Examples with ResourceResolver io.grpc.internal.DnsNameResolver.ResourceResolver used on opensource projects

Example 6 with ResourceResolver

use of io.grpc.internal.DnsNameResolver.ResourceResolver in project grpc-java by grpc.

the class DnsNameResolverTest method resolve_presentResourceResolver.

@Test
public void resolve_presentResourceResolver() throws Exception {
    DnsNameResolver.enableTxt = true;
    InetAddress backendAddr = InetAddresses.fromInteger(0x7f000001);
    AddressResolver mockAddressResolver = mock(AddressResolver.class);
    when(mockAddressResolver.resolveAddress(anyString())).thenReturn(Collections.singletonList(backendAddr));
    ResourceResolver mockResourceResolver = mock(ResourceResolver.class);
    when(mockResourceResolver.resolveTxt(anyString())).thenReturn(Collections.singletonList("grpc_config=[{\"clientLanguage\": [\"java\"], \"serviceConfig\": {}}]"));
    ServiceConfigParser serviceConfigParser = new ServiceConfigParser() {

        @Override
        public ConfigOrError parseServiceConfig(Map<String, ?> rawServiceConfig) {
            return ConfigOrError.fromConfig(rawServiceConfig);
        }
    };
    NameResolver.Args args = NameResolver.Args.newBuilder().setDefaultPort(DEFAULT_PORT).setProxyDetector(GrpcUtil.NOOP_PROXY_DETECTOR).setSynchronizationContext(syncContext).setServiceConfigParser(serviceConfigParser).build();
    String name = "foo.googleapis.com";
    DnsNameResolver resolver = newResolver(name, Stopwatch.createUnstarted(), false, args);
    resolver.setAddressResolver(mockAddressResolver);
    resolver.setResourceResolver(mockResourceResolver);
    resolver.start(mockListener);
    assertEquals(1, fakeExecutor.runDueTasks());
    verify(mockListener).onResult(resultCaptor.capture());
    ResolutionResult result = resultCaptor.getValue();
    InetSocketAddress resolvedBackendAddr = (InetSocketAddress) Iterables.getOnlyElement(Iterables.getOnlyElement(result.getAddresses()).getAddresses());
    assertThat(resolvedBackendAddr.getAddress()).isEqualTo(backendAddr);
    assertThat(result.getServiceConfig().getConfig()).isNotNull();
    verify(mockAddressResolver).resolveAddress(name);
    verify(mockResourceResolver).resolveTxt("_grpc_config." + name);
}

Example 7 with ResourceResolver

use of io.grpc.internal.DnsNameResolver.ResourceResolver in project grpc-java by grpc.

the class DnsNameResolverTest method resolve_addressFailure_neverLookUpServiceConfig.

@Test
public void resolve_addressFailure_neverLookUpServiceConfig() throws Exception {
    DnsNameResolver.enableTxt = true;
    AddressResolver mockAddressResolver = mock(AddressResolver.class);
    when(mockAddressResolver.resolveAddress(anyString())).thenThrow(new IOException("no addr"));
    String name = "foo.googleapis.com";
    ResourceResolver mockResourceResolver = mock(ResourceResolver.class);
    DnsNameResolver resolver = newResolver(name, 81);
    resolver.setAddressResolver(mockAddressResolver);
    resolver.setResourceResolver(mockResourceResolver);
    resolver.start(mockListener);
    assertEquals(1, fakeExecutor.runDueTasks());
    verify(mockListener).onError(errorCaptor.capture());
    Status errorStatus = errorCaptor.getValue();
    assertThat(errorStatus.getCode()).isEqualTo(Code.UNAVAILABLE);
    assertThat(errorStatus.getCause()).hasMessageThat().contains("no addr");
    verify(mockResourceResolver, never()).resolveTxt(anyString());
}

Example 8 with ResourceResolver

use of io.grpc.internal.DnsNameResolver.ResourceResolver in project grpc-java by grpc.

the class DnsNameResolverTest method resolve_serviceConfigMalformed_serviceConfigError.

@Test
public void resolve_serviceConfigMalformed_serviceConfigError() throws Exception {
    DnsNameResolver.enableTxt = true;
    InetAddress backendAddr = InetAddresses.fromInteger(0x7f000001);
    AddressResolver mockAddressResolver = mock(AddressResolver.class);
    when(mockAddressResolver.resolveAddress(anyString())).thenReturn(Collections.singletonList(backendAddr));
    String name = "foo.googleapis.com";
    ResourceResolver mockResourceResolver = mock(ResourceResolver.class);
    when(mockResourceResolver.resolveTxt(anyString())).thenReturn(Collections.singletonList("grpc_config=something invalid"));
    DnsNameResolver resolver = newResolver(name, 81);
    resolver.setAddressResolver(mockAddressResolver);
    resolver.setResourceResolver(mockResourceResolver);
    resolver.start(mockListener);
    assertEquals(1, fakeExecutor.runDueTasks());
    verify(mockListener).onResult(resultCaptor.capture());
    ResolutionResult result = resultCaptor.getValue();
    InetSocketAddress resolvedBackendAddr = (InetSocketAddress) Iterables.getOnlyElement(Iterables.getOnlyElement(result.getAddresses()).getAddresses());
    assertThat(resolvedBackendAddr.getAddress()).isEqualTo(backendAddr);
    verify(mockAddressResolver).resolveAddress(name);
    assertThat(result.getAttributes()).isEqualTo(Attributes.EMPTY);
    assertThat(result.getServiceConfig()).isNotNull();
    assertThat(result.getServiceConfig().getError()).isNotNull();
    verify(mockResourceResolver).resolveTxt(anyString());
}

Example 9 with ResourceResolver

use of io.grpc.internal.DnsNameResolver.ResourceResolver in project grpc-java by grpc.

the class GrpclbNameResolverTest method resolve_addressFailure_stillLookUpBalancersAndServiceConfig.

@Test
public void resolve_addressFailure_stillLookUpBalancersAndServiceConfig() throws Exception {
    InetAddress lbAddr = InetAddress.getByAddress(new byte[] { 10, 1, 0, 0 });
    int lbPort = 8080;
    // original name in SRV record
    String lbName = "foo.example.com.";
    SrvRecord srvRecord = new SrvRecord(lbName, 8080);
    AddressResolver mockAddressResolver = mock(AddressResolver.class);
    when(mockAddressResolver.resolveAddress(hostName)).thenThrow(new UnknownHostException("I really tried"));
    when(mockAddressResolver.resolveAddress(lbName)).thenReturn(Collections.singletonList(lbAddr));
    ResourceResolver mockResourceResolver = mock(ResourceResolver.class);
    when(mockResourceResolver.resolveTxt(anyString())).thenReturn(Collections.<String>emptyList());
    when(mockResourceResolver.resolveSrv(anyString())).thenReturn(Collections.singletonList(srvRecord));
    resolver.setAddressResolver(mockAddressResolver);
    resolver.setResourceResolver(mockResourceResolver);
    resolver.start(mockListener);
    assertThat(fakeClock.runDueTasks()).isEqualTo(1);
    verify(mockListener).onResult(resultCaptor.capture());
    ResolutionResult result = resultCaptor.getValue();
    assertThat(result.getAddresses()).isEmpty();
    EquivalentAddressGroup resolvedBalancerAddr = Iterables.getOnlyElement(result.getAttributes().get(GrpclbConstants.ATTR_LB_ADDRS));
    assertThat(resolvedBalancerAddr.getAttributes().get(GrpclbConstants.ATTR_LB_ADDR_AUTHORITY)).isEqualTo("foo.example.com");
    InetSocketAddress resolvedBalancerSockAddr = (InetSocketAddress) Iterables.getOnlyElement(resolvedBalancerAddr.getAddresses());
    assertThat(resolvedBalancerSockAddr.getAddress()).isEqualTo(lbAddr);
    assertThat(resolvedBalancerSockAddr.getPort()).isEqualTo(lbPort);
    assertThat(result.getServiceConfig()).isNull();
    verify(mockAddressResolver).resolveAddress(hostName);
    verify(mockResourceResolver).resolveTxt("_grpc_config." + hostName);
    verify(mockResourceResolver).resolveSrv("_grpclb._tcp." + hostName);
}

Example 10 with ResourceResolver

use of io.grpc.internal.DnsNameResolver.ResourceResolver in project grpc-java by grpc.

the class GrpclbNameResolverTest method resolveAll_balancerLookupFails_stillLookUpServiceConfig.

@Test
public void resolveAll_balancerLookupFails_stillLookUpServiceConfig() throws Exception {
    InetAddress backendAddr = InetAddress.getByAddress(new byte[] { 127, 0, 0, 0 });
    AddressResolver mockAddressResolver = mock(AddressResolver.class);
    when(mockAddressResolver.resolveAddress(hostName)).thenReturn(Collections.singletonList(backendAddr));
    ResourceResolver mockResourceResolver = mock(ResourceResolver.class);
    when(mockResourceResolver.resolveTxt(anyString())).thenReturn(Collections.<String>emptyList());
    when(mockResourceResolver.resolveSrv(anyString())).thenThrow(new Exception("something like javax.naming.NamingException"));
    resolver.setAddressResolver(mockAddressResolver);
    resolver.setResourceResolver(mockResourceResolver);
    resolver.start(mockListener);
    assertThat(fakeClock.runDueTasks()).isEqualTo(1);
    verify(mockListener).onResult(resultCaptor.capture());
    ResolutionResult result = resultCaptor.getValue();
    InetSocketAddress resolvedBackendAddr = (InetSocketAddress) Iterables.getOnlyElement(Iterables.getOnlyElement(result.getAddresses()).getAddresses());
    assertThat(resolvedBackendAddr.getAddress()).isEqualTo(backendAddr);
    assertThat(result.getAttributes().get(GrpclbConstants.ATTR_LB_ADDRS)).isNull();
    verify(mockAddressResolver).resolveAddress(hostName);
    verify(mockResourceResolver).resolveTxt("_grpc_config." + hostName);
    verify(mockResourceResolver).resolveSrv("_grpclb._tcp." + hostName);
}