forked from grpc/grpc-java
/
AbstractTransportTest.java
2395 lines (2109 loc) · 105 KB
/
AbstractTransportTest.java
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/*
* Copyright 2016 The gRPC Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.grpc.internal;
import static com.google.common.base.Charsets.UTF_8;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.junit.Assume.assumeTrue;
import static org.mockito.AdditionalAnswers.delegatesTo;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.same;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.verify;
import com.google.common.base.Objects;
import com.google.common.collect.Lists;
import com.google.common.io.ByteStreams;
import com.google.common.util.concurrent.MoreExecutors;
import com.google.common.util.concurrent.SettableFuture;
import io.grpc.Attributes;
import io.grpc.CallOptions;
import io.grpc.ChannelLogger;
import io.grpc.ClientStreamTracer;
import io.grpc.Grpc;
import io.grpc.InternalChannelz.SocketStats;
import io.grpc.InternalChannelz.TransportStats;
import io.grpc.InternalInstrumented;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor;
import io.grpc.ServerStreamTracer;
import io.grpc.Status;
import io.grpc.internal.testing.TestClientStreamTracer;
import io.grpc.internal.testing.TestServerStreamTracer;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.ArgumentCaptor;
import org.mockito.ArgumentMatchers;
import org.mockito.InOrder;
/** Standard unit tests for {@link ClientTransport}s and {@link ServerTransport}s. */
@RunWith(JUnit4.class)
public abstract class AbstractTransportTest {
/**
* Use a small flow control to help detect flow control bugs. Don't use 64KiB to test
* SETTINGS/WINDOW_UPDATE exchange.
*/
public static final int TEST_FLOW_CONTROL_WINDOW = 65 * 1024;
private static final int TIMEOUT_MS = 5000;
private static final Attributes.Key<String> ADDITIONAL_TRANSPORT_ATTR_KEY =
Attributes.Key.create("additional-attr");
private static final Attributes.Key<String> EAG_ATTR_KEY =
Attributes.Key.create("eag-attr");
private static final Attributes EAG_ATTRS =
Attributes.newBuilder().set(EAG_ATTR_KEY, "value").build();
protected final TransportTracer.Factory fakeClockTransportTracer = new TransportTracer.Factory(
new TimeProvider() {
@Override
public long currentTimeNanos() {
return fakeCurrentTimeNanos();
}
});
/**
* Returns a new server that when started will be able to be connected to from the client. Each
* returned instance should be new and yet be accessible by new client transports.
*/
protected abstract InternalServer newServer(
List<ServerStreamTracer.Factory> streamTracerFactories);
/**
* Builds a new server that is listening on the same port as the given server instance does.
*/
protected abstract InternalServer newServer(
int port, List<ServerStreamTracer.Factory> streamTracerFactories);
/**
* Returns a new transport that when started will be able to connect to {@code server}.
*/
protected abstract ManagedClientTransport newClientTransport(InternalServer server);
/**
* Returns the authority string used by a client to connect to {@code server}.
*/
protected abstract String testAuthority(InternalServer server);
/**
* Returns true (which is default) if the transport reports message sizes to StreamTracers.
*/
protected boolean sizesReported() {
return true;
}
protected final Attributes eagAttrs() {
return EAG_ATTRS;
}
protected final ChannelLogger transportLogger() {
return new ChannelLogger() {
@Override
public void log(ChannelLogLevel level, String message) {}
@Override
public void log(ChannelLogLevel level, String messageFormat, Object... args) {}
};
}
/**
* When non-null, will be shut down during tearDown(). However, it _must_ have been started with
* {@code serverListener}, otherwise tearDown() can't wait for shutdown which can put following
* tests in an indeterminate state.
*/
protected InternalServer server;
private ServerTransport serverTransport;
private ManagedClientTransport client;
private MethodDescriptor<String, String> methodDescriptor =
MethodDescriptor.<String, String>newBuilder()
.setType(MethodDescriptor.MethodType.UNKNOWN)
.setFullMethodName("service/method")
.setRequestMarshaller(StringMarshaller.INSTANCE)
.setResponseMarshaller(StringMarshaller.INSTANCE)
.build();
private final CallOptions callOptions = CallOptions.DEFAULT;
private Metadata.Key<String> asciiKey = Metadata.Key.of(
"ascii-key", Metadata.ASCII_STRING_MARSHALLER);
private Metadata.Key<String> binaryKey = Metadata.Key.of(
"key-bin", StringBinaryMarshaller.INSTANCE);
private final Metadata.Key<String> tracerHeaderKey = Metadata.Key.of(
"tracer-key", Metadata.ASCII_STRING_MARSHALLER);
private final String tracerKeyValue = "tracer-key-value";
private ManagedClientTransport.Listener mockClientTransportListener
= mock(ManagedClientTransport.Listener.class);
private MockServerListener serverListener = new MockServerListener();
private ArgumentCaptor<Throwable> throwableCaptor = ArgumentCaptor.forClass(Throwable.class);
private final TestClientStreamTracer clientStreamTracer1 = new TestHeaderClientStreamTracer();
private final TestClientStreamTracer clientStreamTracer2 = new TestHeaderClientStreamTracer();
private final ClientStreamTracer[] tracers = new ClientStreamTracer[] {
clientStreamTracer1, clientStreamTracer2
};
private final ClientStreamTracer[] noopTracers = new ClientStreamTracer[] {
new ClientStreamTracer() {}
};
private final TestServerStreamTracer serverStreamTracer1 = new TestServerStreamTracer();
private final TestServerStreamTracer serverStreamTracer2 = new TestServerStreamTracer();
private final ServerStreamTracer.Factory serverStreamTracerFactory = mock(
ServerStreamTracer.Factory.class,
delegatesTo(new ServerStreamTracer.Factory() {
final ArrayDeque<TestServerStreamTracer> tracers =
new ArrayDeque<>(Arrays.asList(serverStreamTracer1, serverStreamTracer2));
@Override
public ServerStreamTracer newServerStreamTracer(String fullMethodName, Metadata headers) {
TestServerStreamTracer tracer = tracers.poll();
if (tracer != null) {
return tracer;
}
return new TestServerStreamTracer();
}
}));
@SuppressWarnings("deprecation") // https://github.com/grpc/grpc-java/issues/7467
@Rule
public ExpectedException thrown = ExpectedException.none();
@Before
public void setUp() {
server = newServer(Arrays.asList(serverStreamTracerFactory));
}
@After
public void tearDown() throws InterruptedException {
if (client != null) {
client.shutdownNow(Status.UNKNOWN.withDescription("teardown"));
}
if (serverTransport != null) {
serverTransport.shutdownNow(Status.UNKNOWN.withDescription("teardown"));
}
if (server != null) {
server.shutdown();
assertTrue(serverListener.waitForShutdown(TIMEOUT_MS, TimeUnit.MILLISECONDS));
}
}
/**
* Moves the clock forward, for tests that require moving the clock forward. It is the transport
* subclass's responsibility to implement this method.
*/
protected void advanceClock(long offset, TimeUnit unit) {
throw new UnsupportedOperationException();
}
/**
* Returns the current time, for tests that rely on the clock.
*/
protected long fakeCurrentTimeNanos() {
throw new UnsupportedOperationException();
}
// TODO(ejona):
// multiple streams on same transport
// multiple client transports to same server
// halfClose to trigger flush (client and server)
// flow control pushes back (client and server)
// flow control provides precisely number of messages requested (client and server)
// onReady called when buffer drained (on server and client)
// test no start reentrancy (esp. during failure) (transport and call)
// multiple requests/responses (verifying contents received)
// server transport shutdown triggers client shutdown (via GOAWAY)
// queued message InputStreams are closed on stream cancel
// (and maybe exceptions handled)
/**
* Test for issue https://github.com/grpc/grpc-java/issues/1682
*/
@Test
public void frameAfterRstStreamShouldNotBreakClientChannel() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
// Try to create a sequence of frames so that the client receives a HEADERS or DATA frame
// after having sent a RST_STREAM to the server. Previously, this would have broken the
// Netty channel.
ClientStream stream = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
stream.start(clientStreamListener);
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
stream.flush();
stream.writeMessage(methodDescriptor.streamRequest("foo"));
stream.flush();
stream.cancel(Status.CANCELLED);
stream.flush();
serverStreamCreation.stream.writeHeaders(new Metadata());
serverStreamCreation.stream.flush();
serverStreamCreation.stream.writeMessage(methodDescriptor.streamResponse("bar"));
serverStreamCreation.stream.flush();
assertEquals(
Status.CANCELLED, clientStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertNotNull(clientStreamListener.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
ClientStreamListener mockClientStreamListener2 = mock(ClientStreamListener.class);
// Test that the channel is still usable i.e. we can receive headers from the server on a
// new stream.
stream = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
stream.start(mockClientStreamListener2);
serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverStreamCreation.stream.writeHeaders(new Metadata());
serverStreamCreation.stream.flush();
verify(mockClientStreamListener2, timeout(TIMEOUT_MS)).headersRead(any(Metadata.class));
}
@Test
public void serverNotListening() throws Exception {
// Start server to just acquire a port.
server.start(serverListener);
client = newClientTransport(server);
server.shutdown();
assertTrue(serverListener.waitForShutdown(TIMEOUT_MS, TimeUnit.MILLISECONDS));
server = null;
InOrder inOrder = inOrder(mockClientTransportListener);
runIfNotNull(client.start(mockClientTransportListener));
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
ArgumentCaptor<Status> statusCaptor = ArgumentCaptor.forClass(Status.class);
inOrder.verify(mockClientTransportListener).transportShutdown(statusCaptor.capture());
assertCodeEquals(Status.UNAVAILABLE, statusCaptor.getValue());
inOrder.verify(mockClientTransportListener).transportTerminated();
verify(mockClientTransportListener, never()).transportReady();
verify(mockClientTransportListener, never()).transportInUse(anyBoolean());
}
@Test
public void clientStartStop() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
InOrder inOrder = inOrder(mockClientTransportListener);
startTransport(client, mockClientTransportListener);
Status shutdownReason = Status.UNAVAILABLE.withDescription("shutdown called");
client.shutdown(shutdownReason);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
inOrder.verify(mockClientTransportListener).transportShutdown(same(shutdownReason));
inOrder.verify(mockClientTransportListener).transportTerminated();
verify(mockClientTransportListener, never()).transportInUse(anyBoolean());
}
@Test
public void clientStartAndStopOnceConnected() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
InOrder inOrder = inOrder(mockClientTransportListener);
startTransport(client, mockClientTransportListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportReady();
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
client.shutdown(Status.UNAVAILABLE);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
inOrder.verify(mockClientTransportListener).transportShutdown(any(Status.class));
inOrder.verify(mockClientTransportListener).transportTerminated();
assertTrue(serverTransportListener.waitForTermination(TIMEOUT_MS, TimeUnit.MILLISECONDS));
server.shutdown();
assertTrue(serverListener.waitForShutdown(TIMEOUT_MS, TimeUnit.MILLISECONDS));
server = null;
verify(mockClientTransportListener, never()).transportInUse(anyBoolean());
}
@Test
public void checkClientAttributes() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
assumeTrue(client instanceof ConnectionClientTransport);
ConnectionClientTransport connectionClient = (ConnectionClientTransport) client;
startTransport(connectionClient, mockClientTransportListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportReady();
assertNotNull("security level should be set in client attributes",
connectionClient.getAttributes().get(GrpcAttributes.ATTR_SECURITY_LEVEL));
}
@Test
public void serverAlreadyListening() throws Exception {
client = null;
server.start(serverListener);
int port = -1;
SocketAddress addr = server.getListenSocketAddress();
if (addr instanceof InetSocketAddress) {
port = ((InetSocketAddress) addr).getPort();
}
InternalServer server2 = newServer(port, Arrays.asList(serverStreamTracerFactory));
thrown.expect(IOException.class);
server2.start(new MockServerListener());
}
@Test
public void serverStartInterrupted() throws Exception {
client = null;
// Just get free port
server.start(serverListener);
int port = -1;
SocketAddress addr = server.getListenSocketAddress();
if (addr instanceof InetSocketAddress) {
port = ((InetSocketAddress) addr).getPort();
}
assumeTrue("transport is not using InetSocketAddress", port != -1);
server.shutdown();
server = newServer(port, Arrays.asList(serverStreamTracerFactory));
boolean success;
Thread.currentThread().interrupt();
try {
server.start(serverListener);
success = true;
} catch (Exception ex) {
success = false;
} finally {
Thread.interrupted(); // clear interruption
}
assumeTrue("apparently start is not impacted by interruption, so nothing to test", !success);
// second time should not throw, as the first time should not have bound to the port
server.start(serverListener);
}
@Test
public void openStreamPreventsTermination() throws Exception {
server.start(serverListener);
int port = -1;
SocketAddress addr = server.getListenSocketAddress();
if (addr instanceof InetSocketAddress) {
port = ((InetSocketAddress) addr).getPort();
}
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
ClientStream clientStream = client.newStream(
methodDescriptor, new Metadata(), callOptions, tracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
clientStream.start(clientStreamListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(true);
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
ServerStream serverStream = serverStreamCreation.stream;
ServerStreamListenerBase serverStreamListener = serverStreamCreation.listener;
client.shutdown(Status.UNAVAILABLE);
client = null;
server.shutdown();
serverTransport.shutdown();
serverTransport = null;
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportShutdown(any(Status.class));
assertTrue(serverListener.waitForShutdown(TIMEOUT_MS, TimeUnit.MILLISECONDS));
// A new server should be able to start listening, since the current server has given up
// resources. There may be cases this is impossible in the future, but for now it is a useful
// property.
serverListener = new MockServerListener();
server = newServer(port, Arrays.asList(serverStreamTracerFactory));
server.start(serverListener);
// Try to "flush" out any listener notifications on client and server. This also ensures that
// the stream still functions.
serverStream.writeHeaders(new Metadata());
clientStream.halfClose();
assertNotNull(clientStreamListener.headers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertTrue(serverStreamListener.awaitHalfClosed(TIMEOUT_MS, TimeUnit.MILLISECONDS));
verify(mockClientTransportListener, never()).transportTerminated();
verify(mockClientTransportListener, never()).transportInUse(false);
assertFalse(serverTransportListener.isTerminated());
clientStream.cancel(Status.CANCELLED);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(false);
assertTrue(serverTransportListener.waitForTermination(TIMEOUT_MS, TimeUnit.MILLISECONDS));
}
@Test
public void shutdownNowKillsClientStream() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
ClientStream clientStream = client.newStream(
methodDescriptor, new Metadata(), callOptions, tracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
clientStream.start(clientStreamListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(true);
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
ServerStreamListenerBase serverStreamListener = serverStreamCreation.listener;
Status status = Status.UNKNOWN.withDescription("test shutdownNow");
client.shutdownNow(status);
client = null;
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportShutdown(any(Status.class));
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(false);
assertTrue(serverTransportListener.waitForTermination(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertTrue(serverTransportListener.isTerminated());
assertEquals(status, clientStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertNotNull(clientStreamListener.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
Status serverStatus = serverStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertFalse(serverStatus.isOk());
assertTrue(clientStreamTracer1.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertNull(clientStreamTracer1.getInboundTrailers());
assertStatusEquals(status, clientStreamTracer1.getStatus());
assertTrue(serverStreamTracer1.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertStatusEquals(serverStatus, serverStreamTracer1.getStatus());
}
@Test
public void shutdownNowKillsServerStream() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
ClientStream clientStream = client.newStream(
methodDescriptor, new Metadata(), callOptions, tracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
clientStream.start(clientStreamListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(true);
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
ServerStreamListenerBase serverStreamListener = serverStreamCreation.listener;
Status shutdownStatus = Status.UNKNOWN.withDescription("test shutdownNow");
serverTransport.shutdownNow(shutdownStatus);
serverTransport = null;
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportShutdown(any(Status.class));
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(false);
assertTrue(serverTransportListener.waitForTermination(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertTrue(serverTransportListener.isTerminated());
Status clientStreamStatus = clientStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertFalse(clientStreamStatus.isOk());
assertNotNull(clientStreamListener.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertTrue(clientStreamTracer1.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertNull(clientStreamTracer1.getInboundTrailers());
assertStatusEquals(clientStreamStatus, clientStreamTracer1.getStatus());
assertTrue(serverStreamTracer1.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertStatusEquals(shutdownStatus, serverStreamTracer1.getStatus());
// Generally will be same status provided to shutdownNow, but InProcessTransport can't
// differentiate between client and server shutdownNow. The status is not really used on
// server-side, so we don't care much.
assertNotNull(serverStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
}
@Test
public void ping() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
ClientTransport.PingCallback mockPingCallback = mock(ClientTransport.PingCallback.class);
try {
client.ping(mockPingCallback, MoreExecutors.directExecutor());
} catch (UnsupportedOperationException ex) {
// Transport doesn't support ping, so this neither passes nor fails.
assumeTrue(false);
}
verify(mockPingCallback, timeout(TIMEOUT_MS)).onSuccess(ArgumentMatchers.anyLong());
verify(mockClientTransportListener, never()).transportInUse(anyBoolean());
}
@Test
public void ping_duringShutdown() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
// Stream prevents termination
ClientStream stream = client.newStream(
methodDescriptor, new Metadata(), callOptions, tracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
stream.start(clientStreamListener);
client.shutdown(Status.UNAVAILABLE);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportShutdown(any(Status.class));
ClientTransport.PingCallback mockPingCallback = mock(ClientTransport.PingCallback.class);
try {
client.ping(mockPingCallback, MoreExecutors.directExecutor());
} catch (UnsupportedOperationException ex) {
// Transport doesn't support ping, so this neither passes nor fails.
assumeTrue(false);
}
verify(mockPingCallback, timeout(TIMEOUT_MS)).onSuccess(ArgumentMatchers.anyLong());
stream.cancel(Status.CANCELLED);
}
@Test
public void ping_afterTermination() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportReady();
Status shutdownReason = Status.UNAVAILABLE.withDescription("shutdown called");
client.shutdown(shutdownReason);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
ClientTransport.PingCallback mockPingCallback = mock(ClientTransport.PingCallback.class);
try {
client.ping(mockPingCallback, MoreExecutors.directExecutor());
} catch (UnsupportedOperationException ex) {
// Transport doesn't support ping, so this neither passes nor fails.
assumeTrue(false);
}
verify(mockPingCallback, timeout(TIMEOUT_MS)).onFailure(throwableCaptor.capture());
Status status = Status.fromThrowable(throwableCaptor.getValue());
assertSame(shutdownReason, status);
}
@Test
public void newStream_duringShutdown() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
// Stream prevents termination
ClientStream stream = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
stream.start(clientStreamListener);
client.shutdown(Status.UNAVAILABLE);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportShutdown(any(Status.class));
ClientStream stream2 = client.newStream(
methodDescriptor, new Metadata(), callOptions, tracers);
ClientStreamListenerBase clientStreamListener2 = new ClientStreamListenerBase();
stream2.start(clientStreamListener2);
Status clientStreamStatus2 =
clientStreamListener2.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertNotNull(clientStreamListener2.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertCodeEquals(Status.UNAVAILABLE, clientStreamStatus2);
assertNull(clientStreamTracer2.getInboundTrailers());
assertSame(clientStreamStatus2, clientStreamTracer2.getStatus());
// Make sure earlier stream works.
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
// TODO(zdapeng): Increased timeout to 20 seconds to see if flakiness of #2328 persists. Take
// further action after sufficient observation.
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(20 * TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverStreamCreation.stream.close(Status.OK, new Metadata());
assertCodeEquals(Status.OK, clientStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertNotNull(clientStreamListener.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
}
@Test
public void newStream_afterTermination() throws Exception {
// We expect the same general behavior as duringShutdown, but for some transports (e.g., Netty)
// dealing with afterTermination is harder than duringShutdown.
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportReady();
Status shutdownReason = Status.UNAVAILABLE.withDescription("shutdown called");
client.shutdown(shutdownReason);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportTerminated();
Thread.sleep(100);
ClientStream stream = client.newStream(
methodDescriptor, new Metadata(), callOptions, tracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
stream.start(clientStreamListener);
assertEquals(
shutdownReason, clientStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertNotNull(clientStreamListener.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
verify(mockClientTransportListener, never()).transportInUse(anyBoolean());
assertNull(clientStreamTracer1.getInboundTrailers());
assertSame(shutdownReason, clientStreamTracer1.getStatus());
// Assert no interactions
assertNull(serverStreamTracer1.getServerCallInfo());
}
@Test
public void transportInUse_balancerRpcsNotCounted() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
// stream1 is created by balancer through Subchannel.asChannel(), which is marked by
// CALL_OPTIONS_RPC_OWNED_BY_BALANCER in CallOptions. It won't be counted for in-use signal.
ClientStream stream1 = client.newStream(
methodDescriptor, new Metadata(),
callOptions.withOption(GrpcUtil.CALL_OPTIONS_RPC_OWNED_BY_BALANCER, Boolean.TRUE),
noopTracers);
ClientStreamListenerBase clientStreamListener1 = new ClientStreamListenerBase();
stream1.start(clientStreamListener1);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
StreamCreation serverStreamCreation1
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
// stream2 is the normal RPC, and will be counted for in-use
ClientStream stream2 = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener2 = new ClientStreamListenerBase();
stream2.start(clientStreamListener2);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(true);
StreamCreation serverStreamCreation2
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
stream2.halfClose();
verify(mockClientTransportListener, never()).transportInUse(false);
serverStreamCreation2.stream.close(Status.OK, new Metadata());
// As soon as stream2 is closed, even though stream1 is still open, the transport will report
// in-use == false.
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(false);
stream1.halfClose();
serverStreamCreation1.stream.close(Status.OK, new Metadata());
// Verify that the callback has been called only once for true and false respectively
verify(mockClientTransportListener).transportInUse(true);
verify(mockClientTransportListener).transportInUse(false);
}
@Test
public void transportInUse_normalClose() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
ClientStream stream1 = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener1 = new ClientStreamListenerBase();
stream1.start(clientStreamListener1);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(true);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
StreamCreation serverStreamCreation1
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
ClientStream stream2 = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener2 = new ClientStreamListenerBase();
stream2.start(clientStreamListener2);
StreamCreation serverStreamCreation2
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
stream1.halfClose();
serverStreamCreation1.stream.close(Status.OK, new Metadata());
stream2.halfClose();
verify(mockClientTransportListener, never()).transportInUse(false);
serverStreamCreation2.stream.close(Status.OK, new Metadata());
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(false);
// Verify that the callback has been called only once for true and false respectively
verify(mockClientTransportListener).transportInUse(true);
verify(mockClientTransportListener).transportInUse(false);
}
@Test
public void transportInUse_clientCancel() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
ClientStream stream1 = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener1 = new ClientStreamListenerBase();
stream1.start(clientStreamListener1);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(true);
ClientStream stream2 = client.newStream(
methodDescriptor, new Metadata(), callOptions, noopTracers);
ClientStreamListenerBase clientStreamListener2 = new ClientStreamListenerBase();
stream2.start(clientStreamListener2);
stream1.cancel(Status.CANCELLED);
verify(mockClientTransportListener, never()).transportInUse(false);
stream2.cancel(Status.CANCELLED);
verify(mockClientTransportListener, timeout(TIMEOUT_MS)).transportInUse(false);
// Verify that the callback has been called only once for true and false respectively
verify(mockClientTransportListener).transportInUse(true);
verify(mockClientTransportListener).transportInUse(false);
}
@Test
public void basicStream() throws Exception {
InOrder serverInOrder = inOrder(serverStreamTracerFactory);
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
// This attribute is available right after transport is started
assertThat(((ConnectionClientTransport) client).getAttributes()
.get(GrpcAttributes.ATTR_CLIENT_EAG_ATTRS)).isSameInstanceAs(EAG_ATTRS);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
Metadata clientHeaders = new Metadata();
clientHeaders.put(asciiKey, "client");
clientHeaders.put(asciiKey, "dupvalue");
clientHeaders.put(asciiKey, "dupvalue");
clientHeaders.put(binaryKey, "äbinaryclient");
clientHeaders.put(binaryKey, "dup,value");
Metadata clientHeadersCopy = new Metadata();
clientHeadersCopy.merge(clientHeaders);
ClientStream clientStream = client.newStream(
methodDescriptor, clientHeaders, callOptions, tracers);
assertThat(((TestHeaderClientStreamTracer) clientStreamTracer1).transportAttrs)
.isSameInstanceAs(((ConnectionClientTransport) client).getAttributes());
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
clientStream.start(clientStreamListener);
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertTrue(clientStreamTracer1.awaitOutboundHeaders(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertEquals(methodDescriptor.getFullMethodName(), serverStreamCreation.method);
assertEquals(Lists.newArrayList(clientHeadersCopy.getAll(asciiKey)),
Lists.newArrayList(serverStreamCreation.headers.getAll(asciiKey)));
assertEquals(Lists.newArrayList(clientHeadersCopy.getAll(binaryKey)),
Lists.newArrayList(serverStreamCreation.headers.getAll(binaryKey)));
assertEquals(tracerKeyValue, serverStreamCreation.headers.get(tracerHeaderKey));
ServerStream serverStream = serverStreamCreation.stream;
ServerStreamListenerBase serverStreamListener = serverStreamCreation.listener;
serverInOrder.verify(serverStreamTracerFactory).newServerStreamTracer(
eq(methodDescriptor.getFullMethodName()), any(Metadata.class));
assertEquals("additional attribute value",
serverStream.getAttributes().get(ADDITIONAL_TRANSPORT_ATTR_KEY));
assertNotNull(serverStream.getAttributes().get(Grpc.TRANSPORT_ATTR_REMOTE_ADDR));
assertNotNull(serverStream.getAttributes().get(Grpc.TRANSPORT_ATTR_LOCAL_ADDR));
// This attribute is still available when the transport is connected
assertThat(((ConnectionClientTransport) client).getAttributes()
.get(GrpcAttributes.ATTR_CLIENT_EAG_ATTRS)).isSameInstanceAs(EAG_ATTRS);
serverStream.request(1);
assertTrue(clientStreamListener.awaitOnReadyAndDrain(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertTrue(clientStream.isReady());
clientStream.writeMessage(methodDescriptor.streamRequest("Hello!"));
assertThat(clientStreamTracer1.nextOutboundEvent()).isEqualTo("outboundMessage(0)");
clientStream.flush();
InputStream message = serverStreamListener.messageQueue.poll(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertEquals("Hello!", methodDescriptor.parseRequest(message));
message.close();
assertThat(clientStreamTracer1.nextOutboundEvent())
.matches("outboundMessageSent\\(0, -?[0-9]+, -?[0-9]+\\)");
if (sizesReported()) {
assertThat(clientStreamTracer1.getOutboundWireSize()).isGreaterThan(0L);
assertThat(clientStreamTracer1.getOutboundUncompressedSize()).isGreaterThan(0L);
} else {
assertThat(clientStreamTracer1.getOutboundWireSize()).isEqualTo(0L);
assertThat(clientStreamTracer1.getOutboundUncompressedSize()).isEqualTo(0L);
}
assertThat(serverStreamTracer1.nextInboundEvent()).isEqualTo("inboundMessage(0)");
assertNull("no additional message expected", serverStreamListener.messageQueue.poll());
clientStream.halfClose();
assertTrue(serverStreamListener.awaitHalfClosed(TIMEOUT_MS, TimeUnit.MILLISECONDS));
if (sizesReported()) {
assertThat(serverStreamTracer1.getInboundWireSize()).isGreaterThan(0L);
assertThat(serverStreamTracer1.getInboundUncompressedSize()).isGreaterThan(0L);
} else {
assertThat(serverStreamTracer1.getInboundWireSize()).isEqualTo(0L);
assertThat(serverStreamTracer1.getInboundUncompressedSize()).isEqualTo(0L);
}
assertThat(serverStreamTracer1.nextInboundEvent())
.matches("inboundMessageRead\\(0, -?[0-9]+, -?[0-9]+\\)");
Metadata serverHeaders = new Metadata();
serverHeaders.put(asciiKey, "server");
serverHeaders.put(asciiKey, "dupvalue");
serverHeaders.put(asciiKey, "dupvalue");
serverHeaders.put(binaryKey, "äbinaryserver");
serverHeaders.put(binaryKey, "dup,value");
Metadata serverHeadersCopy = new Metadata();
serverHeadersCopy.merge(serverHeaders);
serverStream.writeHeaders(serverHeaders);
Metadata headers = clientStreamListener.headers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertNotNull(headers);
assertAsciiMetadataValuesEqual(serverHeadersCopy.getAll(asciiKey), headers.getAll(asciiKey));
assertEquals(
Lists.newArrayList(serverHeadersCopy.getAll(binaryKey)),
Lists.newArrayList(headers.getAll(binaryKey)));
clientStream.request(1);
assertTrue(serverStreamListener.awaitOnReadyAndDrain(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertTrue(serverStream.isReady());
serverStream.writeMessage(methodDescriptor.streamResponse("Hi. Who are you?"));
assertThat(serverStreamTracer1.nextOutboundEvent()).isEqualTo("outboundMessage(0)");
serverStream.flush();
message = clientStreamListener.messageQueue.poll(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertNotNull("message expected", message);
assertThat(serverStreamTracer1.nextOutboundEvent())
.matches("outboundMessageSent\\(0, -?[0-9]+, -?[0-9]+\\)");
if (sizesReported()) {
assertThat(serverStreamTracer1.getOutboundWireSize()).isGreaterThan(0L);
assertThat(serverStreamTracer1.getOutboundUncompressedSize()).isGreaterThan(0L);
} else {
assertThat(serverStreamTracer1.getOutboundWireSize()).isEqualTo(0L);
assertThat(serverStreamTracer1.getOutboundUncompressedSize()).isEqualTo(0L);
}
assertTrue(clientStreamTracer1.getInboundHeaders());
assertThat(clientStreamTracer1.nextInboundEvent()).isEqualTo("inboundMessage(0)");
assertEquals("Hi. Who are you?", methodDescriptor.parseResponse(message));
assertThat(clientStreamTracer1.nextInboundEvent())
.matches("inboundMessageRead\\(0, -?[0-9]+, -?[0-9]+\\)");
if (sizesReported()) {
assertThat(clientStreamTracer1.getInboundWireSize()).isGreaterThan(0L);
assertThat(clientStreamTracer1.getInboundUncompressedSize()).isGreaterThan(0L);
} else {
assertThat(clientStreamTracer1.getInboundWireSize()).isEqualTo(0L);
assertThat(clientStreamTracer1.getInboundUncompressedSize()).isEqualTo(0L);
}
message.close();
assertNull("no additional message expected", clientStreamListener.messageQueue.poll());
Status status = Status.OK.withDescription("That was normal");
Metadata trailers = new Metadata();
trailers.put(asciiKey, "trailers");
trailers.put(asciiKey, "dupvalue");
trailers.put(asciiKey, "dupvalue");
trailers.put(binaryKey, "äbinarytrailers");
trailers.put(binaryKey, "dup,value");
serverStream.close(status, trailers);
assertNull(serverStreamTracer1.nextInboundEvent());
assertNull(serverStreamTracer1.nextOutboundEvent());
assertCodeEquals(Status.OK, serverStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS));
assertSame(status, serverStreamTracer1.getStatus());
Status clientStreamStatus = clientStreamListener.status.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
Metadata clientStreamTrailers =
clientStreamListener.trailers.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
assertSame(clientStreamTrailers, clientStreamTracer1.getInboundTrailers());
assertSame(clientStreamStatus, clientStreamTracer1.getStatus());
assertNull(clientStreamTracer1.nextInboundEvent());
assertNull(clientStreamTracer1.nextOutboundEvent());
assertEquals(status.getCode(), clientStreamStatus.getCode());
assertEquals(status.getDescription(), clientStreamStatus.getDescription());
assertAsciiMetadataValuesEqual(
trailers.getAll(asciiKey), clientStreamTrailers.getAll(asciiKey));
assertEquals(
Lists.newArrayList(trailers.getAll(binaryKey)),
Lists.newArrayList(clientStreamTrailers.getAll(binaryKey)));
}
@Test
@SuppressWarnings("deprecation")
public void authorityPropagation() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
Metadata clientHeaders = new Metadata();
ClientStream clientStream = client.newStream(
methodDescriptor, clientHeaders, callOptions, tracers);
ClientStreamListenerBase clientStreamListener = new ClientStreamListenerBase();
clientStream.start(clientStreamListener);
StreamCreation serverStreamCreation
= serverTransportListener.takeStreamOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
ServerStream serverStream = serverStreamCreation.stream;
assertEquals(testAuthority(server), serverStream.getAuthority());
}
private void assertAsciiMetadataValuesEqual(Iterable<String> expected, Iterable<String> actural) {
StringBuilder sbExpected = new StringBuilder();
for (String str : expected) {
sbExpected.append(str).append(",");
}
StringBuilder sbActual = new StringBuilder();
for (String str : actural) {
sbActual.append(str).append(",");
}
assertEquals(sbExpected.toString(), sbActual.toString());
}
@Test
public void zeroMessageStream() throws Exception {
server.start(serverListener);
client = newClientTransport(server);
startTransport(client, mockClientTransportListener);
MockServerTransportListener serverTransportListener
= serverListener.takeListenerOrFail(TIMEOUT_MS, TimeUnit.MILLISECONDS);
serverTransport = serverTransportListener.transport;
ClientStream clientStream = client.newStream(