/*
 * Copyright (C) 2018-2020. Huawei Technologies Co., Ltd. All rights reserved.
 * 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.hetu.core.common.util;

import com.google.common.hash.Funnels;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
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.openjdk.jmh.runner.options.VerboseMode;

import java.nio.charset.Charset;
import java.util.concurrent.TimeUnit;

@State(Scope.Thread)
@OutputTimeUnit(TimeUnit.SECONDS)
@Fork(3)
@Warmup(iterations = 20, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 20, time = 500, timeUnit = TimeUnit.MILLISECONDS)
public class BenchmarkBloomFilter
{
    @Benchmark
    public void buildBloomFilter()
    {
        BloomFilter bf = new BloomFilter(1024 * 1024, 0.1);
        for (int i = 0; i < (1024 * 1024); i++) {
            bf.add(("item-" + i).getBytes());
        }
    }

    @Benchmark
    public void buildGuavaBloomFilter()
    {
        com.google.common.hash.BloomFilter bf = com.google.common.hash.BloomFilter.create(Funnels.stringFunnel(Charset.defaultCharset()), 1024 * 1024, 0.1);
        for (int i = 0; i < (1024 * 1024); i++) {
            bf.put("item-" + i);
        }
    }

    public static void main(String[] args)
            throws RunnerException
    {
        Options options = new OptionsBuilder()
                .verbosity(VerboseMode.NORMAL)
                .include(".*" + BenchmarkBloomFilter.class.getSimpleName() + ".*")
                .build();

        new Runner(options).run();
    }
}
