| /* |
| |
| Derby - Class org.apache.derbyTesting.functionTests.tests.store.ClassLoaderBootTest |
| |
| 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.derbyTesting.functionTests.tests.store; |
| |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.net.URLStreamHandlerFactory; |
| import java.security.AccessController; |
| import java.security.CodeSource; |
| import java.security.PrivilegedAction; |
| import java.sql.Connection; |
| import java.sql.SQLException; |
| import java.util.Properties; |
| import javax.sql.DataSource; |
| import junit.extensions.TestSetup; |
| import junit.framework.Test; |
| import org.apache.derbyTesting.junit.BaseJDBCTestCase; |
| import org.apache.derbyTesting.junit.BaseTestSuite; |
| import org.apache.derbyTesting.junit.CleanDatabaseTestSetup; |
| import org.apache.derbyTesting.junit.JDBC; |
| import org.apache.derbyTesting.junit.JDBCDataSource; |
| import org.apache.derbyTesting.junit.SecurityManagerSetup; |
| import org.apache.derbyTesting.junit.SystemPropertyTestSetup; |
| |
| |
| /* |
| * This class tests a database boots using class loaders. Test cases in this |
| * class checks only one instance of a database can exist evenif database is |
| * booted using different class loader instances. |
| */ |
| public class ClassLoaderBootTest extends BaseJDBCTestCase { |
| |
| private static URL derbyClassLocation; |
| static { |
| // find the location of derby jar file or location |
| // of classes. |
| CodeSource cs; |
| try { |
| Class cls = Class.forName("org.apache.derby.database.Database"); |
| cs = cls.getProtectionDomain().getCodeSource(); |
| } catch (ClassNotFoundException e) { |
| cs = null; |
| } |
| |
| if(cs == null ) |
| derbyClassLocation = null; |
| else |
| derbyClassLocation = cs.getLocation(); |
| } |
| |
| |
| private ClassLoader loader_1; |
| private ClassLoader loader_2; |
| private ClassLoader mainLoader; |
| |
| |
| public ClassLoaderBootTest(String name ) { |
| super(name); |
| } |
| |
| /** |
| * Runs the tests in the default embedded configuration and then |
| * the client server configuration. |
| */ |
| public static Test suite() |
| { |
| BaseTestSuite suite = new BaseTestSuite(ClassLoaderBootTest.class); |
| Test test = suite; |
| TestSetup setup = |
| new CleanDatabaseTestSetup(test) { |
| protected void setUp() throws Exception { |
| super.setUp(); |
| //shutdown the database. |
| DataSource ds = JDBCDataSource.getDataSource(); |
| JDBCDataSource.shutdownDatabase(ds); |
| } |
| }; |
| Properties p = new Properties(); |
| p.setProperty("derby.infolog.append", "true"); |
| |
| setup = new SystemPropertyTestSetup(setup,p); |
| // DERBY-2813 prevents test from running with security manager |
| // on. Have to run without security manager for now. |
| return SecurityManagerSetup.noSecurityManager(setup); |
| //return setup; |
| } |
| |
| |
| /** |
| * Simple set up, just setup the loaders. |
| * @throws SQLException |
| */ |
| protected void setUp() throws Exception |
| { |
| URL[] urls = new URL[]{derbyClassLocation}; |
| mainLoader = getThreadLoader(); |
| |
| loader_1 = createDerbyClassLoader(urls); |
| loader_2 = createDerbyClassLoader(urls); |
| } |
| |
| protected void tearDown() |
| throws Exception |
| { |
| if ( mainLoader != null ) { setThreadLoader(mainLoader); } |
| |
| loader_1 = null; |
| loader_2 = null; |
| mainLoader = null; |
| } |
| |
| |
| /** |
| * Create a new DerbyURLClassLoader inside a priv block. |
| */ |
| private DerbyURLClassLoader createDerbyClassLoader(final URL[] urls) |
| throws Exception |
| { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<DerbyURLClassLoader>(){ |
| public DerbyURLClassLoader run() |
| { |
| return new DerbyURLClassLoader(urls); |
| } |
| }); |
| } |
| |
| |
| |
| /* |
| * Test booting a database, that was alreadt booted by another class loader. |
| */ |
| public void testBootingAnAlreadyBootedDatabase() throws SQLException |
| { |
| // |
| // This test relies on a bug fix in Java 6. Java 5 does not have this |
| // bug fix and will fail this test. See DERBY-700. |
| // |
| if (!JDBC.vmSupportsJDBC4()) |
| { |
| println( "The dual boot test only runs on Java 6 and higher." ); |
| return; |
| } |
| |
| println( "The dual boot test is running." ); |
| |
| // first boot the database using one loader and attempt |
| // to boot it using another loader, it should fail to boot. |
| |
| setThreadLoader(loader_1); |
| DataSource ds_1 = JDBCDataSource.getDataSource(); |
| assertEquals(loader_1, getThreadLoader()); |
| assertEquals(loader_1, ds_1.getClass().getClassLoader()); |
| Connection conn1 = ds_1.getConnection(); |
| // now attemp to boot using another class loader. |
| setThreadLoader(loader_2); |
| DataSource ds_2 = JDBCDataSource.getDataSource(); |
| assertEquals(loader_2, getThreadLoader()); |
| assertEquals(loader_2, ds_2.getClass().getClassLoader()); |
| try { |
| ds_2.getConnection(); |
| fail("booted database that was already booted by another CLR"); |
| } catch (SQLException e) { |
| SQLException ne = e.getNextException(); |
| assertPreventDualBoot(ne); |
| JDBCDataSource.shutEngine(ds_2); |
| } |
| |
| // shutdown the engine. |
| setThreadLoader(loader_1); |
| JDBCDataSource.shutEngine(ds_1); |
| } |
| |
| |
| /* |
| * Test booting a database, that was booted and shutdown |
| * by another class loader. |
| */ |
| public void testBootingDatabaseShutdownByAnotherCLR() throws SQLException |
| { |
| // first boot the database using one loader and shutdown and then |
| // attempt to boot it using another loader, it should boot. |
| |
| setThreadLoader(loader_1); |
| DataSource ds_1 = JDBCDataSource.getDataSource(); |
| assertEquals(loader_1, ds_1.getClass().getClassLoader()); |
| Connection conn1 = ds_1.getConnection(); |
| //shutdown the database. |
| JDBCDataSource.shutdownDatabase(ds_1); |
| // now attempt to boot using another class loader. |
| setThreadLoader(loader_2); |
| DataSource ds_2 = JDBCDataSource.getDataSource(); |
| assertEquals(loader_2, ds_2.getClass().getClassLoader()); |
| ds_2.getConnection(); |
| // shutdown the engine for both the class loaders. |
| JDBCDataSource.shutEngine(ds_2); |
| JDBCDataSource.shutEngine(ds_1); |
| } |
| |
| private void setThreadLoader(final ClassLoader which) { |
| AccessController.doPrivileged(new PrivilegedAction<Void>(){ |
| public Void run() { |
| java.lang.Thread.currentThread().setContextClassLoader(which); |
| return null; |
| } |
| }); |
| } |
| |
| private ClassLoader getThreadLoader() { |
| return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>(){ |
| public ClassLoader run() { |
| return java.lang.Thread.currentThread().getContextClassLoader(); |
| } |
| }); |
| } |
| |
| private static void assertPreventDualBoot(SQLException ne) { |
| assertNotNull(ne); |
| String state = ne.getSQLState(); |
| assertTrue("Unexpected SQLState:" + state, state.equals("XSDB6")); |
| } |
| |
| |
| |
| /* |
| * Simple specialized URLClassLoader for Derby. |
| * Filters all derby classes out of parent ClassLoader to ensure |
| * that Derby classes are loaded from the URL specified |
| */ |
| public class DerbyURLClassLoader extends URLClassLoader { |
| |
| /** |
| * @see java.net.URLClassLoader#URLClassLoader(URL[] urls) |
| */ |
| public DerbyURLClassLoader(URL[] urls) { |
| super(urls); |
| } |
| |
| |
| /** |
| * @see java.net.URLClassLoader#URLClassLoader(URL[] urls, |
| * ClassLoader parent) |
| */ |
| public DerbyURLClassLoader(URL[] urls, ClassLoader parent) { |
| super(urls, parent); |
| |
| } |
| |
| /** |
| *@see java.net.URLClassLoader#URLClassLoader(java.net.URL[], |
| * java.lang.ClassLoader, java.net.URLStreamHandlerFactory) |
| */ |
| public DerbyURLClassLoader(URL[] urls, ClassLoader parent, |
| URLStreamHandlerFactory factory) { |
| super(urls, parent, factory); |
| |
| } |
| |
| /* Override the parent class loader to filter out any derby |
| * jars in the classpath. Any classes that start with |
| * "org.apache.derby" will load from the URLClassLoader |
| * |
| * @see java.lang.ClassLoader#loadClass(java.lang.String, boolean) |
| */ |
| protected synchronized Class loadClass(String name, boolean resolve) |
| throws ClassNotFoundException |
| { |
| |
| Class cl = findLoadedClass(name); |
| if (cl == null) { |
| // cut off delegation to parent for certain classes |
| // to ensure loading from the desired source |
| if (!name.startsWith("org.apache.derby")) { |
| cl = getParent().loadClass(name); |
| } |
| } |
| if (cl == null) cl = findClass(name); |
| if (cl == null) throw new ClassNotFoundException(); |
| if (resolve) resolveClass(cl); |
| return cl; |
| } |
| |
| /* |
| * @see java.lang.ClassLoader#loadClass(java.lang.String) |
| */ |
| public Class loadClass(String name) throws ClassNotFoundException { |
| return loadClass(name, false); |
| } |
| |
| } |
| } |
| |