tech.ydb.core.impl.call

Class EmptyStream<R,W>

java.lang.Object

tech.ydb.core.impl.call.EmptyStream<R,W>

Type Parameters:

R - type of message received

W - type of message to be sent to the server

All Implemented Interfaces:

GrpcReadStream<R>, GrpcReadWriteStream<R,W>

public class EmptyStream<R,W>
extends Object
implements GrpcReadWriteStream<R,W>

Empty stream without messages but with status

Author:

Aleksandr Gorshenin

Nested Class Summary

Nested classes/interfaces inherited from interface tech.ydb.core.grpc.GrpcReadStream

GrpcReadStream.Observer<R>

Constructor Summary

Constructors

Constructor and Description
EmptyStream(Status status)

Method Summary

Modifier and Type	Method and Description
String	authToken()
void	cancel() Prevent any further processing for this GrpcReadStream.
void	close() Close the call for next message sending.
void	sendNext(W message) Send a request message to the server.
CompletableFuture<Status>	start(GrpcReadStream.Observer<R> observer) Start a stream, using observer for processing response messages.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EmptyStream

public EmptyStream(Status status)

Method Detail

authToken

public String authToken()

Specified by:

authToken in interface GrpcReadWriteStream<R,W>

cancel

public void cancel()

Description copied from interface: GrpcReadStream

Prevent any further processing for this GrpcReadStream. No further messages may be sent or will be received. The server is informed of cancellations, but may not stop processing the call. The future for the stream finish status will be completed with CANCELLED code

Specified by:

cancel in interface GrpcReadStream<R>

start

public CompletableFuture<Status> start(GrpcReadStream.Observer<R> observer)

Description copied from interface: GrpcReadStream

Start a stream, using observer for processing response messages. Returns future with the stream finish status.

Specified by:

start in interface GrpcReadStream<R>

Parameters:

observer - receives response messages

Returns:

future with the stream finish status

sendNext

public void sendNext(W message)

Description copied from interface: GrpcReadWriteStream

Send a request message to the server.

Specified by:

sendNext in interface GrpcReadWriteStream<R,W>

Parameters:

message - message to be sent to the server.

close

public void close()

Description copied from interface: GrpcReadWriteStream

Close the call for next message sending. Incoming response messages are unaffected. This should be called when no more messages will be sent from the client.

Specified by:

close in interface GrpcReadWriteStream<R,W>