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CensusModulesTest.java
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CensusModulesTest.java
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/*
* Copyright 2017 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.census;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static io.grpc.census.CensusStatsModule.CallAttemptsTracerFactory.RETRIES_PER_CALL;
import static io.grpc.census.CensusStatsModule.CallAttemptsTracerFactory.RETRY_DELAY_PER_CALL;
import static io.grpc.census.CensusStatsModule.CallAttemptsTracerFactory.TRANSPARENT_RETRIES_PER_CALL;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
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.ArgumentMatchers.any;
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.never;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoInteractions;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
import com.google.common.collect.ImmutableList;
import io.grpc.Attributes;
import io.grpc.CallOptions;
import io.grpc.Channel;
import io.grpc.ClientCall;
import io.grpc.ClientInterceptor;
import io.grpc.ClientInterceptors;
import io.grpc.ClientStreamTracer;
import io.grpc.Context;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor;
import io.grpc.ServerCall;
import io.grpc.ServerCallHandler;
import io.grpc.ServerServiceDefinition;
import io.grpc.ServerStreamTracer;
import io.grpc.ServerStreamTracer.ServerCallInfo;
import io.grpc.Status;
import io.grpc.census.CensusTracingModule.CallAttemptsTracerFactory;
import io.grpc.census.internal.DeprecatedCensusConstants;
import io.grpc.internal.FakeClock;
import io.grpc.internal.testing.StatsTestUtils;
import io.grpc.internal.testing.StatsTestUtils.FakeStatsRecorder;
import io.grpc.internal.testing.StatsTestUtils.FakeTagContextBinarySerializer;
import io.grpc.internal.testing.StatsTestUtils.FakeTagger;
import io.grpc.internal.testing.StatsTestUtils.MockableSpan;
import io.grpc.testing.GrpcServerRule;
import io.opencensus.common.Function;
import io.opencensus.common.Functions;
import io.opencensus.contrib.grpc.metrics.RpcMeasureConstants;
import io.opencensus.contrib.grpc.metrics.RpcViewConstants;
import io.opencensus.impl.stats.StatsComponentImpl;
import io.opencensus.stats.AggregationData;
import io.opencensus.stats.AggregationData.CountData;
import io.opencensus.stats.AggregationData.LastValueDataDouble;
import io.opencensus.stats.AggregationData.LastValueDataLong;
import io.opencensus.stats.AggregationData.SumDataDouble;
import io.opencensus.stats.Measure;
import io.opencensus.stats.StatsComponent;
import io.opencensus.stats.View;
import io.opencensus.tags.TagContext;
import io.opencensus.tags.TagValue;
import io.opencensus.trace.AttributeValue;
import io.opencensus.trace.BlankSpan;
import io.opencensus.trace.EndSpanOptions;
import io.opencensus.trace.MessageEvent;
import io.opencensus.trace.Span;
import io.opencensus.trace.SpanBuilder;
import io.opencensus.trace.SpanContext;
import io.opencensus.trace.Tracer;
import io.opencensus.trace.propagation.BinaryFormat;
import io.opencensus.trace.propagation.SpanContextParseException;
import java.io.InputStream;
import java.util.HashSet;
import java.util.List;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;
import javax.annotation.Nullable;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.ArgumentCaptor;
import org.mockito.ArgumentMatchers;
import org.mockito.Captor;
import org.mockito.InOrder;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;
/**
* Test for {@link CensusStatsModule} and {@link CensusTracingModule}.
*/
@RunWith(JUnit4.class)
public class CensusModulesTest {
private static final CallOptions.Key<String> CUSTOM_OPTION =
CallOptions.Key.createWithDefault("option1", "default");
private static final CallOptions CALL_OPTIONS =
CallOptions.DEFAULT.withOption(CUSTOM_OPTION, "customvalue");
private static final ClientStreamTracer.StreamInfo STREAM_INFO =
ClientStreamTracer.StreamInfo.newBuilder().build();
private static class StringInputStream extends InputStream {
final String string;
StringInputStream(String string) {
this.string = string;
}
@Override
public int read() {
// InProcessTransport doesn't actually read bytes from the InputStream. The InputStream is
// passed to the InProcess server and consumed by MARSHALLER.parse().
throw new UnsupportedOperationException("Should not be called");
}
}
private static final MethodDescriptor.Marshaller<String> MARSHALLER =
new MethodDescriptor.Marshaller<String>() {
@Override
public InputStream stream(String value) {
return new StringInputStream(value);
}
@Override
public String parse(InputStream stream) {
return ((StringInputStream) stream).string;
}
};
@Rule
public final MockitoRule mocks = MockitoJUnit.rule();
private final MethodDescriptor<String, String> method =
MethodDescriptor.<String, String>newBuilder()
.setType(MethodDescriptor.MethodType.UNKNOWN)
.setRequestMarshaller(MARSHALLER)
.setResponseMarshaller(MARSHALLER)
.setFullMethodName("package1.service2/method3")
.build();
private final MethodDescriptor<String, String> sampledMethod =
method.toBuilder().setSampledToLocalTracing(true).build();
private final FakeClock fakeClock = new FakeClock();
private final FakeTagger tagger = new FakeTagger();
private final FakeTagContextBinarySerializer tagCtxSerializer =
new FakeTagContextBinarySerializer();
private final FakeStatsRecorder statsRecorder = new FakeStatsRecorder();
private final Random random = new Random(1234);
private final Span fakeClientParentSpan = MockableSpan.generateRandomSpan(random);
private final Span spyClientSpan = spy(MockableSpan.generateRandomSpan(random));
private final Span spyAttemptSpan = spy(MockableSpan.generateRandomSpan(random));
private final SpanContext fakeAttemptSpanContext = spyAttemptSpan.getContext();
private final Span spyServerSpan = spy(MockableSpan.generateRandomSpan(random));
private final byte[] binarySpanContext = new byte[]{3, 1, 5};
private final SpanBuilder spyClientSpanBuilder = spy(new MockableSpan.Builder());
private final SpanBuilder spyAttemptSpanBuilder = spy(new MockableSpan.Builder());
private final SpanBuilder spyServerSpanBuilder = spy(new MockableSpan.Builder());
@Rule
public final GrpcServerRule grpcServerRule = new GrpcServerRule().directExecutor();
@Mock
private Tracer tracer;
@Mock
private BinaryFormat mockTracingPropagationHandler;
@Mock
private ClientCall.Listener<String> mockClientCallListener;
@Mock
private ServerCall.Listener<String> mockServerCallListener;
@Captor
private ArgumentCaptor<Status> statusCaptor;
@Captor
private ArgumentCaptor<MessageEvent> messageEventCaptor;
private CensusStatsModule censusStats;
private CensusTracingModule censusTracing;
@Before
public void setUp() throws Exception {
when(spyClientSpanBuilder.startSpan()).thenReturn(spyClientSpan);
when(spyAttemptSpanBuilder.startSpan()).thenReturn(spyAttemptSpan);
when(tracer.spanBuilderWithExplicitParent(
eq("Sent.package1.service2.method3"), ArgumentMatchers.<Span>any()))
.thenReturn(spyClientSpanBuilder);
when(tracer.spanBuilderWithExplicitParent(
eq("Attempt.package1.service2.method3"), ArgumentMatchers.<Span>any()))
.thenReturn(spyAttemptSpanBuilder);
when(spyServerSpanBuilder.startSpan()).thenReturn(spyServerSpan);
when(tracer.spanBuilderWithRemoteParent(anyString(), ArgumentMatchers.<SpanContext>any()))
.thenReturn(spyServerSpanBuilder);
when(mockTracingPropagationHandler.toByteArray(any(SpanContext.class)))
.thenReturn(binarySpanContext);
when(mockTracingPropagationHandler.fromByteArray(any(byte[].class)))
.thenReturn(fakeAttemptSpanContext);
censusStats =
new CensusStatsModule(
tagger, tagCtxSerializer, statsRecorder, fakeClock.getStopwatchSupplier(),
true, true, true, false /* real-time */, true);
censusTracing = new CensusTracingModule(tracer, mockTracingPropagationHandler);
}
@After
public void wrapUp() {
assertNull(statsRecorder.pollRecord());
}
@Test
public void clientInterceptorNoCustomTag() {
testClientInterceptors(false);
}
@Test
public void clientInterceptorCustomTag() {
testClientInterceptors(true);
}
// Test that Census ClientInterceptors uses the TagContext and Span out of the current Context
// to create the ClientCallTracer, and that it intercepts ClientCall.Listener.onClose() to call
// ClientCallTracer.callEnded().
@SuppressWarnings("deprecation")
private void testClientInterceptors(boolean nonDefaultContext) {
grpcServerRule.getServiceRegistry().addService(
ServerServiceDefinition.builder("package1.service2").addMethod(
method, new ServerCallHandler<String, String>() {
@Override
public ServerCall.Listener<String> startCall(
ServerCall<String, String> call, Metadata headers) {
call.sendHeaders(new Metadata());
call.sendMessage("Hello");
call.close(
Status.PERMISSION_DENIED.withDescription("No you don't"), new Metadata());
return mockServerCallListener;
}
}).build());
final AtomicReference<CallOptions> capturedCallOptions = new AtomicReference<>();
ClientInterceptor callOptionsCaptureInterceptor = new ClientInterceptor() {
@Override
public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(
MethodDescriptor<ReqT, RespT> method, CallOptions callOptions, Channel next) {
capturedCallOptions.set(callOptions);
return next.newCall(method, callOptions);
}
};
Channel interceptedChannel =
ClientInterceptors.intercept(
grpcServerRule.getChannel(), callOptionsCaptureInterceptor,
censusStats.getClientInterceptor(), censusTracing.getClientInterceptor());
ClientCall<String, String> call;
if (nonDefaultContext) {
Context ctx =
io.opencensus.tags.unsafe.ContextUtils.withValue(
Context.ROOT,
tagger
.emptyBuilder()
.putLocal(StatsTestUtils.EXTRA_TAG, TagValue.create("extra value"))
.build());
ctx = io.opencensus.trace.unsafe.ContextUtils.withValue(ctx, fakeClientParentSpan);
Context origCtx = ctx.attach();
try {
call = interceptedChannel.newCall(method, CALL_OPTIONS);
} finally {
ctx.detach(origCtx);
}
} else {
assertEquals(
io.opencensus.tags.unsafe.ContextUtils.getValue(Context.ROOT),
io.opencensus.tags.unsafe.ContextUtils.getValue(Context.current()));
assertEquals(io.opencensus.trace.unsafe.ContextUtils.getValue(Context.current()),
BlankSpan.INSTANCE);
call = interceptedChannel.newCall(method, CALL_OPTIONS);
}
// The interceptor adds tracer factory to CallOptions
assertEquals("customvalue", capturedCallOptions.get().getOption(CUSTOM_OPTION));
assertEquals(2, capturedCallOptions.get().getStreamTracerFactories().size());
assertTrue(
capturedCallOptions.get().getStreamTracerFactories().get(0)
instanceof CallAttemptsTracerFactory);
assertTrue(
capturedCallOptions.get().getStreamTracerFactories().get(1)
instanceof CensusStatsModule.CallAttemptsTracerFactory);
// Make the call
Metadata headers = new Metadata();
call.start(mockClientCallListener, headers);
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
assertNotNull(record);
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
if (nonDefaultContext) {
TagValue extraTag = record.tags.get(StatsTestUtils.EXTRA_TAG);
assertEquals("extra value", extraTag.asString());
assertEquals(2, record.tags.size());
} else {
assertNull(record.tags.get(StatsTestUtils.EXTRA_TAG));
assertEquals(1, record.tags.size());
}
if (nonDefaultContext) {
verify(tracer).spanBuilderWithExplicitParent(
eq("Sent.package1.service2.method3"), same(fakeClientParentSpan));
verify(spyClientSpanBuilder).setRecordEvents(eq(true));
} else {
verify(tracer).spanBuilderWithExplicitParent(
eq("Sent.package1.service2.method3"), ArgumentMatchers.<Span>isNotNull());
verify(spyClientSpanBuilder).setRecordEvents(eq(true));
}
verify(spyClientSpan, never()).end(any(EndSpanOptions.class));
// End the call
call.halfClose();
call.request(1);
verify(mockClientCallListener).onClose(statusCaptor.capture(), any(Metadata.class));
Status status = statusCaptor.getValue();
assertEquals(Status.Code.PERMISSION_DENIED, status.getCode());
assertEquals("No you don't", status.getDescription());
// The intercepting listener calls callEnded() on ClientCallTracer, which records to Census.
record = statsRecorder.pollRecord();
assertNotNull(record);
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
TagValue statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.PERMISSION_DENIED.toString(), statusTag.asString());
if (nonDefaultContext) {
TagValue extraTag = record.tags.get(StatsTestUtils.EXTRA_TAG);
assertEquals("extra value", extraTag.asString());
} else {
assertNull(record.tags.get(StatsTestUtils.EXTRA_TAG));
}
verify(spyClientSpan).end(
EndSpanOptions.builder()
.setStatus(
io.opencensus.trace.Status.PERMISSION_DENIED
.withDescription("No you don't"))
.setSampleToLocalSpanStore(false)
.build());
verify(spyClientSpan, never()).end();
assertZeroRetryRecorded();
}
@Test
public void clientBasicStatsDefaultContext_starts_finishes_noRealTime() {
subtestClientBasicStatsDefaultContext(true, true, false);
}
@Test
public void clientBasicStatsDefaultContext_starts_noFinishes_noRealTime() {
subtestClientBasicStatsDefaultContext(true, false, false);
}
@Test
public void clientBasicStatsDefaultContext_noStarts_finishes_noRealTime() {
subtestClientBasicStatsDefaultContext(false, true, false);
}
@Test
public void clientBasicStatsDefaultContext_noStarts_noFinishes_noRealTime() {
subtestClientBasicStatsDefaultContext(false, false, false);
}
@Test
public void clientBasicStatsDefaultContext_starts_finishes_realTime() {
subtestClientBasicStatsDefaultContext(true, true, true);
}
private void subtestClientBasicStatsDefaultContext(
boolean recordStarts, boolean recordFinishes, boolean recordRealTime) {
CensusStatsModule localCensusStats =
new CensusStatsModule(
tagger, tagCtxSerializer, statsRecorder, fakeClock.getStopwatchSupplier(),
true, recordStarts, recordFinishes, recordRealTime, true);
CensusStatsModule.CallAttemptsTracerFactory callAttemptsTracerFactory =
new CensusStatsModule.CallAttemptsTracerFactory(
localCensusStats, tagger.empty(), method.getFullMethodName());
Metadata headers = new Metadata();
ClientStreamTracer tracer =
callAttemptsTracerFactory.newClientStreamTracer(STREAM_INFO, headers);
if (recordStarts) {
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
assertNotNull(record);
assertNoServerContent(record);
assertEquals(1, record.tags.size());
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_STARTED_COUNT));
} else {
assertNull(statsRecorder.pollRecord());
}
fakeClock.forwardTime(30, MILLISECONDS);
tracer.outboundHeaders();
fakeClock.forwardTime(100, MILLISECONDS);
tracer.outboundMessage(0);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, recordRealTime, true);
tracer.outboundWireSize(1028);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_BYTES_PER_METHOD, 1028, recordRealTime, true);
tracer.outboundUncompressedSize(1128);
fakeClock.forwardTime(16, MILLISECONDS);
tracer.inboundMessage(0);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_RECEIVED_MESSAGES_PER_METHOD, 1, recordRealTime, true);
tracer.inboundWireSize(33);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_RECEIVED_BYTES_PER_METHOD, 33, recordRealTime, true);
tracer.inboundUncompressedSize(67);
tracer.outboundMessage(1);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, recordRealTime, true);
tracer.outboundWireSize(99);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_BYTES_PER_METHOD, 99, recordRealTime, true);
tracer.outboundUncompressedSize(865);
fakeClock.forwardTime(24, MILLISECONDS);
tracer.inboundMessage(1);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_RECEIVED_MESSAGES_PER_METHOD, 1, recordRealTime, true);
tracer.inboundWireSize(154);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_RECEIVED_BYTES_PER_METHOD, 154, recordRealTime, true);
tracer.inboundUncompressedSize(552);
tracer.streamClosed(Status.OK);
callAttemptsTracerFactory.callEnded(Status.OK);
if (recordFinishes) {
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
assertNotNull(record);
assertNoServerContent(record);
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
TagValue statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.OK.toString(), statusTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_FINISHED_COUNT));
assertNull(record.getMetric(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT));
assertEquals(
2, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_COUNT));
assertEquals(
1028 + 99,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_BYTES));
assertEquals(
1128 + 865,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_REQUEST_BYTES));
assertEquals(
2, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_RESPONSE_COUNT));
assertEquals(
33 + 154,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_RESPONSE_BYTES));
assertEquals(
67 + 552,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_RESPONSE_BYTES));
assertEquals(30 + 100 + 16 + 24,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ROUNDTRIP_LATENCY));
assertZeroRetryRecorded();
} else {
assertNull(statsRecorder.pollRecord());
}
}
// This test is only unit-testing the stat recording logic. The retry behavior is faked.
@Test
public void recordRetryStats() {
CensusStatsModule localCensusStats =
new CensusStatsModule(
tagger, tagCtxSerializer, statsRecorder, fakeClock.getStopwatchSupplier(),
true, true, true, true, true);
CensusStatsModule.CallAttemptsTracerFactory callAttemptsTracerFactory =
new CensusStatsModule.CallAttemptsTracerFactory(
localCensusStats, tagger.empty(), method.getFullMethodName());
ClientStreamTracer tracer =
callAttemptsTracerFactory.newClientStreamTracer(STREAM_INFO, new Metadata());
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
assertEquals(1, record.tags.size());
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_STARTED_COUNT));
fakeClock.forwardTime(30, MILLISECONDS);
tracer.outboundHeaders();
fakeClock.forwardTime(100, MILLISECONDS);
tracer.outboundMessage(0);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, true, true);
tracer.outboundMessage(1);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, true, true);
tracer.outboundWireSize(1028);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_BYTES_PER_METHOD, 1028, true, true);
tracer.outboundUncompressedSize(1128);
fakeClock.forwardTime(24, MILLISECONDS);
tracer.streamClosed(Status.UNAVAILABLE);
record = statsRecorder.pollRecord();
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
TagValue statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.UNAVAILABLE.toString(), statusTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_FINISHED_COUNT));
assertEquals(1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT));
assertEquals(
2, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_COUNT));
assertEquals(
1028, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_BYTES));
assertEquals(
1128,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_REQUEST_BYTES));
assertEquals(
30 + 100 + 24,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ROUNDTRIP_LATENCY));
// faking retry
fakeClock.forwardTime(1000, MILLISECONDS);
tracer = callAttemptsTracerFactory.newClientStreamTracer(STREAM_INFO, new Metadata());
record = statsRecorder.pollRecord();
assertEquals(1, record.tags.size());
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_STARTED_COUNT));
tracer.outboundHeaders();
tracer.outboundMessage(0);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, true, true);
tracer.outboundMessage(1);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, true, true);
tracer.outboundWireSize(1028);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_BYTES_PER_METHOD, 1028, true, true);
tracer.outboundUncompressedSize(1128);
fakeClock.forwardTime(100, MILLISECONDS);
tracer.streamClosed(Status.NOT_FOUND);
record = statsRecorder.pollRecord();
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.NOT_FOUND.toString(), statusTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_FINISHED_COUNT));
assertEquals(1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT));
assertEquals(
2, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_COUNT));
assertEquals(
1028, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_BYTES));
assertEquals(
1128,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_REQUEST_BYTES));
assertEquals(
100 ,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ROUNDTRIP_LATENCY));
// fake transparent retry
fakeClock.forwardTime(10, MILLISECONDS);
tracer = callAttemptsTracerFactory.newClientStreamTracer(
STREAM_INFO.toBuilder().setIsTransparentRetry(true).build(), new Metadata());
record = statsRecorder.pollRecord();
assertEquals(1, record.tags.size());
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_STARTED_COUNT));
tracer.streamClosed(Status.UNAVAILABLE);
record = statsRecorder.pollRecord();
statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.UNAVAILABLE.toString(), statusTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_FINISHED_COUNT));
assertEquals(1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT));
assertEquals(
0, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_COUNT));
assertEquals(
0, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_BYTES));
// fake another transparent retry
fakeClock.forwardTime(10, MILLISECONDS);
tracer = callAttemptsTracerFactory.newClientStreamTracer(
STREAM_INFO.toBuilder().setIsTransparentRetry(true).build(), new Metadata());
record = statsRecorder.pollRecord();
assertEquals(1, record.tags.size());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_STARTED_COUNT));
tracer.outboundHeaders();
tracer.outboundMessage(0);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, true, true);
tracer.outboundMessage(1);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_MESSAGES_PER_METHOD, 1, true, true);
tracer.outboundWireSize(1028);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_SENT_BYTES_PER_METHOD, 1028, true, true);
tracer.outboundUncompressedSize(1128);
fakeClock.forwardTime(16, MILLISECONDS);
tracer.inboundMessage(0);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_RECEIVED_MESSAGES_PER_METHOD, 1, true, true);
tracer.inboundWireSize(33);
assertRealTimeMetric(
RpcMeasureConstants.GRPC_CLIENT_RECEIVED_BYTES_PER_METHOD, 33, true, true);
tracer.inboundUncompressedSize(67);
fakeClock.forwardTime(24, MILLISECONDS);
// RPC succeeded
tracer.streamClosed(Status.OK);
callAttemptsTracerFactory.callEnded(Status.OK);
record = statsRecorder.pollRecord();
statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.OK.toString(), statusTag.asString());
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_FINISHED_COUNT));
assertThat(record.getMetric(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT)).isNull();
assertEquals(
2, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_COUNT));
assertEquals(
1028, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_BYTES));
assertEquals(
1128,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_REQUEST_BYTES));
assertEquals(
1, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_RESPONSE_COUNT));
assertEquals(
33,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_RESPONSE_BYTES));
assertEquals(
67,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_RESPONSE_BYTES));
assertEquals(
16 + 24 ,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ROUNDTRIP_LATENCY));
record = statsRecorder.pollRecord();
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.OK.toString(), statusTag.asString());
assertThat(record.getMetric(RETRIES_PER_CALL)).isEqualTo(1);
assertThat(record.getMetric(TRANSPARENT_RETRIES_PER_CALL)).isEqualTo(2);
assertThat(record.getMetric(RETRY_DELAY_PER_CALL)).isEqualTo(1000D + 10 + 10);
}
private void assertRealTimeMetric(
Measure measure, long expectedValue, boolean recordRealTimeMetrics, boolean clientSide) {
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
if (!recordRealTimeMetrics) {
assertNull(record);
return;
}
assertNotNull(record);
if (clientSide) {
assertNoServerContent(record);
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
} else {
assertNoClientContent(record);
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_SERVER_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
}
assertEquals(expectedValue, record.getMetricAsLongOrFail(measure));
}
private void assertZeroRetryRecorded() {
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
assertThat(record.getMetric(RETRIES_PER_CALL)).isEqualTo(0);
assertThat(record.getMetric(TRANSPARENT_RETRIES_PER_CALL)).isEqualTo(0);
assertThat(record.getMetric(RETRY_DELAY_PER_CALL)).isEqualTo(0D);
}
@Test
public void clientBasicTracingDefaultSpan() {
CallAttemptsTracerFactory callTracer =
censusTracing.newClientCallTracer(null, method);
Metadata headers = new Metadata();
ClientStreamTracer clientStreamTracer = callTracer.newClientStreamTracer(STREAM_INFO, headers);
clientStreamTracer.streamCreated(Attributes.EMPTY, headers);
verify(tracer).spanBuilderWithExplicitParent(
eq("Sent.package1.service2.method3"), ArgumentMatchers.<Span>isNull());
verify(tracer).spanBuilderWithExplicitParent(
eq("Attempt.package1.service2.method3"), eq(spyClientSpan));
verify(spyClientSpan, never()).end(any(EndSpanOptions.class));
verify(spyAttemptSpan, never()).end(any(EndSpanOptions.class));
clientStreamTracer.outboundMessage(0);
clientStreamTracer.outboundMessageSent(0, 882, -1);
clientStreamTracer.inboundMessage(0);
clientStreamTracer.outboundMessage(1);
clientStreamTracer.outboundMessageSent(1, -1, 27);
clientStreamTracer.inboundMessageRead(0, 255, 90);
clientStreamTracer.streamClosed(Status.OK);
callTracer.callEnded(Status.OK);
InOrder inOrder = inOrder(spyClientSpan, spyAttemptSpan);
inOrder.verify(spyAttemptSpan)
.putAttribute("previous-rpc-attempts", AttributeValue.longAttributeValue(0));
inOrder.verify(spyAttemptSpan)
.putAttribute("transparent-retry", AttributeValue.booleanAttributeValue(false));
inOrder.verify(spyAttemptSpan, times(3)).addMessageEvent(messageEventCaptor.capture());
List<MessageEvent> events = messageEventCaptor.getAllValues();
assertEquals(
MessageEvent.builder(MessageEvent.Type.SENT, 0).setCompressedMessageSize(882).build(),
events.get(0));
assertEquals(
MessageEvent.builder(MessageEvent.Type.SENT, 1).setUncompressedMessageSize(27).build(),
events.get(1));
assertEquals(
MessageEvent.builder(MessageEvent.Type.RECEIVED, 0)
.setCompressedMessageSize(255)
.setUncompressedMessageSize(90)
.build(),
events.get(2));
inOrder.verify(spyAttemptSpan).end(
EndSpanOptions.builder()
.setStatus(io.opencensus.trace.Status.OK)
.setSampleToLocalSpanStore(false)
.build());
inOrder.verify(spyClientSpan).end(
EndSpanOptions.builder()
.setStatus(io.opencensus.trace.Status.OK)
.setSampleToLocalSpanStore(false)
.build());
inOrder.verifyNoMoreInteractions();
verifyNoMoreInteractions(tracer);
}
@Test
public void clientTracingSampledToLocalSpanStore() {
CallAttemptsTracerFactory callTracer =
censusTracing.newClientCallTracer(null, sampledMethod);
callTracer.callEnded(Status.OK);
verify(spyClientSpan).end(
EndSpanOptions.builder()
.setStatus(io.opencensus.trace.Status.OK)
.setSampleToLocalSpanStore(true)
.build());
}
@Test
public void clientStreamNeverCreatedStillRecordStats() {
CensusStatsModule.CallAttemptsTracerFactory callAttemptsTracerFactory =
new CensusStatsModule.CallAttemptsTracerFactory(
censusStats, tagger.empty(), method.getFullMethodName());
ClientStreamTracer streamTracer =
callAttemptsTracerFactory.newClientStreamTracer(STREAM_INFO, new Metadata());
fakeClock.forwardTime(3000, MILLISECONDS);
Status status = Status.DEADLINE_EXCEEDED.withDescription("3 seconds");
streamTracer.streamClosed(status);
callAttemptsTracerFactory.callEnded(status);
// Upstart record
StatsTestUtils.MetricsRecord record = statsRecorder.pollRecord();
assertNotNull(record);
assertNoServerContent(record);
assertEquals(1, record.tags.size());
TagValue methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
assertEquals(
1,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_STARTED_COUNT));
// Completion record
record = statsRecorder.pollRecord();
assertNotNull(record);
assertNoServerContent(record);
methodTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), methodTag.asString());
TagValue statusTag = record.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.DEADLINE_EXCEEDED.toString(), statusTag.asString());
assertEquals(
1,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_FINISHED_COUNT));
assertEquals(
1,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT));
assertEquals(
0, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_COUNT));
assertEquals(
0, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_REQUEST_BYTES));
assertEquals(
0,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_REQUEST_BYTES));
assertEquals(
0, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_RESPONSE_COUNT));
assertEquals(
0, record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_RESPONSE_BYTES));
assertEquals(0,
record.getMetricAsLongOrFail(
DeprecatedCensusConstants.RPC_CLIENT_UNCOMPRESSED_RESPONSE_BYTES));
assertEquals(
3000,
record.getMetricAsLongOrFail(DeprecatedCensusConstants.RPC_CLIENT_ROUNDTRIP_LATENCY));
assertNull(record.getMetric(DeprecatedCensusConstants.RPC_CLIENT_SERVER_ELAPSED_TIME));
assertZeroRetryRecorded();
}
@Test
public void clientStreamNeverCreatedStillRecordTracing() {
CallAttemptsTracerFactory callTracer =
censusTracing.newClientCallTracer(fakeClientParentSpan, method);
verify(tracer).spanBuilderWithExplicitParent(
eq("Sent.package1.service2.method3"), same(fakeClientParentSpan));
verify(spyClientSpanBuilder).setRecordEvents(eq(true));
callTracer.callEnded(Status.DEADLINE_EXCEEDED.withDescription("3 seconds"));
verify(spyClientSpan).end(
EndSpanOptions.builder()
.setStatus(
io.opencensus.trace.Status.DEADLINE_EXCEEDED
.withDescription("3 seconds"))
.setSampleToLocalSpanStore(false)
.build());
verifyNoMoreInteractions(spyClientSpan);
}
@Test
public void statsHeadersPropagateTags_record() {
subtestStatsHeadersPropagateTags(true, true);
}
@Test
public void statsHeadersPropagateTags_notRecord() {
subtestStatsHeadersPropagateTags(true, false);
}
@Test
public void statsHeadersNotPropagateTags_record() {
subtestStatsHeadersPropagateTags(false, true);
}
@Test
public void statsHeadersNotPropagateTags_notRecord() {
subtestStatsHeadersPropagateTags(false, false);
}
private void subtestStatsHeadersPropagateTags(boolean propagate, boolean recordStats) {
// EXTRA_TAG is propagated by the FakeStatsContextFactory. Note that not all tags are
// propagated. The StatsContextFactory decides which tags are to propagated. gRPC facilitates
// the propagation by putting them in the headers.
TagContext clientCtx = tagger.emptyBuilder().putLocal(
StatsTestUtils.EXTRA_TAG, TagValue.create("extra-tag-value-897")).build();
CensusStatsModule census =
new CensusStatsModule(
tagger,
tagCtxSerializer,
statsRecorder,
fakeClock.getStopwatchSupplier(),
propagate, recordStats, recordStats, recordStats, recordStats);
Metadata headers = new Metadata();
CensusStatsModule.CallAttemptsTracerFactory callAttemptsTracerFactory =
new CensusStatsModule.CallAttemptsTracerFactory(
census, clientCtx, method.getFullMethodName());
// This propagates clientCtx to headers if propagates==true
ClientStreamTracer streamTracer =
callAttemptsTracerFactory.newClientStreamTracer(STREAM_INFO, headers);
streamTracer.streamCreated(Attributes.EMPTY, headers);
if (recordStats) {
// Client upstart record
StatsTestUtils.MetricsRecord clientRecord = statsRecorder.pollRecord();
assertNotNull(clientRecord);
assertNoServerContent(clientRecord);
assertEquals(2, clientRecord.tags.size());
TagValue clientMethodTag = clientRecord.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), clientMethodTag.asString());
TagValue clientPropagatedTag = clientRecord.tags.get(StatsTestUtils.EXTRA_TAG);
assertEquals("extra-tag-value-897", clientPropagatedTag.asString());
}
if (propagate) {
assertTrue(headers.containsKey(census.statsHeader));
} else {
assertFalse(headers.containsKey(census.statsHeader));
return;
}
ServerStreamTracer serverTracer =
census.getServerTracerFactory().newServerStreamTracer(method.getFullMethodName(), headers);
// Server tracer deserializes clientCtx from the headers, so that it records stats with the
// propagated tags.
Context serverContext = serverTracer.filterContext(Context.ROOT);
// It also put clientCtx in the Context seen by the call handler
assertEquals(
tagger.toBuilder(clientCtx)
.putLocal(
RpcMeasureConstants.GRPC_SERVER_METHOD,
TagValue.create(method.getFullMethodName()))
.build(),
io.opencensus.tags.unsafe.ContextUtils.getValue(serverContext));
// Verifies that the server tracer records the status with the propagated tag
serverTracer.streamClosed(Status.OK);
if (recordStats) {
// Server upstart record
StatsTestUtils.MetricsRecord serverRecord = statsRecorder.pollRecord();
assertNotNull(serverRecord);
assertNoClientContent(serverRecord);
assertEquals(2, serverRecord.tags.size());
TagValue serverMethodTag = serverRecord.tags.get(RpcMeasureConstants.GRPC_SERVER_METHOD);
assertEquals(method.getFullMethodName(), serverMethodTag.asString());
TagValue serverPropagatedTag = serverRecord.tags.get(StatsTestUtils.EXTRA_TAG);
assertEquals("extra-tag-value-897", serverPropagatedTag.asString());
// Server completion record
serverRecord = statsRecorder.pollRecord();
assertNotNull(serverRecord);
assertNoClientContent(serverRecord);
serverMethodTag = serverRecord.tags.get(RpcMeasureConstants.GRPC_SERVER_METHOD);
assertEquals(method.getFullMethodName(), serverMethodTag.asString());
TagValue serverStatusTag = serverRecord.tags.get(RpcMeasureConstants.GRPC_SERVER_STATUS);
assertEquals(Status.Code.OK.toString(), serverStatusTag.asString());
assertNull(serverRecord.getMetric(DeprecatedCensusConstants.RPC_SERVER_ERROR_COUNT));
serverPropagatedTag = serverRecord.tags.get(StatsTestUtils.EXTRA_TAG);
assertEquals("extra-tag-value-897", serverPropagatedTag.asString());
}
// Verifies that the client tracer factory uses clientCtx, which includes the custom tags, to
// record stats.
streamTracer.streamClosed(Status.OK);
callAttemptsTracerFactory.callEnded(Status.OK);
if (recordStats) {
// Client completion record
StatsTestUtils.MetricsRecord clientRecord = statsRecorder.pollRecord();
assertNotNull(clientRecord);
assertNoServerContent(clientRecord);
TagValue clientMethodTag = clientRecord.tags.get(RpcMeasureConstants.GRPC_CLIENT_METHOD);
assertEquals(method.getFullMethodName(), clientMethodTag.asString());
TagValue clientStatusTag = clientRecord.tags.get(RpcMeasureConstants.GRPC_CLIENT_STATUS);
assertEquals(Status.Code.OK.toString(), clientStatusTag.asString());
assertNull(clientRecord.getMetric(DeprecatedCensusConstants.RPC_CLIENT_ERROR_COUNT));
TagValue clientPropagatedTag = clientRecord.tags.get(StatsTestUtils.EXTRA_TAG);
assertEquals("extra-tag-value-897", clientPropagatedTag.asString());
assertZeroRetryRecorded();
}