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* rename * set agent address * refactor * add agent sub * pub messages * grpc new client * can publish records via agent * send init message with session id * fmt * check cancelled request while waiting * use sessionId * handle possible nil stream * subscriber process messages * separate debug port * use atomic int64 * less logs * minor * skip io.EOF * rename * remove unused * use saved offsets * do not reuse session, since always session id is new after restart remove last active ts from SessionEntry * simplify printing * purge unused * just proxy the subscription, skipping the session step * adjust offset types * subscribe offset type and possible value * start after the known tsns * avoid wrongly set startPosition * move * remove * refactor * typo * fix * fix changed path
82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
package agent_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/mq/schema"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials/insecure"
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)
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type PublishSession struct {
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schema *schema.Schema
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partitionCount int
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publisherName string
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stream grpc.BidiStreamingClient[mq_agent_pb.PublishRecordRequest, mq_agent_pb.PublishRecordResponse]
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}
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func NewPublishSession(agentAddress string, topicSchema *schema.Schema, partitionCount int, publisherName string) (*PublishSession, error) {
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// call local agent grpc server to create a new session
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clientConn, err := grpc.NewClient(agentAddress, grpc.WithTransportCredentials(insecure.NewCredentials()))
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if err != nil {
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return nil, fmt.Errorf("dial agent server %s: %v", agentAddress, err)
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}
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agentClient := mq_agent_pb.NewSeaweedMessagingAgentClient(clientConn)
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resp, err := agentClient.StartPublishSession(context.Background(), &mq_agent_pb.StartPublishSessionRequest{
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Topic: &schema_pb.Topic{
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Namespace: topicSchema.Namespace,
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Name: topicSchema.Name,
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},
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PartitionCount: int32(partitionCount),
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RecordType: topicSchema.RecordType,
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PublisherName: publisherName,
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})
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if err != nil {
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return nil, err
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}
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if resp.Error != "" {
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return nil, fmt.Errorf("start publish session: %v", resp.Error)
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}
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stream, err := agentClient.PublishRecord(context.Background())
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if err != nil {
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return nil, fmt.Errorf("publish record: %v", err)
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}
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if err = stream.Send(&mq_agent_pb.PublishRecordRequest{
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SessionId: resp.SessionId,
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}); err != nil {
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return nil, fmt.Errorf("send session id: %v", err)
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}
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return &PublishSession{
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schema: topicSchema,
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partitionCount: partitionCount,
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publisherName: publisherName,
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stream: stream,
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}, nil
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}
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func (a *PublishSession) CloseSession() error {
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if a.schema == nil {
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return nil
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}
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err := a.stream.CloseSend()
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if err != nil {
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return fmt.Errorf("close send: %v", err)
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}
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a.schema = nil
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return err
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}
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func (a *PublishSession) PublishMessageRecord(key []byte, record *schema_pb.RecordValue) error {
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return a.stream.Send(&mq_agent_pb.PublishRecordRequest{
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Key: key,
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Value: record,
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})
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}
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