| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.maven.lifecycle.internal.builder.multithreaded; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.PrintStream; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CompletionService; |
| import java.util.concurrent.ExecutorCompletionService; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| |
| import org.apache.maven.execution.MavenSession; |
| import org.apache.maven.lifecycle.LifecycleNotFoundException; |
| import org.apache.maven.lifecycle.LifecyclePhaseNotFoundException; |
| import org.apache.maven.lifecycle.internal.ProjectBuildList; |
| import org.apache.maven.lifecycle.internal.ProjectSegment; |
| import org.apache.maven.lifecycle.internal.stub.ProjectDependencyGraphStub; |
| import org.apache.maven.plugin.InvalidPluginDescriptorException; |
| import org.apache.maven.plugin.MojoNotFoundException; |
| import org.apache.maven.plugin.PluginDescriptorParsingException; |
| import org.apache.maven.plugin.PluginNotFoundException; |
| import org.apache.maven.plugin.PluginResolutionException; |
| import org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException; |
| import org.apache.maven.plugin.version.PluginVersionResolutionException; |
| import org.junit.jupiter.api.Test; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| |
| /** |
| */ |
| class ThreadOutputMuxerTest { |
| |
| final String paid = "Paid"; |
| |
| final String in = "In"; |
| |
| final String full = "Full"; |
| |
| @Test |
| void testSingleThreaded() throws Exception { |
| ProjectBuildList src = getProjectBuildList(); |
| ProjectBuildList projectBuildList = new ProjectBuildList(Arrays.asList(src.get(0), src.get(1), src.get(2))); |
| |
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); |
| PrintStream systemOut = new PrintStream(byteArrayOutputStream); |
| ThreadOutputMuxer threadOutputMuxer = new ThreadOutputMuxer(projectBuildList, systemOut); |
| |
| threadOutputMuxer.associateThreadWithProjectSegment(projectBuildList.get(0)); |
| System.out.print(paid); // No, this does not print to system.out. It's part of the test |
| assertEquals(paid.length(), byteArrayOutputStream.size()); |
| threadOutputMuxer.associateThreadWithProjectSegment(projectBuildList.get(1)); |
| System.out.print(in); // No, this does not print to system.out. It's part of the test |
| assertEquals(paid.length(), byteArrayOutputStream.size()); |
| threadOutputMuxer.associateThreadWithProjectSegment(projectBuildList.get(2)); |
| System.out.print(full); // No, this does not print to system.out. It's part of the test |
| assertEquals(paid.length(), byteArrayOutputStream.size()); |
| |
| threadOutputMuxer.setThisModuleComplete(projectBuildList.get(0)); |
| threadOutputMuxer.setThisModuleComplete(projectBuildList.get(1)); |
| threadOutputMuxer.setThisModuleComplete(projectBuildList.get(2)); |
| threadOutputMuxer.close(); |
| assertEquals((paid + in + full).length(), byteArrayOutputStream.size()); |
| } |
| |
| @Test |
| void testMultiThreaded() throws Exception { |
| ProjectBuildList projectBuildList = getProjectBuildList(); |
| |
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); |
| PrintStream systemOut = new PrintStream(byteArrayOutputStream); |
| final ThreadOutputMuxer threadOutputMuxer = new ThreadOutputMuxer(projectBuildList, systemOut); |
| |
| final List<String> stringList = Arrays.asList( |
| "Thinkin", "of", "a", "master", "plan", "Cuz", "ain’t", "nuthin", "but", "sweat", "inside", "my", |
| "hand"); |
| Iterator<String> lyrics = stringList.iterator(); |
| |
| ExecutorService executor = Executors.newFixedThreadPool(10); |
| CompletionService<ProjectSegment> service = new ExecutorCompletionService<>(executor); |
| |
| List<Future<ProjectSegment>> futures = new ArrayList<>(); |
| for (ProjectSegment projectBuild : projectBuildList) { |
| final Future<ProjectSegment> buildFuture = |
| service.submit(new Outputter(threadOutputMuxer, projectBuild, lyrics.next())); |
| futures.add(buildFuture); |
| } |
| |
| for (Future<ProjectSegment> future : futures) { |
| future.get(); |
| } |
| int expectedLength = 0; |
| for (int i = 0; i < projectBuildList.size(); i++) { |
| expectedLength += stringList.get(i).length(); |
| } |
| |
| threadOutputMuxer.close(); |
| final byte[] bytes = byteArrayOutputStream.toByteArray(); |
| String result = new String(bytes); |
| assertEquals(expectedLength, bytes.length, result); |
| } |
| |
| class Outputter implements Callable<ProjectSegment> { |
| private final ThreadOutputMuxer threadOutputMuxer; |
| |
| private final ProjectSegment item; |
| |
| private final String response; |
| |
| Outputter(ThreadOutputMuxer threadOutputMuxer, ProjectSegment item, String response) { |
| this.threadOutputMuxer = threadOutputMuxer; |
| this.item = item; |
| this.response = response; |
| } |
| |
| public ProjectSegment call() throws Exception { |
| threadOutputMuxer.associateThreadWithProjectSegment(item); |
| System.out.print(response); |
| threadOutputMuxer.setThisModuleComplete(item); |
| return item; |
| } |
| } |
| |
| private ProjectBuildList getProjectBuildList() |
| throws InvalidPluginDescriptorException, PluginVersionResolutionException, PluginDescriptorParsingException, |
| NoPluginFoundForPrefixException, MojoNotFoundException, PluginNotFoundException, |
| PluginResolutionException, LifecyclePhaseNotFoundException, LifecycleNotFoundException { |
| final MavenSession session = ProjectDependencyGraphStub.getMavenSession(); |
| return ProjectDependencyGraphStub.getProjectBuildList(session); |
| } |
| } |