func (k *kvSender) addIndexForExistingBucket(streamId c.StreamId, bucket string, indexInstList []c.IndexInst,
respCh MsgChannel, stopCh StopChannel) {
addrs, err := k.getAllProjectorAddrs()
if err != nil {
logging.Errorf("KVSender::addIndexForExistingBucket %v %v Error in fetching cluster info %v",
streamId, bucket, err)
respCh <- &MsgError{
err: Error{code: ERROR_KVSENDER_STREAM_REQUEST_ERROR,
severity: FATAL,
cause: err}}
return
}
var currentTs *protobuf.TsVbuuid
protoInstList := convertIndexListToProto(k.config, k.cInfoCache, indexInstList, streamId)
topic := getTopicForStreamId(streamId)
fn := func(r int, err error) error {
//clear the error before every retry
err = nil
for _, addr := range addrs {
execWithStopCh(func() {
ap := newProjClient(addr)
if res, ret := sendAddInstancesRequest(ap, topic, protoInstList); ret != nil {
logging.Errorf("KVSender::addIndexForExistingBucket %v %v Error Received %v from %v",
streamId, bucket, ret, addr)
err = ret
} else {
currentTs = updateCurrentTsFromResponse(bucket, currentTs, res)
}
}, stopCh)
}
//check if we have received currentTs for all vbuckets
numVbuckets := k.config["numVbuckets"].Int()
if currentTs == nil || currentTs.Len() != numVbuckets {
return errors.New("ErrPartialVbStart")
} else {
return err
}
}
rh := c.NewRetryHelper(MAX_KV_REQUEST_RETRY, time.Second, BACKOFF_FACTOR, fn)
err = rh.Run()
if err != nil {
logging.Errorf("KVSender::addIndexForExistingBucket %v %v Error Received %v",
streamId, bucket, err)
respCh <- &MsgError{
err: Error{code: ERROR_KVSENDER_STREAM_REQUEST_ERROR,
severity: FATAL,
cause: err}}
return
}
numVbuckets := k.config["numVbuckets"].Int()
nativeTs := currentTs.ToTsVbuuid(numVbuckets)
respCh <- &MsgStreamUpdate{mType: MSG_SUCCESS,
streamId: streamId,
bucket: bucket,
restartTs: nativeTs}
}
func (k *kvSender) openMutationStream(streamId c.StreamId, indexInstList []c.IndexInst,
restartTs *c.TsVbuuid, respCh MsgChannel, stopCh StopChannel) {
if len(indexInstList) == 0 {
logging.Warnf("KVSender::openMutationStream Empty IndexList. Nothing to do.")
respCh <- &MsgSuccess{}
return
}
protoInstList := convertIndexListToProto(k.config, k.cInfoCache, indexInstList, streamId)
bucket := indexInstList[0].Defn.Bucket
//use any bucket as list of vbs remain the same for all buckets
vbnos, err := k.getAllVbucketsInCluster(bucket)
if err != nil {
logging.Errorf("KVSender::openMutationStream %v %v Error in fetching vbuckets info %v",
streamId, restartTs.Bucket, err)
respCh <- &MsgError{
err: Error{code: ERROR_KVSENDER_STREAM_REQUEST_ERROR,
severity: FATAL,
cause: err}}
return
}
restartTsList, err := k.makeRestartTsForVbs(bucket, restartTs, vbnos)
if err != nil {
logging.Errorf("KVSender::openMutationStream %v %v Error making restart ts %v",
streamId, bucket, err)
respCh <- &MsgError{
err: Error{code: ERROR_KVSENDER_STREAM_REQUEST_ERROR,
severity: FATAL,
cause: err}}
return
}
addrs, err := k.getAllProjectorAddrs()
if err != nil {
logging.Errorf("KVSender::openMutationStream %v %v Error Fetching Projector Addrs %v",
streamId, bucket, err)
respCh <- &MsgError{
err: Error{code: ERROR_KVSENDER_STREAM_REQUEST_ERROR,
severity: FATAL,
cause: err}}
return
}
var rollbackTs *protobuf.TsVbuuid
var activeTs *protobuf.TsVbuuid
topic := getTopicForStreamId(streamId)
fn := func(r int, err error) error {
//clear the error before every retry
err = nil
for _, addr := range addrs {
execWithStopCh(func() {
ap := newProjClient(addr)
if res, ret := k.sendMutationTopicRequest(ap, topic, restartTsList, protoInstList); ret != nil {
//for all errors, retry
logging.Errorf("KVSender::openMutationStream %v %v Error Received %v from %v",
streamId, bucket, ret, addr)
err = ret
} else {
activeTs = updateActiveTsFromResponse(bucket, activeTs, res)
rollbackTs = updateRollbackTsFromResponse(bucket, rollbackTs, res)
}
}, stopCh)
}
if rollbackTs != nil {
//no retry required for rollback
return nil
} else if err != nil {
//retry for any error
return err
} else {
//check if we have received activeTs for all vbuckets
retry := false
if activeTs == nil || activeTs.Len() != len(vbnos) {
retry = true
}
if retry {
return errors.New("ErrPartialVbStart")
} else {
return nil
}
}
}
rh := c.NewRetryHelper(MAX_KV_REQUEST_RETRY, time.Second, BACKOFF_FACTOR, fn)
err = rh.Run()
if rollbackTs != nil {
logging.Infof("KVSender::openMutationStream %v %v Rollback Received %v",
streamId, bucket, rollbackTs)
//convert from protobuf to native format
numVbuckets := k.config["numVbuckets"].Int()
nativeTs := rollbackTs.ToTsVbuuid(numVbuckets)
respCh <- &MsgRollback{streamId: streamId,
bucket: bucket,
rollbackTs: nativeTs}
} else if err != nil {
logging.Errorf("KVSender::openMutationStream %v %v Error Received %v",
streamId, bucket, err)
respCh <- &MsgError{
err: Error{code: ERROR_KVSENDER_STREAM_REQUEST_ERROR,
severity: FATAL,
cause: err}}
} else {
numVbuckets := k.config["numVbuckets"].Int()
respCh <- &MsgSuccessOpenStream{activeTs: activeTs.ToTsVbuuid(numVbuckets)}
}
}