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

Example 16 with ManagedChannel

use of io.grpc.ManagedChannel in project google-cloud-java by GoogleCloudPlatform.

the class SpannerOptions method createChannel.

private static ManagedChannel createChannel(String rootUrl, RpcChannelFactory factory) {
    URL url;
    try {
        url = new URL(rootUrl);
    } catch (MalformedURLException e) {
        throw new IllegalArgumentException("Invalid host: " + rootUrl, e);
    }
    ManagedChannel channel = factory.newChannel(url.getHost(), url.getPort() > 0 ? url.getPort() : url.getDefaultPort());
    return channel;
}

Example 17 with ManagedChannel

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

the class GrpclbLoadBalancerTest method switchPolicy.

@SuppressWarnings("unchecked")
@Test
public void switchPolicy() {
    // Go to GRPCLB first
    List<ResolvedServerInfoGroup> grpclbResolutionList = createResolvedServerInfoGroupList(true, false, true);
    Attributes grpclbResolutionAttrs = Attributes.newBuilder().set(GrpclbConstants.ATTR_LB_POLICY, LbPolicy.GRPCLB).build();
    deliverResolvedAddresses(grpclbResolutionList, grpclbResolutionAttrs);
    assertSame(LbPolicy.GRPCLB, balancer.getLbPolicy());
    assertNull(balancer.getDelegate());
    verify(helper).createOobChannel(eq(grpclbResolutionList.get(0).toEquivalentAddressGroup()), eq(lbAuthority(0)));
    assertEquals(1, fakeOobChannels.size());
    ManagedChannel oobChannel = fakeOobChannels.poll();
    verify(mockLbService).balanceLoad(lbResponseObserverCaptor.capture());
    // Switch to PICK_FIRST
    List<ResolvedServerInfoGroup> pickFirstResolutionList = createResolvedServerInfoGroupList(true, false, true);
    Attributes pickFirstResolutionAttrs = Attributes.newBuilder().set(GrpclbConstants.ATTR_LB_POLICY, LbPolicy.PICK_FIRST).build();
    verify(pickFirstBalancerFactory, never()).newLoadBalancer(any(Helper.class));
    assertEquals(1, lbRequestObservers.size());
    StreamObserver<LoadBalanceRequest> lbRequestObserver = lbRequestObservers.poll();
    verify(lbRequestObserver, never()).onCompleted();
    assertFalse(oobChannel.isShutdown());
    deliverResolvedAddresses(pickFirstResolutionList, pickFirstResolutionAttrs);
    verify(pickFirstBalancerFactory).newLoadBalancer(same(helper));
    // Only non-LB addresses are passed to the delegate
    verify(pickFirstBalancer).handleResolvedAddresses(eq(Arrays.asList(pickFirstResolutionList.get(1))), same(pickFirstResolutionAttrs));
    assertSame(LbPolicy.PICK_FIRST, balancer.getLbPolicy());
    assertSame(pickFirstBalancer, balancer.getDelegate());
    // GRPCLB connection is closed
    verify(lbRequestObserver).onCompleted();
    assertTrue(oobChannel.isShutdown());
    // Switch to ROUND_ROBIN
    List<ResolvedServerInfoGroup> roundRobinResolutionList = createResolvedServerInfoGroupList(true, false, false);
    Attributes roundRobinResolutionAttrs = Attributes.newBuilder().set(GrpclbConstants.ATTR_LB_POLICY, LbPolicy.ROUND_ROBIN).build();
    verify(roundRobinBalancerFactory, never()).newLoadBalancer(any(Helper.class));
    deliverResolvedAddresses(roundRobinResolutionList, roundRobinResolutionAttrs);
    verify(roundRobinBalancerFactory).newLoadBalancer(same(helper));
    // Only non-LB addresses are passed to the delegate
    verify(roundRobinBalancer).handleResolvedAddresses(eq(roundRobinResolutionList.subList(1, 3)), same(roundRobinResolutionAttrs));
    assertSame(LbPolicy.ROUND_ROBIN, balancer.getLbPolicy());
    assertSame(roundRobinBalancer, balancer.getDelegate());
    // Special case: if all addresses are loadbalancers, use GRPCLB no matter what the NameResolver
    // says.
    grpclbResolutionList = createResolvedServerInfoGroupList(true, true, true);
    grpclbResolutionAttrs = Attributes.newBuilder().set(GrpclbConstants.ATTR_LB_POLICY, LbPolicy.PICK_FIRST).build();
    deliverResolvedAddresses(grpclbResolutionList, grpclbResolutionAttrs);
    assertSame(LbPolicy.GRPCLB, balancer.getLbPolicy());
    assertNull(balancer.getDelegate());
    verify(helper, times(2)).createOobChannel(eq(grpclbResolutionList.get(0).toEquivalentAddressGroup()), eq(lbAuthority(0)));
    verify(helper, times(2)).createOobChannel(any(EquivalentAddressGroup.class), any(String.class));
    assertEquals(1, fakeOobChannels.size());
    oobChannel = fakeOobChannels.poll();
    verify(mockLbService, times(2)).balanceLoad(lbResponseObserverCaptor.capture());
    // Special case: PICK_FIRST is the default
    pickFirstResolutionList = createResolvedServerInfoGroupList(true, false, false);
    pickFirstResolutionAttrs = Attributes.EMPTY;
    verify(pickFirstBalancerFactory).newLoadBalancer(any(Helper.class));
    assertFalse(oobChannel.isShutdown());
    deliverResolvedAddresses(pickFirstResolutionList, pickFirstResolutionAttrs);
    verify(pickFirstBalancerFactory, times(2)).newLoadBalancer(same(helper));
    // Only non-LB addresses are passed to the delegate
    verify(pickFirstBalancer).handleResolvedAddresses(eq(pickFirstResolutionList.subList(1, 3)), same(pickFirstResolutionAttrs));
    assertSame(LbPolicy.PICK_FIRST, balancer.getLbPolicy());
    assertSame(pickFirstBalancer, balancer.getDelegate());
    // GRPCLB connection is closed
    assertTrue(oobChannel.isShutdown());
}

Example 18 with ManagedChannel

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

the class GrpclbLoadBalancerTest method tearDown.

@After
public void tearDown() {
    try {
        if (balancer != null) {
            channelExecutor.execute(new Runnable() {

                @Override
                public void run() {
                    balancer.shutdown();
                }
            });
        }
        for (ManagedChannel channel : oobChannelTracker) {
            assertTrue(channel + " is shutdown", channel.isShutdown());
            // balancer should have closed the LB stream, terminating the OOB channel.
            assertTrue(channel + " is terminated", channel.isTerminated());
        }
        for (Subchannel subchannel : subchannelTracker) {
            verify(subchannel).shutdown();
        }
    } finally {
        if (fakeLbServer != null) {
            fakeLbServer.shutdownNow();
        }
    }
}

Example 19 with ManagedChannel

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

the class GrpclbLoadBalancerTest method grpclbWorking.

@Test
public void grpclbWorking() {
    InOrder inOrder = inOrder(helper);
    List<ResolvedServerInfoGroup> grpclbResolutionList = createResolvedServerInfoGroupList(true, true);
    Attributes grpclbResolutionAttrs = Attributes.newBuilder().set(GrpclbConstants.ATTR_LB_POLICY, LbPolicy.GRPCLB).build();
    deliverResolvedAddresses(grpclbResolutionList, grpclbResolutionAttrs);
    assertSame(LbPolicy.GRPCLB, balancer.getLbPolicy());
    assertNull(balancer.getDelegate());
    verify(helper).createOobChannel(eq(grpclbResolutionList.get(0).toEquivalentAddressGroup()), eq(lbAuthority(0)));
    assertEquals(1, fakeOobChannels.size());
    ManagedChannel oobChannel = fakeOobChannels.poll();
    verify(mockLbService).balanceLoad(lbResponseObserverCaptor.capture());
    StreamObserver<LoadBalanceResponse> lbResponseObserver = lbResponseObserverCaptor.getValue();
    // Simulate receiving LB response
    List<ServerEntry> backends1 = Arrays.asList(new ServerEntry("127.0.0.1", 2000, "token0001"), new ServerEntry("127.0.0.1", 2010, "token0002"));
    inOrder.verify(helper, never()).updatePicker(any(SubchannelPicker.class));
    lbResponseObserver.onNext(buildInitialResponse());
    lbResponseObserver.onNext(buildLbResponse(backends1));
    inOrder.verify(helper).createSubchannel(eq(new EquivalentAddressGroup(backends1.get(0).addr)), any(Attributes.class));
    inOrder.verify(helper).createSubchannel(eq(new EquivalentAddressGroup(backends1.get(1).addr)), any(Attributes.class));
    assertEquals(2, mockSubchannels.size());
    Subchannel subchannel1 = mockSubchannels.poll();
    Subchannel subchannel2 = mockSubchannels.poll();
    verify(subchannel1).requestConnection();
    verify(subchannel2).requestConnection();
    assertEquals(new EquivalentAddressGroup(backends1.get(0).addr), subchannel1.getAddresses());
    assertEquals(new EquivalentAddressGroup(backends1.get(1).addr), subchannel2.getAddresses());
    // Before any subchannel is READY, a buffer picker will be provided
    inOrder.verify(helper).updatePicker(same(GrpclbLoadBalancer.BUFFER_PICKER));
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forNonError(CONNECTING));
    deliverSubchannelState(subchannel2, ConnectivityStateInfo.forNonError(CONNECTING));
    inOrder.verify(helper, times(2)).updatePicker(same(GrpclbLoadBalancer.BUFFER_PICKER));
    // Let subchannels be connected
    deliverSubchannelState(subchannel2, ConnectivityStateInfo.forNonError(READY));
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker1 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker1.list).containsExactly(new RoundRobinEntry(subchannel2, "token0002"));
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forNonError(READY));
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker2 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker2.list).containsExactly(new RoundRobinEntry(subchannel1, "token0001"), new RoundRobinEntry(subchannel2, "token0002")).inOrder();
    // Disconnected subchannels
    verify(subchannel1).requestConnection();
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forNonError(IDLE));
    verify(subchannel1, times(2)).requestConnection();
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker3 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker3.list).containsExactly(new RoundRobinEntry(subchannel2, "token0002"));
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forNonError(CONNECTING));
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker4 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker4.list).containsExactly(new RoundRobinEntry(subchannel2, "token0002"));
    // As long as there is at least one READY subchannel, round robin will work.
    Status error1 = Status.UNAVAILABLE.withDescription("error1");
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forTransientFailure(error1));
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker5 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker5.list).containsExactly(new RoundRobinEntry(subchannel2, "token0002"));
    // If no subchannel is READY, will propagate an error from an arbitrary subchannel (but here
    // only subchannel1 has error).
    verify(subchannel2).requestConnection();
    deliverSubchannelState(subchannel2, ConnectivityStateInfo.forNonError(IDLE));
    verify(subchannel2, times(2)).requestConnection();
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    ErrorPicker picker6 = (ErrorPicker) pickerCaptor.getValue();
    assertNull(picker6.result.getSubchannel());
    assertSame(error1, picker6.result.getStatus());
    // Update backends, with a drop entry
    List<ServerEntry> backends2 = Arrays.asList(// New address
    new ServerEntry("127.0.0.1", 2030, "token0003"), // drop
    null, // Existing address with token changed
    new ServerEntry("127.0.0.1", 2010, "token0004"), // New address appearing second time
    new ServerEntry("127.0.0.1", 2030, "token0005"));
    verify(subchannel1, never()).shutdown();
    lbResponseObserver.onNext(buildLbResponse(backends2));
    // not in backends2, closed
    verify(subchannel1).shutdown();
    // backends2[2], will be kept
    verify(subchannel2, never()).shutdown();
    inOrder.verify(helper, never()).createSubchannel(eq(new EquivalentAddressGroup(backends2.get(2).addr)), any(Attributes.class));
    inOrder.verify(helper).createSubchannel(eq(new EquivalentAddressGroup(backends2.get(0).addr)), any(Attributes.class));
    assertEquals(1, mockSubchannels.size());
    Subchannel subchannel3 = mockSubchannels.poll();
    verify(subchannel3).requestConnection();
    assertEquals(new EquivalentAddressGroup(backends2.get(0).addr), subchannel3.getAddresses());
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker7 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker7.list).containsExactly(GrpclbLoadBalancer.DROP_ENTRY);
    // State updates on obsolete subchannel1 will have no effect
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forNonError(READY));
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forTransientFailure(Status.UNAVAILABLE));
    deliverSubchannelState(subchannel1, ConnectivityStateInfo.forNonError(SHUTDOWN));
    inOrder.verifyNoMoreInteractions();
    deliverSubchannelState(subchannel3, ConnectivityStateInfo.forNonError(READY));
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker8 = (RoundRobinPicker) pickerCaptor.getValue();
    // subchannel2 is still IDLE, thus not in the active list
    assertThat(picker8.list).containsExactly(new RoundRobinEntry(subchannel3, "token0003"), GrpclbLoadBalancer.DROP_ENTRY, new RoundRobinEntry(subchannel3, "token0005")).inOrder();
    // subchannel2 becomes READY and makes it into the list
    deliverSubchannelState(subchannel2, ConnectivityStateInfo.forNonError(READY));
    inOrder.verify(helper).updatePicker(pickerCaptor.capture());
    RoundRobinPicker picker9 = (RoundRobinPicker) pickerCaptor.getValue();
    assertThat(picker9.list).containsExactly(new RoundRobinEntry(subchannel3, "token0003"), GrpclbLoadBalancer.DROP_ENTRY, new RoundRobinEntry(subchannel2, "token0004"), new RoundRobinEntry(subchannel3, "token0005")).inOrder();
    verify(subchannel3, never()).shutdown();
    assertFalse(oobChannel.isShutdown());
    assertEquals(1, lbRequestObservers.size());
    verify(lbRequestObservers.peek(), never()).onCompleted();
    verify(lbRequestObservers.peek(), never()).onError(any(Throwable.class));
}

Example 20 with ManagedChannel

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

the class Http2OkHttpTest method wrongHostNameFailHostnameVerification.

@Test(timeout = 10000)
public void wrongHostNameFailHostnameVerification() throws Exception {
    OkHttpChannelBuilder builder = OkHttpChannelBuilder.forAddress("127.0.0.1", getPort()).connectionSpec(new ConnectionSpec.Builder(OkHttpChannelBuilder.DEFAULT_CONNECTION_SPEC).cipherSuites(TestUtils.preferredTestCiphers().toArray(new String[0])).tlsVersions(ConnectionSpec.MODERN_TLS.tlsVersions().toArray(new TlsVersion[0])).build()).overrideAuthority(GrpcUtil.authorityFromHostAndPort("I.am.a.bad.hostname", getPort()));
    ManagedChannel channel = builder.sslSocketFactory(TestUtils.newSslSocketFactoryForCa(Platform.get().getProvider(), TestUtils.loadCert("ca.pem"))).build();
    TestServiceGrpc.TestServiceBlockingStub blockingStub = TestServiceGrpc.newBlockingStub(channel);
    try {
        blockingStub.emptyCall(Empty.getDefaultInstance());
        fail("The rpc should have been failed due to hostname verification");
    } catch (Throwable t) {
        Throwable cause = Throwables.getRootCause(t);
        assertTrue("Failed by unexpected exception: " + cause, cause instanceof SSLPeerUnverifiedException);
    }
    channel.shutdown();
}