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65 lines
1.9 KiB
65 lines
1.9 KiB
package topic
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import (
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"fmt"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
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"time"
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)
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type LocalPartition struct {
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Partition
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isLeader bool
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FollowerBrokers []pb.ServerAddress
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logBuffer *log_buffer.LogBuffer
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ConsumerCount int32
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}
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func NewLocalPartition(topic Topic, partition Partition, isLeader bool, followerBrokers []pb.ServerAddress) *LocalPartition {
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return &LocalPartition{
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Partition: partition,
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isLeader: isLeader,
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FollowerBrokers: followerBrokers,
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logBuffer: log_buffer.NewLogBuffer(
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fmt.Sprintf("%s/%s/%4d-%4d", topic.Namespace, topic.Name, partition.RangeStart, partition.RangeStop),
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2*time.Minute,
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func(startTime, stopTime time.Time, buf []byte) {
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},
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func() {
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},
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),
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}
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}
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type OnEachMessageFn func(logEntry *filer_pb.LogEntry) error
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func (p LocalPartition) Publish(message *mq_pb.DataMessage) {
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p.logBuffer.AddToBuffer(message.Key, message.Value, time.Now().UnixNano())
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}
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func (p LocalPartition) Subscribe(clientName string, startReadTime time.Time, eachMessageFn OnEachMessageFn) {
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p.logBuffer.LoopProcessLogData(clientName, startReadTime, 0, func() bool {
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return true
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}, eachMessageFn)
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}
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func FromPbBrokerPartitionAssignment(self pb.ServerAddress, assignment *mq_pb.BrokerPartitionAssignment) *LocalPartition {
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isLeaer := assignment.LeaderBroker == string(self)
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localPartition := &LocalPartition{
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Partition: FromPbPartition(assignment.Partition),
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isLeader: isLeaer,
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}
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if !isLeaer {
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return localPartition
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}
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followers := make([]pb.ServerAddress, len(assignment.FollowerBrokers))
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for i, follower := range assignment.FollowerBrokers {
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followers[i] = pb.ServerAddress(follower)
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}
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localPartition.FollowerBrokers = followers
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return localPartition
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}
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