StatsTraceContextBenchmark.java

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package io.grpc.internal;

import io.grpc.CallOptions;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor;
import io.grpc.ServerStreamTracer;
import java.util.Collections;
import java.util.List;
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;

/**
 * Benchmark for {@link StatsTraceContext}.
 */
@State(Scope.Benchmark)
public class StatsTraceContextBenchmark {

  private final String methodName = MethodDescriptor.generateFullMethodName("service", "method");

  private final Metadata emptyMetadata = new Metadata();
  private final List<ServerStreamTracer.Factory> serverStreamTracerFactories =
      Collections.<ServerStreamTracer.Factory>emptyList();

  /**
   * Javadoc comment.
   */
  @Benchmark
  @BenchmarkMode(Mode.SampleTime)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  public StatsTraceContext newClientContext() {
    return StatsTraceContext.newClientContext(CallOptions.DEFAULT, emptyMetadata);
  }

  /**
   * Javadoc comment.
   */
  @Benchmark
  @BenchmarkMode(Mode.SampleTime)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  public StatsTraceContext newServerContext_empty() {
    return StatsTraceContext.newServerContext(
        serverStreamTracerFactories, methodName, emptyMetadata);
  }
}