Java tutorial
/* * The MIT License * * Copyright (c) 2015 WANG Lingsong * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package org.jsfr.json; import com.google.common.io.Resources; import org.openjdk.jmh.annotations.Benchmark; import org.openjdk.jmh.annotations.Fork; import org.openjdk.jmh.annotations.Measurement; import org.openjdk.jmh.annotations.Param; 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; import org.openjdk.jmh.infra.Blackhole; import org.openjdk.jmh.runner.Runner; import org.openjdk.jmh.runner.RunnerException; import org.openjdk.jmh.runner.options.Options; import org.openjdk.jmh.runner.options.OptionsBuilder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import profilers.FlightRecordingProfiler; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.util.concurrent.TimeUnit; @Warmup(iterations = 10, time = 1, timeUnit = TimeUnit.SECONDS) @Measurement(iterations = 10, time = 1, timeUnit = TimeUnit.SECONDS) @Threads(1) @Fork(1) @State(Scope.Benchmark) public class BenchmarkParseLargeJson { private static final Logger LOGGER = LoggerFactory.getLogger(BenchmarkParseLargeJson.class); @Param({ "$.builders.*.properties.branch", "$.builders..properties.branch" }) private String jsonPath; private JsonSurfer simpleSurfer; private JsonSurfer gsonSurfer; private JsonSurfer jacksonSurfer; private SurfingConfiguration surfingConfiguration; private String json; @Setup public void setup(final Blackhole blackhole) throws IOException { simpleSurfer = JsonSurfer.simple(); gsonSurfer = JsonSurfer.gson(); jacksonSurfer = JsonSurfer.jackson(); JsonPathListener blackHoleListener = new JsonPathListener() { @Override public void onValue(Object value, ParsingContext context) throws Exception { LOGGER.trace("Properties: {}", value); blackhole.consume(value); } }; surfingConfiguration = SurfingConfiguration.builder().bind(jsonPath, blackHoleListener).skipOverlappedPath() .build(); json = Resources.toString(Resources.getResource("allthethings.json"), StandardCharsets.UTF_8); } @Benchmark public Object benchmarkJsonSimpleWithJsonSurfer() { simpleSurfer.surf(json, surfingConfiguration); return null; } @Benchmark public Object benchmarkGsonWithJsonSurfer() { gsonSurfer.surf(json, surfingConfiguration); return null; } @Benchmark public Object benchmarkJacksonWithJsonSurfer() { jacksonSurfer.surf(json, surfingConfiguration); return null; } public static void main(String[] args) throws RunnerException { Options opt = new OptionsBuilder().include(BenchmarkParseLargeJson.class.getSimpleName()) // .addProfiler(FlightRecordingProfiler.class) .build(); new Runner(opt).run(); } }