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process_events.go
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process_events.go
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package consumer
import (
"bytes"
"encoding/json"
"fmt"
"runtime"
"runtime/debug"
"sort"
"strconv"
"sync"
"sync/atomic"
"time"
"github.com/couchbase/eventing/common"
couchbase "github.com/couchbase/eventing/dcp"
mcd "github.com/couchbase/eventing/dcp/transport"
cb "github.com/couchbase/eventing/dcp/transport/client"
"github.com/couchbase/eventing/logging"
"github.com/couchbase/eventing/util"
"github.com/couchbase/gocb/v2"
)
func (c *Consumer) processDCPEvents() {
logPrefix := "Consumer::processDCPEvents"
functionInstanceID := strconv.Itoa(int(c.app.FunctionID)) + "-" + c.app.FunctionInstanceID
for {
if c.cppQueueSizes != nil {
if c.workerQueueCap < (c.numSentEvents-c.cppQueueSizes.NumProcessedEvents) ||
c.workerQueueMemCap < (c.sentEventsSize-c.cppQueueSizes.ProcessedEventsSize) {
logging.Debugf("%s [%s:%s:%d] Throttling, cpp queue sizes: %+v, num sent event: %d, events size: %d",
logPrefix, c.workerName, c.tcpPort, c.Pid(), c.cppQueueSizes, c.numSentEvents, c.sentEventsSize)
// avoid throttling when consumer is pausing or terminating
if !(c.isPausing || atomic.LoadUint32(&c.isTerminateRunning) == 1) {
time.Sleep(10 * time.Millisecond)
}
// If rebalance in ongoing, it's important to read dcp mutations as STREAMBEGIN/END messages could be behind them.
// And it is also important to not queue up mutations in consumer to contain rss growth when cpp queues are full.
// So *continue* only when there is no rebalance on going, or we are not pausing or we are not undeploying
if !(c.isRebalanceOngoing || c.isPausing || atomic.LoadUint32(&c.isTerminateRunning) == 1) {
continue
}
}
}
if len(c.reqStreamCh) > 0 || len(c.clusterStateChangeNotifCh) > 0 {
logging.Debugf("%s [%s:%s:%d] Throttling, len(c.reqStreamCh): %v, len(c.clusterStateChangeNotifCh): %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), len(c.reqStreamCh), len(c.clusterStateChangeNotifCh))
runtime.Gosched()
}
select {
case e, ok := <-c.aggDCPFeed:
if ok == false {
logging.Infof("%s [%s:%s:%d] Closing DCP feed for bucket %q",
logPrefix, c.workerName, c.tcpPort, c.Pid(), c.sourceKeyspace.BucketName)
return
}
atomic.AddInt64(&c.aggDCPFeedMem, -int64(len(e.Value)))
c.updateDcpProcessedMsgs(e.Opcode)
switch e.Opcode {
case mcd.DCP_MUTATION:
if c.filterMutations(e) {
continue
}
logging.Tracef("%s [%s:%s:%d] Got DCP_MUTATION for key: %ru datatype: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), string(e.Key), e.Datatype)
switch e.Datatype {
case dcpDatatypeJSON:
c.dcpMutationCounter++
c.sendEvent(e)
case dcpDatatypeBinary:
if c.binaryDocAllowed {
c.dcpMutationCounter++
c.sendEvent(e)
}
case dcpDatatypeJSONXattr:
c.sendXattrDoc(e, functionInstanceID)
case dcpDatatypeBinXattr:
if c.binaryDocAllowed {
if !c.allowTransactionMutations && c.isTransactionMutation(e) {
c.suppressedDCPMutationCounter++
continue
}
c.sendXattrDoc(e, functionInstanceID)
}
}
case mcd.DCP_DELETION:
if c.filterMutations(e) {
continue
}
if c.processAndSendDcpDelOrExpMessage(e, functionInstanceID, true) {
c.dcpDeletionCounter++
} else {
c.suppressedDCPDeletionCounter++
}
case mcd.DCP_EXPIRATION:
if c.filterMutations(e) {
continue
}
c.processAndSendDcpDelOrExpMessage(e, functionInstanceID, false)
c.dcpExpiryCounter++
case mcd.DCP_STREAMEND:
c.dcpStatsLogger.AddDcpLog(e.VBucket, LogState, string(StateStreamEnd))
logging.Debugf("%s [%s:%s:%d] vb: %d got STREAMEND", logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket)
c.vbProcessingStats.updateVbStat(e.VBucket, "vb_stream_request_metadata_updated", false)
lastReadSeqNo := c.vbProcessingStats.getVbStat(e.VBucket, "last_read_seq_no").(uint64)
c.vbProcessingStats.updateVbStat(e.VBucket, "seq_no_at_stream_end", lastReadSeqNo)
c.vbProcessingStats.updateVbStat(e.VBucket, "timestamp", time.Now().Format(time.RFC3339))
lastSentSeqNo := c.vbProcessingStats.getVbStat(e.VBucket, "last_sent_seq_no").(uint64)
if lastSentSeqNo == 0 {
logging.Infof("STREAMEND without streaming any mutation last_read_seqno: %d last_sent_seqno: %d", lastReadSeqNo, lastSentSeqNo)
c.handleStreamEnd(e.VBucket, lastReadSeqNo)
} else {
c.sendVbFilterData(e.VBucket, lastSentSeqNo, false)
}
case mcd.DCP_SYSTEM_EVENT:
c.cidToKeyspaceCache.updateManifest(e)
if e.EventType == mcd.COLLECTION_DROP || e.EventType == mcd.COLLECTION_FLUSH {
c.SendDeleteCidMsg(e.CollectionID, e.VBucket, e.Seqno)
} else {
c.SendNoOp(e.Seqno, e.VBucket)
}
c.vbProcessingStats.updateVbStat(e.VBucket, "last_read_seq_no", e.Seqno)
c.vbProcessingStats.updateVbStat(e.VBucket, "manifest_id", string(e.ManifestUID))
case mcd.DCP_SEQNO_ADVANCED:
c.SendNoOp(e.Seqno, e.VBucket)
c.vbProcessingStats.updateVbStat(e.VBucket, "last_read_seq_no", e.Seqno)
default:
}
case <-c.stopConsumerCh:
logging.Infof("%s [%s:%s:%d] Exiting processDCPEvents routine",
logPrefix, c.workerName, c.tcpPort, c.Pid())
return
}
}
}
func (c *Consumer) processStatsEvents() {
logPrefix := "Consumer::processStatsEvents"
var timerMsgCounter uint64
for {
select {
case <-c.statsTicker.C:
vbsOwned := c.getCurrentlyOwnedVbs()
c.msgProcessedRWMutex.RLock()
countMsg, dcpOpCount, tStamp := util.SprintDCPCounts(c.dcpMessagesProcessed)
diff := tStamp.Sub(c.opsTimestamp)
dcpOpsDiff := dcpOpCount - c.dcpOpsProcessed
timerOpsDiff := c.timerMessagesProcessed - timerMsgCounter
timerMsgCounter = c.timerMessagesProcessed
seconds := int(diff.Nanoseconds() / (1000 * 1000 * 1000))
if seconds > 0 {
c.dcpOpsProcessedPSec = int(dcpOpsDiff) / seconds
c.timerMessagesProcessedPSec = int(timerOpsDiff) / seconds
}
logging.Infof("%s [%s:%s:%d] DCP events: %s V8 events: %s Timer events: Doc: %v, vbs owned len: %d vbs owned: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), countMsg, util.SprintV8Counts(c.v8WorkerMessagesProcessed),
c.timerMessagesProcessed, len(vbsOwned), util.Condense(vbsOwned))
c.statsRWMutex.RLock()
estats, eErr := json.Marshal(&c.executionStats)
fstats, fErr := json.Marshal(&c.failureStats)
c.statsRWMutex.RUnlock()
if eErr == nil && fErr == nil {
logging.Infof("%s [%s:%s:%d] CPP worker stats. Failure stats: %s execution stats: %s",
logPrefix, c.workerName, c.tcpPort, c.Pid(), string(fstats), string(estats))
}
c.opsTimestamp = tStamp
c.dcpOpsProcessed = dcpOpCount
c.msgProcessedRWMutex.RUnlock()
case <-c.stopConsumerCh:
logging.Infof("%s [%s:%s:%d] Exiting processStatsEvents routine",
logPrefix, c.workerName, c.tcpPort, c.Pid())
return
}
}
}
func (c *Consumer) processFilterEvents() {
logPrefix := "Consumer::processFilterEvents"
for {
select {
case e, ok := <-c.filterDataCh:
if ok == false {
logging.Infof("%s [%s:%s:%d] Closing filterDataCh", logPrefix, c.workerName, c.tcpPort, c.Pid())
return
}
logging.Infof("%s [%s:%s:%d] vb: %d seqNo: %d received on filterDataCh",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.Vbucket, e.SeqNo)
c.handleStreamEnd(e.Vbucket, e.SeqNo)
case <-c.stopConsumerCh:
logging.Infof("%s [%s:%s:%d] Exiting processFilterEvents routine",
logPrefix, c.workerName, c.tcpPort, c.Pid())
return
}
}
}
func (c *Consumer) startDcp() error {
logPrefix := "Consumer::startDcp"
if atomic.LoadUint32(&c.isTerminateRunning) == 1 {
return fmt.Errorf("terminate routine is running")
}
logging.Infof("%s [%s:%s:%d] no. of vbs owned len: %d dump: %s",
logPrefix, c.workerName, c.tcpPort, c.Pid(), len(c.vbnos), util.Condense(c.vbnos))
err := util.Retry(util.NewFixedBackoff(clusterOpRetryInterval), c.retryCount, getEventingNodeAddrOpCallback, c)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
}
var vbSeqnos []uint64
// Fetch high seq number only if dcp stream boundary is from now
if c.dcpStreamBoundary == common.DcpFromNow {
err = util.Retry(util.NewFixedBackoff(clusterOpRetryInterval), c.retryCount, util.GetSeqnos, c.producer.NsServerHostPort(),
"default", c.sourceKeyspace.BucketName, c.srcKeyspaceID, &vbSeqnos, true)
if err != nil && c.dcpStreamBoundary != common.DcpEverything {
logging.Errorf("%s [%s:%s:%d] Failed to fetch vb seqnos, err: %v", logPrefix, c.workerName, c.tcpPort, c.Pid(), err)
return nil
}
} else {
vbSeqnos = make([]uint64, c.numVbuckets)
}
c.cidToKeyspaceCache.refreshManifestFromClusterInfo()
currentManifestUID := "0"
if c.dcpStreamBoundary == common.DcpFromNow {
currentManifestUID, _ = c.getManifestUID(c.sourceKeyspace.BucketName)
}
logging.Debugf("%s [%s:%s:%d] get_all_vb_seqnos: len => %d dump => %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), len(vbSeqnos), vbSeqnos)
vbs := make([]uint16, 0, len(vbSeqnos))
var operr error
for _, vb := range c.vbnos {
vbKey := common.GetCheckpointKey(c.app, vb, common.Checkpoint)
var vbBlob vbucketKVBlob
var cas gocb.Cas
var isNoEnt bool
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, getOpCallback,
c, c.producer.AddMetadataPrefix(vbKey), &vbBlob, &cas, &operr, true, &isNoEnt)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
logging.Errorf("%s [%s:%s:%d] Encryption level changed while accessing metadata bucket", logPrefix, c.workerName, c.tcpPort, c.Pid())
return operr
}
logging.Infof("%s [%s:%s:%d] vb: %d isNoEnt: %t", logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, isNoEnt)
if isNoEnt {
failoverLog, err := c.getFailoverLog(nil, vb, false)
if err != nil {
logging.Errorf("%s [%s:%s:%d] vb: %d failed to grab failover log, err: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, err)
c.addVbForRestreaming(vb)
continue
}
vbuuid, _, err := failoverLog.Latest()
if err != nil {
logging.Errorf("%s [%s:%s:%d] vb: %d failed to grab latest failover log, err: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, err)
c.addVbForRestreaming(vb)
continue
}
c.vbProcessingStats.updateVbStat(vb, "bootstrap_stream_req_done", false)
// Storing vbuuid in metadata bucket, will be required for start
// stream later on
vbBlob.VBuuid = vbuuid
vbBlob.VBId = vb
vbBlob.AssignedWorker = c.ConsumerName()
vbBlob.CurrentVBOwner = c.HostPortAddr()
// Assigning previous owner and worker to current consumer
vbBlob.PreviousAssignedWorker = c.ConsumerName()
vbBlob.PreviousNodeUUID = c.NodeUUID()
vbBlob.PreviousVBOwner = c.HostPortAddr()
vbBlob.ManifestUID = currentManifestUID
if c.dcpStreamBoundary == common.DcpFromNow {
vbBlob.LastSeqNoProcessed = vbSeqnos[int(vb)]
}
vbBlob.CurrentProcessedDocIDTimer = time.Now().UTC().Format(time.RFC3339)
vbBlob.LastProcessedDocIDTimerEvent = time.Now().UTC().Format(time.RFC3339)
vbBlob.NextDocIDTimerToProcess = time.Now().UTC().Add(time.Second).Format(time.RFC3339)
vbBlob.FailoverLog = failoverLog
vbBlobVer := vbucketKVBlobVer{
vbBlob,
util.EventingVer(),
}
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, setOpCallback,
c, c.producer.AddMetadataPrefix(vbKey), &vbBlobVer, &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
logging.Errorf("%s [%s:%s:%d] Encryption level changed while accessing metadata bucket", logPrefix, c.workerName, c.tcpPort, c.Pid())
return operr
}
logging.Infof("%s [%s:%s:%d] vb: %d Created initial metadata blob", logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
if c.checkAndAddToEnqueueMap(vb) {
continue
}
vbs = append(vbs, vb)
switch c.dcpStreamBoundary {
case common.DcpEverything, common.DcpFromPrior:
logging.Debugf("%s [%s:%s:%d] vb: %d Sending streamRequestInfo size: %d",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, len(c.reqStreamCh))
c.reqStreamCh <- &streamRequestInfo{
vb: vb,
vbBlob: &vbBlob,
startSeqNo: uint64(0),
manifestUID: vbBlob.ManifestUID,
}
c.vbProcessingStats.updateVbStat(vb, "manifest_id", vbBlob.ManifestUID)
c.vbProcessingStats.updateVbStat(vb, "start_seq_no", uint64(0))
c.vbProcessingStats.updateVbStat(vb, "timestamp", time.Now().Format(time.RFC3339))
case common.DcpFromNow:
logging.Debugf("%s [%s:%s:%d] vb: %d Sending streamRequestInfo size: %d",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, len(c.reqStreamCh))
c.reqStreamCh <- &streamRequestInfo{
vb: vb,
vbBlob: &vbBlob,
startSeqNo: vbSeqnos[int(vb)],
manifestUID: vbBlob.ManifestUID,
}
c.vbProcessingStats.updateVbStat(vb, "manifest_id", vbBlob.ManifestUID)
c.vbProcessingStats.updateVbStat(vb, "start_seq_no", vbSeqnos[int(vb)])
c.vbProcessingStats.updateVbStat(vb, "timestamp", time.Now().Format(time.RFC3339))
}
} else {
logging.Infof("%s [%s:%s:%d] vb: %d checkpoint blob prexisted, UUID: %s assigned worker: %s",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, vbBlob.NodeUUID, vbBlob.AssignedWorker)
if vbBlob.ManifestUID == "" {
vbBlob.ManifestUID = currentManifestUID
}
sentToReqStream := false
if vbBlob.NodeUUID == c.NodeUUID() || vbBlob.NodeUUID == "" {
// this specifically addresses the corner case described in MB-46092
c.workerVbucketMapRWMutex.RLock()
_, consumerPresent := c.workerVbucketMap[vbBlob.AssignedWorker]
c.workerVbucketMapRWMutex.RUnlock()
if (vbBlob.AssignedWorker == c.ConsumerName() || vbBlob.AssignedWorker == "") || !consumerPresent {
if c.checkAndAddToEnqueueMap(vb) {
continue
}
vbs = append(vbs, vb)
logging.Debugf("%s [%s:%s:%d] vb: %d Sending streamRequestInfo size: %d",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, len(c.reqStreamCh))
sentToReqStream = true
if !vbBlob.BootstrapStreamReqDone {
c.vbProcessingStats.updateVbStat(vb, "bootstrap_stream_req_done", false)
switch c.dcpStreamBoundary {
case common.DcpEverything:
c.reqStreamCh <- &streamRequestInfo{
vb: vb,
vbBlob: &vbBlob,
startSeqNo: 0,
manifestUID: vbBlob.ManifestUID,
}
c.vbProcessingStats.updateVbStat(vb, "start_seq_no", 0)
case common.DcpFromNow:
c.reqStreamCh <- &streamRequestInfo{
vb: vb,
vbBlob: &vbBlob,
startSeqNo: vbSeqnos[int(vb)],
manifestUID: vbBlob.ManifestUID,
}
c.vbProcessingStats.updateVbStat(vb, "manifest_id", vbBlob.ManifestUID)
c.vbProcessingStats.updateVbStat(vb, "start_seq_no", vbSeqnos[int(vb)])
case common.DcpFromPrior:
c.reqStreamCh <- &streamRequestInfo{
vb: vb,
vbBlob: &vbBlob,
startSeqNo: vbBlob.LastSeqNoProcessed,
manifestUID: vbBlob.ManifestUID,
}
c.vbProcessingStats.updateVbStat(vb, "manifest_id", vbBlob.ManifestUID)
c.vbProcessingStats.updateVbStat(vb, "start_seq_no", vbBlob.LastSeqNoProcessed)
default:
sentToReqStream = false
}
} else {
c.reqStreamCh <- &streamRequestInfo{
vb: vb,
vbBlob: &vbBlob,
startSeqNo: vbBlob.LastSeqNoProcessed,
manifestUID: vbBlob.ManifestUID,
}
c.vbProcessingStats.updateVbStat(vb, "manifest_id", vbBlob.ManifestUID)
c.vbProcessingStats.updateVbStat(vb, "start_seq_no", vbBlob.LastSeqNoProcessed)
}
c.vbProcessingStats.updateVbStat(vb, "timestamp", time.Now().Format(time.RFC3339))
}
}
if !sentToReqStream {
c.addVbForRestreaming(vb)
}
}
}
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval*5), c.retryCount, checkIfVbStreamsOpenedCallback, c, vbs, &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
logging.Errorf("%s [%s:%s:%d] Exiting from checkIfVbStreamsOpenedCallback as encryption level has been changed during bootstrap", logPrefix, c.workerName, c.tcpPort, c.Pid())
return operr
}
return nil
}
func (c *Consumer) addToAggChan(dcpFeed *couchbase.DcpFeed) {
logPrefix := "Consumer::addToAggChan"
go func(dcpFeed *couchbase.DcpFeed) {
defer func() {
if r := recover(); r != nil {
trace := debug.Stack()
logging.Errorf("%s [%s:%s:%d] addToAggChan: recover %rm stack trace: %rm",
logPrefix, c.workerName, c.tcpPort, c.Pid(), r, string(trace))
}
}()
for {
if dcpFeed == nil {
logging.Infof("%s [%s:%s:%d] DCP feed has been closed, bailing out",
logPrefix, c.workerName, c.tcpPort, c.Pid())
return
}
select {
case e, ok := <-dcpFeed.C:
if ok == false {
c.hostDcpFeedRWMutex.Lock()
for addr, feed := range c.kvHostDcpFeedMap {
if feed == dcpFeed {
delete(c.kvHostDcpFeedMap, addr)
logging.Infof("%s [%s:%s:%d] Closing dcp feed: %v, count: %d for bucket: %s",
logPrefix, c.workerName, c.tcpPort, c.Pid(), dcpFeed.GetName(),
len(dcpFeed.C), c.sourceKeyspace.BucketName)
}
}
c.hostDcpFeedRWMutex.Unlock()
return
}
switch e.Opcode {
case mcd.DCP_STREAMREQ:
c.updateDcpProcessedMsgs(e.Opcode)
logging.Debugf("%s [%s:%s:%d] vb: %d got STREAMREQ status: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, e.Status)
c.dcpStatsLogger.AddDcpLog(e.VBucket, StreamResponse, fmt.Sprintf("%s", e.Status))
retryCheckMetadataUpdated:
if metadataUpdated, ok := c.vbProcessingStats.getVbStat(e.VBucket, "vb_stream_request_metadata_updated").(bool); ok {
logging.Debugf("%s [%s:%s:%d] vb: %d STREAMREQ metadataUpdated: %t",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, metadataUpdated)
if metadataUpdated {
c.vbProcessingStats.updateVbStat(e.VBucket, "vb_stream_request_metadata_updated", false)
} else {
time.Sleep(100 * time.Millisecond)
goto retryCheckMetadataUpdated
}
} else {
logging.Infof("%s [%s:%s:%d] vb: %d STREAMREQ metadataUpdated not found",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket)
time.Sleep(100 * time.Millisecond)
goto retryCheckMetadataUpdated
}
if e.Status == mcd.SUCCESS {
vbFlog := &vbFlogEntry{statusCode: e.Status, streamReqRetry: false, vb: e.VBucket}
var vbBlob vbucketKVBlob
var cas gocb.Cas
vbKey := common.GetCheckpointKey(c.app, e.VBucket, common.Checkpoint)
var operr error
err := util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, getOpCallback,
c, c.producer.AddMetadataPrefix(vbKey), &vbBlob, &cas, &operr, false)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
continue
} else if operr == common.ErrEncryptionLevelChanged {
logging.Errorf("%s [%s:%s:%d] Skipping current STREAMREQ event as change in encryption level was detected during bootstrap", logPrefix, c.workerName, c.tcpPort, c.Pid())
continue
}
vbuuid, seqNo, err := e.FailoverLog.Latest()
if err != nil {
logging.Errorf("%s [%s:%s:%d] vb: %d STREAMREQ Inserting entry: %#v to vbFlogChan."+
" Failure to get latest failover log, err: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, vbFlog, err)
c.vbFlogChan <- vbFlog
continue
}
c.vbProcessingStats.updateVbStat(e.VBucket, "vb_uuid", vbuuid)
// Update metadata with latest vbuuid and rollback seq no
vbBlob.AssignedWorker = c.ConsumerName()
vbBlob.CurrentVBOwner = c.HostPortAddr()
vbBlob.DCPStreamStatus = dcpStreamRunning
vbBlob.LastSeqNoProcessed = seqNo
vbBlob.NodeUUID = c.uuid
vbBlob.VBuuid = vbuuid
vbBlob.FailoverLog = *e.FailoverLog
var startSeqNo uint64
if seqNo, ok := c.vbProcessingStats.getVbStat(e.VBucket, "last_processed_seq_no").(uint64); ok {
startSeqNo = seqNo
}
c.sendUpdateProcessedSeqNo(e.VBucket, startSeqNo)
if val, ok := c.vbProcessingStats.getVbStat(e.VBucket, "bootstrap_stream_req_done").(bool); ok && !val {
c.vbProcessingStats.updateVbStat(e.VBucket, "bootstrap_stream_req_done", true)
vbBlob.BootstrapStreamReqDone = true
logging.Infof("%s [%s:%s:%d] vb: %d updated bootstrap done flag to: %t",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, vbBlob.BootstrapStreamReqDone)
}
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, addOwnershipHistorySRSCallback,
c, c.producer.AddMetadataPrefix(vbKey), &vbBlob, &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
continue
} else if operr == common.ErrEncryptionLevelChanged {
continue
}
c.vbProcessingStats.updateVbStat(e.VBucket, "assigned_worker", c.ConsumerName())
c.vbProcessingStats.updateVbStat(e.VBucket, "current_vb_owner", c.HostPortAddr())
c.vbProcessingStats.updateVbStat(e.VBucket, "dcp_stream_status", dcpStreamRunning)
c.vbProcessingStats.updateVbStat(e.VBucket, "node_uuid", c.uuid)
c.vbProcessingStats.updateVbStat(e.VBucket, "ever_owned_vb", true)
c.vbProcessingStats.updateVbStat(e.VBucket, "host_name", c.HostPortAddr())
c.vbProcessingStats.updateVbStat(e.VBucket, "last_checkpointed_seq_no", startSeqNo)
c.vbProcessingStats.updateVbStat(e.VBucket, "timestamp", time.Now().Format(time.RFC3339))
c.vbProcessingStats.updateVbStat(e.VBucket, "worker_name", c.ConsumerName())
c.vbProcessingStats.updateVbStat(e.VBucket, "dcp_stream_requested_node_uuid", c.NodeUUID())
c.vbProcessingStats.updateVbStat(e.VBucket, "dcp_stream_requested_worker", c.ConsumerName())
c.vbProcessingStats.updateVbStat(e.VBucket, "vb_filter_ack_received", false)
c.vbProcessingStats.updateVbStat(e.VBucket, "failover_log", vbBlob.FailoverLog)
if !c.checkIfCurrentConsumerShouldOwnVb(e.VBucket) {
c.Lock()
c.vbsRemainingToClose = append(c.vbsRemainingToClose, e.VBucket)
c.Unlock()
c.filterVbEventsRWMutex.Lock()
c.filterVbEvents[e.VBucket] = struct{}{}
c.filterVbEventsRWMutex.Unlock()
}
logging.Debugf("%s [%s:%s:%d] vb: %d STREAMREQ Inserting entry: %#v to vbFlogChan",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, vbFlog)
c.vbFlogChan <- vbFlog
continue
}
if e.Status == mcd.KEY_EEXISTS {
vbFlog := &vbFlogEntry{statusCode: e.Status, streamReqRetry: false, vb: e.VBucket}
logging.Debugf("%s [%s:%s:%d] vb: %d STREAMREQ Inserting entry: %#v to vbFlogChan",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, vbFlog)
c.vbFlogChan <- vbFlog
continue
}
if e.Status != mcd.SUCCESS {
vbFlog := &vbFlogEntry{
flog: e.FailoverLog,
seqNo: e.Seqno,
statusCode: e.Status,
streamReqRetry: true,
vb: e.VBucket,
}
vbKey := common.GetCheckpointKey(c.app, e.VBucket, common.Checkpoint)
var operr error
err := util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, addOwnershipHistorySRFCallback,
c, c.producer.AddMetadataPrefix(vbKey), &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
continue
} else if operr == common.ErrEncryptionLevelChanged {
continue
}
logging.Debugf("%s [%s:%s:%d] vb: %d STREAMREQ Failed. Inserting entry: %#v to vbFlogChan",
logPrefix, c.workerName, c.tcpPort, c.Pid(), e.VBucket, vbFlog)
c.vbFlogChan <- vbFlog
continue
}
// already processed, no need to push to aggfeed
continue
}
if c.aggDCPFeedMem > c.aggDCPFeedMemCap {
time.Sleep(10 * time.Millisecond)
}
atomic.AddInt64(&c.aggDCPFeedMem, int64(len(e.Value)))
select {
case c.aggDCPFeed <- e:
case <-c.stopConsumerCh:
return
}
case <-c.stopConsumerCh:
return
}
}
}(dcpFeed)
}
func (c *Consumer) cleanupStaleDcpFeedHandles() error {
logPrefix := "Consumer::cleanupStaleDcpFeedHandles"
kvAddrsPerVbMap := make(map[string]struct{})
for _, kvAddr := range c.kvVbMap {
kvAddrsPerVbMap[kvAddr] = struct{}{}
}
var kvAddrListPerVbMap []string
for kvAddr := range kvAddrsPerVbMap {
kvAddrListPerVbMap = append(kvAddrListPerVbMap, kvAddr)
}
var kvHostDcpFeedMapEntries []string
c.hostDcpFeedRWMutex.RLock()
for kvAddr := range c.kvHostDcpFeedMap {
kvHostDcpFeedMapEntries = append(kvHostDcpFeedMapEntries, kvAddr)
}
c.hostDcpFeedRWMutex.RUnlock()
kvAddrDcpFeedsToClose := util.StrSliceDiff(kvHostDcpFeedMapEntries, kvAddrListPerVbMap)
if len(kvAddrDcpFeedsToClose) > 0 {
var streamcreateerr error
err := util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, populateDcpFeedVbEntriesCallback, c, &streamcreateerr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if streamcreateerr == common.ErrEncryptionLevelChanged {
logging.Errorf("%s [%s:%s:%d] Exiting as encryption level change during bootstrap", logPrefix, c.workerName, c.tcpPort, c.Pid())
return streamcreateerr
}
}
for _, kvAddr := range kvAddrDcpFeedsToClose {
logging.Infof("%s [%s:%s:%d] Going to cleanup kv dcp feed for kvAddr: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), kvAddr)
c.hostDcpFeedRWMutex.RLock()
feed, ok := c.kvHostDcpFeedMap[kvAddr]
if ok && feed != nil {
feed.Close()
}
c.hostDcpFeedRWMutex.RUnlock()
c.hostDcpFeedRWMutex.Lock()
vbsMetadataToUpdate := c.dcpFeedVbMap[c.kvHostDcpFeedMap[kvAddr]]
delete(c.kvHostDcpFeedMap, kvAddr)
c.hostDcpFeedRWMutex.Unlock()
for _, vb := range vbsMetadataToUpdate {
err := c.clearUpOwnershipInfoFromMeta(vb)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
}
if err == common.ErrEncryptionLevelChanged {
return err
}
}
}
return nil
}
func (c *Consumer) clearUpOwnershipInfoFromMeta(vb uint16) error {
var vbBlob vbucketKVBlob
var cas gocb.Cas
logPrefix := "Consumer::clearUpOwnershipInfoFromMeta"
vbKey := common.GetCheckpointKey(c.app, vb, common.Checkpoint)
var operr error
err := util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, getOpCallback,
c, c.producer.AddMetadataPrefix(vbKey), &vbBlob, &cas, &operr, false)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
logging.Errorf("%s [%s:%s:%d] Encryption due to change in encryption level during bootstrap", logPrefix, c.workerName, c.tcpPort, c.Pid())
return operr
}
vbBlob.AssignedWorker = ""
vbBlob.CurrentVBOwner = ""
vbBlob.DCPStreamStatus = dcpStreamStopped
vbBlob.NodeUUID = ""
vbBlob.PreviousAssignedWorker = c.ConsumerName()
vbBlob.PreviousNodeUUID = c.NodeUUID()
vbBlob.PreviousVBOwner = c.HostPortAddr()
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, addOwnershipHistorySECallback,
c, c.producer.AddMetadataPrefix(vbKey), &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
return operr
}
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, updateCheckpointCallback,
c, c.producer.AddMetadataPrefix(vbKey), &vbBlob, &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
return operr
}
c.vbProcessingStats.updateVbStat(vb, "assigned_worker", vbBlob.AssignedWorker)
c.vbProcessingStats.updateVbStat(vb, "current_vb_owner", vbBlob.CurrentVBOwner)
c.vbProcessingStats.updateVbStat(vb, "dcp_stream_status", vbBlob.DCPStreamStatus)
c.vbProcessingStats.updateVbStat(vb, "node_uuid", vbBlob.NodeUUID)
return nil
}
func (c *Consumer) dcpRequestStreamHandle(vb uint16, vbBlob *vbucketKVBlob, start uint64, mid string) error {
logPrefix := "Consumer::dcpRequestStreamHandle"
defer func() {
if r := recover(); r != nil {
trace := debug.Stack()
logging.Errorf("%s [%s:%s:%d] dcpRequestStreamHandle recover %rm stack trace: %rm",
logPrefix, c.workerName, c.tcpPort, c.Pid(), r, string(trace))
}
}()
c.streamReqRWMutex.Lock()
defer c.streamReqRWMutex.Unlock()
if atomic.LoadUint32(&c.isTerminateRunning) == 1 {
return nil
}
err := util.Retry(util.NewFixedBackoff(clusterOpRetryInterval), c.retryCount, getKvVbMap, c)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
}
vbKvAddr := c.kvVbMap[vb]
// Closing feeds for KV hosts which are no more present in kv vb map
err = c.cleanupStaleDcpFeedHandles()
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if err == common.ErrEncryptionLevelChanged {
return err
}
c.hostDcpFeedRWMutex.Lock()
dcpFeed, ok := c.kvHostDcpFeedMap[vbKvAddr]
if !ok {
feedName := couchbase.NewDcpFeedName(fmt.Sprintf("%d_%s_%s_%s", c.app.FunctionID, vbKvAddr, c.workerName, c.HostPortAddr()))
var operr error
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, startDCPFeedOpCallback, c, feedName, vbKvAddr, &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
c.hostDcpFeedRWMutex.Unlock()
return operr
}
dcpFeed = c.kvHostDcpFeedMap[vbKvAddr]
c.addToAggChan(dcpFeed)
logging.Infof("%s [%s:%s:%d] vb: %d kvAddr: %s Started up new dcp feed. Spawned aggChan routine",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, vbKvAddr)
}
c.hostDcpFeedRWMutex.Unlock()
c.Lock()
c.vbDcpFeedMap[vb] = dcpFeed
c.Unlock()
opaque, flags := uint16(vb), uint32(0)
end := uint64(0xFFFFFFFFFFFFFFFF)
snapStart, snapEnd := start, start
logging.Debugf("%s [%s:%s:%d] vb: %d DCP stream start vbKvAddr: %rs vbuuid: %d startSeq: %d snapshotStart: %d snapshotEnd: %d Manifest id: %s",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, vbKvAddr, vbBlob.VBuuid, start, snapStart, snapEnd, mid)
if c.dcpFeedsClosed {
return errDcpFeedsClosed
}
c.vbsStreamRRWMutex.Lock()
if _, ok := c.vbStreamRequested[vb]; !ok {
c.vbStreamRequested[vb] = start
logging.Debugf("%s [%s:%s:%d] vb: %v Going to make DcpRequestStream call",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
} else {
c.vbsStreamRRWMutex.Unlock()
logging.Debugf("%s [%s:%s:%d] vb: %v skipping DcpRequestStream call as one is already in-progress",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
return nil
}
c.vbsStreamRRWMutex.Unlock()
if atomic.LoadUint32(&c.isTerminateRunning) == 1 {
return fmt.Errorf("function is terminating")
}
c.dcpStreamReqCounter++
hexScopeId, hexColId := getHexKeyspaceIDs(c.srcKeyspaceID)
if mid == "" {
manifestID, ok := c.vbProcessingStats.getVbStat(uint16(vb), "manifest_id").(string)
if !ok || manifestID == "" {
mid = "0"
} else {
mid = manifestID
}
}
requestString := fmt.Sprintf("{seq: %v, uuid: %v, kv_node: %v, mid: %v, scopeID: %v, cid: %v}", start, vbBlob.VBuuid, vbKvAddr, mid, hexScopeId, hexColId)
c.dcpStatsLogger.AddDcpLog(vb, LogState, requestString)
err = dcpFeed.DcpRequestStream(vb, opaque, flags, vbBlob.VBuuid, start, end, snapStart, snapEnd, mid, hexScopeId, hexColId)
if err != nil {
c.dcpStatsLogger.AddDcpLog(vb, StreamResponse, fmt.Sprintf("%v", err))
c.dcpStreamReqErrCounter++
logging.Errorf("%s [%s:%s:%d] vb: %d STREAMREQ call failed on dcpFeed: %v, err: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, dcpFeed.GetName(), err)
c.purgeVbStreamRequested(logPrefix, vb)
if c.checkIfCurrentConsumerShouldOwnVb(vb) {
c.Lock()
c.vbsRemainingToRestream = append(c.vbsRemainingToRestream, vb)
c.Unlock()
}
if err == couchbase.ErrorInvalidVbucket {
return err
}
dcpFeed.Close()
c.hostDcpFeedRWMutex.Lock()
delete(c.kvHostDcpFeedMap, vbKvAddr)
c.hostDcpFeedRWMutex.Unlock()
logging.Infof("%s [%s:%s:%d] vb: %d Closed and deleted dcpfeed mapping to kvAddr: %s",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb, vbKvAddr)
} else {
c.vbProcessingStats.updateVbStat(vb, "last_read_seq_no", start)
c.vbProcessingStats.updateVbStat(vb, "last_processed_seq_no", start)
c.vbProcessingStats.updateVbStat(vb, "last_sent_seq_no", uint64(0))
logging.Debugf("%s [%s:%s:%d] vb: %d Adding entry into inflightDcpStreams",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
c.inflightDcpStreamsRWMutex.Lock()
c.inflightDcpStreams[vb] = struct{}{}
c.inflightDcpStreamsRWMutex.Unlock()
vbKey := common.GetCheckpointKey(c.app, vb, common.Checkpoint)
var operr error
err = util.Retry(util.NewFixedBackoff(bucketOpRetryInterval), c.retryCount, addOwnershipHistorySRRCallback,
c, c.producer.AddMetadataPrefix(vbKey), &operr)
if err == common.ErrRetryTimeout {
logging.Errorf("%s [%s:%s:%d] Exiting due to timeout", logPrefix, c.workerName, c.tcpPort, c.Pid())
return err
} else if operr == common.ErrEncryptionLevelChanged {
return operr
}
c.vbProcessingStats.updateVbStat(vb, "vb_stream_request_metadata_updated", true)
c.vbProcessingStats.updateVbStat(vb, "dcp_stream_requested", true)
c.vbProcessingStats.updateVbStat(vb, "dcp_stream_requested_worker", c.ConsumerName())
c.vbProcessingStats.updateVbStat(vb, "dcp_stream_requested_node_uuid", c.NodeUUID())
logging.Debugf("%s [%s:%s:%d] vb: %d Updated checkpoint blob to indicate STREAMREQ was issued",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
}
return err
}
func (c *Consumer) handleFailoverLog() {
logPrefix := "Consumer::handleFailoverLog"
for {
select {
case vbFlog := <-c.vbFlogChan:
logging.Debugf("%s [%s:%s:%d] vb: %d Got entry from vbFlogChan: %#v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vbFlog.vb, vbFlog)
c.inflightDcpStreamsRWMutex.Lock()
if _, exists := c.inflightDcpStreams[vbFlog.vb]; exists {
logging.Debugf("%s [%s:%s:%d] vb: %d purging entry from inflightDcpStreams",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vbFlog.vb)
delete(c.inflightDcpStreams, vbFlog.vb)
}
c.inflightDcpStreamsRWMutex.Unlock()
if vbFlog.signalStreamEnd {
logging.Debugf("%s [%s:%s:%d] vb: %d got STREAMEND", logPrefix, c.workerName, c.tcpPort, c.Pid(), vbFlog.vb)
continue
}
if !vbFlog.streamReqRetry && vbFlog.statusCode == mcd.SUCCESS {
logging.Debugf("%s [%s:%s:%d] vb: %d DCP Stream created", logPrefix, c.workerName, c.tcpPort, c.Pid(), vbFlog.vb)
continue
}
if vbFlog.streamReqRetry {
vbKey := common.GetCheckpointKey(c.app, vbFlog.vb, common.Checkpoint)
var vbBlob vbucketKVBlob