| /* |
| * 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.plugin.coreit; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Vector; |
| |
| import org.apache.maven.plugin.AbstractMojo; |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.apache.maven.plugins.annotations.Component; |
| import org.apache.maven.plugins.annotations.LifecyclePhase; |
| import org.apache.maven.plugins.annotations.Mojo; |
| import org.apache.maven.plugins.annotations.Parameter; |
| |
| /** |
| * Checks the thread-safe retrieval of components from active component collections. |
| * |
| * @author Benjamin Bentmann |
| */ |
| @Mojo(name = "check-thread-safety", defaultPhase = LifecyclePhase.VALIDATE) |
| public class CheckThreadSafetyMojo extends AbstractMojo { |
| |
| /** |
| * Project base directory used for manual path alignment. |
| */ |
| @Parameter(defaultValue = "${basedir}", readonly = true) |
| private File basedir; |
| |
| /** |
| * The available components, as a map. |
| */ |
| @Component |
| private Map<String, TestComponent> componentMap; |
| |
| /** |
| * The available components, as a list. |
| */ |
| @Component |
| private List<TestComponent> componentList; |
| |
| /** |
| * The path to the properties file to create. |
| */ |
| @Parameter(property = "collections.outputFile") |
| private File outputFile; |
| |
| /** |
| * Runs this mojo. |
| * |
| * @throws MojoExecutionException If the output file could not be created. |
| */ |
| public void execute() throws MojoExecutionException { |
| Properties componentProperties = new Properties(); |
| |
| getLog().info("[MAVEN-CORE-IT-LOG] Testing concurrent component access"); |
| |
| ClassLoader pluginRealm = getClass().getClassLoader(); |
| ClassLoader coreRealm = MojoExecutionException.class.getClassLoader(); |
| |
| final Map map = componentMap; |
| final List list = componentList; |
| final List go = new Vector(); |
| final List exceptions = new Vector(); |
| |
| Thread[] threads = new Thread[2]; |
| for (int i = 0; i < threads.length; i++) { |
| // NOTE: The threads need to use different realms to trigger changes of the collections |
| final ClassLoader cl = (i % 2) == 0 ? pluginRealm : coreRealm; |
| threads[i] = new Thread() { |
| private final ClassLoader tccl = cl; |
| |
| public void run() { |
| getLog().info("[MAVEN-CORE-IT-LOG] Thread " + this + " uses " + tccl); |
| Thread.currentThread().setContextClassLoader(tccl); |
| while (go.isEmpty()) { |
| // wait for start |
| } |
| for (int j = 0; j < 10 * 1000; j++) { |
| try { |
| for (Object o : map.values()) { |
| o.toString(); |
| } |
| for (Object aList : list) { |
| aList.toString(); |
| } |
| } catch (Exception e) { |
| getLog().warn("[MAVEN-CORE-IT-LOG] Thread " + this + " encountered concurrency issue", e); |
| exceptions.add(e); |
| } |
| } |
| } |
| }; |
| threads[i].start(); |
| } |
| |
| go.add(null); |
| for (Thread thread : threads) { |
| try { |
| thread.join(); |
| } catch (InterruptedException e) { |
| getLog().warn("[MAVEN-CORE-IT-LOG] Interrupted while joining " + thread); |
| } |
| } |
| |
| componentProperties.setProperty("components", Integer.toString(componentList.size())); |
| componentProperties.setProperty("exceptions", Integer.toString(exceptions.size())); |
| |
| if (!outputFile.isAbsolute()) { |
| outputFile = new File(basedir, outputFile.getPath()); |
| } |
| |
| getLog().info("[MAVEN-CORE-IT-LOG] Creating output file " + outputFile); |
| |
| OutputStream out = null; |
| try { |
| outputFile.getParentFile().mkdirs(); |
| out = new FileOutputStream(outputFile); |
| componentProperties.store(out, "MAVEN-CORE-IT-LOG"); |
| } catch (IOException e) { |
| throw new MojoExecutionException("Output file could not be created: " + outputFile, e); |
| } finally { |
| if (out != null) { |
| try { |
| out.close(); |
| } catch (IOException e) { |
| // just ignore |
| } |
| } |
| } |
| |
| getLog().info("[MAVEN-CORE-IT-LOG] Created output file " + outputFile); |
| } |
| } |