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63 lines
1.9 KiB
63 lines
1.9 KiB
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/topic"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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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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)
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type SubscribeOption struct {
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ConsumerGroup string
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ConsumerGroupInstanceId string
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Topic topic.Topic
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Filter string
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MaxSubscribedPartitions int32
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PerPartitionConcurrency int32
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}
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type SubscribeSession struct {
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Option *SubscribeOption
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stream grpc.BidiStreamingClient[mq_agent_pb.SubscribeRecordRequest, mq_agent_pb.SubscribeRecordResponse]
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sessionId int64
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}
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func NewSubscribeSession(agentAddress string, option *SubscribeOption) (*SubscribeSession, error) {
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// call local agent grpc server to create a new session
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clientConn, err := pb.GrpcDial(context.Background(), agentAddress, true, grpc.WithInsecure())
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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.StartSubscribeSession(context.Background(), &mq_agent_pb.StartSubscribeSessionRequest{
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ConsumerGroup: option.ConsumerGroup,
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ConsumerGroupInstanceId: option.ConsumerGroupInstanceId,
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Topic: &schema_pb.Topic{
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Namespace: option.Topic.Namespace,
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Name: option.Topic.Name,
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},
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MaxSubscribedPartitions: option.MaxSubscribedPartitions,
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Filter: option.Filter,
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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 subscribe session: %v", resp.Error)
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}
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stream, err := agentClient.SubscribeRecord(context.Background())
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if err != nil {
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return nil, fmt.Errorf("subscribe record: %v", err)
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}
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return &SubscribeSession{
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Option: option,
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stream: stream,
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sessionId: resp.SessionId,
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}, nil
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}
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