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AbstractClientStreamTest.java
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AbstractClientStreamTest.java
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/*
* Copyright 2015 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.truth.Truth.assertThat;
import static io.grpc.internal.ClientStreamListener.RpcProgress.PROCESSED;
import static io.grpc.internal.GrpcUtil.DEFAULT_MAX_MESSAGE_SIZE;
import static org.junit.Assert.assertEquals;
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.mockito.AdditionalAnswers.delegatesTo;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.same;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import io.grpc.Attributes;
import io.grpc.CallOptions;
import io.grpc.Codec;
import io.grpc.Deadline;
import io.grpc.Grpc;
import io.grpc.Metadata;
import io.grpc.Status;
import io.grpc.Status.Code;
import io.grpc.StreamTracer;
import io.grpc.internal.AbstractClientStream.TransportState;
import io.grpc.internal.ClientStreamListener.RpcProgress;
import io.grpc.internal.MessageFramerTest.ByteWritableBuffer;
import io.grpc.internal.testing.TestClientStreamTracer;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.SocketAddress;
import java.util.concurrent.TimeUnit;
import org.junit.Before;
import org.junit.Ignore;
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.Mock;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;
import org.mockito.stubbing.Answer;
/**
* Test for {@link AbstractClientStream}. This class tries to test functionality in
* AbstractClientStream, but not in any super classes.
*/
@RunWith(JUnit4.class)
public class AbstractClientStreamTest {
@Rule public final MockitoRule mocks = MockitoJUnit.rule();
@Rule public final ExpectedException thrown = ExpectedException.none();
private final StatsTraceContext statsTraceCtx = StatsTraceContext.NOOP;
private final TransportTracer transportTracer = new TransportTracer();
private static final SocketAddress SERVER_ADDR = new SocketAddress() {
@Override
public String toString() {
return "fake_server_addr";
}
};
@Mock private ClientStreamListener mockListener;
@Before
public void setUp() {
doAnswer(new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
StreamListener.MessageProducer producer =
(StreamListener.MessageProducer) invocation.getArguments()[0];
while (producer.next() != null) {}
return null;
}
}).when(mockListener).messagesAvailable(ArgumentMatchers.<StreamListener.MessageProducer>any());
}
private final WritableBufferAllocator allocator = new WritableBufferAllocator() {
@Override
public WritableBuffer allocate(int capacityHint) {
return new ByteWritableBuffer(capacityHint);
}
};
@Test
public void cancel_doNotAcceptOk() {
for (Code code : Code.values()) {
ClientStreamListener listener = new NoopClientStreamListener();
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(listener);
if (code != Code.OK) {
stream.cancel(Status.fromCodeValue(code.value()));
} else {
try {
stream.cancel(Status.fromCodeValue(code.value()));
fail();
} catch (IllegalArgumentException e) {
// ignore
}
}
}
}
@Test
public void cancel_failsOnNull() {
ClientStreamListener listener = new NoopClientStreamListener();
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(listener);
thrown.expect(NullPointerException.class);
stream.cancel(null);
}
@Test
public void cancel_notifiesOnlyOnce() {
final BaseTransportState state = new BaseTransportState(statsTraceCtx, transportTracer);
AbstractClientStream stream = new BaseAbstractClientStream(allocator, state, new BaseSink() {
@Override
public void cancel(Status errorStatus) {
// Cancel should eventually result in a transportReportStatus on the transport thread
state.transportReportStatus(errorStatus, true/*stop delivery*/, new Metadata());
}
}, statsTraceCtx, transportTracer);
stream.start(mockListener);
stream.cancel(Status.DEADLINE_EXCEEDED);
stream.cancel(Status.DEADLINE_EXCEEDED);
verify(mockListener).closed(any(Status.class), same(PROCESSED), any(Metadata.class));
}
@Test
public void startFailsOnNullListener() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
thrown.expect(NullPointerException.class);
stream.start(null);
}
@Test
public void cantCallStartTwice() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
thrown.expect(IllegalStateException.class);
stream.start(mockListener);
}
@Test
public void inboundDataReceived_failsOnNullFrame() {
ClientStreamListener listener = new NoopClientStreamListener();
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(listener);
TransportState state = stream.transportState();
thrown.expect(NullPointerException.class);
state.inboundDataReceived(null);
}
@Test
public void inboundHeadersReceived_notifiesListener() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
stream.transportState().inboundHeadersReceived(headers);
verify(mockListener).headersRead(headers);
}
@Test
@Ignore // No longer applicable due to deadline/close race condition
public void inboundHeadersReceived_failsIfStatusReported() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
stream.transportState().transportReportStatus(Status.CANCELLED, false, new Metadata());
TransportState state = stream.transportState();
thrown.expect(IllegalStateException.class);
state.inboundHeadersReceived(new Metadata());
}
@Test
public void inboundHeadersReceived_acceptsGzipContentEncoding() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.CONTENT_ENCODING_KEY, "gzip");
stream.setFullStreamDecompression(true);
stream.transportState().inboundHeadersReceived(headers);
verify(mockListener).headersRead(headers);
}
@Test
// https://tools.ietf.org/html/rfc7231#section-3.1.2.1
public void inboundHeadersReceived_contentEncodingIsCaseInsensitive() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.CONTENT_ENCODING_KEY, "gZIp");
stream.setFullStreamDecompression(true);
stream.transportState().inboundHeadersReceived(headers);
verify(mockListener).headersRead(headers);
}
@Test
public void inboundHeadersReceived_failsOnUnrecognizedContentEncoding() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.CONTENT_ENCODING_KEY, "not-a-real-compression-method");
stream.setFullStreamDecompression(true);
stream.transportState().inboundHeadersReceived(headers);
verifyNoMoreInteractions(mockListener);
Throwable t = ((BaseTransportState) stream.transportState()).getDeframeFailedCause();
assertEquals(Status.INTERNAL.getCode(), Status.fromThrowable(t).getCode());
assertTrue(
"unexpected deframe failed description",
Status.fromThrowable(t)
.getDescription()
.startsWith("Can't find full stream decompressor for"));
}
@Test
public void inboundHeadersReceived_disallowsContentAndMessageEncoding() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.CONTENT_ENCODING_KEY, "gzip");
headers.put(GrpcUtil.MESSAGE_ENCODING_KEY, new Codec.Gzip().getMessageEncoding());
stream.setFullStreamDecompression(true);
stream.transportState().inboundHeadersReceived(headers);
verifyNoMoreInteractions(mockListener);
Throwable t = ((BaseTransportState) stream.transportState()).getDeframeFailedCause();
assertEquals(Status.INTERNAL.getCode(), Status.fromThrowable(t).getCode());
assertTrue(
"unexpected deframe failed description",
Status.fromThrowable(t)
.getDescription()
.equals("Full stream and gRPC message encoding cannot both be set"));
}
@Test
public void inboundHeadersReceived_acceptsGzipMessageEncoding() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.MESSAGE_ENCODING_KEY, new Codec.Gzip().getMessageEncoding());
stream.transportState().inboundHeadersReceived(headers);
verify(mockListener).headersRead(headers);
}
@Test
public void inboundHeadersReceived_acceptsIdentityMessageEncoding() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.MESSAGE_ENCODING_KEY, Codec.Identity.NONE.getMessageEncoding());
stream.transportState().inboundHeadersReceived(headers);
verify(mockListener).headersRead(headers);
}
@Test
public void inboundHeadersReceived_failsOnUnrecognizedMessageEncoding() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
Metadata headers = new Metadata();
headers.put(GrpcUtil.MESSAGE_ENCODING_KEY, "not-a-real-compression-method");
stream.transportState().inboundHeadersReceived(headers);
verifyNoMoreInteractions(mockListener);
Throwable t = ((BaseTransportState) stream.transportState()).getDeframeFailedCause();
assertEquals(Status.INTERNAL.getCode(), Status.fromThrowable(t).getCode());
assertTrue(
"unexpected deframe failed description",
Status.fromThrowable(t).getDescription().startsWith("Can't find decompressor for"));
}
@Test
public void rstStreamClosesStream() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
// The application will call request when waiting for a message, which will in turn call this
// on the transport thread.
stream.transportState().requestMessagesFromDeframer(1);
// Send first byte of 2 byte message
stream.transportState().deframe(ReadableBuffers.wrap(new byte[] {0, 0, 0, 0, 2, 1}));
Status status = Status.INTERNAL.withDescription("rst___stream");
// Simulate getting a reset
stream.transportState().transportReportStatus(status, false /*stop delivery*/, new Metadata());
ArgumentCaptor<Status> statusCaptor = ArgumentCaptor.forClass(Status.class);
verify(mockListener)
.closed(statusCaptor.capture(), any(RpcProgress.class), any(Metadata.class));
assertSame(Status.Code.INTERNAL, statusCaptor.getValue().getCode());
assertEquals("rst___stream", statusCaptor.getValue().getDescription());
}
@Test
public void statusOkFollowedByRstStreamNoError() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
stream.transportState().deframe(ReadableBuffers.wrap(new byte[] {0, 0, 0, 0, 1, 1}));
stream.transportState().inboundTrailersReceived(new Metadata(), Status.OK);
Status status = Status.INTERNAL.withDescription("rst___stream");
// Simulate getting a reset
stream.transportState().transportReportStatus(status, false /*stop delivery*/, new Metadata());
stream.transportState().requestMessagesFromDeframer(1);
ArgumentCaptor<Status> statusCaptor = ArgumentCaptor.forClass(Status.class);
verify(mockListener)
.closed(statusCaptor.capture(), any(RpcProgress.class), any(Metadata.class));
assertTrue(statusCaptor.getValue().isOk());
}
@Test
public void trailerOkWithTruncatedMessage() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
stream.transportState().requestMessagesFromDeframer(1);
stream.transportState().deframe(ReadableBuffers.wrap(new byte[] {0, 0, 0, 0, 2, 1}));
stream.transportState().inboundTrailersReceived(new Metadata(), Status.OK);
ArgumentCaptor<Status> statusCaptor = ArgumentCaptor.forClass(Status.class);
verify(mockListener)
.closed(statusCaptor.capture(), any(RpcProgress.class), any(Metadata.class));
assertSame(Status.Code.INTERNAL, statusCaptor.getValue().getCode());
assertEquals("Encountered end-of-stream mid-frame", statusCaptor.getValue().getDescription());
}
@Test
public void trailerNotOkWithTruncatedMessage() {
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.start(mockListener);
stream.transportState().requestMessagesFromDeframer(1);
stream.transportState().deframe(ReadableBuffers.wrap(new byte[] {0, 0, 0, 0, 2, 1}));
stream.transportState().inboundTrailersReceived(
new Metadata(), Status.DATA_LOSS.withDescription("data___loss"));
ArgumentCaptor<Status> statusCaptor = ArgumentCaptor.forClass(Status.class);
verify(mockListener)
.closed(statusCaptor.capture(), any(RpcProgress.class), any(Metadata.class));
assertSame(Status.Code.DATA_LOSS, statusCaptor.getValue().getCode());
assertEquals("data___loss", statusCaptor.getValue().getDescription());
}
@Test
public void getRequest() {
AbstractClientStream.Sink sink = mock(AbstractClientStream.Sink.class);
final TestClientStreamTracer tracer = new TestClientStreamTracer();
StatsTraceContext statsTraceCtx = new StatsTraceContext(new StreamTracer[]{tracer});
AbstractClientStream stream = new BaseAbstractClientStream(
allocator,
new BaseTransportState(statsTraceCtx, transportTracer),
sink,
statsTraceCtx,
transportTracer,
true);
stream.start(mockListener);
stream.writeMessage(new ByteArrayInputStream(new byte[1]));
// writeHeaders will be delayed since we're sending a GET request.
verify(sink, never()).writeHeaders(any(Metadata.class), any(byte[].class));
// halfClose will trigger writeHeaders.
stream.halfClose();
ArgumentCaptor<byte[]> payloadCaptor = ArgumentCaptor.forClass(byte[].class);
verify(sink).writeHeaders(any(Metadata.class), payloadCaptor.capture());
assertTrue(payloadCaptor.getValue() != null);
// GET requests don't have BODY.
verify(sink, never())
.writeFrame(any(WritableBuffer.class), anyBoolean(), anyBoolean(), anyInt());
assertThat(tracer.nextOutboundEvent()).isEqualTo("outboundMessage(0)");
assertThat(tracer.nextOutboundEvent()).matches("outboundMessageSent\\(0, [0-9]+, [0-9]+\\)");
assertNull(tracer.nextOutboundEvent());
assertNull(tracer.nextInboundEvent());
assertEquals(1, tracer.getOutboundWireSize());
assertEquals(1, tracer.getOutboundUncompressedSize());
}
@Test
public void writeMessage_closesStream() throws IOException {
AbstractClientStream.Sink sink = mock(AbstractClientStream.Sink.class);
final TestClientStreamTracer tracer = new TestClientStreamTracer();
StatsTraceContext statsTraceCtx = new StatsTraceContext(new StreamTracer[] {tracer});
AbstractClientStream stream = new BaseAbstractClientStream(
allocator,
new BaseTransportState(statsTraceCtx, transportTracer),
sink,
statsTraceCtx,
transportTracer,
true);
stream.start(mockListener);
InputStream input = mock(InputStream.class, delegatesTo(new ByteArrayInputStream(new byte[1])));
stream.writeMessage(input);
verify(input).close();
}
@Test
public void deadlineTimeoutPopulatedToHeaders() {
AbstractClientStream.Sink sink = mock(AbstractClientStream.Sink.class);
ClientStream stream = new BaseAbstractClientStream(
allocator, new BaseTransportState(statsTraceCtx, transportTracer), sink, statsTraceCtx,
transportTracer);
stream.setDeadline(Deadline.after(1, TimeUnit.SECONDS));
stream.start(mockListener);
ArgumentCaptor<Metadata> headersCaptor = ArgumentCaptor.forClass(Metadata.class);
verify(sink).writeHeaders(headersCaptor.capture(), ArgumentMatchers.<byte[]>any());
Metadata headers = headersCaptor.getValue();
assertTrue(headers.containsKey(GrpcUtil.TIMEOUT_KEY));
assertThat(headers.get(GrpcUtil.TIMEOUT_KEY).longValue())
.isLessThan(TimeUnit.SECONDS.toNanos(1));
assertThat(headers.get(GrpcUtil.TIMEOUT_KEY).longValue())
.isGreaterThan(TimeUnit.MILLISECONDS.toNanos(600));
}
@Test
public void appendTimeoutInsight() {
InsightBuilder insight = new InsightBuilder();
AbstractClientStream stream =
new BaseAbstractClientStream(allocator, statsTraceCtx, transportTracer);
stream.appendTimeoutInsight(insight);
assertThat(insight.toString()).isEqualTo("[remote_addr=fake_server_addr]");
}
/**
* No-op base class for testing.
*/
private static class BaseAbstractClientStream extends AbstractClientStream {
private final TransportState state;
private final Sink sink;
public BaseAbstractClientStream(
WritableBufferAllocator allocator,
StatsTraceContext statsTraceCtx,
TransportTracer transportTracer) {
this(
allocator,
new BaseTransportState(statsTraceCtx, transportTracer),
new BaseSink(),
statsTraceCtx,
transportTracer);
}
public BaseAbstractClientStream(
WritableBufferAllocator allocator,
TransportState state,
Sink sink,
StatsTraceContext statsTraceCtx,
TransportTracer transportTracer) {
this(allocator, state, sink, statsTraceCtx, transportTracer, false);
}
public BaseAbstractClientStream(
WritableBufferAllocator allocator,
TransportState state,
Sink sink,
StatsTraceContext statsTraceCtx,
TransportTracer transportTracer,
boolean useGet) {
super(allocator, statsTraceCtx, transportTracer, new Metadata(), CallOptions.DEFAULT, useGet);
this.state = state;
this.sink = sink;
}
@Override
protected Sink abstractClientStreamSink() {
return sink;
}
@Override
public TransportState transportState() {
return state;
}
@Override
public void setAuthority(String authority) {}
@Override
public void setMaxInboundMessageSize(int maxSize) {}
@Override
public void setMaxOutboundMessageSize(int maxSize) {}
@Override
public Attributes getAttributes() {
return Attributes.newBuilder().set(Grpc.TRANSPORT_ATTR_REMOTE_ADDR, SERVER_ADDR).build();
}
}
private static class BaseSink implements AbstractClientStream.Sink {
@Override
public void writeHeaders(Metadata headers, byte[] payload) {}
@Override
public void request(int numMessages) {}
@Override
public void writeFrame(
WritableBuffer frame, boolean endOfStream, boolean flush, int numMessages) {}
@Override
public void cancel(Status reason) {}
}
private static class BaseTransportState extends AbstractClientStream.TransportState {
private Throwable deframeFailedCause;
private Throwable getDeframeFailedCause() {
return deframeFailedCause;
}
public BaseTransportState(StatsTraceContext statsTraceCtx, TransportTracer transportTracer) {
super(DEFAULT_MAX_MESSAGE_SIZE, statsTraceCtx, transportTracer);
}
@Override
public void deframeFailed(Throwable cause) {
assertNull("deframeFailed already called", deframeFailedCause);
deframeFailedCause = cause;
}
@Override
public void bytesRead(int processedBytes) {}
@Override
public void runOnTransportThread(Runnable r) {
r.run();
}
}
}