func (self *NsqdCoordinator) SetChannelConsumeOffsetToCluster(ch *nsqd.Channel, queueOffset int64, cnt int64, force bool) error {
topicName := ch.GetTopicName()
partition := ch.GetTopicPart()
coord, checkErr := self.getTopicCoord(topicName, partition)
if checkErr != nil {
return checkErr.ToErrorType()
}
var syncOffset ChannelConsumerOffset
syncOffset.AllowBackward = true
syncOffset.VCnt = cnt
syncOffset.VOffset = queueOffset
doLocalWrite := func(d *coordData) *CoordErr {
err := ch.SetConsumeOffset(nsqd.BackendOffset(queueOffset), cnt, force)
if err != nil {
if err != nsqd.ErrSetConsumeOffsetNotFirstClient {
coordLog.Infof("failed to set the consume offset: %v, err:%v", queueOffset, err)
return &CoordErr{err.Error(), RpcNoErr, CoordLocalErr}
}
coordLog.Debugf("the consume offset: %v can only be set by the first client", queueOffset)
return ErrLocalSetChannelOffsetNotFirstClient
}
return nil
}
doLocalExit := func(err *CoordErr) {}
doLocalCommit := func() error {
return nil
}
doLocalRollback := func() {}
doRefresh := func(d *coordData) *CoordErr {
return nil
}
doSlaveSync := func(c *NsqdRpcClient, nodeID string, tcData *coordData) *CoordErr {
if ch.IsEphemeral() {
return nil
}
rpcErr := c.UpdateChannelOffset(&tcData.topicLeaderSession, &tcData.topicInfo, ch.GetName(), syncOffset)
if rpcErr != nil {
coordLog.Infof("sync channel(%v) offset to replica %v failed: %v, offset: %v", ch.GetName(),
nodeID, rpcErr, syncOffset)
}
return rpcErr
}
handleSyncResult := func(successNum int, tcData *coordData) bool {
if successNum == len(tcData.topicInfo.ISR) {
return true
}
return false
}
clusterErr := self.doSyncOpToCluster(false, coord, doLocalWrite, doLocalExit, doLocalCommit, doLocalRollback,
doRefresh, doSlaveSync, handleSyncResult)
if clusterErr != nil {
return clusterErr.ToErrorType()
}
return nil
}
func (c *context) SetChannelOffset(ch *nsqd.Channel, startFrom *ConsumeOffset, force bool) (int64, int64, error) {
var l *consistence.CommitLogData
var queueOffset int64
cnt := int64(0)
var err error
if startFrom.OffsetType == offsetTimestampType {
if c.nsqdCoord != nil {
l, queueOffset, cnt, err = c.nsqdCoord.SearchLogByMsgTimestamp(ch.GetTopicName(), ch.GetTopicPart(), startFrom.OffsetValue)
} else {
err = errors.New("Not supported while coordinator disabled")
}
} else if startFrom.OffsetType == offsetSpecialType {
if startFrom.OffsetValue == -1 {
e := ch.GetChannelEnd()
queueOffset = int64(e.Offset())
cnt = e.TotalMsgCnt()
} else {
nsqd.NsqLogger().Logf("not known special offset :%v", startFrom)
err = errors.New("not supported offset type")
}
} else if startFrom.OffsetType == offsetVirtualQueueType {
queueOffset = startFrom.OffsetValue
cnt = 0
if c.nsqdCoord != nil {
l, queueOffset, cnt, err = c.nsqdCoord.SearchLogByMsgOffset(ch.GetTopicName(), ch.GetTopicPart(), queueOffset)
} else {
err = errors.New("Not supported while coordinator disabled")
}
} else if startFrom.OffsetType == offsetMsgCountType {
if c.nsqdCoord != nil {
l, queueOffset, cnt, err = c.nsqdCoord.SearchLogByMsgCnt(ch.GetTopicName(), ch.GetTopicPart(), startFrom.OffsetValue)
} else {
err = errors.New("Not supported while coordinator disabled")
}
} else {
nsqd.NsqLogger().Logf("not supported offset type:%v", startFrom)
err = errors.New("not supported offset type")
}
if err != nil {
nsqd.NsqLogger().Logf("failed to search the consume offset: %v, err:%v", startFrom, err)
return 0, 0, err
}
nsqd.NsqLogger().Logf("%v searched log : %v, offset: %v:%v", startFrom, l, queueOffset, cnt)
if c.nsqdCoord == nil {
err = ch.SetConsumeOffset(nsqd.BackendOffset(queueOffset), cnt, force)
if err != nil {
if err != nsqd.ErrSetConsumeOffsetNotFirstClient {
nsqd.NsqLogger().Logf("failed to set the consume offset: %v, err:%v", startFrom, err)
return 0, 0, err
}
nsqd.NsqLogger().Logf("the consume offset: %v can only be set by the first client", startFrom)
}
} else {
err = c.nsqdCoord.SetChannelConsumeOffsetToCluster(ch, queueOffset, cnt, force)
if err != nil {
if coordErr, ok := err.(*consistence.CommonCoordErr); ok {
if coordErr.IsEqual(consistence.ErrLocalSetChannelOffsetNotFirstClient) {
nsqd.NsqLogger().Logf("the consume offset: %v can only be set by the first client", startFrom)
return queueOffset, cnt, nil
}
}
nsqd.NsqLogger().Logf("failed to set the consume offset: %v (%v:%v), err: %v ", startFrom, queueOffset, cnt, err)
return 0, 0, err
}
}
return queueOffset, cnt, nil
}
func (self *NsqdCoordinator) FinishMessageToCluster(channel *nsqd.Channel, clientID int64, clientAddr string, msgID nsqd.MessageID) error {
topicName := channel.GetTopicName()
partition := channel.GetTopicPart()
coord, checkErr := self.getTopicCoord(topicName, partition)
if checkErr != nil {
return checkErr.ToErrorType()
}
var syncOffset ChannelConsumerOffset
changed := false
var confirmed nsqd.BackendQueueEnd
if channel.IsOrdered() {
if !coord.GetData().IsISRReadyForWrite() {
coordLog.Warningf("topic(%v) finish message ordered failed since no enough ISR", topicName)
coordErrStats.incWriteErr(ErrWriteQuorumFailed)
return ErrWriteQuorumFailed.ToErrorType()
}
confirmed = channel.GetConfirmed()
}
// TODO: maybe use channel to aggregate all the sync of message to reduce the rpc call.
doLocalWrite := func(d *coordData) *CoordErr {
offset, cnt, tmpChanged, localErr := channel.FinishMessage(clientID, clientAddr, msgID)
if localErr != nil {
coordLog.Infof("channel %v finish local msg %v error: %v", channel.GetName(), msgID, localErr)
changed = false
return &CoordErr{localErr.Error(), RpcNoErr, CoordLocalErr}
}
changed = tmpChanged
syncOffset.VOffset = int64(offset)
syncOffset.VCnt = cnt
return nil
}
doLocalExit := func(err *CoordErr) {}
doLocalCommit := func() error {
channel.ContinueConsumeForOrder()
return nil
}
doLocalRollback := func() {
if channel.IsOrdered() && confirmed != nil {
coordLog.Warningf("rollback channel confirm to : %v", confirmed)
// reset read to last confirmed
channel.SetConsumeOffset(confirmed.Offset(), confirmed.TotalMsgCnt(), true)
}
}
doRefresh := func(d *coordData) *CoordErr {
return nil
}
doSlaveSync := func(c *NsqdRpcClient, nodeID string, tcData *coordData) *CoordErr {
if !changed || channel.IsEphemeral() {
return nil
}
var rpcErr *CoordErr
if channel.IsOrdered() {
// if ordered, we need make sure all the consume offset is synced to all replicas
rpcErr = c.UpdateChannelOffset(&tcData.topicLeaderSession, &tcData.topicInfo, channel.GetName(), syncOffset)
} else {
c.NotifyUpdateChannelOffset(&tcData.topicLeaderSession, &tcData.topicInfo, channel.GetName(), syncOffset)
}
if rpcErr != nil {
coordLog.Infof("sync channel(%v) offset to replica %v failed: %v, offset: %v", channel.GetName(),
nodeID, rpcErr, syncOffset)
}
return rpcErr
}
handleSyncResult := func(successNum int, tcData *coordData) bool {
// we can ignore the error if this channel is not ordered. (just sync next time)
if successNum == len(tcData.topicInfo.ISR) || !channel.IsOrdered() {
return true
}
return false
}
clusterErr := self.doSyncOpToCluster(false, coord, doLocalWrite, doLocalExit, doLocalCommit, doLocalRollback,
doRefresh, doSlaveSync, handleSyncResult)
if clusterErr != nil {
return clusterErr.ToErrorType()
}
return nil
}