ParallelLambdaExternalizationBenchmark.java

/*
 * Copyright 2019 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.drools.benchmarks.buildtime;

import java.io.IOException;
import java.io.StringReader;
import java.util.concurrent.TimeUnit;

import org.drools.benchmarks.common.DRLProvider;
import org.drools.benchmarks.common.providers.SimpleRulesWithConstraintsProvider;
import org.drools.benchmarks.common.util.BuildtimeUtil;
import org.kie.api.KieServices;
import org.kie.api.builder.ReleaseId;
import org.kie.api.io.Resource;
import org.kie.api.io.ResourceType;
import org.kie.internal.builder.conf.ExternaliseCanonicalModelLambdaOption;
import org.kie.internal.builder.conf.ParallelLambdaExternalizationOption;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
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.Warmup;

import static java.lang.String.valueOf;
import static java.lang.System.setProperty;

@State(Scope.Thread)
@BenchmarkMode(Mode.AverageTime)
@Warmup(iterations = 20, time = 3, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 3, timeUnit = TimeUnit.SECONDS)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@Fork(4)
public class ParallelLambdaExternalizationBenchmark {

    @Param({"disabled", "sequential", "parallel"})
    private String parallelLambdaExternalization;

    @Param({"1000"})
    private int numberOfRules;

    private Resource drlResource;


    @Setup
    public void createResource() {
        switch(parallelLambdaExternalization){
            case "disabled":
                setProperty(ExternaliseCanonicalModelLambdaOption.PROPERTY_NAME, valueOf(false)); break;
            case "sequential":
                setProperty(ExternaliseCanonicalModelLambdaOption.PROPERTY_NAME, valueOf(true));
                setProperty(ParallelLambdaExternalizationOption.PROPERTY_NAME, valueOf(false));
                break;
            case "parallel":
                setProperty(ExternaliseCanonicalModelLambdaOption.PROPERTY_NAME, valueOf(true));
                setProperty(ParallelLambdaExternalizationOption.PROPERTY_NAME, valueOf(true));
                break;
            default:
                throw new RuntimeException("a run option is expected");
        }

        final DRLProvider drlProvider = new SimpleRulesWithConstraintsProvider("Integer(this == ${i})");
        drlResource = KieServices.get().getResources()
                .newReaderResource(new StringReader(drlProvider.getDrl(numberOfRules)))
                .setResourceType(ResourceType.DRL)
                .setSourcePath("drlFile.drl");
    }

    @Benchmark
    public ReleaseId createKJarFromResource() throws IOException {
        return BuildtimeUtil.createKJarFromResources(true, drlResource);
    }

}