diff options
Diffstat (limited to 'weed/mq/broker/broker_grpc_configure.go')
| -rw-r--r-- | weed/mq/broker/broker_grpc_configure.go | 134 |
1 files changed, 131 insertions, 3 deletions
diff --git a/weed/mq/broker/broker_grpc_configure.go b/weed/mq/broker/broker_grpc_configure.go index 467ceb81d..008c08bbe 100644 --- a/weed/mq/broker/broker_grpc_configure.go +++ b/weed/mq/broker/broker_grpc_configure.go @@ -8,10 +8,14 @@ import ( "github.com/seaweedfs/seaweedfs/weed/mq/pub_balancer" "github.com/seaweedfs/seaweedfs/weed/mq/topic" "github.com/seaweedfs/seaweedfs/weed/pb" + "github.com/seaweedfs/seaweedfs/weed/pb/filer_pb" "github.com/seaweedfs/seaweedfs/weed/pb/mq_pb" + "github.com/seaweedfs/seaweedfs/weed/util" "github.com/seaweedfs/seaweedfs/weed/util/log_buffer" "google.golang.org/grpc/codes" "google.golang.org/grpc/status" + "google.golang.org/protobuf/proto" + "math" "time" ) @@ -78,7 +82,7 @@ func (b *MessageQueueBroker) AssignTopicPartitions(c context.Context, request *m // drain existing topic partition subscriptions for _, assignment := range request.BrokerPartitionAssignments { - localPartition := topic.FromPbBrokerPartitionAssignment(self, assignment, b.genLogFlushFunc(request.Topic, assignment.Partition)) + localPartition := topic.FromPbBrokerPartitionAssignment(self, assignment, b.genLogFlushFunc(request.Topic, assignment.Partition), b.genLogOnDiskReadFunc(request.Topic, assignment.Partition)) if request.IsDraining { // TODO drain existing topic partition subscriptions @@ -122,9 +126,10 @@ func (b *MessageQueueBroker) genLogFlushFunc(t *mq_pb.Topic, partition *mq_pb.Pa } startTime, stopTime = startTime.UTC(), stopTime.UTC() - fileName := startTime.Format(topic.TIME_FORMAT) - targetFile := fmt.Sprintf("%s/%s",partitionDir, fileName) + targetFile := fmt.Sprintf("%s/%s",partitionDir, startTime.Format(topic.TIME_FORMAT)) + + // TODO append block with more metadata for { if err := b.appendToFile(targetFile, buf); err != nil { @@ -136,3 +141,126 @@ func (b *MessageQueueBroker) genLogFlushFunc(t *mq_pb.Topic, partition *mq_pb.Pa } } } + +func (b *MessageQueueBroker) genLogOnDiskReadFunc(t *mq_pb.Topic, partition *mq_pb.Partition) log_buffer.LogReadFromDiskFuncType { + topicDir := fmt.Sprintf("%s/%s/%s", filer.TopicsDir, t.Namespace, t.Name) + partitionGeneration := time.Unix(0, partition.UnixTimeNs).UTC().Format(topic.TIME_FORMAT) + partitionDir := fmt.Sprintf("%s/%s/%04d-%04d", topicDir, partitionGeneration, partition.RangeStart, partition.RangeStop) + + lookupFileIdFn := func(fileId string) (targetUrls []string, err error) { + return b.MasterClient.LookupFileId(fileId) + } + + eachChunkFn := func (buf []byte, eachLogEntryFn log_buffer.EachLogEntryFuncType, starTsNs, stopTsNs int64) (processedTsNs int64, err error) { + for pos := 0; pos+4 < len(buf); { + + size := util.BytesToUint32(buf[pos : pos+4]) + if pos+4+int(size) > len(buf) { + err = fmt.Errorf("LogOnDiskReadFunc: read [%d,%d) from [0,%d)", pos, pos+int(size)+4, len(buf)) + return + } + entryData := buf[pos+4 : pos+4+int(size)] + + logEntry := &filer_pb.LogEntry{} + if err = proto.Unmarshal(entryData, logEntry); err != nil { + pos += 4 + int(size) + err = fmt.Errorf("unexpected unmarshal mq_pb.Message: %v", err) + return + } + if logEntry.TsNs < starTsNs { + pos += 4 + int(size) + continue + } + if stopTsNs != 0 && logEntry.TsNs > stopTsNs { + println("stopTsNs", stopTsNs, "logEntry.TsNs", logEntry.TsNs) + return + } + + if err = eachLogEntryFn(logEntry); err != nil { + err = fmt.Errorf("process log entry %v: %v", logEntry, err) + return + } + + processedTsNs = logEntry.TsNs + + pos += 4 + int(size) + + } + + return + } + + eachFileFn := func(entry *filer_pb.Entry, eachLogEntryFn log_buffer.EachLogEntryFuncType, starTsNs, stopTsNs int64) (processedTsNs int64, err error) { + if len(entry.Content) > 0 { + glog.Warningf("this should not happen. unexpected content in %s/%s", partitionDir, entry.Name) + return + } + var urlStrings []string + for _, chunk := range entry.Chunks { + if chunk.Size == 0 { + continue + } + if chunk.IsChunkManifest{ + glog.Warningf("this should not happen. unexpected chunk manifest in %s/%s", partitionDir, entry.Name) + return + } + urlStrings, err = lookupFileIdFn(chunk.FileId) + if err != nil { + err = fmt.Errorf("lookup %s: %v", chunk.FileId, err) + return + } + if len(urlStrings) == 0 { + err = fmt.Errorf("no url found for %s", chunk.FileId) + return + } + + // try one of the urlString until util.Get(urlString) succeeds + var processed bool + for _, urlString := range urlStrings { + // TODO optimization opportunity: reuse the buffer + var data []byte + if data, _, err = util.Get(urlString); err == nil { + processed = true + if processedTsNs, err = eachChunkFn(data, eachLogEntryFn, starTsNs, stopTsNs); err != nil { + return + } + break + } + } + if !processed { + err = fmt.Errorf("no data processed for %s %s", entry.Name, chunk.FileId) + return + } + + } + return + } + + return func(startPosition log_buffer.MessagePosition, stopTsNs int64, eachLogEntryFn log_buffer.EachLogEntryFuncType) (lastReadPosition log_buffer.MessagePosition, isDone bool, err error) { + startFileName := startPosition.UTC().Format(topic.TIME_FORMAT) + startTsNs := startPosition.Time.UnixNano() + stopTime := time.Unix(0, stopTsNs) + var processedTsNs int64 + err = b.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error { + return filer_pb.SeaweedList(client, partitionDir, "", func(entry *filer_pb.Entry, isLast bool) error { + if entry.IsDirectory { + return nil + } + if stopTsNs!=0 && entry.Name > stopTime.UTC().Format(topic.TIME_FORMAT) { + isDone = true + return nil + } + if entry.Name < startPosition.UTC().Format(topic.TIME_FORMAT) { + return nil + } + if processedTsNs, err = eachFileFn(entry, eachLogEntryFn, startTsNs, stopTsNs); err != nil { + return err + } + return nil + + }, startFileName, true, math.MaxInt32) + }) + lastReadPosition = log_buffer.NewMessagePosition(processedTsNs, -2) + return + } +} |