syntax = "proto3"; package messaging_pb; option go_package = "github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"; option java_package = "seaweedfs.mq"; option java_outer_classname = "MessageQueueProto"; ////////////////////////////////////////////////// service SeaweedMessaging { // control plane rpc FindBrokerLeader (FindBrokerLeaderRequest) returns (FindBrokerLeaderResponse) { } // control plane for balancer rpc PublisherToPubBalancer (stream PublisherToPubBalancerRequest) returns (stream PublisherToPubBalancerResponse) { } rpc BalanceTopics (BalanceTopicsRequest) returns (BalanceTopicsResponse) { } // control plane for topic partitions rpc ListTopics (ListTopicsRequest) returns (ListTopicsResponse) { } rpc ConfigureTopic (ConfigureTopicRequest) returns (ConfigureTopicResponse) { } rpc LookupTopicBrokers (LookupTopicBrokersRequest) returns (LookupTopicBrokersResponse) { } // invoked by the balancer, running on each broker rpc AssignTopicPartitions (AssignTopicPartitionsRequest) returns (AssignTopicPartitionsResponse) { } rpc ClosePublishers(ClosePublishersRequest) returns (ClosePublishersResponse) { } rpc CloseSubscribers(CloseSubscribersRequest) returns (CloseSubscribersResponse) { } // subscriber connects to broker balancer, which coordinates with the subscribers rpc SubscriberToSubCoordinator (stream SubscriberToSubCoordinatorRequest) returns (stream SubscriberToSubCoordinatorResponse) { } // data plane for each topic partition rpc Publish (stream PublishRequest) returns (stream PublishResponse) { } rpc Subscribe (SubscribeRequest) returns (stream SubscribeResponse) { } } ////////////////////////////////////////////////// message FindBrokerLeaderRequest { string filer_group = 1; } message FindBrokerLeaderResponse { string broker = 1; } message Topic { string namespace = 1; string name = 2; } message Partition { int32 ring_size = 1; int32 range_start = 2; int32 range_stop = 3; int64 unix_time_ns = 4; } ////////////////////////////////////////////////// message BrokerStats { int32 cpu_usage_percent = 1; map stats = 2; } message TopicPartitionStats { Topic topic = 1; Partition partition = 2; int32 consumer_count = 3; bool is_leader = 4; } message PublisherToPubBalancerRequest { message InitMessage { string broker = 1; } oneof message { InitMessage init = 1; BrokerStats stats = 2; } } message PublisherToPubBalancerResponse { } message BalanceTopicsRequest { } message BalanceTopicsResponse { } ////////////////////////////////////////////////// message ConfigureTopicRequest { Topic topic = 1; int32 partition_count = 2; } message ConfigureTopicResponse { repeated BrokerPartitionAssignment broker_partition_assignments = 2; } message ListTopicsRequest { } message ListTopicsResponse { repeated Topic topics = 1; } message LookupTopicBrokersRequest { Topic topic = 1; bool is_for_publish = 2; } message LookupTopicBrokersResponse { Topic topic = 1; repeated BrokerPartitionAssignment broker_partition_assignments = 2; } message BrokerPartitionAssignment { Partition partition = 1; string leader_broker = 2; repeated string follower_brokers = 3; } message AssignTopicPartitionsRequest { Topic topic = 1; repeated BrokerPartitionAssignment broker_partition_assignments = 2; bool is_leader = 3; bool is_draining = 4; } message AssignTopicPartitionsResponse { } message SubscriberToSubCoordinatorRequest { message InitMessage { string consumer_group = 1; string consumer_group_instance_id = 2; Topic topic = 3; } message AckMessage { Partition partition = 1; int64 ts_ns = 2; } oneof message { InitMessage init = 1; AckMessage ack = 2; } } message SubscriberToSubCoordinatorResponse { message AssignedPartition { Partition partition = 1; int64 ts_ns = 2; string broker = 3; } message Assignment { int64 generation = 1; repeated AssignedPartition assigned_partitions = 2; } oneof message { Assignment assignment = 1; } } ////////////////////////////////////////////////// message DataMessage { bytes key = 1; bytes value = 2; int64 ts_ns = 3; } message PublishRequest { message InitMessage { Topic topic = 1; Partition partition = 2; int32 ack_interval = 3; } oneof message { InitMessage init = 1; DataMessage data = 2; } int64 sequence = 3; } message PublishResponse { int64 ack_sequence = 1; string error = 2; bool should_close = 3; } message SubscribeRequest { message InitMessage { string consumer_group = 1; string consumer_id = 2; string client_id = 3; Topic topic = 4; Partition partition = 5; oneof offset { int64 start_offset = 6; int64 start_timestamp_ns = 7; } string filter = 8; } message AckMessage { int64 sequence = 1; } oneof message { InitMessage init = 1; AckMessage ack = 2; } } message SubscribeResponse { message CtrlMessage { string error = 1; bool is_end_of_stream = 2; bool is_end_of_topic = 3; } oneof message { CtrlMessage ctrl = 1; DataMessage data = 2; } } message ClosePublishersRequest { Topic topic = 1; int64 unix_time_ns = 2; } message ClosePublishersResponse { } message CloseSubscribersRequest { Topic topic = 1; int64 unix_time_ns = 2; } message CloseSubscribersResponse { }