| /* |
| * 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.accumulo.classloader.vfs.context; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static java.nio.file.StandardOpenOption.WRITE; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.nio.file.Files; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.accumulo.classloader.vfs.AccumuloVFSClassLoader; |
| import org.apache.accumulo.classloader.vfs.context.ReloadingVFSContextClassLoaderFactory.Context; |
| import org.apache.accumulo.classloader.vfs.context.ReloadingVFSContextClassLoaderFactory.ContextConfig; |
| import org.apache.accumulo.classloader.vfs.context.ReloadingVFSContextClassLoaderFactory.Contexts; |
| import org.apache.commons.io.FileUtils; |
| import org.junit.BeforeClass; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.gson.Gson; |
| |
| import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; |
| |
| @SuppressFBWarnings(value = "PATH_TRAVERSAL_IN", justification = "paths not set by user input") |
| public class ReloadingVFSContextClassLoaderFactoryTest { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(ReloadingVFSContextClassLoaderFactoryTest.class); |
| |
| private static class TestReloadingVFSContextClassLoaderFactory |
| extends ReloadingVFSContextClassLoaderFactory { |
| |
| private final String dir; |
| |
| public TestReloadingVFSContextClassLoaderFactory(String dir) { |
| this.dir = dir; |
| } |
| |
| @Override |
| protected AccumuloVFSClassLoader create(Context c) { |
| AccumuloVFSClassLoader acl = |
| AccessController.doPrivileged(new PrivilegedAction<AccumuloVFSClassLoader>() { |
| @Override |
| public AccumuloVFSClassLoader run() { |
| AccumuloVFSClassLoader cl = new AccumuloVFSClassLoader( |
| ReloadingVFSContextClassLoaderFactory.class.getClassLoader()) { |
| @Override |
| protected String getClassPath() { |
| return dir; |
| } |
| |
| @Override |
| protected boolean isPostDelegationModel() { |
| LOG.debug("isPostDelegationModel called, returning {}", |
| c.getConfig().getPostDelegate()); |
| return c.getConfig().getPostDelegate(); |
| } |
| |
| @Override |
| protected long getMonitorInterval() { |
| return 500l; |
| } |
| |
| @Override |
| protected boolean isVMInitialized() { |
| return true; |
| } |
| }; |
| cl.setVMInitializedForTests(); |
| cl.setMaxRetries(2); |
| return cl; |
| } |
| |
| }); |
| return acl; |
| } |
| } |
| |
| @Rule |
| public TemporaryFolder TEMP = |
| new TemporaryFolder(new File(System.getProperty("user.dir") + "/target")); |
| |
| private static final Contexts c = new Contexts(); |
| |
| private static File foo = new File(System.getProperty("user.dir") + "/target/foo"); |
| private static File bar = new File(System.getProperty("user.dir") + "/target/bar"); |
| |
| @BeforeClass |
| public static void setup() throws Exception { |
| |
| assertTrue(foo.mkdir()); |
| assertTrue(bar.mkdir()); |
| |
| System.setProperty(AccumuloVFSClassLoader.VFS_CLASSLOADER_DEBUG, "true"); |
| ContextConfig cc1 = new ContextConfig(); |
| cc1.setClassPath(foo.toURI() + ".*"); |
| cc1.setPostDelegate(true); |
| cc1.setMonitorIntervalMs(1000); |
| Context c1 = new Context(); |
| c1.setName("cx1"); |
| c1.setConfig(cc1); |
| |
| ContextConfig cc2 = new ContextConfig(); |
| cc2.setClassPath(bar.toURI() + ".*"); |
| cc2.setPostDelegate(false); |
| cc2.setMonitorIntervalMs(1000); |
| Context c2 = new Context(); |
| c2.setName("cx2"); |
| c2.setConfig(cc2); |
| |
| List<Context> list = new ArrayList<>(); |
| list.add(c1); |
| list.add(c2); |
| c.setContexts(list); |
| } |
| |
| @Test |
| public void testDeSer() throws Exception { |
| Gson g = new Gson().newBuilder().setPrettyPrinting().create(); |
| String contexts = g.toJson(c); |
| System.out.println(contexts); |
| |
| Gson g2 = new Gson(); |
| Contexts actual = g2.fromJson(contexts, Contexts.class); |
| |
| assertEquals(c, actual); |
| |
| } |
| |
| @Test |
| public void testCreation() throws Exception { |
| |
| FileUtils.copyURLToFile(this.getClass().getResource("/HelloWorld.jar"), |
| new File(foo, "HelloWorld.jar")); |
| FileUtils.copyURLToFile(this.getClass().getResource("/HelloWorld.jar"), |
| new File(bar, "HelloWorld2.jar")); |
| |
| File f = TEMP.newFile(); |
| f.deleteOnExit(); |
| Gson g = new Gson(); |
| String contexts = g.toJson(c); |
| try (BufferedWriter writer = Files.newBufferedWriter(f.toPath(), UTF_8, WRITE)) { |
| writer.write(contexts); |
| } |
| ReloadingVFSContextClassLoaderFactory cl = new ReloadingVFSContextClassLoaderFactory() { |
| @Override |
| protected String getConfigFileLocation() { |
| return f.toURI().toString(); |
| } |
| }; |
| try { |
| cl.getClassLoader("c1"); |
| fail("Expected illegal argument exception"); |
| } catch (IllegalArgumentException e) { |
| // works |
| } |
| cl.getClassLoader("cx1"); |
| cl.getClassLoader("cx2"); |
| cl.closeForTests(); |
| } |
| |
| @Test |
| public void testReloading() throws Exception { |
| |
| System.setProperty(AccumuloVFSClassLoader.VFS_CLASSPATH_MONITOR_INTERVAL, "1"); |
| |
| FileUtils.copyURLToFile(this.getClass().getResource("/HelloWorld.jar"), |
| new File(foo, "HelloWorld.jar")); |
| FileUtils.copyURLToFile(this.getClass().getResource("/HelloWorld.jar"), |
| new File(bar, "HelloWorld2.jar")); |
| |
| File f = TEMP.newFile(); |
| f.deleteOnExit(); |
| Gson g = new Gson(); |
| String contexts = g.toJson(c); |
| try (BufferedWriter writer = Files.newBufferedWriter(f.toPath(), UTF_8, WRITE)) { |
| writer.write(contexts); |
| } |
| |
| TestReloadingVFSContextClassLoaderFactory factory = |
| new TestReloadingVFSContextClassLoaderFactory(foo.toURI() + ".*") { |
| @Override |
| protected String getConfigFileLocation() { |
| return f.toURI().toString(); |
| } |
| }; |
| |
| ClassLoader cl1 = factory.getClassLoader("cx1"); |
| Class<?> clazz1 = cl1.loadClass("test.HelloWorld"); |
| Object o1 = clazz1.getDeclaredConstructor().newInstance(); |
| assertEquals("Hello World!", o1.toString()); |
| |
| // Check that the class is the same before the update |
| Class<?> clazz1_5 = cl1.loadClass("test.HelloWorld"); |
| assertEquals(clazz1, clazz1_5); |
| |
| assertTrue(new File(foo, "HelloWorld.jar").delete()); |
| |
| Thread.sleep(1000); |
| |
| // Update the class |
| FileUtils.copyURLToFile(this.getClass().getResource("/HelloWorld.jar"), |
| new File(foo, "HelloWorld2.jar")); |
| |
| // Wait for the monitor to notice |
| Thread.sleep(1000); |
| |
| ClassLoader cl2 = factory.getClassLoader("cx1"); |
| assertNotEquals(cl1, cl2); |
| |
| Class<?> clazz2 = factory.getClassLoader("cx1").loadClass("test.HelloWorld"); |
| Object o2 = clazz2.getDeclaredConstructor().newInstance(); |
| assertEquals("Hello World!", o2.toString()); |
| |
| // This is false because they are loaded by a different classloader |
| assertNotEquals(clazz1, clazz2); |
| assertNotEquals(o1, o2); |
| |
| factory.closeForTests(); |
| } |
| |
| } |