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

Example 86 with ManagedChannel

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

the class ProtoReflectionServiceTest method sharedServiceBetweenServers.

@Test
public void sharedServiceBetweenServers() throws IOException, ExecutionException, InterruptedException {
    Server anotherServer = InProcessServerBuilder.forName("proto-reflection-test-2").directExecutor().addService(reflectionService).addService(new AnotherReflectableServiceGrpc.AnotherReflectableServiceImplBase() {
    }).build().start();
    grpcCleanupRule.register(anotherServer);
    ManagedChannel anotherChannel = grpcCleanupRule.register(InProcessChannelBuilder.forName("proto-reflection-test-2").directExecutor().build());
    ServerReflectionGrpc.ServerReflectionStub stub2 = ServerReflectionGrpc.newStub(anotherChannel);
    ServerReflectionRequest request = ServerReflectionRequest.newBuilder().setHost(TEST_HOST).setListServices("services").build();
    StreamRecorder<ServerReflectionResponse> responseObserver = StreamRecorder.create();
    StreamObserver<ServerReflectionRequest> requestObserver = stub2.serverReflectionInfo(responseObserver);
    requestObserver.onNext(request);
    requestObserver.onCompleted();
    List<ServiceResponse> response = responseObserver.firstValue().get().getListServicesResponse().getServiceList();
    assertEquals(new HashSet<>(Arrays.asList(ServiceResponse.newBuilder().setName("grpc.reflection.v1alpha.ServerReflection").build(), ServiceResponse.newBuilder().setName("grpc.reflection.testing.AnotherReflectableService").build())), new HashSet<>(response));
}

Example 87 with ManagedChannel

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

the class ManagedChannelImplTest method oobChannelsWhenChannelShutdownNow.

@Test
public void oobChannelsWhenChannelShutdownNow() {
    createChannel();
    ManagedChannel oob1 = helper.createOobChannel(Collections.singletonList(addressGroup), "oob1Authority");
    ManagedChannel oob2 = helper.createOobChannel(Collections.singletonList(addressGroup), "oob2Authority");
    oob1.newCall(method, CallOptions.DEFAULT).start(mockCallListener, new Metadata());
    oob2.newCall(method, CallOptions.DEFAULT).start(mockCallListener2, new Metadata());
    assertThat(transports).hasSize(2);
    MockClientTransportInfo ti1 = transports.poll();
    MockClientTransportInfo ti2 = transports.poll();
    ti1.listener.transportReady();
    ti2.listener.transportReady();
    channel.shutdownNow();
    verify(ti1.transport).shutdownNow(any(Status.class));
    verify(ti2.transport).shutdownNow(any(Status.class));
    ti1.listener.transportShutdown(Status.UNAVAILABLE.withDescription("shutdown now"));
    ti2.listener.transportShutdown(Status.UNAVAILABLE.withDescription("shutdown now"));
    ti1.listener.transportTerminated();
    assertFalse(channel.isTerminated());
    ti2.listener.transportTerminated();
    assertTrue(channel.isTerminated());
}

Example 88 with ManagedChannel

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

the class ManagedChannelImplTest method badServiceConfigIsRecoverable.

@Test
public void badServiceConfigIsRecoverable() throws Exception {
    final List<EquivalentAddressGroup> addresses = ImmutableList.of(new EquivalentAddressGroup(new SocketAddress() {
    }));
    final class FakeNameResolver extends NameResolver {

        Listener2 listener;

        @Override
        public String getServiceAuthority() {
            return "also fake";
        }

        @Override
        public void start(Listener2 listener) {
            this.listener = listener;
            listener.onResult(ResolutionResult.newBuilder().setAddresses(addresses).setServiceConfig(ConfigOrError.fromError(Status.INTERNAL.withDescription("kaboom is invalid"))).build());
        }

        @Override
        public void shutdown() {
        }
    }
    final class FakeNameResolverFactory2 extends NameResolver.Factory {

        FakeNameResolver resolver;

        @Nullable
        @Override
        public NameResolver newNameResolver(URI targetUri, NameResolver.Args args) {
            return (resolver = new FakeNameResolver());
        }

        @Override
        public String getDefaultScheme() {
            return "fake";
        }
    }
    FakeNameResolverFactory2 factory = new FakeNameResolverFactory2();
    ManagedChannelImplBuilder customBuilder = new ManagedChannelImplBuilder(TARGET, new ClientTransportFactoryBuilder() {

        @Override
        public ClientTransportFactory buildClientTransportFactory() {
            return mockTransportFactory;
        }
    }, null);
    customBuilder.executorPool = executorPool;
    customBuilder.channelz = channelz;
    ManagedChannel mychannel = customBuilder.nameResolverFactory(factory).build();
    ClientCall<Void, Void> call1 = mychannel.newCall(TestMethodDescriptors.voidMethod(), CallOptions.DEFAULT);
    ListenableFuture<Void> future1 = ClientCalls.futureUnaryCall(call1, null);
    executor.runDueTasks();
    try {
        future1.get(1, TimeUnit.SECONDS);
        Assert.fail();
    } catch (ExecutionException e) {
        assertThat(Throwables.getStackTraceAsString(e.getCause())).contains("kaboom");
    }
    // ok the service config is bad, let's fix it.
    Map<String, Object> rawServiceConfig = parseConfig("{\"loadBalancingConfig\": [{\"round_robin\": {}}]}");
    Object fakeLbConfig = new Object();
    PolicySelection lbConfigs = new PolicySelection(mockLoadBalancerProvider, fakeLbConfig);
    mockLoadBalancerProvider.parseLoadBalancingPolicyConfig(rawServiceConfig);
    ManagedChannelServiceConfig managedChannelServiceConfig = createManagedChannelServiceConfig(rawServiceConfig, lbConfigs);
    factory.resolver.listener.onResult(ResolutionResult.newBuilder().setAddresses(addresses).setServiceConfig(ConfigOrError.fromConfig(managedChannelServiceConfig)).build());
    ClientCall<Void, Void> call2 = mychannel.newCall(TestMethodDescriptors.voidMethod(), CallOptions.DEFAULT.withDeadlineAfter(5, TimeUnit.SECONDS));
    ListenableFuture<Void> future2 = ClientCalls.futureUnaryCall(call2, null);
    timer.forwardTime(1234, TimeUnit.SECONDS);
    executor.runDueTasks();
    try {
        future2.get();
        Assert.fail();
    } catch (ExecutionException e) {
        assertThat(Throwables.getStackTraceAsString(e.getCause())).contains("deadline");
    }
    mychannel.shutdownNow();
}

Example 89 with ManagedChannel

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

the class ManagedChannelImplTest method oobchannels.

@Test
public void oobchannels() {
    createChannel();
    ManagedChannel oob1 = helper.createOobChannel(Collections.singletonList(addressGroup), "oob1authority");
    ManagedChannel oob2 = helper.createOobChannel(Collections.singletonList(addressGroup), "oob2authority");
    verify(balancerRpcExecutorPool, times(2)).getObject();
    assertEquals("oob1authority", oob1.authority());
    assertEquals("oob2authority", oob2.authority());
    // OOB channels create connections lazily.  A new call will initiate the connection.
    Metadata headers = new Metadata();
    ClientCall<String, Integer> call = oob1.newCall(method, CallOptions.DEFAULT);
    call.start(mockCallListener, headers);
    verify(mockTransportFactory).newClientTransport(eq(socketAddress), eq(new ClientTransportOptions().setAuthority("oob1authority").setUserAgent(USER_AGENT)), isA(ChannelLogger.class));
    MockClientTransportInfo transportInfo = transports.poll();
    assertNotNull(transportInfo);
    assertEquals(0, balancerRpcExecutor.numPendingTasks());
    transportInfo.listener.transportReady();
    assertEquals(1, balancerRpcExecutor.runDueTasks());
    verify(transportInfo.transport).newStream(same(method), same(headers), same(CallOptions.DEFAULT), ArgumentMatchers.<ClientStreamTracer[]>any());
    // The transport goes away
    transportInfo.listener.transportShutdown(Status.UNAVAILABLE);
    transportInfo.listener.transportTerminated();
    // A new call will trigger a new transport
    ClientCall<String, Integer> call2 = oob1.newCall(method, CallOptions.DEFAULT);
    call2.start(mockCallListener2, headers);
    ClientCall<String, Integer> call3 = oob1.newCall(method, CallOptions.DEFAULT.withWaitForReady());
    call3.start(mockCallListener3, headers);
    verify(mockTransportFactory, times(2)).newClientTransport(eq(socketAddress), eq(new ClientTransportOptions().setAuthority("oob1authority").setUserAgent(USER_AGENT)), isA(ChannelLogger.class));
    transportInfo = transports.poll();
    assertNotNull(transportInfo);
    // This transport fails
    Status transportError = Status.UNAVAILABLE.withDescription("Connection refused");
    assertEquals(0, balancerRpcExecutor.numPendingTasks());
    transportInfo.listener.transportShutdown(transportError);
    assertTrue(balancerRpcExecutor.runDueTasks() > 0);
    // Fail-fast RPC will fail, while wait-for-ready RPC will still be pending
    verify(mockCallListener2).onClose(same(transportError), any(Metadata.class));
    verify(mockCallListener3, never()).onClose(any(Status.class), any(Metadata.class));
    // Shutdown
    assertFalse(oob1.isShutdown());
    assertFalse(oob2.isShutdown());
    oob1.shutdown();
    oob2.shutdownNow();
    assertTrue(oob1.isShutdown());
    assertTrue(oob2.isShutdown());
    assertTrue(oob2.isTerminated());
    verify(balancerRpcExecutorPool).returnObject(balancerRpcExecutor.getScheduledExecutorService());
    // New RPCs will be rejected.
    assertEquals(0, balancerRpcExecutor.numPendingTasks());
    ClientCall<String, Integer> call4 = oob1.newCall(method, CallOptions.DEFAULT);
    ClientCall<String, Integer> call5 = oob2.newCall(method, CallOptions.DEFAULT);
    call4.start(mockCallListener4, headers);
    call5.start(mockCallListener5, headers);
    assertTrue(balancerRpcExecutor.runDueTasks() > 0);
    verify(mockCallListener4).onClose(statusCaptor.capture(), any(Metadata.class));
    Status status4 = statusCaptor.getValue();
    assertEquals(Status.Code.UNAVAILABLE, status4.getCode());
    verify(mockCallListener5).onClose(statusCaptor.capture(), any(Metadata.class));
    Status status5 = statusCaptor.getValue();
    assertEquals(Status.Code.UNAVAILABLE, status5.getCode());
    // The pending RPC will still be pending
    verify(mockCallListener3, never()).onClose(any(Status.class), any(Metadata.class));
    // This will shutdownNow() the delayed transport, terminating the pending RPC
    assertEquals(0, balancerRpcExecutor.numPendingTasks());
    oob1.shutdownNow();
    assertTrue(balancerRpcExecutor.runDueTasks() > 0);
    verify(mockCallListener3).onClose(any(Status.class), any(Metadata.class));
    // Shut down the channel, and it will not terminated because OOB channel has not.
    channel.shutdown();
    assertFalse(channel.isTerminated());
    // Delayed transport has already terminated.  Terminating the transport terminates the
    // subchannel, which in turn terimates the OOB channel, which terminates the channel.
    assertFalse(oob1.isTerminated());
    verify(balancerRpcExecutorPool).returnObject(balancerRpcExecutor.getScheduledExecutorService());
    transportInfo.listener.transportTerminated();
    assertTrue(oob1.isTerminated());
    assertTrue(channel.isTerminated());
    verify(balancerRpcExecutorPool, times(2)).returnObject(balancerRpcExecutor.getScheduledExecutorService());
}

Example 90 with ManagedChannel

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

the class ManagedChannelImplTest method oobChannelHasNoChannelCallCredentials.

@Test
public void oobChannelHasNoChannelCallCredentials() {
    Metadata.Key<String> metadataKey = Metadata.Key.of("token", Metadata.ASCII_STRING_MARSHALLER);
    String channelCredValue = "channel-provided call cred";
    channelBuilder = new ManagedChannelImplBuilder(TARGET, InsecureChannelCredentials.create(), new FakeCallCredentials(metadataKey, channelCredValue), new UnsupportedClientTransportFactoryBuilder(), new FixedPortProvider(DEFAULT_PORT));
    channelBuilder.disableRetry();
    configureBuilder(channelBuilder);
    createChannel();
    // Verify that the normal channel has call creds, to validate configuration
    Subchannel subchannel = createSubchannelSafely(helper, addressGroup, Attributes.EMPTY, subchannelStateListener);
    requestConnectionSafely(helper, subchannel);
    MockClientTransportInfo transportInfo = transports.poll();
    assertNotNull(transportInfo);
    transportInfo.listener.transportReady();
    when(mockPicker.pickSubchannel(any(PickSubchannelArgs.class))).thenReturn(PickResult.withSubchannel(subchannel));
    updateBalancingStateSafely(helper, READY, mockPicker);
    String callCredValue = "per-RPC call cred";
    CallOptions callOptions = CallOptions.DEFAULT.withCallCredentials(new FakeCallCredentials(metadataKey, callCredValue));
    Metadata headers = new Metadata();
    ClientCall<String, Integer> call = channel.newCall(method, callOptions);
    call.start(mockCallListener, headers);
    verify(transportInfo.transport).newStream(same(method), same(headers), same(callOptions), ArgumentMatchers.<ClientStreamTracer[]>any());
    assertThat(headers.getAll(metadataKey)).containsExactly(channelCredValue, callCredValue).inOrder();
    // Verify that the oob channel does not
    ManagedChannel oob = helper.createOobChannel(Collections.singletonList(addressGroup), "oobauthority");
    headers = new Metadata();
    call = oob.newCall(method, callOptions);
    call.start(mockCallListener2, headers);
    transportInfo = transports.poll();
    assertNotNull(transportInfo);
    transportInfo.listener.transportReady();
    balancerRpcExecutor.runDueTasks();
    verify(transportInfo.transport).newStream(same(method), same(headers), same(callOptions), ArgumentMatchers.<ClientStreamTracer[]>any());
    assertThat(headers.getAll(metadataKey)).containsExactly(callCredValue);
    oob.shutdownNow();
    // Verify that resolving oob channel does not
    oob = helper.createResolvingOobChannelBuilder("oobauthority").nameResolverFactory(new FakeNameResolverFactory.Builder(URI.create("oobauthority")).build()).defaultLoadBalancingPolicy(MOCK_POLICY_NAME).idleTimeout(ManagedChannelImplBuilder.IDLE_MODE_MAX_TIMEOUT_DAYS, TimeUnit.DAYS).disableRetry().build();
    oob.getState(true);
    ArgumentCaptor<Helper> helperCaptor = ArgumentCaptor.forClass(Helper.class);
    verify(mockLoadBalancerProvider, times(2)).newLoadBalancer(helperCaptor.capture());
    Helper oobHelper = helperCaptor.getValue();
    subchannel = createSubchannelSafely(oobHelper, addressGroup, Attributes.EMPTY, subchannelStateListener);
    requestConnectionSafely(oobHelper, subchannel);
    transportInfo = transports.poll();
    assertNotNull(transportInfo);
    transportInfo.listener.transportReady();
    SubchannelPicker mockPicker2 = mock(SubchannelPicker.class);
    when(mockPicker2.pickSubchannel(any(PickSubchannelArgs.class))).thenReturn(PickResult.withSubchannel(subchannel));
    updateBalancingStateSafely(oobHelper, READY, mockPicker2);
    headers = new Metadata();
    call = oob.newCall(method, callOptions);
    call.start(mockCallListener2, headers);
    // CallOptions may contain StreamTracerFactory for census that is added by default.
    verify(transportInfo.transport).newStream(same(method), same(headers), any(CallOptions.class), ArgumentMatchers.<ClientStreamTracer[]>any());
    assertThat(headers.getAll(metadataKey)).containsExactly(callCredValue);
    oob.shutdownNow();
}