seaweedfs/weed/messaging/broker/broker_grpc_server_publish.go

115 lines
2.3 KiB
Go

package broker
import (
"fmt"
"io"
"time"
"github.com/golang/protobuf/proto"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
)
func (broker *MessageBroker) Publish(stream messaging_pb.SeaweedMessaging_PublishServer) error {
// process initial request
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
// TODO look it up
topicConfig := &messaging_pb.TopicConfiguration{
}
// send init response
initResponse := &messaging_pb.PublishResponse{
Config: nil,
Redirect: nil,
}
err = stream.Send(initResponse)
if err != nil {
return err
}
if initResponse.Redirect != nil {
return nil
}
// get lock
tp := TopicPartition{
Namespace: in.Init.Namespace,
Topic: in.Init.Topic,
Partition: in.Init.Partition,
}
logBuffer := broker.topicLocks.RequestPublisherLock(tp, func(startTime, stopTime time.Time, buf []byte) {
targetFile := fmt.Sprintf(
"%s/%s/%s/%04d-%02d-%02d/%02d-%02d.part%02d",
filer2.TopicsDir, tp.Namespace, tp.Topic,
startTime.Year(), startTime.Month(), startTime.Day(), startTime.Hour(), startTime.Minute(),
tp.Partition,
)
if err := broker.appendToFile(targetFile, topicConfig, buf); err != nil {
glog.V(0).Infof("log write failed %s: %v", targetFile, err)
}
})
defer broker.topicLocks.ReleaseLock(tp, true)
updatesChan := make(chan int32)
go func() {
for update := range updatesChan {
if err := stream.Send(&messaging_pb.PublishResponse{
Config: &messaging_pb.PublishResponse_ConfigMessage{
PartitionCount: update,
},
}); err != nil {
glog.V(0).Infof("err sending publish response: %v", err)
return
}
}
}()
// process each message
for {
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
if in.Data == nil {
continue
}
m := &messaging_pb.Message{
Timestamp: time.Now().UnixNano(),
Key: in.Data.Key,
Value: in.Data.Value,
Headers: in.Data.Headers,
}
println("received message:", string(in.Data.Value))
data, err := proto.Marshal(m)
if err != nil {
glog.Errorf("marshall error: %v\n", err)
continue
}
logBuffer.AddToBuffer(in.Data.Key, data)
}
}