| /* |
| * |
| * 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.qpid.ra; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.Serializable; |
| import java.lang.reflect.Method; |
| |
| import javax.naming.Context; |
| import javax.naming.Reference; |
| import javax.naming.spi.NamingManager; |
| import javax.transaction.TransactionManager; |
| |
| import org.apache.qpid.client.AMQConnectionURL; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Various utility functions |
| * |
| */ |
| public class Util |
| { |
| |
| private static final Logger _log = LoggerFactory.getLogger(Util.class); |
| |
| /** |
| * Compare two strings. |
| * @param me First value |
| * @param you Second value |
| * @return True if object equals else false. |
| */ |
| public static boolean compare(final String me, final String you) |
| { |
| // If both null or intern equals |
| if (me == you) |
| { |
| return true; |
| } |
| |
| // if me null and you are not |
| if (me == null && you != null) |
| { |
| return false; |
| } |
| |
| // me will not be null, test for equality |
| return me.equals(you); |
| } |
| |
| /** |
| * Lookup an object in the default initial context |
| * @param context The context to use |
| * @param name the name to lookup |
| * @param clazz the expected type |
| * @return the object |
| * @throws Exception for any error |
| */ |
| public static <T> T lookup(final Context context, final String name, final Class<T> clazz) throws Exception |
| { |
| Object object = context.lookup(name); |
| |
| if (object instanceof Reference) |
| { |
| return (T)NamingManager.getObjectInstance(object, null, null, null); |
| } |
| |
| return clazz.cast(object); |
| |
| } |
| |
| /** The Resource adapter can't depend on any provider's specific library. Because of that we use reflection to locate the |
| * transaction manager during startup. |
| * |
| * |
| * TODO: We should use a proper SPI instead of reflection |
| * We would need to define a proper SPI package for this. |
| **/ |
| public static TransactionManager locateTM(final String locatorClass, final String locatorMethod) |
| { |
| try |
| { |
| ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
| Class<?> aClass = loader.loadClass(locatorClass); |
| Object o = aClass.newInstance(); |
| Method m = aClass.getMethod(locatorMethod); |
| return (TransactionManager)m.invoke(o); |
| } |
| catch (Throwable e) |
| { |
| _log.debug(e.getMessage(), e); |
| return null; |
| } |
| } |
| |
| /** |
| * Serialize the object into a byte array. |
| * @param serializable The serializable object |
| * @return The generated byte array |
| * @throws IOException For errors during serialization. |
| */ |
| public static byte[] serialize(final Serializable serializable) |
| throws IOException |
| { |
| final ByteArrayOutputStream baos = new ByteArrayOutputStream() ; |
| final ObjectOutputStream oos = new ObjectOutputStream(baos) ; |
| oos.writeObject(serializable) ; |
| oos.close() ; |
| return baos.toByteArray() ; |
| } |
| |
| /** |
| * Deserialize the byte array into an object. |
| * @param data The serialized object as a byte array |
| * @return The serializable object. |
| * @throws IOException For errors during deserialization |
| * @throws ClassNotFoundException If the deserialized class cannot be found. |
| */ |
| public static Object deserialize(final byte[] data) |
| throws IOException, ClassNotFoundException |
| { |
| final ByteArrayInputStream bais = new ByteArrayInputStream(data) ; |
| final ObjectInputStream ois = new ObjectInputStream(bais) ; |
| return ois.readObject() ; |
| } |
| |
| /** |
| * Return a string identification for the specified object. |
| * @param object The object value. |
| * @return The string identification. |
| */ |
| public static String asString(final Object object) |
| { |
| return (object == null ? "null" : object.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(object))) ; |
| } |
| |
| |
| public static String maskUrlForLog(final String url) |
| { |
| String results = null; |
| |
| try |
| { |
| results = new AMQConnectionURL(url).toString(); |
| } |
| catch(Exception ignore){} |
| |
| return (results == null) ? url : results; |
| } |
| |
| } |