mirror of
https://github.com/seaweedfs/seaweedfs.git
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280 lines
7.9 KiB
Go
280 lines
7.9 KiB
Go
package pub_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/buffered_queue"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"log"
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"sort"
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"sync"
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"time"
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)
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type EachPartitionError struct {
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*mq_pb.BrokerPartitionAssignment
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Err error
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generation int
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}
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type EachPartitionPublishJob struct {
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*mq_pb.BrokerPartitionAssignment
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stopChan chan bool
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wg sync.WaitGroup
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generation int
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inputQueue *buffered_queue.BufferedQueue[*mq_pb.DataMessage]
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}
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func (p *TopicPublisher) startSchedulerThread(wg *sync.WaitGroup) error {
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if err := p.doConfigureTopic(); err != nil {
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return fmt.Errorf("configure topic %s: %v", p.config.Topic, err)
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}
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log.Printf("start scheduler thread for topic %s", p.config.Topic)
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generation := 0
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var errChan chan EachPartitionError
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for {
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glog.V(0).Infof("lookup partitions gen %d topic %s", generation+1, p.config.Topic)
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if assignments, err := p.doLookupTopicPartitions(); err == nil {
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generation++
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glog.V(0).Infof("start generation %d with %d assignments", generation, len(assignments))
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if errChan == nil {
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errChan = make(chan EachPartitionError, len(assignments))
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}
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p.onEachAssignments(generation, assignments, errChan)
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} else {
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glog.Errorf("lookup topic %s: %v", p.config.Topic, err)
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time.Sleep(5 * time.Second)
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continue
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}
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if generation == 1 {
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wg.Done()
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}
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// wait for any error to happen. If so, consume all remaining errors, and retry
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for {
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select {
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case eachErr := <-errChan:
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glog.Errorf("gen %d publish to topic %s partition %v: %v", eachErr.generation, p.config.Topic, eachErr.Partition, eachErr.Err)
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if eachErr.generation < generation {
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continue
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}
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break
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}
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}
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}
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}
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func (p *TopicPublisher) onEachAssignments(generation int, assignments []*mq_pb.BrokerPartitionAssignment, errChan chan EachPartitionError) {
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// TODO assuming this is not re-configured so the partitions are fixed.
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sort.Slice(assignments, func(i, j int) bool {
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return assignments[i].Partition.RangeStart < assignments[j].Partition.RangeStart
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})
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var jobs []*EachPartitionPublishJob
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hasExistingJob := len(p.jobs) == len(assignments)
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for i, assignment := range assignments {
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if assignment.LeaderBroker == "" {
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continue
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}
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if hasExistingJob {
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var existingJob *EachPartitionPublishJob
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existingJob = p.jobs[i]
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if existingJob.BrokerPartitionAssignment.LeaderBroker == assignment.LeaderBroker {
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existingJob.generation = generation
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jobs = append(jobs, existingJob)
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continue
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} else {
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if existingJob.LeaderBroker != "" {
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close(existingJob.stopChan)
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existingJob.LeaderBroker = ""
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existingJob.wg.Wait()
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}
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}
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}
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// start a go routine to publish to this partition
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job := &EachPartitionPublishJob{
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BrokerPartitionAssignment: assignment,
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stopChan: make(chan bool, 1),
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generation: generation,
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inputQueue: buffered_queue.NewBufferedQueue[*mq_pb.DataMessage](1024),
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}
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job.wg.Add(1)
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go func(job *EachPartitionPublishJob) {
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defer job.wg.Done()
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if err := p.doPublishToPartition(job); err != nil {
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errChan <- EachPartitionError{assignment, err, generation}
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}
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}(job)
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jobs = append(jobs, job)
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// TODO assuming this is not re-configured so the partitions are fixed.
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// better just re-use the existing job
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p.partition2Buffer.Insert(assignment.Partition.RangeStart, assignment.Partition.RangeStop, job.inputQueue)
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}
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p.jobs = jobs
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}
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func (p *TopicPublisher) doPublishToPartition(job *EachPartitionPublishJob) error {
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log.Printf("connecting to %v for topic partition %+v", job.LeaderBroker, job.Partition)
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grpcConnection, err := pb.GrpcDial(context.Background(), job.LeaderBroker, true, p.grpcDialOption)
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if err != nil {
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return fmt.Errorf("dial broker %s: %v", job.LeaderBroker, err)
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}
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brokerClient := mq_pb.NewSeaweedMessagingClient(grpcConnection)
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stream, err := brokerClient.PublishMessage(context.Background())
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if err != nil {
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return fmt.Errorf("create publish client: %v", err)
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}
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publishClient := &PublishClient{
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SeaweedMessaging_PublishMessageClient: stream,
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Broker: job.LeaderBroker,
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}
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if err = publishClient.Send(&mq_pb.PublishMessageRequest{
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Message: &mq_pb.PublishMessageRequest_Init{
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Init: &mq_pb.PublishMessageRequest_InitMessage{
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Topic: p.config.Topic.ToPbTopic(),
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Partition: job.Partition,
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AckInterval: 128,
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FollowerBrokers: job.FollowerBrokers,
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},
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},
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}); err != nil {
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return fmt.Errorf("send init message: %v", err)
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}
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// process the hello message
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resp, err := stream.Recv()
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if err != nil {
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return fmt.Errorf("recv init response: %v", err)
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}
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if resp.Error != "" {
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return fmt.Errorf("init response error: %v", resp.Error)
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}
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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for {
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ackResp, err := publishClient.Recv()
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if err != nil {
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e, _ := status.FromError(err)
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if e.Code() == codes.Unknown && e.Message() == "EOF" {
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log.Printf("publish to %s EOF", publishClient.Broker)
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return
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}
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publishClient.Err = err
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log.Printf("publish1 to %s error: %v\n", publishClient.Broker, err)
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return
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}
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if ackResp.Error != "" {
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publishClient.Err = fmt.Errorf("ack error: %v", ackResp.Error)
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log.Printf("publish2 to %s error: %v\n", publishClient.Broker, ackResp.Error)
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return
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}
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if ackResp.AckSequence > 0 {
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log.Printf("ack %d", ackResp.AckSequence)
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}
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}
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}()
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publishCounter := 0
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for data, hasData := job.inputQueue.Dequeue(); hasData; data, hasData = job.inputQueue.Dequeue() {
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if err := publishClient.Send(&mq_pb.PublishMessageRequest{
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Message: &mq_pb.PublishMessageRequest_Data{
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Data: data,
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},
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}); err != nil {
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return fmt.Errorf("send publish data: %v", err)
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}
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publishCounter++
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}
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// CloseSend would cancel the context on the server side
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//if err := publishClient.CloseSend(); err != nil {
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// return fmt.Errorf("close send: %v", err)
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//}
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wg.Wait()
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log.Printf("published %d messages to %v for topic partition %+v", publishCounter, job.LeaderBroker, job.Partition)
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return nil
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}
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func (p *TopicPublisher) doConfigureTopic() (err error) {
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if len(p.config.Brokers) == 0 {
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return fmt.Errorf("no bootstrap brokers")
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}
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var lastErr error
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for _, brokerAddress := range p.config.Brokers {
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err = pb.WithBrokerGrpcClient(false,
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brokerAddress,
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p.grpcDialOption,
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func(client mq_pb.SeaweedMessagingClient) error {
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_, err := client.ConfigureTopic(context.Background(), &mq_pb.ConfigureTopicRequest{
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Topic: p.config.Topic.ToPbTopic(),
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PartitionCount: p.config.CreateTopicPartitionCount,
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})
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return err
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})
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if err == nil {
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return nil
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} else {
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lastErr = fmt.Errorf("%s: %v", brokerAddress, err)
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}
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}
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if lastErr != nil {
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return fmt.Errorf("doConfigureTopic %s: %v", p.config.Topic, err)
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}
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return nil
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}
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func (p *TopicPublisher) doLookupTopicPartitions() (assignments []*mq_pb.BrokerPartitionAssignment, err error) {
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if len(p.config.Brokers) == 0 {
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return nil, fmt.Errorf("no bootstrap brokers")
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}
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var lastErr error
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for _, brokerAddress := range p.config.Brokers {
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err := pb.WithBrokerGrpcClient(false,
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brokerAddress,
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p.grpcDialOption,
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func(client mq_pb.SeaweedMessagingClient) error {
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lookupResp, err := client.LookupTopicBrokers(context.Background(),
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&mq_pb.LookupTopicBrokersRequest{
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Topic: p.config.Topic.ToPbTopic(),
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})
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glog.V(0).Infof("lookup topic %s: %v", p.config.Topic, lookupResp)
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if err != nil {
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return err
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}
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if len(lookupResp.BrokerPartitionAssignments) == 0 {
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return fmt.Errorf("no broker partition assignments")
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}
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assignments = lookupResp.BrokerPartitionAssignments
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return nil
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})
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if err == nil {
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return assignments, nil
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} else {
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lastErr = err
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}
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}
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return nil, fmt.Errorf("lookup topic %s: %v", p.config.Topic, lastErr)
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}
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