/*
 * Copyright The OpenTelemetry Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package io.opentelemetry.sdk.trace;

import io.opentelemetry.api.trace.Span;
import io.opentelemetry.api.trace.SpanBuilder;
import io.opentelemetry.api.trace.Tracer;
import io.opentelemetry.sdk.trace.samplers.Sampler;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Threads;
import org.openjdk.jmh.annotations.Warmup;

@State(Scope.Benchmark)
public class ExceptionBenchmark {
  private static SpanBuilder spanBuilder;

  @Setup(Level.Trial)
  public final void setup() {
    SdkTracerProvider tracerProvider =
        SdkTracerProvider.builder().setSampler(Sampler.alwaysOn()).build();

    Tracer tracer = tracerProvider.get("benchmarkTracer");
    spanBuilder = tracer.spanBuilder("benchmarkSpanBuilder");
  }

  @Benchmark
  @Threads(value = 1)
  @Fork(1)
  @Warmup(iterations = 5, time = 1)
  @Measurement(iterations = 10, time = 1)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  @BenchmarkMode(Mode.AverageTime)
  public Span createSpan() {
    Span span = spanBuilder.startSpan();
    span.end();
    return span;
  }

  @Benchmark
  @Threads(value = 1)
  @Fork(1)
  @Warmup(iterations = 5, time = 1)
  @Measurement(iterations = 10, time = 1)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  @BenchmarkMode(Mode.AverageTime)
  public Span createSpanAndRecordException() {
    Span span = spanBuilder.startSpan();
    span.recordException(new RuntimeException());
    span.end();
    return span;
  }

  @Benchmark
  @Threads(value = 1)
  @Fork(1)
  @Warmup(iterations = 5, time = 1)
  @Measurement(iterations = 10, time = 1)
  @OutputTimeUnit(TimeUnit.NANOSECONDS)
  @BenchmarkMode(Mode.AverageTime)
  public RuntimeException createException() {
    return new RuntimeException();
  }
}
