package topic import ( "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/log_buffer" "time" ) type LocalPartition struct { Partition isLeader bool FollowerBrokers []pb.ServerAddress logBuffer *log_buffer.LogBuffer } type OnEachMessageFn func(logEntry *filer_pb.LogEntry) error func (p LocalPartition) Publish(message *mq_pb.DataMessage) { p.logBuffer.AddToBuffer(message.Key, message.Value, time.Now().UnixNano()) } func (p LocalPartition) Subscribe(clientName string, startReadTime time.Time, eachMessageFn OnEachMessageFn) { p.logBuffer.LoopProcessLogData(clientName, startReadTime, 0, func() bool { return true }, eachMessageFn) } func FromPbBrokerPartitionAssignment(self pb.ServerAddress, assignment *mq_pb.BrokerPartitionAssignment) *LocalPartition { isLeaer := assignment.LeaderBroker == string(self) localPartition := &LocalPartition{ Partition: FromPbPartition(assignment.Partition), isLeader: isLeaer, } if !isLeaer { return localPartition } followers := make([]pb.ServerAddress, len(assignment.FollowerBrokers)) for i, follower := range assignment.FollowerBrokers { followers[i] = pb.ServerAddress(follower) } localPartition.FollowerBrokers = followers return localPartition }