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

Example 21 with Channel

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

the class AbstractFutureStubTest method newStub_blockingStub_throwsException.

@Test
@SuppressWarnings("AssertionFailureIgnored")
public void newStub_blockingStub_throwsException() {
    try {
        NoopBlockingStub unused = NoopFutureStub.newStub(new StubFactory<NoopBlockingStub>() {

            @Override
            public NoopBlockingStub newStub(Channel channel, CallOptions callOptions) {
                return new NoopBlockingStub(channel, callOptions);
            }
        }, channel, CallOptions.DEFAULT);
        fail("should not reach here");
    } catch (AssertionError e) {
        assertThat(e).hasMessageThat().startsWith("Expected AbstractFutureStub");
    }
}

Example 22 with Channel

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

the class AbstractFutureStubTest method newStub_asyncStub_throwsException.

@Test
@SuppressWarnings("AssertionFailureIgnored")
public void newStub_asyncStub_throwsException() {
    try {
        NoopAsyncStub unused = NoopFutureStub.newStub(new StubFactory<NoopAsyncStub>() {

            @Override
            public NoopAsyncStub newStub(Channel channel, CallOptions callOptions) {
                return new NoopAsyncStub(channel, callOptions);
            }
        }, channel, CallOptions.DEFAULT);
        fail("should not reach here");
    } catch (AssertionError e) {
        assertThat(e).hasMessageThat().startsWith("Expected AbstractFutureStub");
    }
}

Example 23 with Channel

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

the class AltsProtocolNegotiatorTest method setup.

@Before
public void setup() throws Exception {
    ChannelHandler uncaughtExceptionHandler = new ChannelDuplexHandler() {

        @Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
            caughtException = cause;
            super.exceptionCaught(ctx, cause);
            ctx.close();
        }
    };
    TsiHandshakerFactory handshakerFactory = new DelegatingTsiHandshakerFactory(FakeTsiHandshaker.clientHandshakerFactory()) {

        @Override
        public TsiHandshaker newHandshaker(String authority, ChannelLogger logger) {
            return new DelegatingTsiHandshaker(super.newHandshaker(authority, logger)) {

                @Override
                public TsiPeer extractPeer() throws GeneralSecurityException {
                    return mockedTsiPeer;
                }

                @Override
                public Object extractPeerObject() throws GeneralSecurityException {
                    return mockedAltsContext;
                }
            };
        }
    };
    ManagedChannel fakeChannel = NettyChannelBuilder.forTarget("localhost:8080").build();
    ObjectPool<Channel> fakeChannelPool = new FixedObjectPool<Channel>(fakeChannel);
    LazyChannel lazyFakeChannel = new LazyChannel(fakeChannelPool);
    ChannelHandler altsServerHandler = new ServerAltsProtocolNegotiator(handshakerFactory, lazyFakeChannel).newHandler(grpcHandler);
    // On real server, WBAEH fires default ProtocolNegotiationEvent. KickNH provides this behavior.
    ChannelHandler handler = new KickNegotiationHandler(altsServerHandler);
    channel = new EmbeddedChannel(uncaughtExceptionHandler, handler);
}

Example 24 with Channel

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

the class AsyncClient method doBenchmark.

private List<Histogram> doBenchmark(SimpleRequest req, List<? extends Channel> channels, long endTime) throws Exception {
    // Initiate the concurrent calls
    List<Future<Histogram>> futures = new ArrayList<>(config.outstandingRpcsPerChannel);
    for (int i = 0; i < config.channels; i++) {
        for (int j = 0; j < config.outstandingRpcsPerChannel; j++) {
            Channel channel = channels.get(i);
            futures.add(doRpcs(channel, req, endTime));
        }
    }
    // Wait for completion
    List<Histogram> histograms = new ArrayList<>(futures.size());
    for (Future<Histogram> future : futures) {
        histograms.add(future.get());
    }
    return histograms;
}

Example 25 with Channel

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

the class CensusModulesTest method testClientInterceptors.

// Test that Census ClientInterceptors uses the TagContext and Span out of the current Context
// to create the ClientCallTracer, and that it intercepts ClientCall.Listener.onClose() to call
// ClientCallTracer.callEnded().
private void testClientInterceptors(boolean nonDefaultContext) {
    grpcServerRule.getServiceRegistry().addService(ServerServiceDefinition.builder("package1.service2").addMethod(method, new ServerCallHandler<String, String>() {

        @Override
        public ServerCall.Listener<String> startCall(ServerCall<String, String> call, Metadata headers) {
            call.sendHeaders(new Metadata());
            call.sendMessage("Hello");
            call.close(Status.PERMISSION_DENIED.withDescription("No you don't"), new Metadata());
            return mockServerCallListener;
        }
    }).build());
    final AtomicReference<CallOptions> capturedCallOptions = new AtomicReference<>();
    ClientInterceptor callOptionsCaptureInterceptor = new ClientInterceptor() {

        @Override
        public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method, CallOptions callOptions, Channel next) {
            capturedCallOptions.set(callOptions);
            return next.newCall(method, callOptions);
        }
    };
    Channel interceptedChannel = ClientInterceptors.intercept(grpcServerRule.getChannel(), callOptionsCaptureInterceptor, censusStats.getClientInterceptor(), censusTracing.getClientInterceptor());
    ClientCall<String, String> call;
    if (nonDefaultContext) {
        Context ctx = io.opencensus.tags.unsafe.ContextUtils.withValue(Context.ROOT, tagger.emptyBuilder().putLocal(StatsTestUtils.EXTRA_TAG, TagValue.create("extra value")).build());
        ctx = ContextUtils.withValue(ctx, fakeClientParentSpan);
        Context origCtx = ctx.attach();
        try {
            call = interceptedChannel.newCall(method, CALL_OPTIONS);
        } finally {
            ctx.detach(origCtx);
        }
    } else {
        assertEquals(io.opencensus.tags.unsafe.ContextUtils.getValue(Context.ROOT), io.opencensus.tags.unsafe.ContextUtils.getValue(Context.current()));
        assertEquals(ContextUtils.getValue(Context.current()), BlankSpan.INSTANCE);
        call = interceptedChannel.newCall(method, CALL_OPTIONS);
    }
    // The interceptor adds tracer factory to CallOptions
    assertEquals("customvalue", capturedCallOptions.get().getOption(CUSTOM_OPTION));
    assertEquals(2, capturedCallOptions.get().getStreamTracerFactories().size());
    assertTrue(capturedCallOptions.get().getStreamTracerFactories().get(0) instanceof CallAttemptsTracerFactory);
    assertTrue(capturedCallOptions.get().getStreamTracerFactories().get(1) instanceof CensusStatsModule.CallAttemptsTracerFactory);
    // Make the call
    Metadata headers = new Metadata();
    call.start(mockClientCallListener, headers);
    StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
    assertNotNull(record);
    TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
    assertEquals(method.getFullMethodName(), methodTag.asString());
    if (nonDefaultContext) {
        TagValue extraTag = record.tags.get(StatsTestUtils.EXTRA_TAG);
        assertEquals("extra value", extraTag.asString());
        assertEquals(2, record.tags.size());
    } else {
        assertNull(record.tags.get(StatsTestUtils.EXTRA_TAG));
        assertEquals(1, record.tags.size());
    }
    if (nonDefaultContext) {
        verify(tracer).spanBuilderWithExplicitParent(eq("Sent.package1.service2.method3"), same(fakeClientParentSpan));
        verify(spyClientSpanBuilder).setRecordEvents(eq(true));
    } else {
        verify(tracer).spanBuilderWithExplicitParent(eq("Sent.package1.service2.method3"), ArgumentMatchers.<Span>isNotNull());
        verify(spyClientSpanBuilder).setRecordEvents(eq(true));
    }
    verify(spyClientSpan, never()).end(any(EndSpanOptions.class));
    // End the call
    call.halfClose();
    call.request(1);
    verify(mockClientCallListener).onClose(statusCaptor.capture(), any(Metadata.class));
    Status status = statusCaptor.getValue();
    assertEquals(Status.Code.PERMISSION_DENIED, status.getCode());
    assertEquals("No you don't", status.getDescription());
    // The intercepting listener calls callEnded() on ClientCallTracer, which records to Census.
    record = statsRecorder.pollRecord();
    assertNotNull(record);
    methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
    assertEquals(method.getFullMethodName(), methodTag.asString());
    TagValue statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
    assertEquals(Status.Code.PERMISSION_DENIED.toString(), statusTag.asString());
    if (nonDefaultContext) {
        TagValue extraTag = record.tags.get(StatsTestUtils.EXTRA_TAG);
        assertEquals("extra value", extraTag.asString());
    } else {
        assertNull(record.tags.get(StatsTestUtils.EXTRA_TAG));
    }
    verify(spyClientSpan).end(EndSpanOptions.builder().setStatus(io.opencensus.trace.Status.PERMISSION_DENIED.withDescription("No you don't")).setSampleToLocalSpanStore(false).build());
    verify(spyClientSpan, never()).end();
    assertZeroRetryRecorded();
}