程序包 apache.rocketmq.v2

类 MessagingServiceGrpc.MessagingServiceBlockingStub

  • 封闭类:
    MessagingServiceGrpc
    public static final class MessagingServiceGrpc.MessagingServiceBlockingStub
extends io.grpc.stub.AbstractBlockingStub<MessagingServiceGrpc.MessagingServiceBlockingStub>
     For all the RPCs in MessagingService, the following error handling policies
 apply:
 If the request doesn't bear a valid authentication credential, return a
 response with common.status.code == `UNAUTHENTICATED`. If the authenticated
 user is not granted with sufficient permission to execute the requested
 operation, return a response with common.status.code == `PERMISSION_DENIED`.
 If the per-user-resource-based quota is exhausted, return a response with
 common.status.code == `RESOURCE_EXHAUSTED`. If any unexpected server-side
 errors raise, return a response with common.status.code == `INTERNAL`.

    • 方法详细资料

      • queryRoute

        public QueryRouteResponse queryRoute​(QueryRouteRequest request)
         Queries the route entries of the requested topic in the perspective of the
 given endpoints. On success, servers should return a collection of
 addressable message-queues. Note servers may return customized route
 entries based on endpoints provided.
 If the requested topic doesn't exist, returns `NOT_FOUND`.
 If the specific endpoints is empty, returns `INVALID_ARGUMENT`.

      • heartbeat

        public HeartbeatResponse heartbeat​(HeartbeatRequest request)
         Producer or consumer sends HeartbeatRequest to servers periodically to
 keep-alive. Additionally, it also reports client-side configuration,
 including topic subscription, load-balancing group name, etc.
 Returns `OK` if success.
 If a client specifies a language that is not yet supported by servers,
 returns `INVALID_ARGUMENT`

      • sendMessage

        public SendMessageResponse sendMessage​(SendMessageRequest request)
         Delivers messages to brokers.
 Clients may further:
 1. Refine a message destination to message-queues which fulfills parts of
 FIFO semantic;
 2. Flag a message as transactional, which keeps it invisible to consumers
 until it commits;
 3. Time a message, making it invisible to consumers till specified
 time-point;
 4. And more...
 Returns message-id or transaction-id with status `OK` on success.
 If the destination topic doesn't exist, returns `NOT_FOUND`.

      • queryAssignment

        public QueryAssignmentResponse queryAssignment​(QueryAssignmentRequest request)
         Queries the assigned route info of a topic for current consumer,
 the returned assignment result is decided by server-side load balancer.
 If the corresponding topic doesn't exist, returns `NOT_FOUND`.
 If the specific endpoints is empty, returns `INVALID_ARGUMENT`.

      • receiveMessage

        public Iterator<ReceiveMessageResponse> receiveMessage​(ReceiveMessageRequest request)
         Receives messages from the server in batch manner, returns a set of
 messages if success. The received messages should be acked or redelivered
 after processed.
 If the pending concurrent receive requests exceed the quota of the given
 consumer group, returns `UNAVAILABLE`. If the upstream store server hangs,
 return `DEADLINE_EXCEEDED` in a timely manner. If the corresponding topic
 or consumer group doesn't exist, returns `NOT_FOUND`. If there is no new
 message in the specific topic, returns `OK` with an empty message set.
 Please note that client may suffer from false empty responses.
 If failed to receive message from remote, server must return only one
 `ReceiveMessageResponse` as the reply to the request, whose `Status` indicates
 the specific reason of failure, otherwise, the reply is considered successful.

      • ackMessage

        public AckMessageResponse ackMessage​(AckMessageRequest request)
         Acknowledges the message associated with the `receipt_handle` or `offset`
 in the `AckMessageRequest`, it means the message has been successfully
 processed. Returns `OK` if the message server remove the relevant message
 successfully.
 If the given receipt_handle is illegal or out of date, returns
 `INVALID_ARGUMENT`.

      • changeInvisibleDuration

        public ChangeInvisibleDurationResponse changeInvisibleDuration​(ChangeInvisibleDurationRequest request)
         Once a message is retrieved from consume queue on behalf of the group, it
 will be kept invisible to other clients of the same group for a period of
 time. The message is supposed to be processed within the invisible
 duration. If the client, which is in charge of the invisible message, is
 not capable of processing the message timely, it may use
 ChangeInvisibleDuration to lengthen invisible duration.