChatType:
//		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = SingleChatType", isHistory, isPersist)
//		if isHistory {
//			err := saveUserChat(msgKey, &msgFromMQ)
//			if err != nil {
//				singleMsgFailedCount++
//				log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
//				return
//			}
//			singleMsgSuccessCountMutex.Lock()
//			singleMsgSuccessCount++
//			singleMsgSuccessCountMutex.Unlock()
//			log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
//		}
//		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
//		} else {
//			go sendMessageToPush(&msgFromMQ, msgKey)
//		}
//		log.NewDebug(operationID, "saveUserChat cost time ", time.Since(now))
//	case constant.GroupChatType:
//		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = GroupChatType", isHistory, isPersist)
//		if isHistory {
//			err := saveUserChat(msgFromMQ.MsgData.RecvID, &msgFromMQ)
//			if err != nil {
//				log.NewError(operationID, "group data insert to mongo err", msgFromMQ.String(), msgFromMQ.MsgData.RecvID, err.Error())
//				return
//			}
//			groupMsgCount++
//		}
//		go sendMessageToPush(&msgFromMQ, msgFromMQ.MsgData.RecvID)
//	case constant.NotificationChatType:
//		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = NotificationChatType", isHistory, isPersist)
//		if isHistory {
//			err := saveUserChat(msgKey, &msgFromMQ)
//			if err != nil {
//				log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
//				return
//			}
//			log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
//		}
//		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
//		} else {
//			go sendMessageToPush(&msgFromMQ, msgKey)
//		}
//		log.NewDebug(operationID, "saveUserChat cost time ", time.Since(now))
//	default:
//		log.NewError(msgFromMQ.OperationID, "SessionType error", msgFromMQ.String())
//		return
//	}
//	sess.MarkMessage(cMsg, "")
//	log.NewDebug(msgFromMQ.OperationID, "msg_transfer handle topic data to database success...", msgFromMQ.String())
//}
func (och *OnlineHistoryConsumerHandler) MessagesDistributionHandle() {
	for {
		UserAggregationMsgs := make(map[string][]*pbMsg.MsgDataToMQ, ChannelNum)
		select {
		case cmd := <-och.msgDistributionCh:
			switch cmd.Cmd {
			case ConsumerMsgs:
				triggerChannelValue := cmd.Value.(TriggerChannelValue)
				triggerID := triggerChannelValue.triggerID
				consumerMessages := triggerChannelValue.cmsgList
				//Aggregation map[userid]message list
				log.Debug(triggerID, "batch messages come to distribution center", len(consumerMessages))
				for i := 0; i < len(consumerMessages); i++ {
					msgFromMQ := pbMsg.MsgDataToMQ{}
					err := proto.Unmarshal(consumerMessages[i].Value, &msgFromMQ)
					if err != nil {
						log.Error(triggerID, "msg_transfer Unmarshal msg err", "msg", string(consumerMessages[i].Value), "err", err.Error())
						return
					}
					log.Debug(triggerID, "single msg come to distribution center", msgFromMQ.String(), string(consumerMessages[i].Key))
					if oldM, ok := UserAggregationMsgs[string(consumerMessages[i].Key)]; ok {
						oldM = append(oldM, &msgFromMQ)
						UserAggregationMsgs[string(consumerMessages[i].Key)] = oldM
					} else {
						m := make([]*pbMsg.MsgDataToMQ, 0, 100)
						m = append(m, &msgFromMQ)
						UserAggregationMsgs[string(consumerMessages[i].Key)] = m
					}
				}
				log.Debug(triggerID, "generate map list users len", len(UserAggregationMsgs))
				for userID, v := range UserAggregationMsgs {
					if len(v) >= 0 {
						hashCode := getHashCode(userID)
						channelID := hashCode % ChannelNum
						log.Debug(triggerID, "generate channelID", hashCode, channelID, userID)
						//go func(cID uint32, userID string, messages []*pbMsg.MsgDataToMQ) {
						och.chArrays[channelID] <- Cmd2Value{Cmd: UserMessages, Value: MsgChannelValue{userID: userID, msgList: v, triggerID: triggerID}}
						//}(channelID, userID, v)
					}
				}
			}
		}

	}

}
func (mc *OnlineHistoryConsumerHandler) handleChatWs2Mongo(cMsg *sarama.ConsumerMessage, msgKey string, sess sarama.ConsumerGroupSession) {
	msg := cMsg.Value
	now := time.Now()
	msgFromMQ := pbMsg.MsgDataToMQ{}
	err := proto.Unmarshal(msg, &msgFromMQ)
	if err != nil {
		log.Error("msg_transfer Unmarshal msg err", "", "msg", string(msg), "err", err.Error())
		return
	}
	operationID := msgFromMQ.OperationID
	log.NewInfo(operationID, "msg come mongo!!!", "", "msg", string(msg))
	//Control whether to store offline messages (mongo)
	isHistory := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsHistory)
	//Control whether to store history messages (mysql)
	isPersist := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsPersistent)
	isSenderSync := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsSenderSync)
	switch msgFromMQ.MsgData.SessionType {
	case constant.SingleChatType:
		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = SingleChatType", isHistory, isPersist)
		if isHistory {
			err := saveUserChat(msgKey, &msgFromMQ)
			if err != nil {
				singleMsgFailedCount++
				log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
				return
			}
			singleMsgSuccessCountMutex.Lock()
			singleMsgSuccessCount++
			singleMsgSuccessCountMutex.Unlock()
			log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
		}
		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
		} else {
			go sendMessageToPush(&msgFromMQ, msgKey)
		}
		log.NewDebug(operationID, "saveSingleMsg cost time ", time.Since(now))
	case constant.GroupChatType:
		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = GroupChatType", isHistory, isPersist)
		if isHistory {
			err := saveUserChat(msgFromMQ.MsgData.RecvID, &msgFromMQ)
			if err != nil {
				log.NewError(operationID, "group data insert to mongo err", msgFromMQ.String(), msgFromMQ.MsgData.RecvID, err.Error())
				return
			}
			groupMsgCount++
		}
		go sendMessageToPush(&msgFromMQ, msgFromMQ.MsgData.RecvID)
		log.NewDebug(operationID, "saveGroupMsg cost time ", time.Since(now))

	case constant.NotificationChatType:
		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = NotificationChatType", isHistory, isPersist)
		if isHistory {
			err := saveUserChat(msgKey, &msgFromMQ)
			if err != nil {
				log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
				return
			}
			log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
		}
		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
		} else {
			go sendMessageToPush(&msgFromMQ, msgKey)
		}
		log.NewDebug(operationID, "saveUserChat cost time ", time.Since(now))
	default:
		log.NewError(msgFromMQ.OperationID, "SessionType error", msgFromMQ.String())
		return
	}
	sess.MarkMessage(cMsg, "")
	log.NewDebug(msgFromMQ.OperationID, "msg_transfer handle topic data to database success...", msgFromMQ.String())
}

func (och *OnlineHistoryConsumerHandler) handleChatWs2MongoLowReliability(cMsg *sarama.ConsumerMessage, msgKey string, sess sarama.ConsumerGroupSession) {
	msg := cMsg.Value
	msgFromMQ := pbMsg.MsgDataToMQ{}
	err := proto.Unmarshal(msg, &msgFromMQ)
	if err != nil {
		log.Error("msg_transfer Unmarshal msg err", "", "msg", string(msg), "err", err.Error())
		return
	}
	operationID := msgFromMQ.OperationID
	log.NewInfo(operationID, "msg come mongo!!!", "", "msg", string(msg))
	//Control whether to store offline messages (mongo)
	isHistory := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsHistory)
	isSenderSync := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsSenderSync)
	if isHistory {
		seq, err := db.DB.IncrUserSeq(msgKey)
		if err != nil {
			log.NewError(operationID, "data insert to redis err", err.Error(), string(msg))
			return
		}
		sess.MarkMessage(cMsg, "")
		msgFromMQ.MsgData.Seq = uint32(seq)
		log.Debug(operationID, "send ch msg is ", msgFromMQ.String())
		//och.msgCh <- Cmd2Value{Cmd: Msg, Value: MsgChannelValue{msgKey, msgFromMQ}}
		//err := saveUserChat(msgKey, &msgFromMQ)
		//if err != nil {
		//	singleMsgFailedCount++
		//	log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
		//	return
		//}
		//singleMsgSuccessCountMutex.Lock()
		//singleMsgSuccessCount++
		//singleMsgSuccessCountMutex.Unlock()
		//log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
	} else {
		if !(!isSenderSync && msgKey == msgFromMQ.MsgData.SendID) {
			go sendMessageToPush(&msgFromMQ, msgKey)
		}
	}
}

func (OnlineHistoryConsumerHandler) Setup(_ sarama.ConsumerGroupSession) error   { return nil }
func (OnlineHistoryConsumerHandler) Cleanup(_ sarama.ConsumerGroupSession) error { return nil }

//func (och *OnlineHistoryConsumerHandler) ConsumeClaim(sess sarama.ConsumerGroupSession,
//	claim sarama.ConsumerGroupClaim) error { // a instance in the consumer group
//	log.NewDebug("", "online new session msg come", claim.HighWaterMarkOffset(), claim.Topic(), claim.Partition())
//	for msg := range claim.Messages() {
//		SetOnlineTopicStatus(OnlineTopicBusy)
//		//och.TriggerCmd(OnlineTopicBusy)
//		log.NewDebug("", "online kafka get info to mongo", "msgTopic", msg.Topic, "msgPartition", msg.Partition, "online", msg.Offset, claim.HighWaterMarkOffset())
//		och.msgHandle[msg.Topic](msg, string(msg.Key), sess)
//		if claim.HighWaterMarkOffset()-msg.Offset <= 1 {
//			log.Debug("", "online msg consume end", claim.HighWaterMarkOffset(), msg.Offset)
//			SetOnlineTopicStatus(OnlineTopicVacancy)
//			och.TriggerCmd(OnlineTopicVacancy)
//		}
//	}
//	return nil
//}

func (och *OnlineHistoryConsumerHandler) ConsumeClaim(sess sarama.ConsumerGroupSession,
	claim sarama.ConsumerGroupClaim) error { // a instance in the consumer group

	for {
		if sess == nil {
			log.NewWarn("", " sess == nil, waiting ")
			time.Sleep(100 * time.Millisecond)
		} else {
			break
		}
	}

	log.NewDebug("", "online new session msg come", claim.HighWaterMarkOffset(), claim.Topic(), claim.Partition())
	cMsg := make([]*sarama.ConsumerMessage, 0, 1000)
	t := time.NewTicker(time.Duration(100) * time.Millisecond)
	var triggerID string
	for {
		//och.TriggerCmd(OnlineTopicBusy)
		select {
		case msg := <-claim.Messages():
			triggerID = utils.OperationIDGenerator()

			log.NewDebug(triggerID, "claim.Messages ", msg)
			cMsg = append(cMsg, msg)
			if len(cMsg) >= 1000 {
				ccMsg := make([]*sarama.ConsumerMessage, 0, 1000)
				for _, v := range cMsg {
					ccMsg = append(ccMsg, v)
				}
				log.Debug(triggerID, "length trigger msg consumer start", len(ccMsg))
				och.msgDistributionCh <- Cmd2Value{Cmd: ConsumerMsgs, Value: TriggerChannelValue{
					triggerID: triggerID, cmsgList: ccMsg}}
				sess.MarkMessage(msg, "")
				cMsg = make([]*sarama.ConsumerMessage, 0, 1000)
				log.Debug(triggerID, "length trigger msg consumer end", len(cMsg))
			}

		case <-t.C:
			if len(cMsg) > 0 {
				ccMsg := make([]*sarama.ConsumerMessage, 0, 1000)
				for _, v := range cMsg {
					ccMsg = append(ccMsg, v)
				}
				triggerID = utils.OperationIDGenerator()
				log.Debug(triggerID, "timer trigger msg consumer start", len(ccMsg))
				och.msgDistributionCh <- Cmd2Value{Cmd: ConsumerMsgs, Value: TriggerChannelValue{
					triggerID: triggerID, cmsgList: ccMsg}}
				sess.MarkMessage(cMsg[len(cMsg)-1], "")
				cMsg = make([]*sarama.ConsumerMessage, 0, 1000)
				log.Debug(triggerID, "timer trigger msg consumer end", len(cMsg))
			}

		}
		//log.NewDebug("", "online kafka get info to mongo", "msgTopic", msg.Topic, "msgPartition", msg.Partition, "online", msg.Offset, claim.HighWaterMarkOffset())

	}
	return nil
}
func sendMessageToPush(message *pbMsg.MsgDataToMQ, pushToUserID string) {
	log.Info(message.OperationID, "msg_transfer send message to push", "message", message.String())
	rpcPushMsg := pbPush.PushMsgReq{OperationID: message.OperationID, MsgData: message.MsgData, PushToUserID: pushToUserID}
	mqPushMsg := pbMsg.PushMsgDataToMQ{OperationID: message.OperationID, MsgData: message.MsgData, PushToUserID: pushToUserID}
	grpcConn := getcdv3.GetConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","), config.Config.RpcRegisterName.OpenImPushName)
	if grpcConn == nil {
		log.Error(rpcPushMsg.OperationID, "rpc dial failed", "push data", rpcPushMsg.String())
		pid, offset, err := producer.SendMessage(&mqPushMsg)
		if err != nil {
			log.Error(mqPushMsg.OperationID, "kafka send failed", "send data", message.String(), "pid", pid, "offset", offset, "err", err.Error())
		}
		return
	}
	msgClient := pbPush.NewPushMsgServiceClient(grpcConn)
	_, err := msgClient.PushMsg(context.Background(), &rpcPushMsg)
	if err != nil {
		log.Error(rpcPushMsg.OperationID, "rpc send failed", rpcPushMsg.OperationID, "push data", rpcPushMsg.String(), "err", err.Error())
		pid, offset, err := producer.SendMessage(&mqPushMsg)
		if err != nil {
			log.Error(message.OperationID, "kafka send failed", mqPushMsg.OperationID, "send data", mqPushMsg.String(), "pid", pid, "offset", offset, "err", err.Error())
		}
	} else {
		log.Info(message.OperationID, "rpc send success", rpcPushMsg.OperationID, "push data", rpcPushMsg.String())

	}
}

// String hashes a string to a unique hashcode.
//
// crc32 returns a uint32, but for our use we need
// and non negative integer. Here we cast to an integer
// and invert it if the result is negative.
func getHashCode(s string) uint32 {
	return crc32.ChecksumIEEE([]byte(s))
}