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client.go
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client.go
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/*
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You 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 internal
import (
"context"
"errors"
"fmt"
"net"
"os"
"strconv"
"strings"
"sync"
"time"
"github.com/apache/rocketmq-client-go/v2/internal/remote"
"github.com/apache/rocketmq-client-go/v2/internal/utils"
"github.com/apache/rocketmq-client-go/v2/primitive"
"github.com/apache/rocketmq-client-go/v2/rlog"
)
const (
clientVersion = "v2.0.0"
defaultTraceRegionID = "DefaultRegion"
// tracing message switch
_TranceOff = "false"
// Pulling topic information interval from the named server
_PullNameServerInterval = 30 * time.Second
// Sending heart beat interval to all broker
_HeartbeatBrokerInterval = 30 * time.Second
// Offset persistent interval for consumer
_PersistOffsetInterval = 5 * time.Second
// Rebalance interval
_RebalanceInterval = 20 * time.Second
)
var (
ErrServiceState = errors.New("service close is not running, please check")
_VIPChannelEnable = false
)
func init() {
if os.Getenv("com.rocketmq.sendMessageWithVIPChannel") != "" {
value, err := strconv.ParseBool(os.Getenv("com.rocketmq.sendMessageWithVIPChannel"))
if err == nil {
_VIPChannelEnable = value
}
}
}
type InnerProducer interface {
PublishTopicList() []string
UpdateTopicPublishInfo(topic string, info *TopicPublishInfo)
IsPublishTopicNeedUpdate(topic string) bool
IsUnitMode() bool
}
type InnerConsumer interface {
PersistConsumerOffset() error
UpdateTopicSubscribeInfo(topic string, mqs []*primitive.MessageQueue)
IsSubscribeTopicNeedUpdate(topic string) bool
SubscriptionDataList() []*SubscriptionData
Rebalance()
IsUnitMode() bool
GetConsumerRunningInfo() *ConsumerRunningInfo
GetcType() string
GetModel() string
GetWhere() string
}
func DefaultClientOptions() ClientOptions {
opts := ClientOptions{
InstanceName: "DEFAULT",
RetryTimes: 3,
ClientIP: utils.LocalIP,
}
return opts
}
type ClientOptions struct {
GroupName string
NameServerAddrs primitive.NamesrvAddr
Namesrv *namesrvs
ClientIP string
InstanceName string
UnitMode bool
UnitName string
VIPChannelEnabled bool
RetryTimes int
Interceptors []primitive.Interceptor
Credentials primitive.Credentials
Namespace string
Resolver primitive.NsResolver
}
func (opt *ClientOptions) ChangeInstanceNameToPID() {
if opt.InstanceName == "DEFAULT" {
opt.InstanceName = strconv.Itoa(os.Getpid())
}
}
func (opt *ClientOptions) String() string {
return fmt.Sprintf("ClientOption [ClientIP=%s, InstanceName=%s, "+
"UnitMode=%v, UnitName=%s, VIPChannelEnabled=%v]", opt.ClientIP,
opt.InstanceName, opt.UnitMode, opt.UnitName, opt.VIPChannelEnabled)
}
//go:generate mockgen -source client.go -destination mock_client.go -self_package github.com/apache/rocketmq-client-go/v2/internal --package internal RMQClient
type RMQClient interface {
Start()
Shutdown()
ClientID() string
RegisterProducer(group string, producer InnerProducer)
UnregisterProducer(group string)
InvokeSync(ctx context.Context, addr string, request *remote.RemotingCommand,
timeoutMillis time.Duration) (*remote.RemotingCommand, error)
InvokeAsync(ctx context.Context, addr string, request *remote.RemotingCommand,
f func(*remote.RemotingCommand, error)) error
InvokeOneWay(ctx context.Context, addr string, request *remote.RemotingCommand,
timeoutMillis time.Duration) error
CheckClientInBroker()
SendHeartbeatToAllBrokerWithLock()
UpdateTopicRouteInfo()
ProcessSendResponse(brokerName string, cmd *remote.RemotingCommand, resp *primitive.SendResult, msgs ...*primitive.Message) error
RegisterConsumer(group string, consumer InnerConsumer) error
UnregisterConsumer(group string)
PullMessage(ctx context.Context, brokerAddrs string, request *PullMessageRequestHeader) (*primitive.PullResult, error)
RebalanceImmediately()
UpdatePublishInfo(topic string, data *TopicRouteData, changed bool)
}
var _ RMQClient = new(rmqClient)
type rmqClient struct {
option ClientOptions
// group -> InnerProducer
producerMap sync.Map
// group -> InnerConsumer
consumerMap sync.Map
once sync.Once
remoteClient remote.RemotingClient
hbMutex sync.Mutex
close bool
rbMutex sync.Mutex
namesrvs *namesrvs
done chan struct{}
shutdownOnce sync.Once
}
var clientMap sync.Map
func GetOrNewRocketMQClient(option ClientOptions, callbackCh chan interface{}) RMQClient {
client := &rmqClient{
option: option,
remoteClient: remote.NewRemotingClient(),
namesrvs: option.Namesrv,
done: make(chan struct{}),
}
actual, loaded := clientMap.LoadOrStore(client.ClientID(), client)
if !loaded {
client.remoteClient.RegisterRequestFunc(ReqNotifyConsumerIdsChanged, func(req *remote.RemotingCommand, addr net.Addr) *remote.RemotingCommand {
rlog.Info("receive broker's notification to consumer group", map[string]interface{}{
rlog.LogKeyConsumerGroup: req.ExtFields["consumerGroup"],
})
client.RebalanceImmediately()
return nil
})
client.remoteClient.RegisterRequestFunc(ReqCheckTransactionState, func(req *remote.RemotingCommand, addr net.Addr) *remote.RemotingCommand {
header := new(CheckTransactionStateRequestHeader)
header.Decode(req.ExtFields)
msgExts := primitive.DecodeMessage(req.Body)
if len(msgExts) == 0 {
rlog.Warning("checkTransactionState, decode message failed", nil)
return nil
}
msgExt := msgExts[0]
// TODO: add namespace support
transactionID := msgExt.GetProperty(primitive.PropertyUniqueClientMessageIdKeyIndex)
if len(transactionID) > 0 {
msgExt.TransactionId = transactionID
}
group := msgExt.GetProperty(primitive.PropertyProducerGroup)
if group == "" {
rlog.Warning("checkTransactionState, pick producer group failed", nil)
return nil
}
if option.GroupName != group {
rlog.Warning("producer group is not equal", nil)
return nil
}
callback := &CheckTransactionStateCallback{
Addr: addr,
Msg: msgExt,
Header: *header,
}
callbackCh <- callback
return nil
})
client.remoteClient.RegisterRequestFunc(ReqGetConsumerRunningInfo, func(req *remote.RemotingCommand, addr net.Addr) *remote.RemotingCommand {
rlog.Info("receive get consumer running info request...", nil)
header := new(GetConsumerRunningInfoHeader)
header.Decode(req.ExtFields)
val, exist := clientMap.Load(header.clientID)
res := remote.NewRemotingCommand(ResError, nil, nil)
if !exist {
res.Remark = fmt.Sprintf("Can't find specified client instance of: %s", header.clientID)
} else {
cli, ok := val.(*rmqClient)
var runningInfo *ConsumerRunningInfo
if ok {
runningInfo = cli.getConsumerRunningInfo(header.consumerGroup)
}
if runningInfo != nil {
res.Code = ResSuccess
data, err := runningInfo.Encode()
if err != nil {
res.Remark = fmt.Sprintf("json marshal error: %s", err.Error())
} else {
res.Body = data
}
} else {
res.Remark = "there is unexpected error when get running info, please check log"
}
}
return res
})
}
return actual.(*rmqClient)
}
func (c *rmqClient) Start() {
//ctx, cancel := context.WithCancel(context.Background())
//c.cancel = cancel
c.once.Do(func() {
if !c.option.Credentials.IsEmpty() {
c.remoteClient.RegisterInterceptor(remote.ACLInterceptor(c.option.Credentials))
}
go primitive.WithRecover(func() {
op := func() {
c.namesrvs.UpdateNameServerAddress()
}
time.Sleep(10 * time.Second)
op()
ticker := time.NewTicker(2 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
op()
case <-c.done:
rlog.Info("The RMQClient stopping update name server domain info.", map[string]interface{}{
"clientID": c.ClientID(),
})
return
}
}
})
// schedule update route info
go primitive.WithRecover(func() {
// delay
op := func() {
c.UpdateTopicRouteInfo()
}
time.Sleep(10 * time.Millisecond)
op()
ticker := time.NewTicker(_PullNameServerInterval)
defer ticker.Stop()
for {
select {
case <-ticker.C:
op()
case <-c.done:
rlog.Info("The RMQClient stopping update topic route info.", map[string]interface{}{
"clientID": c.ClientID(),
})
return
}
}
})
go primitive.WithRecover(func() {
op := func() {
c.namesrvs.cleanOfflineBroker()
c.SendHeartbeatToAllBrokerWithLock()
}
time.Sleep(time.Second)
op()
ticker := time.NewTicker(_HeartbeatBrokerInterval)
defer ticker.Stop()
for {
select {
case <-ticker.C:
op()
case <-c.done:
rlog.Info("The RMQClient stopping clean off line broker and heart beat", map[string]interface{}{
"clientID": c.ClientID(),
})
return
}
}
})
// schedule persist offset
go primitive.WithRecover(func() {
op := func() {
c.consumerMap.Range(func(key, value interface{}) bool {
consumer := value.(InnerConsumer)
err := consumer.PersistConsumerOffset()
if err != nil {
rlog.Error("persist offset failed", map[string]interface{}{
rlog.LogKeyUnderlayError: err,
})
}
return true
})
}
time.Sleep(10 * time.Second)
op()
ticker := time.NewTicker(_PersistOffsetInterval)
defer ticker.Stop()
for {
select {
case <-ticker.C:
op()
case <-c.done:
rlog.Info("The RMQClient stopping persist offset", map[string]interface{}{
"clientID": c.ClientID(),
})
return
}
}
})
go primitive.WithRecover(func() {
ticker := time.NewTicker(_RebalanceInterval)
defer ticker.Stop()
for {
select {
case <-ticker.C:
c.RebalanceImmediately()
case <-c.done:
rlog.Info("The RMQClient stopping do rebalance", map[string]interface{}{
"clientID": c.ClientID(),
})
return
}
}
})
})
}
func (c *rmqClient) Shutdown() {
c.shutdownOnce.Do(func() {
close(c.done)
c.close = true
c.remoteClient.ShutDown()
})
}
func (c *rmqClient) ClientID() string {
id := c.option.ClientIP + "@"
if c.option.InstanceName == "DEFAULT" {
id += strconv.Itoa(os.Getpid())
} else {
id += c.option.InstanceName
}
if c.option.UnitName != "" {
id += "@" + c.option.UnitName
}
return id
}
func (c *rmqClient) InvokeSync(ctx context.Context, addr string, request *remote.RemotingCommand,
timeoutMillis time.Duration) (*remote.RemotingCommand, error) {
if c.close {
return nil, ErrServiceState
}
ctx, _ = context.WithTimeout(ctx, timeoutMillis)
return c.remoteClient.InvokeSync(ctx, addr, request)
}
func (c *rmqClient) InvokeAsync(ctx context.Context, addr string, request *remote.RemotingCommand,
f func(*remote.RemotingCommand, error)) error {
if c.close {
return ErrServiceState
}
return c.remoteClient.InvokeAsync(ctx, addr, request, func(future *remote.ResponseFuture) {
f(future.ResponseCommand, future.Err)
})
}
func (c *rmqClient) InvokeOneWay(ctx context.Context, addr string, request *remote.RemotingCommand,
timeoutMillis time.Duration) error {
if c.close {
return ErrServiceState
}
return c.remoteClient.InvokeOneWay(ctx, addr, request)
}
func (c *rmqClient) CheckClientInBroker() {
}
// TODO
func (c *rmqClient) SendHeartbeatToAllBrokerWithLock() {
c.hbMutex.Lock()
defer c.hbMutex.Unlock()
hbData := NewHeartbeatData(c.ClientID())
c.producerMap.Range(func(key, value interface{}) bool {
pData := producerData{
GroupName: key.(string),
}
hbData.ProducerDatas.Add(pData)
return true
})
c.consumerMap.Range(func(key, value interface{}) bool {
consumer := value.(InnerConsumer)
cData := consumerData{
GroupName: key.(string),
CType: consumeType(consumer.GetcType()),
MessageModel: strings.ToUpper(consumer.GetModel()),
Where: consumer.GetWhere(),
UnitMode: consumer.IsUnitMode(),
SubscriptionDatas: consumer.SubscriptionDataList(),
}
hbData.ConsumerDatas.Add(cData)
return true
})
if hbData.ProducerDatas.Len() == 0 && hbData.ConsumerDatas.Len() == 0 {
rlog.Info("sending heartbeat, but no producer and no consumer", nil)
return
}
c.namesrvs.brokerAddressesMap.Range(func(key, value interface{}) bool {
brokerName := key.(string)
data := value.(*BrokerData)
for id, addr := range data.BrokerAddresses {
rlog.Debug("try to send heart beat to broker", map[string]interface{}{
"brokerName": brokerName,
"brokerId": id,
"brokerAddr": addr,
})
if hbData.ConsumerDatas.Len() == 0 && id != 0 {
rlog.Debug("notice, will not send heart beat to broker", map[string]interface{}{
"brokerName": brokerName,
"brokerId": id,
"brokerAddr": addr,
})
continue
}
cmd := remote.NewRemotingCommand(ReqHeartBeat, nil, hbData.encode())
ctx, _ := context.WithTimeout(context.Background(), 3*time.Second)
response, err := c.remoteClient.InvokeSync(ctx, addr, cmd)
if err != nil {
rlog.Warning("send heart beat to broker error", map[string]interface{}{
rlog.LogKeyUnderlayError: err,
})
return true
}
if response.Code == ResSuccess {
c.namesrvs.AddBrokerVersion(brokerName, addr, int32(response.Version))
rlog.Debug("send heart beat to broker success", map[string]interface{}{
"brokerName": brokerName,
"brokerId": id,
"brokerAddr": addr,
})
} else {
rlog.Warning("send heart beat to broker failed", map[string]interface{}{
"brokerName": brokerName,
"brokerId": id,
"brokerAddr": addr,
"responseCode": response.Code,
})
}
}
return true
})
}
func (c *rmqClient) UpdateTopicRouteInfo() {
publishTopicSet := make(map[string]bool, 0)
c.producerMap.Range(func(key, value interface{}) bool {
producer := value.(InnerProducer)
list := producer.PublishTopicList()
for idx := range list {
publishTopicSet[list[idx]] = true
}
return true
})
for topic := range publishTopicSet {
data, changed, _ := c.namesrvs.UpdateTopicRouteInfo(topic)
c.UpdatePublishInfo(topic, data, changed)
}
subscribedTopicSet := make(map[string]bool, 0)
c.consumerMap.Range(func(key, value interface{}) bool {
consumer := value.(InnerConsumer)
list := consumer.SubscriptionDataList()
for idx := range list {
subscribedTopicSet[list[idx].Topic] = true
}
return true
})
for topic := range subscribedTopicSet {
data, changed, _ := c.namesrvs.UpdateTopicRouteInfo(topic)
c.updateSubscribeInfo(topic, data, changed)
}
}
func (c *rmqClient) ProcessSendResponse(brokerName string, cmd *remote.RemotingCommand, resp *primitive.SendResult, msgs ...*primitive.Message) error {
var status primitive.SendStatus
switch cmd.Code {
case ResFlushDiskTimeout:
status = primitive.SendFlushDiskTimeout
case ResFlushSlaveTimeout:
status = primitive.SendFlushSlaveTimeout
case ResSlaveNotAvailable:
status = primitive.SendSlaveNotAvailable
case ResSuccess:
status = primitive.SendOK
default:
status = primitive.SendUnknownError
return errors.New(cmd.Remark)
}
msgIDs := make([]string, 0)
for i := 0; i < len(msgs); i++ {
msgIDs = append(msgIDs, msgs[i].GetProperty(primitive.PropertyUniqueClientMessageIdKeyIndex))
}
uniqueMsgId := strings.Join(msgIDs, ",")
regionId := cmd.ExtFields[primitive.PropertyMsgRegion]
trace := cmd.ExtFields[primitive.PropertyTraceSwitch]
if regionId == "" {
regionId = defaultTraceRegionID
}
qId, _ := strconv.Atoi(cmd.ExtFields["queueId"])
off, _ := strconv.ParseInt(cmd.ExtFields["queueOffset"], 10, 64)
resp.Status = status
resp.MsgID = uniqueMsgId
resp.OffsetMsgID = cmd.ExtFields["msgId"]
resp.MessageQueue = &primitive.MessageQueue{
Topic: msgs[0].Topic,
BrokerName: brokerName,
QueueId: qId,
}
resp.QueueOffset = off
resp.TransactionID = cmd.ExtFields["transactionId"]
resp.RegionID = regionId
resp.TraceOn = trace != "" && trace != _TranceOff
return nil
}
// PullMessage with sync
func (c *rmqClient) PullMessage(ctx context.Context, brokerAddrs string, request *PullMessageRequestHeader) (*primitive.PullResult, error) {
cmd := remote.NewRemotingCommand(ReqPullMessage, request, nil)
ctx, _ = context.WithTimeout(ctx, 30*time.Second)
res, err := c.remoteClient.InvokeSync(ctx, brokerAddrs, cmd)
if err != nil {
return nil, err
}
return c.processPullResponse(res)
}
func (c *rmqClient) processPullResponse(response *remote.RemotingCommand) (*primitive.PullResult, error) {
pullResult := &primitive.PullResult{}
switch response.Code {
case ResSuccess:
pullResult.Status = primitive.PullFound
case ResPullNotFound:
pullResult.Status = primitive.PullNoNewMsg
case ResPullRetryImmediately:
pullResult.Status = primitive.PullNoMsgMatched
case ResPullOffsetMoved:
pullResult.Status = primitive.PullOffsetIllegal
default:
return nil, fmt.Errorf("unknown Response Code: %d, remark: %s", response.Code, response.Remark)
}
c.decodeCommandCustomHeader(pullResult, response)
pullResult.SetBody(response.Body)
return pullResult, nil
}
func (c *rmqClient) decodeCommandCustomHeader(pr *primitive.PullResult, cmd *remote.RemotingCommand) {
v, exist := cmd.ExtFields["maxOffset"]
if exist {
pr.MaxOffset, _ = strconv.ParseInt(v, 10, 64)
}
v, exist = cmd.ExtFields["minOffset"]
if exist {
pr.MinOffset, _ = strconv.ParseInt(v, 10, 64)
}
v, exist = cmd.ExtFields["nextBeginOffset"]
if exist {
pr.NextBeginOffset, _ = strconv.ParseInt(v, 10, 64)
}
v, exist = cmd.ExtFields["suggestWhichBrokerId"]
if exist {
pr.SuggestWhichBrokerId, _ = strconv.ParseInt(v, 10, 64)
}
}
func (c *rmqClient) RegisterConsumer(group string, consumer InnerConsumer) error {
_, exist := c.consumerMap.Load(group)
if exist {
rlog.Warning("the consumer group exist already", map[string]interface{}{
rlog.LogKeyConsumerGroup: group,
})
return fmt.Errorf("the consumer group exist already")
}
c.consumerMap.Store(group, consumer)
return nil
}
func (c *rmqClient) UnregisterConsumer(group string) {
c.consumerMap.Delete(group)
}
func (c *rmqClient) RegisterProducer(group string, producer InnerProducer) {
c.producerMap.Store(group, producer)
}
func (c *rmqClient) UnregisterProducer(group string) {
c.producerMap.Delete(group)
}
func (c *rmqClient) RebalanceImmediately() {
c.rbMutex.Lock()
defer c.rbMutex.Unlock()
c.consumerMap.Range(func(key, value interface{}) bool {
consumer := value.(InnerConsumer)
consumer.Rebalance()
return true
})
}
func (c *rmqClient) UpdatePublishInfo(topic string, data *TopicRouteData, changed bool) {
if data == nil {
return
}
c.producerMap.Range(func(key, value interface{}) bool {
p := value.(InnerProducer)
updated := changed
if !updated {
updated = p.IsPublishTopicNeedUpdate(topic)
}
if updated {
publishInfo := c.namesrvs.routeData2PublishInfo(topic, data)
publishInfo.HaveTopicRouterInfo = true
p.UpdateTopicPublishInfo(topic, publishInfo)
}
return true
})
}
func (c *rmqClient) updateSubscribeInfo(topic string, data *TopicRouteData, changed bool) {
if data == nil {
return
}
c.consumerMap.Range(func(key, value interface{}) bool {
consumer := value.(InnerConsumer)
updated := changed
if !updated {
updated = consumer.IsSubscribeTopicNeedUpdate(topic)
}
if updated {
consumer.UpdateTopicSubscribeInfo(topic, routeData2SubscribeInfo(topic, data))
}
return true
})
}
func (c *rmqClient) isNeedUpdateSubscribeInfo(topic string) bool {
var result bool
c.consumerMap.Range(func(key, value interface{}) bool {
consumer := value.(InnerConsumer)
if consumer.IsSubscribeTopicNeedUpdate(topic) {
result = true
return false
}
return true
})
return result
}
func (c *rmqClient) getConsumerRunningInfo(group string) *ConsumerRunningInfo {
consumer, exist := c.consumerMap.Load(group)
if !exist {
return nil
}
info := consumer.(InnerConsumer).GetConsumerRunningInfo()
if info != nil {
info.Properties[PropClientVersion] = clientVersion
}
return info
}
func routeData2SubscribeInfo(topic string, data *TopicRouteData) []*primitive.MessageQueue {
list := make([]*primitive.MessageQueue, 0)
for idx := range data.QueueDataList {
qd := data.QueueDataList[idx]
if queueIsReadable(qd.Perm) {
for i := 0; i < qd.ReadQueueNums; i++ {
list = append(list, &primitive.MessageQueue{
Topic: topic,
BrokerName: qd.BrokerName,
QueueId: i,
})
}
}
}
return list
}
func brokerVIPChannel(brokerAddr string) string {
if !_VIPChannelEnable {
return brokerAddr
}
var brokerAddrNew strings.Builder
ipAndPort := strings.Split(brokerAddr, ":")
port, err := strconv.Atoi(ipAndPort[1])
if err != nil {
return ""
}
brokerAddrNew.WriteString(ipAndPort[0])
brokerAddrNew.WriteString(":")
brokerAddrNew.WriteString(strconv.Itoa(port - 2))
return brokerAddrNew.String()
}