InternalSubchannel(List<EquivalentAddressGroup> addressGroups, String authority, String userAgent,
    BackoffPolicy.Provider backoffPolicyProvider,
    ClientTransportFactory transportFactory, ScheduledExecutorService scheduledExecutor,
    Supplier<Stopwatch> stopwatchSupplier, SynchronizationContext syncContext, Callback callback,
    InternalChannelz channelz, CallTracer callsTracer, ChannelTracer channelTracer,
    InternalLogId logId, TimeProvider timeProvider) {
  Preconditions.checkNotNull(addressGroups, "addressGroups");
  Preconditions.checkArgument(!addressGroups.isEmpty(), "addressGroups is empty");
  checkListHasNoNulls(addressGroups, "addressGroups contains null entry");
  this.addressIndex = new Index(
      Collections.unmodifiableList(new ArrayList<>(addressGroups)));
  this.authority = authority;
  this.userAgent = userAgent;
  this.backoffPolicyProvider = backoffPolicyProvider;
  this.transportFactory = transportFactory;
  this.scheduledExecutor = scheduledExecutor;
  this.connectingTimer = stopwatchSupplier.get();
  this.syncContext = syncContext;
  this.callback = callback;
  this.channelz = channelz;
  this.callsTracer = callsTracer;
  this.channelTracer = Preconditions.checkNotNull(channelTracer, "channelTracer");
  this.logId = Preconditions.checkNotNull(logId, "logId");
  this.channelLogger = new ChannelLoggerImpl(channelTracer, timeProvider);
}
 

XdsClientImpl(
    String targetName,
    List<ServerInfo> servers,  // list of management servers
    XdsChannelFactory channelFactory,
    Node node,
    SynchronizationContext syncContext,
    ScheduledExecutorService timeService,
    BackoffPolicy.Provider backoffPolicyProvider,
    Supplier<Stopwatch> stopwatchSupplier) {
  this.targetName = checkNotNull(targetName, "targetName");
  this.channel =
      checkNotNull(channelFactory, "channelFactory")
          .createChannel(checkNotNull(servers, "servers"));
  this.node = checkNotNull(node, "node");
  this.syncContext = checkNotNull(syncContext, "syncContext");
  this.timeService = checkNotNull(timeService, "timeService");
  this.backoffPolicyProvider = checkNotNull(backoffPolicyProvider, "backoffPolicyProvider");
  this.stopwatchSupplier = checkNotNull(stopwatchSupplier, "stopwatch");
  adsStreamRetryStopwatch = stopwatchSupplier.get();
  logId = InternalLogId.allocate("xds-client", targetName);
  logger = XdsLogger.withLogId(logId);
  logger.log(XdsLogLevel.INFO, "Created");
}
 

HealthCheckState(
    HelperImpl helperImpl,
    LoadBalancer delegate, SynchronizationContext syncContext,
    ScheduledExecutorService timerService) {
  this.helperImpl = checkNotNull(helperImpl, "helperImpl");
  this.delegate = checkNotNull(delegate, "delegate");
  this.syncContext = checkNotNull(syncContext, "syncContext");
  this.timerService = checkNotNull(timerService, "timerService");
}
 

OobChannel(
    String authority, ObjectPool<? extends Executor> executorPool,
    ScheduledExecutorService deadlineCancellationExecutor, SynchronizationContext syncContext,
    CallTracer callsTracer, ChannelTracer channelTracer, InternalChannelz channelz,
    TimeProvider timeProvider) {
  this.authority = checkNotNull(authority, "authority");
  this.executorPool = checkNotNull(executorPool, "executorPool");
  this.executor = checkNotNull(executorPool.getObject(), "executor");
  this.deadlineCancellationExecutor = checkNotNull(
      deadlineCancellationExecutor, "deadlineCancellationExecutor");
  this.delayedTransport = new DelayedClientTransport(executor, syncContext);
  this.channelz = Preconditions.checkNotNull(channelz);
  this.delayedTransport.start(new ManagedClientTransport.Listener() {
      @Override
      public void transportShutdown(Status s) {
        // Don't care
      }

      @Override
      public void transportTerminated() {
        subchannelImpl.shutdown();
      }

      @Override
      public void transportReady() {
        // Don't care
      }

      @Override
      public void transportInUse(boolean inUse) {
        // Don't care
      }
    });
  this.channelCallsTracer = callsTracer;
  this.channelTracer = checkNotNull(channelTracer, "channelTracer");
  this.timeProvider = checkNotNull(timeProvider, "timeProvider");
}
 

LoadReportClient(
    InternalLogId logId,
    String targetName,
    ManagedChannel channel,
    Node node,
    SynchronizationContext syncContext,
    ScheduledExecutorService scheduledExecutorService,
    BackoffPolicy.Provider backoffPolicyProvider,
    Supplier<Stopwatch> stopwatchSupplier) {
  this.channel = checkNotNull(channel, "channel");
  this.syncContext = checkNotNull(syncContext, "syncContext");
  this.timerService = checkNotNull(scheduledExecutorService, "timeService");
  this.backoffPolicyProvider = checkNotNull(backoffPolicyProvider, "backoffPolicyProvider");
  this.stopwatchSupplier = checkNotNull(stopwatchSupplier, "stopwatchSupplier");
  this.retryStopwatch = stopwatchSupplier.get();
  checkNotNull(targetName, "targetName");
  checkNotNull(node, "node");
  Struct metadata =
      node.getMetadata()
          .toBuilder()
          .putFields(
              TARGET_NAME_METADATA_KEY,
              Value.newBuilder().setStringValue(targetName).build())
          .build();
  this.node = node.toBuilder().setMetadata(metadata).build();
  String logPrefix = checkNotNull(logId, "logId").toString().concat("-lrs-client");
  logger = XdsLogger.withPrefix(logPrefix);
}
 

OrcaReportingState(
    OrcaReportingHelper orcaHelper,
    SynchronizationContext syncContext,
    ScheduledExecutorService timeService) {
  this.orcaHelper = checkNotNull(orcaHelper, "orcaHelper");
  this.syncContext = checkNotNull(syncContext, "syncContext");
  this.timeService = checkNotNull(timeService, "timeService");
}
 

HealthCheckState(
    HelperImpl helperImpl,
    Subchannel subchannel, SynchronizationContext syncContext,
    ScheduledExecutorService timerService) {
  this.helperImpl = checkNotNull(helperImpl, "helperImpl");
  this.subchannel = checkNotNull(subchannel, "subchannel");
  this.subchannelLogger = checkNotNull(subchannel.getChannelLogger(), "subchannelLogger");
  this.syncContext = checkNotNull(syncContext, "syncContext");
  this.timerService = checkNotNull(timerService, "timerService");
}
 

InternalSubchannel(List<EquivalentAddressGroup> addressGroups, String authority, String userAgent,
    BackoffPolicy.Provider backoffPolicyProvider,
    ClientTransportFactory transportFactory, ScheduledExecutorService scheduledExecutor,
    Supplier<Stopwatch> stopwatchSupplier, SynchronizationContext syncContext, Callback callback,
    InternalChannelz channelz, CallTracer callsTracer, ChannelTracer channelTracer,
    InternalLogId logId, ChannelLogger channelLogger) {
  Preconditions.checkNotNull(addressGroups, "addressGroups");
  Preconditions.checkArgument(!addressGroups.isEmpty(), "addressGroups is empty");
  checkListHasNoNulls(addressGroups, "addressGroups contains null entry");
  List<EquivalentAddressGroup> unmodifiableAddressGroups =
      Collections.unmodifiableList(new ArrayList<>(addressGroups));
  this.addressGroups = unmodifiableAddressGroups;
  this.addressIndex = new Index(unmodifiableAddressGroups);
  this.authority = authority;
  this.userAgent = userAgent;
  this.backoffPolicyProvider = backoffPolicyProvider;
  this.transportFactory = transportFactory;
  this.scheduledExecutor = scheduledExecutor;
  this.connectingTimer = stopwatchSupplier.get();
  this.syncContext = syncContext;
  this.callback = callback;
  this.channelz = channelz;
  this.callsTracer = callsTracer;
  this.channelTracer = Preconditions.checkNotNull(channelTracer, "channelTracer");
  this.logId = Preconditions.checkNotNull(logId, "logId");
  this.channelLogger = Preconditions.checkNotNull(channelLogger, "channelLogger");
}
 

OobChannel(
    String authority, ObjectPool<? extends Executor> executorPool,
    ScheduledExecutorService deadlineCancellationExecutor, SynchronizationContext syncContext,
    CallTracer callsTracer, ChannelTracer channelTracer, InternalChannelz channelz,
    TimeProvider timeProvider) {
  this.authority = checkNotNull(authority, "authority");
  this.logId = InternalLogId.allocate(getClass(), authority);
  this.executorPool = checkNotNull(executorPool, "executorPool");
  this.executor = checkNotNull(executorPool.getObject(), "executor");
  this.deadlineCancellationExecutor = checkNotNull(
      deadlineCancellationExecutor, "deadlineCancellationExecutor");
  this.delayedTransport = new DelayedClientTransport(executor, syncContext);
  this.channelz = Preconditions.checkNotNull(channelz);
  this.delayedTransport.start(new ManagedClientTransport.Listener() {
      @Override
      public void transportShutdown(Status s) {
        // Don't care
      }

      @Override
      public void transportTerminated() {
        subchannelImpl.shutdown();
      }

      @Override
      public void transportReady() {
        // Don't care
      }

      @Override
      public void transportInUse(boolean inUse) {
        // Don't care
      }
    });
  this.channelCallsTracer = callsTracer;
  this.channelTracer = checkNotNull(channelTracer, "channelTracer");
  this.timeProvider = checkNotNull(timeProvider, "timeProvider");
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return delegate().getSynchronizationContext();
}
 

@Test
public void channelTracing_lbPolicyChanged() {
  final FakeClock clock = new FakeClock();
  List<EquivalentAddressGroup> servers =
      Collections.singletonList(
          new EquivalentAddressGroup(new SocketAddress(){}, Attributes.EMPTY));
  Helper helper = new TestHelper() {
    @Override
    public Subchannel createSubchannel(List<EquivalentAddressGroup> addrs, Attributes attrs) {
      return new TestSubchannel(addrs, attrs);
    }

    @Override
    public ManagedChannel createOobChannel(EquivalentAddressGroup eag, String authority) {
      return mock(ManagedChannel.class, RETURNS_DEEP_STUBS);
    }

    @Override
    public String getAuthority() {
      return "fake_authority";
    }

    @Override
    public void updateBalancingState(ConnectivityState newState, SubchannelPicker newPicker) {
      // noop
    }

    @Override
    public SynchronizationContext getSynchronizationContext() {
      return new SynchronizationContext(
          new Thread.UncaughtExceptionHandler() {
            @Override
            public void uncaughtException(Thread t, Throwable e) {
              throw new AssertionError(e);
            }
          });
    }

    @Override
    public ScheduledExecutorService getScheduledExecutorService() {
      return clock.getScheduledExecutorService();
    }
  };

  LoadBalancer lb = new AutoConfiguredLoadBalancerFactory().newLoadBalancer(helper);
  lb.handleResolvedAddressGroups(servers, Attributes.EMPTY);

  verifyNoMoreInteractions(channelLogger);

  Map<String, Object> serviceConfig = new HashMap<String, Object>();
  serviceConfig.put("loadBalancingPolicy", "round_robin");
  lb.handleResolvedAddressGroups(servers,
      Attributes.newBuilder()
          .set(GrpcAttributes.NAME_RESOLVER_SERVICE_CONFIG, serviceConfig).build());

  verify(channelLogger).log(
      eq(ChannelLogLevel.INFO),
      eq("Load balancer changed from {0} to {1}"),
      eq("PickFirstLoadBalancer"), eq("RoundRobinLoadBalancer"));
  verifyNoMoreInteractions(channelLogger);

  serviceConfig.put("loadBalancingPolicy", "round_robin");
  lb.handleResolvedAddressGroups(servers,
      Attributes.newBuilder()
          .set(GrpcAttributes.NAME_RESOLVER_SERVICE_CONFIG, serviceConfig).build());
  verifyNoMoreInteractions(channelLogger);

  servers = Collections.singletonList(new EquivalentAddressGroup(
      new SocketAddress(){},
      Attributes.newBuilder().set(GrpcAttributes.ATTR_LB_ADDR_AUTHORITY, "ok").build()));
  lb.handleResolvedAddressGroups(servers, Attributes.EMPTY);

  verify(channelLogger).log(
      eq(ChannelLogLevel.INFO),
      eq("Load balancer changed from {0} to {1}"),
      eq("RoundRobinLoadBalancer"), eq("GrpclbLoadBalancer"));

  verifyNoMoreInteractions(channelLogger);
}
 

IdleSubchannelEntry(Subchannel subchannel, SynchronizationContext syncContext) {
  this.subchannel = checkNotNull(subchannel, "subchannel");
  this.syncContext = checkNotNull(syncContext, "syncContext");
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return syncContext;
}
 

@Override
public SynchronizationContext getSynchronizationContext() {
  return delegate().getSynchronizationContext();
}
 

/**
 * Creates a new delayed transport.
 *
 * @param defaultAppExecutor pending streams will create real streams and run bufferred operations
 *        in an application executor, which will be this executor, unless there is on provided in
 *        {@link CallOptions}.
 * @param syncContext all listener callbacks of the delayed transport will be run from this
 *        SynchronizationContext.
 */
DelayedClientTransport(Executor defaultAppExecutor, SynchronizationContext syncContext) {
  this.defaultAppExecutor = defaultAppExecutor;
  this.syncContext = syncContext;
}
 

/**
 * Creates a new delayed transport.
 *
 * @param defaultAppExecutor pending streams will create real streams and run bufferred operations
 *        in an application executor, which will be this executor, unless there is on provided in
 *        {@link CallOptions}.
 * @param syncContext all listener callbacks of the delayed transport will be run from this
 *        SynchronizationContext.
 */
DelayedClientTransport(Executor defaultAppExecutor, SynchronizationContext syncContext) {
  this.defaultAppExecutor = defaultAppExecutor;
  this.syncContext = syncContext;
}