func getTopicChan(command string, params []string) (string, string, string, error) {
if len(params) <= 1 {
return "", "", "", protocol.NewFatalClientErr(nil, "E_INVALID", fmt.Sprintf("%s insufficient number of params", command))
}
topicName := params[0]
partitionID := params[1]
var channelName string
if len(params) >= 3 {
channelName = params[2]
}
if !protocol.IsValidTopicName(topicName) {
return "", "", "", protocol.NewFatalClientErr(nil, "E_BAD_TOPIC", fmt.Sprintf("%s topic name '%s' is not valid", command, topicName))
}
if channelName != "" && !protocol.IsValidChannelName(channelName) {
return "", "", "", protocol.NewFatalClientErr(nil, "E_BAD_CHANNEL", fmt.Sprintf("%s channel name '%s' is not valid", command, channelName))
}
if _, err := GetValidPartitionID(partitionID); err != nil {
return "", "", "", protocol.NewFatalClientErr(nil, "E_BAD_PARTITIONID", fmt.Sprintf("%s partition id '%s' is not valid", command, partitionID))
}
return topicName, channelName, partitionID, nil
}
func (s *httpServer) tombstoneNodeForTopicHandler(w http.ResponseWriter, req *http.Request, ps httprouter.Params) (interface{}, error) {
var messages []string
node := ps.ByName("node")
var body struct {
Topic string `json:"topic"`
}
err := json.NewDecoder(req.Body).Decode(&body)
if err != nil {
return nil, http_api.Err{400, "INVALID_BODY"}
}
if !protocol.IsValidTopicName(body.Topic) {
return nil, http_api.Err{400, "INVALID_TOPIC"}
}
err = s.ci.TombstoneNodeForTopic(body.Topic, node,
s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
if err != nil {
pe, ok := err.(clusterinfo.PartialErr)
if !ok {
s.ctx.nsqadmin.logf("ERROR: failed to tombstone node for topic - %s", err)
return nil, http_api.Err{502, fmt.Sprintf("UPSTREAM_ERROR: %s", err)}
}
s.ctx.nsqadmin.logf("WARNING: %s", err)
messages = append(messages, pe.Error())
}
s.notifyAdminAction("tombstone_topic_producer", body.Topic, "", node, req)
return struct {
Message string `json:"message"`
}{maybeWarnMsg(messages)}, nil
}
func (self *NsqLookupCoordinator) CreateTopic(topic string, meta TopicMetaInfo) error {
if self.leaderNode.GetID() != self.myNode.GetID() {
coordLog.Infof("not leader while create topic")
return ErrNotNsqLookupLeader
}
if !protocol.IsValidTopicName(topic) {
return errors.New("invalid topic name")
}
// TODO: handle default load factor
if meta.PartitionNum >= MAX_PARTITION_NUM {
return errors.New("max partition allowed exceed")
}
currentNodes := self.getCurrentNodes()
if len(currentNodes) < meta.Replica || len(currentNodes) < meta.PartitionNum {
coordLog.Infof("nodes %v is less than replica or partition %v", len(currentNodes), meta)
return ErrNodeUnavailable.ToErrorType()
}
if len(currentNodes) < meta.Replica*meta.PartitionNum {
coordLog.Infof("nodes is less than replica*partition")
return ErrNodeUnavailable.ToErrorType()
}
self.joinStateMutex.Lock()
state, ok := self.joinISRState[topic]
if !ok {
state = &JoinISRState{}
self.joinISRState[topic] = state
}
self.joinStateMutex.Unlock()
state.Lock()
defer state.Unlock()
if state.waitingJoin {
coordLog.Warningf("topic state is not ready:%v, %v ", topic, state)
return ErrWaitingJoinISR.ToErrorType()
}
if meta.SyncEvery > MAX_SYNC_EVERY {
coordLog.Infof("topic %v sync every with too large %v, set to max", topic, meta)
meta.SyncEvery = MAX_SYNC_EVERY
}
if ok, _ := self.leadership.IsExistTopic(topic); !ok {
meta.MagicCode = time.Now().UnixNano()
err := self.leadership.CreateTopic(topic, &meta)
if err != nil {
coordLog.Infof("create topic key %v failed :%v", topic, err)
return err
}
} else {
coordLog.Warningf("topic already exist :%v ", topic)
return ErrAlreadyExist
}
coordLog.Infof("create topic: %v, with meta: %v", topic, meta)
return self.checkAndUpdateTopicPartitions(currentNodes, topic, meta)
}
func (s *httpServer) createTopicChannelHandler(w http.ResponseWriter, req *http.Request, ps httprouter.Params) (interface{}, error) {
var messages []string
var body struct {
Topic string `json:"topic"`
PartitionNum string `json:"partition_num"`
Replicator string `json:"replicator"`
RetentionDays string `json:"retention_days"`
SyncDisk string `json:"syncdisk"`
}
err := json.NewDecoder(req.Body).Decode(&body)
if err != nil {
return nil, http_api.Err{400, err.Error()}
}
if !protocol.IsValidTopicName(body.Topic) {
return nil, http_api.Err{400, "INVALID_TOPIC"}
}
if body.PartitionNum == "" {
return nil, http_api.Err{400, "INVALID_TOPIC_PARTITION_NUM"}
}
pnum, err := strconv.Atoi(body.PartitionNum)
if err != nil {
return nil, http_api.Err{400, err.Error()}
}
if body.Replicator == "" {
return nil, http_api.Err{400, "INVALID_TOPIC_REPLICATOR"}
}
replica, err := strconv.Atoi(body.Replicator)
if err != nil {
return nil, http_api.Err{400, err.Error()}
}
if body.SyncDisk == "" {
body.SyncDisk = "2000"
}
syncDisk, _ := strconv.Atoi(body.SyncDisk)
err = s.ci.CreateTopic(body.Topic, pnum, replica,
syncDisk, body.RetentionDays,
s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
if err != nil {
pe, ok := err.(clusterinfo.PartialErr)
if !ok {
s.ctx.nsqadmin.logf("ERROR: failed to create topic/channel - %s", err)
return nil, http_api.Err{502, fmt.Sprintf("UPSTREAM_ERROR: %s", err)}
}
s.ctx.nsqadmin.logf("WARNING: %s", err)
messages = append(messages, pe.Error())
}
s.notifyAdminAction("create_topic", body.Topic, "", "", req)
return struct {
Message string `json:"message"`
}{maybeWarnMsg(messages)}, nil
}
func (self *NsqLookupCoordinator) ExpandTopicPartition(topic string, newPartitionNum int) error {
if self.leaderNode.GetID() != self.myNode.GetID() {
coordLog.Infof("not leader while create topic")
return ErrNotNsqLookupLeader
}
if !protocol.IsValidTopicName(topic) {
return errors.New("invalid topic name")
}
if newPartitionNum >= MAX_PARTITION_NUM {
return errors.New("max partition allowed exceed")
}
coordLog.Infof("expand topic %v partition number to %v", topic, newPartitionNum)
if !self.IsClusterStable() {
return ErrClusterUnstable
}
self.joinStateMutex.Lock()
state, ok := self.joinISRState[topic]
if !ok {
state = &JoinISRState{}
self.joinISRState[topic] = state
}
self.joinStateMutex.Unlock()
state.Lock()
defer state.Unlock()
if state.waitingJoin {
coordLog.Warningf("topic state is not ready:%v, %v ", topic, state)
return ErrWaitingJoinISR.ToErrorType()
}
var meta TopicMetaInfo
if ok, _ := self.leadership.IsExistTopic(topic); !ok {
coordLog.Infof("topic not exist %v :%v", topic)
return ErrTopicNotCreated
} else {
oldMeta, oldGen, err := self.leadership.GetTopicMetaInfo(topic)
if err != nil {
coordLog.Infof("get topic key %v failed :%v", topic, err)
return err
}
meta = oldMeta
if newPartitionNum < meta.PartitionNum {
return errors.New("the partition number can not be reduced")
}
currentNodes := self.getCurrentNodes()
meta.PartitionNum = newPartitionNum
err = self.updateTopicMeta(currentNodes, topic, meta, oldGen)
if err != nil {
coordLog.Infof("update topic %v meta failed :%v", topic, err)
return err
}
return self.checkAndUpdateTopicPartitions(currentNodes, topic, meta)
}
}
func GetTopicArg(rp getter) (string, error) {
topicName := rp.Get("topic")
if topicName == "" {
return "", errors.New("MISSING_ARG_TOPIC")
}
if !protocol.IsValidTopicName(topicName) {
return "", errors.New("INVALID_ARG_TOPIC")
}
return topicName, nil
}
func (p *protocolV2) preparePub(client *nsqd.ClientV2, params [][]byte, maxBody int64) (int32, *nsqd.Topic, error) {
var err error
if len(params) < 2 {
return 0, nil, protocol.NewFatalClientErr(nil, E_INVALID, "insufficient number of parameters")
}
topicName := string(params[1])
if !protocol.IsValidTopicName(topicName) {
return 0, nil, protocol.NewFatalClientErr(nil, "E_BAD_TOPIC",
fmt.Sprintf("topic name %q is not valid", topicName))
}
partition := -1
if len(params) == 3 {
partition, err = strconv.Atoi(string(params[2]))
if err != nil {
return 0, nil, protocol.NewFatalClientErr(nil, "E_BAD_PARTITION",
fmt.Sprintf("topic partition is not valid: %v", err))
}
}
if partition == -1 {
partition = p.ctx.getDefaultPartition(topicName)
}
bodyLen, err := readLen(client.Reader, client.LenSlice)
if err != nil {
return 0, nil, protocol.NewFatalClientErr(err, "E_BAD_BODY", "failed to read body size")
}
if bodyLen <= 0 {
return bodyLen, nil, protocol.NewFatalClientErr(nil, "E_BAD_BODY",
fmt.Sprintf("invalid body size %d", bodyLen))
}
if int64(bodyLen) > maxBody {
return bodyLen, nil, protocol.NewFatalClientErr(nil, "E_BAD_BODY",
fmt.Sprintf("body too big %d > %d", bodyLen, maxBody))
}
topic, err := p.ctx.getExistingTopic(topicName, partition)
if err != nil {
nsqd.NsqLogger().Logf("not existing topic: %v-%v, err:%v", topicName, partition, err.Error())
return bodyLen, nil, protocol.NewFatalClientErr(nil, E_TOPIC_NOT_EXIST, "")
}
if err := p.CheckAuth(client, "PUB", topicName, ""); err != nil {
return bodyLen, nil, err
}
// mpub
return bodyLen, topic, nil
}
func getTopicChanFromOld(command string, params []string) (string, string, error) {
if len(params) <= 0 {
return "", "", protocol.NewFatalClientErr(nil, "E_INVALID", fmt.Sprintf("%s insufficient number of params", command))
}
topicName := params[0]
var channelName string
if len(params) >= 2 {
channelName = params[1]
}
if !protocol.IsValidTopicName(topicName) {
return "", "", protocol.NewFatalClientErr(nil, "E_BAD_TOPIC", fmt.Sprintf("%s topic name '%s' is not valid", command, topicName))
}
if channelName != "" && !protocol.IsValidChannelName(channelName) {
return "", "", protocol.NewFatalClientErr(nil, "E_BAD_CHANNEL", fmt.Sprintf("%s channel name '%s' is not valid", command, channelName))
}
return topicName, channelName, nil
}
func (p *protocolV2) internalCreateTopic(client *nsqd.ClientV2, params [][]byte) ([]byte, error) {
var err error
if len(params) < 3 {
return nil, protocol.NewFatalClientErr(nil, E_INVALID, "CREATE_TOPIC insufficient number of parameters")
}
topicName := string(params[1])
if !protocol.IsValidTopicName(topicName) {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_TOPIC",
fmt.Sprintf("topic name %q is not valid", topicName))
}
partition, err := strconv.Atoi(string(params[2]))
if err != nil {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_PARTITION",
fmt.Sprintf("topic partition is not valid: %v", err))
}
if err = p.CheckAuth(client, "CREATE_TOPIC", topicName, ""); err != nil {
return nil, err
}
if partition < 0 {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_PARTITION", "partition should not less than 0")
}
if p.ctx.nsqdCoord != nil {
return nil, protocol.NewClientErr(err, "E_CREATE_TOPIC_FAILED",
fmt.Sprintf("CREATE_TOPIC is not allowed here while cluster feature enabled."))
}
topic := p.ctx.getTopic(topicName, partition)
if topic == nil {
return nil, protocol.NewClientErr(err, "E_CREATE_TOPIC_FAILED",
fmt.Sprintf("CREATE_TOPIC %v failed", topicName))
}
return okBytes, nil
}
func (n *NSQD) LoadMetadata(disabled int32) {
atomic.StoreInt32(&n.isLoading, 1)
defer atomic.StoreInt32(&n.isLoading, 0)
fn := fmt.Sprintf(path.Join(n.GetOpts().DataPath, "nsqd.%d.dat"), n.GetOpts().ID)
data, err := ioutil.ReadFile(fn)
if err != nil {
if !os.IsNotExist(err) {
nsqLog.LogErrorf("failed to read channel metadata from %s - %s", fn, err)
}
return
}
js, err := simplejson.NewJson(data)
if err != nil {
nsqLog.LogErrorf("failed to parse metadata - %s", err)
return
}
topics, err := js.Get("topics").Array()
if err != nil {
nsqLog.LogErrorf("failed to parse metadata - %s", err)
return
}
for ti := range topics {
topicJs := js.Get("topics").GetIndex(ti)
topicName, err := topicJs.Get("name").String()
if err != nil {
nsqLog.LogErrorf("failed to parse metadata - %s", err)
return
}
if !protocol.IsValidTopicName(topicName) {
nsqLog.LogWarningf("skipping creation of invalid topic %s", topicName)
continue
}
part, err := topicJs.Get("partition").Int()
if err != nil {
nsqLog.LogErrorf("failed to parse metadata - %s", err)
return
}
topic := n.internalGetTopic(topicName, part, disabled)
// old meta should also be loaded
channels, err := topicJs.Get("channels").Array()
if err != nil {
nsqLog.LogErrorf("failed to parse metadata - %s", err)
return
}
for ci := range channels {
channelJs := topicJs.Get("channels").GetIndex(ci)
channelName, err := channelJs.Get("name").String()
if err != nil {
nsqLog.LogErrorf("failed to parse metadata - %s", err)
return
}
if !protocol.IsValidChannelName(channelName) {
nsqLog.LogWarningf("skipping creation of invalid channel %s", channelName)
continue
}
channel := topic.GetChannel(channelName)
paused, _ := channelJs.Get("paused").Bool()
if paused {
channel.Pause()
}
}
// we load channels from the new meta file
topic.LoadChannelMeta()
}
}
func main() {
var selectedMode int
cCfg := nsq.NewConfig()
pCfg := nsq.NewConfig()
// TODO: remove, deprecated
flag.Var(&nsq.ConfigFlag{cCfg}, "reader-opt", "(deprecated) use --consumer-opt")
flag.Var(&nsq.ConfigFlag{cCfg}, "consumer-opt", "option to passthrough to nsq.Consumer (may be given multiple times, see http://godoc.org/github.com/absolute8511/go-nsq#Config)")
flag.Var(&nsq.ConfigFlag{pCfg}, "producer-opt", "option to passthrough to nsq.Producer (may be given multiple times, see http://godoc.org/github.com/absolute8511/go-nsq#Config)")
flag.Parse()
if *showVersion {
fmt.Printf("nsq_to_nsq v%s\n", version.Binary)
return
}
if *topic == "" || *channel == "" {
log.Fatal("--topic and --channel are required")
}
if *destTopic == "" {
*destTopic = *topic
}
if !protocol.IsValidTopicName(*topic) {
log.Fatal("--topic is invalid")
}
if !protocol.IsValidTopicName(*destTopic) {
log.Fatal("--destination-topic is invalid")
}
if !protocol.IsValidChannelName(*channel) {
log.Fatal("--channel is invalid")
}
if len(lookupdHTTPAddrs) == 0 {
log.Fatal("--lookupd-http-address required")
}
if len(destNsqdTCPAddrs) == 0 {
log.Fatal("--destination-nsqd-tcp-address required")
}
switch *mode {
case "round-robin":
selectedMode = ModeRoundRobin
case "hostpool", "epsilon-greedy":
selectedMode = ModeHostPool
}
termChan := make(chan os.Signal, 1)
signal.Notify(termChan, syscall.SIGINT, syscall.SIGTERM)
defaultUA := fmt.Sprintf("nsq_to_nsq/%s go-nsq/%s", version.Binary, nsq.VERSION)
cCfg.UserAgent = defaultUA
cCfg.MaxInFlight = *maxInFlight
// TODO: remove, deprecated
if hasArg("max-backoff-duration") {
log.Printf("WARNING: --max-backoff-duration is deprecated in favor of --consumer-opt=max_backoff_duration,X")
cCfg.MaxBackoffDuration = *maxBackoffDuration
}
consumer, err := nsq.NewConsumer(*topic, *channel, cCfg)
if err != nil {
log.Fatal(err)
}
pCfg.UserAgent = defaultUA
producers := make(map[string]*nsq.Producer)
for _, addr := range destNsqdTCPAddrs {
producer, err := nsq.NewProducer(addr, pCfg)
if err != nil {
log.Fatalf("failed creating producer %s", err)
}
producers[addr] = producer
}
perAddressStatus := make(map[string]*timer_metrics.TimerMetrics)
if len(destNsqdTCPAddrs) == 1 {
// disable since there is only one address
perAddressStatus[destNsqdTCPAddrs[0]] = timer_metrics.NewTimerMetrics(0, "")
} else {
for _, a := range destNsqdTCPAddrs {
perAddressStatus[a] = timer_metrics.NewTimerMetrics(*statusEvery,
fmt.Sprintf("[%s]:", a))
}
}
hostPool := hostpool.New(destNsqdTCPAddrs)
if *mode == "epsilon-greedy" {
hostPool = hostpool.NewEpsilonGreedy(destNsqdTCPAddrs, 0, &hostpool.LinearEpsilonValueCalculator{})
}
handler := &PublishHandler{
addresses: destNsqdTCPAddrs,
producers: producers,
mode: selectedMode,
hostPool: hostPool,
respChan: make(chan *nsq.ProducerTransaction, len(destNsqdTCPAddrs)),
perAddressStatus: perAddressStatus,
timermetrics: timer_metrics.NewTimerMetrics(*statusEvery, "[aggregate]:"),
}
consumer.AddConcurrentHandlers(handler, len(destNsqdTCPAddrs))
for i := 0; i < len(destNsqdTCPAddrs); i++ {
go handler.responder()
}
err = consumer.ConnectToNSQLookupds(lookupdHTTPAddrs)
if err != nil {
log.Fatal(err)
}
for {
select {
case <-consumer.StopChan:
return
case <-termChan:
consumer.Stop()
}
}
}
func (self *NsqLookupCoordinator) ChangeTopicMetaParam(topic string,
newSyncEvery int, newRetentionDay int, newReplicator int) error {
if self.leaderNode.GetID() != self.myNode.GetID() {
coordLog.Infof("not leader while create topic")
return ErrNotNsqLookupLeader
}
if !protocol.IsValidTopicName(topic) {
return errors.New("invalid topic name")
}
if newRetentionDay > MAX_RETENTION_DAYS {
return errors.New("max retention days allowed exceed")
}
if newSyncEvery > MAX_SYNC_EVERY {
return errors.New("max sync every allowed exceed")
}
if newReplicator > 5 {
return errors.New("max replicator allowed exceed")
}
self.joinStateMutex.Lock()
state, ok := self.joinISRState[topic]
if !ok {
state = &JoinISRState{}
self.joinISRState[topic] = state
}
self.joinStateMutex.Unlock()
state.Lock()
defer state.Unlock()
if state.waitingJoin {
coordLog.Warningf("topic state is not ready:%v, %v ", topic, state)
return ErrWaitingJoinISR.ToErrorType()
}
var meta TopicMetaInfo
if ok, _ := self.leadership.IsExistTopic(topic); !ok {
coordLog.Infof("topic not exist %v :%v", topic)
return ErrTopicNotCreated
} else {
oldMeta, oldGen, err := self.leadership.GetTopicMetaInfo(topic)
if err != nil {
coordLog.Infof("get topic key %v failed :%v", topic, err)
return err
}
currentNodes := self.getCurrentNodes()
meta = oldMeta
if newSyncEvery >= 0 {
meta.SyncEvery = newSyncEvery
}
if newRetentionDay >= 0 {
meta.RetentionDay = int32(newRetentionDay)
}
if newReplicator > 0 {
meta.Replica = newReplicator
}
err = self.updateTopicMeta(currentNodes, topic, meta, oldGen)
if err != nil {
return err
}
for i := 0; i < meta.PartitionNum; i++ {
topicInfo, err := self.leadership.GetTopicInfo(topic, i)
if err != nil {
coordLog.Infof("failed get info for topic : %v-%v, %v", topic, i, err)
continue
}
topicReplicaInfo := &topicInfo.TopicPartitionReplicaInfo
err = self.leadership.UpdateTopicNodeInfo(topic, i, topicReplicaInfo, topicReplicaInfo.Epoch)
if err != nil {
coordLog.Infof("failed update info for topic : %v-%v, %v", topic, i, err)
continue
}
rpcErr := self.notifyTopicMetaInfo(topicInfo)
if rpcErr != nil {
coordLog.Warningf("failed notify topic info : %v", rpcErr)
} else {
coordLog.Infof("topic %v update successful.", topicInfo)
}
}
self.triggerCheckTopics("", 0, 0)
}
return nil
}
func (p *protocolV2) internalSUB(client *nsqd.ClientV2, params [][]byte, enableTrace bool,
ordered bool, startFrom *ConsumeOffset) ([]byte, error) {
state := atomic.LoadInt32(&client.State)
if state != stateInit {
nsqd.NsqLogger().LogWarningf("[%s] command in wrong state: %v", client, state)
return nil, protocol.NewFatalClientErr(nil, E_INVALID, "cannot SUB in current state")
}
if client.HeartbeatInterval <= 0 {
return nil, protocol.NewFatalClientErr(nil, E_INVALID, "cannot SUB with heartbeats disabled")
}
if len(params) < 3 {
return nil, protocol.NewFatalClientErr(nil, E_INVALID, "SUB insufficient number of parameters")
}
topicName := string(params[1])
if !protocol.IsValidTopicName(topicName) {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_TOPIC",
fmt.Sprintf("SUB topic name %q is not valid", topicName))
}
partition := -1
channelName := ""
var err error
channelName = string(params[2])
if !protocol.IsValidChannelName(channelName) {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_CHANNEL",
fmt.Sprintf("SUB channel name %q is not valid", channelName))
}
if len(params) == 4 {
partition, err = strconv.Atoi(string(params[3]))
if err != nil {
return nil, protocol.NewFatalClientErr(nil, "E_BAD_PARTITION",
fmt.Sprintf("topic partition is not valid: %v", err))
}
}
if err = p.CheckAuth(client, "SUB", topicName, channelName); err != nil {
return nil, err
}
if partition == -1 {
partition = p.ctx.getDefaultPartition(topicName)
}
topic, err := p.ctx.getExistingTopic(topicName, partition)
if err != nil {
nsqd.NsqLogger().Logf("sub to not existing topic: %v, err:%v", topicName, err.Error())
return nil, protocol.NewFatalClientErr(nil, E_TOPIC_NOT_EXIST, "")
}
if !p.ctx.checkForMasterWrite(topicName, partition) {
nsqd.NsqLogger().Logf("sub failed on not leader: %v-%v, remote is : %v", topicName, partition, client.RemoteAddr())
// we need disable topic here to trigger a notify, maybe we failed to notify lookup last time.
topic.DisableForSlave()
return nil, protocol.NewFatalClientErr(nil, FailedOnNotLeader, "")
}
channel := topic.GetChannel(channelName)
err = channel.AddClient(client.ID, client)
if err != nil {
nsqd.NsqLogger().Logf("sub failed to add client: %v, %v", client, err)
return nil, protocol.NewFatalClientErr(nil, FailedOnNotWritable, "")
}
atomic.StoreInt32(&client.State, stateSubscribed)
client.Channel = channel
if enableTrace {
nsqd.NsqLogger().Logf("sub channel %v with trace enabled, remote is : %v", channelName, client.RemoteAddr())
}
if ordered {
if atomic.LoadInt32(&client.SampleRate) != 0 {
nsqd.NsqLogger().Errorf("%v", ErrOrderChannelOnSampleRate)
return nil, protocol.NewFatalClientErr(nil, E_INVALID, ErrOrderChannelOnSampleRate.Error())
}
channel.SetOrdered(true)
}
if startFrom != nil {
cnt := channel.GetClientsCount()
if cnt > 1 {
nsqd.NsqLogger().LogDebugf("the consume offset: %v can only be set by the first client: %v", startFrom, cnt)
} else {
queueOffset, cnt, err := p.ctx.SetChannelOffset(channel, startFrom, false)
if err != nil {
return nil, protocol.NewFatalClientErr(nil, E_INVALID, err.Error())
}
nsqd.NsqLogger().Logf("set the channel offset: %v (actual set : %v:%v), by client:%v, %v",
startFrom, queueOffset, cnt, client.String(), client.UserAgent)
}
}
client.EnableTrace = enableTrace
// update message pump
client.SubEventChan <- channel
return okBytes, nil
}
func (s *httpServer) doCreateTopic(w http.ResponseWriter, req *http.Request, ps httprouter.Params) (interface{}, error) {
reqParams, err := url.ParseQuery(req.URL.RawQuery)
if err != nil {
return nil, http_api.Err{400, "INVALID_REQUEST"}
}
topicName := reqParams.Get("topic")
if topicName == "" {
return nil, http_api.Err{400, "MISSING_ARG_TOPIC"}
}
if !protocol.IsValidTopicName(topicName) {
return nil, http_api.Err{400, "INVALID_ARG_TOPIC"}
}
pnumStr := reqParams.Get("partition_num")
if pnumStr == "" {
return nil, http_api.Err{400, "MISSING_ARG_TOPIC_PARTITION_NUM"}
}
pnum, err := GetValidPartitionNum(pnumStr)
if err != nil {
return nil, http_api.Err{400, "INVALID_ARG_TOPIC_PARTITION_NUM"}
}
replicatorStr := reqParams.Get("replicator")
if replicatorStr == "" {
return nil, http_api.Err{400, "MISSING_ARG_TOPIC_REPLICATOR"}
}
replicator, err := GetValidReplicator(replicatorStr)
if err != nil {
return nil, http_api.Err{400, "INVALID_ARG_TOPIC_REPLICATOR"}
}
suggestLFStr := reqParams.Get("suggestload")
if suggestLFStr == "" {
suggestLFStr = "0"
}
suggestLF, err := GetValidSuggestLF(suggestLFStr)
if err != nil {
return nil, http_api.Err{400, "INVALID_ARG_TOPIC_LOAD_FACTOR"}
}
syncEveryStr := reqParams.Get("syncdisk")
if syncEveryStr == "" {
syncEveryStr = "0"
}
syncEvery, err := strconv.Atoi(syncEveryStr)
if err != nil {
nsqlookupLog.Logf("error sync disk param: %v, %v", syncEvery, err)
return nil, http_api.Err{400, "INVALID_ARG_TOPIC_SYNC_DISK"}
}
retentionDaysStr := reqParams.Get("retention")
if retentionDaysStr == "" {
retentionDaysStr = "0"
}
retentionDays, err := strconv.Atoi(retentionDaysStr)
if err != nil {
nsqlookupLog.Logf("error retention param: %v, %v", retentionDaysStr, err)
return nil, http_api.Err{400, err.Error()}
}
if !s.ctx.nsqlookupd.coordinator.IsMineLeader() {
nsqlookupLog.LogDebugf("create topic (%s) from remote %v should request to leader", topicName, req.RemoteAddr)
return nil, http_api.Err{400, consistence.ErrFailedOnNotLeader}
}
nsqlookupLog.Logf("creating topic(%s) with partition %v replicator: %v load: %v", topicName, pnum, replicator, suggestLF)
if s.ctx.nsqlookupd.coordinator == nil {
return nil, http_api.Err{500, "MISSING_COORDINATOR"}
}
meta := consistence.TopicMetaInfo{}
meta.PartitionNum = pnum
meta.Replica = replicator
meta.SuggestLF = suggestLF
meta.SyncEvery = syncEvery
meta.RetentionDay = int32(retentionDays)
err = s.ctx.nsqlookupd.coordinator.CreateTopic(topicName, meta)
if err != nil {
nsqlookupLog.LogErrorf("DB: adding topic(%s) failed: %v", topicName, err)
return nil, http_api.Err{400, err.Error()}
}
return nil, nil
}