@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
when(provider.get(any(CallOptions.class))).thenReturn(transport);
when(transport.newStream(
any(MethodDescriptor.class), any(Metadata.class), any(CallOptions.class)))
.thenReturn(stream);
}
@Test
public void advertisedEncodingsAreSent() {
MethodDescriptor<Void, Void> descriptor =
MethodDescriptor.create(
MethodType.UNARY,
"service/method",
new TestMarshaller<Void>(),
new TestMarshaller<Void>());
final ClientTransport transport = mock(ClientTransport.class);
final ClientStream stream = mock(ClientStream.class);
ClientTransportProvider provider =
new ClientTransportProvider() {
@Override
public ListenableFuture<ClientTransport> get(CallOptions callOptions) {
return Futures.immediateFuture(transport);
}
};
when(transport.newStream(
any(MethodDescriptor.class), any(Metadata.class), any(ClientStreamListener.class)))
.thenReturn(stream);
ClientCallImpl<Void, Void> call =
new ClientCallImpl<Void, Void>(
descriptor, executor, CallOptions.DEFAULT, provider, deadlineCancellationExecutor)
.setDecompressorRegistry(decompressorRegistry);
call.start(new TestClientCallListener<Void>(), new Metadata());
ArgumentCaptor<Metadata> metadataCaptor = ArgumentCaptor.forClass(Metadata.class);
verify(transport)
.newStream(eq(descriptor), metadataCaptor.capture(), isA(ClientStreamListener.class));
Metadata actual = metadataCaptor.getValue();
Set<String> acceptedEncodings =
ImmutableSet.copyOf(actual.getAll(GrpcUtil.MESSAGE_ACCEPT_ENCODING_KEY));
assertEquals(decompressorRegistry.getAdvertisedMessageEncodings(), acceptedEncodings);
}
@Override
public void start(final Listener<RespT> observer, Metadata headers) {
checkState(stream == null, "Already started");
checkNotNull(observer, "observer");
checkNotNull(headers, "headers");
// Create the context
final Deadline effectiveDeadline = min(callOptions.getDeadline(), parentContext.getDeadline());
if (effectiveDeadline != parentContext.getDeadline()) {
context = parentContext.withDeadline(effectiveDeadline, deadlineCancellationExecutor);
} else {
context = parentContext.withCancellation();
}
if (context.isCancelled()) {
// Context is already cancelled so no need to create a real stream, just notify the observer
// of cancellation via callback on the executor
stream = NoopClientStream.INSTANCE;
callExecutor.execute(
new ContextRunnable(context) {
@Override
public void runInContext() {
observer.onClose(statusFromCancelled(context), new Metadata());
}
});
return;
}
final String compressorName = callOptions.getCompressor();
Compressor compressor = null;
if (compressorName != null) {
compressor = compressorRegistry.lookupCompressor(compressorName);
if (compressor == null) {
stream = NoopClientStream.INSTANCE;
callExecutor.execute(
new ContextRunnable(context) {
@Override
public void runInContext() {
observer.onClose(
Status.INTERNAL.withDescription(
String.format("Unable to find compressor by name %s", compressorName)),
new Metadata());
}
});
return;
}
} else {
compressor = Codec.Identity.NONE;
}
prepareHeaders(headers, callOptions, userAgent, decompressorRegistry, compressor);
final boolean deadlineExceeded = effectiveDeadline != null && effectiveDeadline.isExpired();
if (!deadlineExceeded) {
updateTimeoutHeaders(
effectiveDeadline, callOptions.getDeadline(), parentContext.getDeadline(), headers);
ClientTransport transport = clientTransportProvider.get(callOptions);
stream = transport.newStream(method, headers);
} else {
stream = new FailingClientStream(DEADLINE_EXCEEDED);
}
if (callOptions.getAuthority() != null) {
stream.setAuthority(callOptions.getAuthority());
}
stream.setCompressor(compressor);
stream.start(new ClientStreamListenerImpl(observer));
if (compressor != Codec.Identity.NONE) {
stream.setMessageCompression(true);
}
// Delay any sources of cancellation after start(), because most of the transports are broken if
// they receive cancel before start. Issue #1343 has more details
// Propagate later Context cancellation to the remote side.
context.addListener(this, directExecutor());
if (contextListenerShouldBeRemoved) {
// Race detected! ClientStreamListener.closed may have been called before
// deadlineCancellationFuture was set, thereby preventing the future from being cancelled.
// Go ahead and cancel again, just to be sure it was cancelled.
context.removeListener(this);
}
}
@Test
public void shutdownBeforeTransportCreatedWithPendingStream() throws Exception {
SocketAddress addr = mock(SocketAddress.class);
createTransportSet(addr);
// First transport is created immediately
ClientTransport pick = transportSet.obtainActiveTransport();
assertEquals(ConnectivityState.CONNECTING, transportSet.getState(false));
verify(mockTransportFactory).newClientTransport(addr, AUTHORITY, USER_AGENT);
assertNotNull(pick);
// Fail this one
MockClientTransportInfo transportInfo = transports.poll();
transportInfo.listener.transportShutdown(Status.UNAVAILABLE);
assertEquals(ConnectivityState.TRANSIENT_FAILURE, transportSet.getState(false));
transportInfo.listener.transportTerminated();
// Second transport will wait for back-off
pick = transportSet.obtainActiveTransport();
assertTrue(pick instanceof DelayedClientTransport);
// Start a stream, which will be pending in the delayed transport
ClientStream pendingStream =
pick.newStream(method, headers, waitForReadyCallOptions, statsTraceCtx);
pendingStream.start(mockStreamListener);
// Shut down TransportSet before the transport is created. Further call to
// obtainActiveTransport() gets failing transports
assertEquals(ConnectivityState.TRANSIENT_FAILURE, transportSet.getState(false));
transportSet.shutdown();
assertEquals(ConnectivityState.SHUTDOWN, transportSet.getState(false));
pick = transportSet.obtainActiveTransport();
assertNotNull(pick);
assertTrue(pick instanceof FailingClientTransport);
verify(mockTransportFactory).newClientTransport(addr, AUTHORITY, USER_AGENT);
// Reconnect will eventually happen, even though TransportSet has been shut down
fakeClock.forwardMillis(10);
assertEquals(ConnectivityState.SHUTDOWN, transportSet.getState(false));
verify(mockTransportFactory, times(2)).newClientTransport(addr, AUTHORITY, USER_AGENT);
// The pending stream will be started on this newly started transport after it's ready.
// The transport is shut down by TransportSet right after the stream is created.
transportInfo = transports.poll();
verify(transportInfo.transport, times(0)).shutdown();
assertEquals(0, fakeExecutor.numPendingTasks());
transportInfo.listener.transportReady();
assertEquals(ConnectivityState.SHUTDOWN, transportSet.getState(false));
verify(transportInfo.transport, times(0))
.newStream(any(MethodDescriptor.class), any(Metadata.class));
assertEquals(1, fakeExecutor.runDueTasks());
verify(transportInfo.transport)
.newStream(
same(method),
same(headers),
same(waitForReadyCallOptions),
any(StatsTraceContext.class));
verify(transportInfo.transport).shutdown();
transportInfo.listener.transportShutdown(Status.UNAVAILABLE);
assertEquals(ConnectivityState.SHUTDOWN, transportSet.getState(false));
verify(mockTransportSetCallback, never()).onTerminated(any(TransportSet.class));
// Terminating the transport will let TransportSet to be terminated.
transportInfo.listener.transportTerminated();
assertEquals(ConnectivityState.SHUTDOWN, transportSet.getState(false));
verify(mockTransportSetCallback).onTerminated(transportSet);
// No more transports will be created.
fakeClock.forwardMillis(10000);
assertEquals(ConnectivityState.SHUTDOWN, transportSet.getState(false));
verifyNoMoreInteractions(mockTransportFactory);
assertEquals(0, transports.size());
}
