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/*
* Copyright 2017, Google Inc.
* 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.opencensus.trace;
import io.opencensus.trace.base.AttributeValue;
import io.opencensus.trace.base.Link;
import io.opencensus.trace.base.NetworkEvent;
import io.opencensus.trace.samplers.Samplers;
import java.util.HashMap;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
/** Benchmarks for {@link SpanImpl} to record trace events. */
@State(Scope.Benchmark)
public class RecordTraceEventsSampledSpanBenchmark {
private static final Tracer tracer = Tracing.getTracer();
private static final String SPAN_NAME = "MySpanName";
private static final String ANNOTATION_DESCRIPTION = "MyAnnotation";
private static final String ATTRIBUTE_KEY = "MyAttributeKey";
private static final String ATTRIBUTE_VALUE = "MyAttributeValue";
private Span linkedSpan =
tracer.spanBuilder(null, SPAN_NAME).setSampler(Samplers.alwaysSample()).startSpan();
private Span span =
tracer.spanBuilder(null, SPAN_NAME).setSampler(Samplers.alwaysSample()).startSpan();
/** TearDown method. */
@TearDown
public void doTearDown() {
span.end();
linkedSpan.end();
}
/** This benchmark attempts to measure performance of adding an attribute to the span. */
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span addAttributes() {
HashMap<String, AttributeValue> attributes = new HashMap<String, AttributeValue>();
attributes.put(ATTRIBUTE_KEY, AttributeValue.stringAttributeValue(ATTRIBUTE_VALUE));
span.addAttributes(attributes);
return span;
}
/** This benchmark attempts to measure performance of adding an annotation to the span. */
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span addAnnotation() {
span.addAnnotation(ANNOTATION_DESCRIPTION);
return span;
}
/** This benchmark attempts to measure performance of adding a network event to the span. */
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span addNetworkEvent() {
span.addNetworkEvent(NetworkEvent.builder(NetworkEvent.Type.RECV, 1).setMessageSize(3).build());
return span;
}
/** This benchmark attempts to measure performance of adding a link to the span. */
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span addLink() {
span.addLink(Link.fromSpanContext(linkedSpan.getContext(), Link.Type.PARENT));
return span;
}
}
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