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113 lines
3.5 KiB
Go
113 lines
3.5 KiB
Go
package sub_client
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import (
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"context"
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"fmt"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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"io"
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)
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func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssignment) error {
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// connect to the partition broker
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return pb.WithBrokerGrpcClient(true, assigned.LeaderBroker, sub.SubscriberConfig.GrpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
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subscribeClient, err := client.SubscribeMessage(context.Background())
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if err != nil {
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return fmt.Errorf("create subscribe client: %v", err)
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}
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perPartitionConcurrency := sub.SubscriberConfig.PerPartitionConcurrency
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if perPartitionConcurrency <= 0 {
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perPartitionConcurrency = 1
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}
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if err = subscribeClient.Send(&mq_pb.SubscribeMessageRequest{
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Message: &mq_pb.SubscribeMessageRequest_Init{
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Init: &mq_pb.SubscribeMessageRequest_InitMessage{
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ConsumerGroup: sub.SubscriberConfig.ConsumerGroup,
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ConsumerId: sub.SubscriberConfig.ConsumerGroupInstanceId,
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Topic: sub.ContentConfig.Topic.ToPbTopic(),
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PartitionOffset: &mq_pb.PartitionOffset{
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Partition: assigned.Partition,
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StartType: mq_pb.PartitionOffsetStartType_EARLIEST_IN_MEMORY,
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},
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Filter: sub.ContentConfig.Filter,
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FollowerBroker: assigned.FollowerBroker,
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Concurrency: perPartitionConcurrency,
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},
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},
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}); err != nil {
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glog.V(0).Infof("subscriber %s connected to partition %+v at %v: %v", sub.ContentConfig.Topic, assigned.Partition, assigned.LeaderBroker, err)
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}
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glog.V(0).Infof("subscriber %s connected to partition %+v at %v", sub.ContentConfig.Topic, assigned.Partition, assigned.LeaderBroker)
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if sub.OnCompletionFunc != nil {
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defer sub.OnCompletionFunc()
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}
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type KeyedOffset struct {
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Key []byte
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Offset int64
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}
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partitionOffsetChan := make(chan KeyedOffset, 1024)
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defer func() {
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close(partitionOffsetChan)
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}()
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executors := util.NewLimitedConcurrentExecutor(int(perPartitionConcurrency))
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go func() {
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for ack := range partitionOffsetChan {
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subscribeClient.SendMsg(&mq_pb.SubscribeMessageRequest{
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Message: &mq_pb.SubscribeMessageRequest_Ack{
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Ack: &mq_pb.SubscribeMessageRequest_AckMessage{
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Key: ack.Key,
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Sequence: ack.Offset,
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},
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},
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})
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}
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subscribeClient.CloseSend()
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}()
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var lastErr error
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for lastErr == nil {
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// glog.V(0).Infof("subscriber %s/%s/%s waiting for message", sub.ContentConfig.Namespace, sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
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resp, err := subscribeClient.Recv()
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if err != nil {
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return fmt.Errorf("subscribe recv: %v", err)
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}
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if resp.Message == nil {
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glog.V(0).Infof("subscriber %s/%s received nil message", sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
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continue
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}
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switch m := resp.Message.(type) {
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case *mq_pb.SubscribeMessageResponse_Data:
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executors.Execute(func() {
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processErr := sub.OnEachMessageFunc(m.Data.Key, m.Data.Value)
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if processErr == nil {
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partitionOffsetChan <- KeyedOffset{
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Key: m.Data.Key,
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Offset: m.Data.TsNs,
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}
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} else {
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lastErr = processErr
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}
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})
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case *mq_pb.SubscribeMessageResponse_Ctrl:
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// glog.V(0).Infof("subscriber %s/%s/%s received control %+v", sub.ContentConfig.Namespace, sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup, m.Ctrl)
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if m.Ctrl.IsEndOfStream || m.Ctrl.IsEndOfTopic {
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return io.EOF
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}
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}
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}
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return lastErr
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})
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}
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