Examples with ServerCall io.grpc.ServerCall used on opensource projects

Example 51 with ServerCall

use of io.grpc.ServerCall in project grpc-java by grpc.

the class ServerCallsTest method disablingInboundAutoRequestSuppressesRequestsForMoreMessages.

@Test
public void disablingInboundAutoRequestSuppressesRequestsForMoreMessages() throws Exception {
    ServerCallHandler<Integer, Integer> callHandler = ServerCalls.asyncBidiStreamingCall(new ServerCalls.BidiStreamingMethod<Integer, Integer>() {

        @Override
        public StreamObserver<Integer> invoke(StreamObserver<Integer> responseObserver) {
            ServerCallStreamObserver<Integer> serverCallObserver = (ServerCallStreamObserver<Integer>) responseObserver;
            serverCallObserver.disableAutoRequest();
            return new ServerCalls.NoopStreamObserver<>();
        }
    });
    ServerCall.Listener<Integer> callListener = callHandler.startCall(serverCall, new Metadata());
    callListener.onReady();
    // Transport should not call this if nothing has been requested but forcing it here
    // to verify that message delivery does not trigger a call to request(1).
    callListener.onMessage(1);
    // Should never be called
    assertThat(serverCall.requestCalls).isEmpty();
}

Example 52 with ServerCall

use of io.grpc.ServerCall in project grpc-java by grpc.

the class AbstractBenchmark method setup.

/**
 * Initialize the environment for the executor.
 */
public void setup(ExecutorType clientExecutor, ExecutorType serverExecutor, MessageSize requestSize, MessageSize responseSize, FlowWindowSize windowSize, ChannelType channelType, int maxConcurrentStreams, int channelCount) throws Exception {
    ServerCredentials serverCreds = InsecureServerCredentials.create();
    NettyServerBuilder serverBuilder;
    NettyChannelBuilder channelBuilder;
    if (channelType == ChannelType.LOCAL) {
        LocalAddress address = new LocalAddress("netty-e2e-benchmark");
        serverBuilder = NettyServerBuilder.forAddress(address, serverCreds);
        serverBuilder.channelType(LocalServerChannel.class);
        channelBuilder = NettyChannelBuilder.forAddress(address);
        channelBuilder.channelType(LocalChannel.class);
    } else {
        ServerSocket sock = new ServerSocket();
        // Pick a port using an ephemeral socket.
        sock.bind(new InetSocketAddress(BENCHMARK_ADDR, 0));
        SocketAddress address = sock.getLocalSocketAddress();
        sock.close();
        serverBuilder = NettyServerBuilder.forAddress(address, serverCreds).channelType(NioServerSocketChannel.class);
        channelBuilder = NettyChannelBuilder.forAddress(address).channelType(NioSocketChannel.class);
    }
    if (serverExecutor == ExecutorType.DIRECT) {
        serverBuilder.directExecutor();
    }
    if (clientExecutor == ExecutorType.DIRECT) {
        channelBuilder.directExecutor();
    }
    // Always use a different worker group from the client.
    ThreadFactory serverThreadFactory = new DefaultThreadFactory("STF pool", true);
    serverBuilder.workerEventLoopGroup(new NioEventLoopGroup(0, serverThreadFactory));
    serverBuilder.bossEventLoopGroup(new NioEventLoopGroup(1, serverThreadFactory));
    // Always set connection and stream window size to same value
    serverBuilder.flowControlWindow(windowSize.bytes());
    channelBuilder.flowControlWindow(windowSize.bytes());
    channelBuilder.negotiationType(NegotiationType.PLAINTEXT);
    serverBuilder.maxConcurrentCallsPerConnection(maxConcurrentStreams);
    // Create buffers of the desired size for requests and responses.
    PooledByteBufAllocator alloc = PooledByteBufAllocator.DEFAULT;
    // Use a heap buffer for now, since MessageFramer doesn't know how to directly convert this
    // into a WritableBuffer
    // TODO(carl-mastrangelo): convert this into a regular buffer() call.  See
    // https://github.com/grpc/grpc-java/issues/2062#issuecomment-234646216
    request = alloc.heapBuffer(requestSize.bytes());
    request.writerIndex(request.capacity() - 1);
    response = alloc.heapBuffer(responseSize.bytes());
    response.writerIndex(response.capacity() - 1);
    // Simple method that sends and receives NettyByteBuf
    unaryMethod = MethodDescriptor.<ByteBuf, ByteBuf>newBuilder().setType(MethodType.UNARY).setFullMethodName("benchmark/unary").setRequestMarshaller(new ByteBufOutputMarshaller()).setResponseMarshaller(new ByteBufOutputMarshaller()).build();
    pingPongMethod = unaryMethod.toBuilder().setType(MethodType.BIDI_STREAMING).setFullMethodName("benchmark/pingPong").build();
    flowControlledStreaming = pingPongMethod.toBuilder().setFullMethodName("benchmark/flowControlledStreaming").build();
    // Server implementation of unary & streaming methods
    serverBuilder.addService(ServerServiceDefinition.builder(new ServiceDescriptor("benchmark", unaryMethod, pingPongMethod, flowControlledStreaming)).addMethod(unaryMethod, new ServerCallHandler<ByteBuf, ByteBuf>() {

        @Override
        public ServerCall.Listener<ByteBuf> startCall(final ServerCall<ByteBuf, ByteBuf> call, Metadata headers) {
            call.sendHeaders(new Metadata());
            call.request(1);
            return new ServerCall.Listener<ByteBuf>() {

                @Override
                public void onMessage(ByteBuf message) {
                    // no-op
                    message.release();
                    call.sendMessage(response.slice());
                }

                @Override
                public void onHalfClose() {
                    call.close(Status.OK, new Metadata());
                }

                @Override
                public void onCancel() {
                }

                @Override
                public void onComplete() {
                }
            };
        }
    }).addMethod(pingPongMethod, new ServerCallHandler<ByteBuf, ByteBuf>() {

        @Override
        public ServerCall.Listener<ByteBuf> startCall(final ServerCall<ByteBuf, ByteBuf> call, Metadata headers) {
            call.sendHeaders(new Metadata());
            call.request(1);
            return new ServerCall.Listener<ByteBuf>() {

                @Override
                public void onMessage(ByteBuf message) {
                    message.release();
                    call.sendMessage(response.slice());
                    // Request next message
                    call.request(1);
                }

                @Override
                public void onHalfClose() {
                    call.close(Status.OK, new Metadata());
                }

                @Override
                public void onCancel() {
                }

                @Override
                public void onComplete() {
                }
            };
        }
    }).addMethod(flowControlledStreaming, new ServerCallHandler<ByteBuf, ByteBuf>() {

        @Override
        public ServerCall.Listener<ByteBuf> startCall(final ServerCall<ByteBuf, ByteBuf> call, Metadata headers) {
            call.sendHeaders(new Metadata());
            call.request(1);
            return new ServerCall.Listener<ByteBuf>() {

                @Override
                public void onMessage(ByteBuf message) {
                    message.release();
                    while (call.isReady()) {
                        call.sendMessage(response.slice());
                    }
                    // Request next message
                    call.request(1);
                }

                @Override
                public void onHalfClose() {
                    call.close(Status.OK, new Metadata());
                }

                @Override
                public void onCancel() {
                }

                @Override
                public void onComplete() {
                }

                @Override
                public void onReady() {
                    while (call.isReady()) {
                        call.sendMessage(response.slice());
                    }
                }
            };
        }
    }).build());
    // Build and start the clients and servers
    server = serverBuilder.build();
    server.start();
    channels = new ManagedChannel[channelCount];
    ThreadFactory clientThreadFactory = new DefaultThreadFactory("CTF pool", true);
    for (int i = 0; i < channelCount; i++) {
        // Use a dedicated event-loop for each channel
        channels[i] = channelBuilder.eventLoopGroup(new NioEventLoopGroup(1, clientThreadFactory)).build();
    }
}