193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair/* 293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Copyright 2007 the original author or authors. 393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Licensed under the Apache License, Version 2.0 (the "License"); 593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * you may not use this file except in compliance with the License. 693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * You may obtain a copy of the License at 793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * http://www.apache.org/licenses/LICENSE-2.0 993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 1093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Unless required by applicable law or agreed to in writing, software 1193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * distributed under the License is distributed on an "AS IS" BASIS, 1293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * See the License for the specific language governing permissions and 1493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * limitations under the License. 1593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 1693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismairpackage org.mockftpserver.core.command; 1793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 18848932d9e7c6953b3c345c9aa6b0b6c3cfe20d79chrismairimport org.mockftpserver.core.session.Session; 19848932d9e7c6953b3c345c9aa6b0b6c3cfe20d79chrismairimport org.mockftpserver.core.util.Assert; 20848932d9e7c6953b3c345c9aa6b0b6c3cfe20d79chrismairimport org.mockftpserver.core.util.AssertFailedException; 21848932d9e7c6953b3c345c9aa6b0b6c3cfe20d79chrismair 2293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismairimport java.util.ArrayList; 2393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismairimport java.util.Iterator; 2493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismairimport java.util.List; 2593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismairimport java.util.ResourceBundle; 2693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 2793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair/** 2893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Composite CommandHandler that manages an internal list of CommandHandlers to which it delegates. 2993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * The internal CommandHandlers are maintained in an ordered list. Starting with the first 3093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * CommandHandler in the list, each invocation of this composite handler will invoke (delegate to) 3193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * the current internal CommandHander. Then it moves on the next CommandHandler in the internal list. 3293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * <p> 3393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * The following example replaces the CWD CommandHandler with a <code>SimpleCompositeCommandHandler</code>. 3493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * The first invocation of the CWD command will fail (reply code 500). The seconds will succeed. 3593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * <pre><code> 3693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 3793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * StubFtpServer stubFtpServer = new StubFtpServer(); 3893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 3993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * CommandHandler commandHandler1 = new StaticReplyCommandHandler(500); 4093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * CommandHandler commandHandler2 = new CwdCommandHandler(); 4193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 4293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * SimpleCompositeCommandHandler simpleCompositeCommandHandler = new SimpleCompositeCommandHandler(); 4393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * simpleCompositeCommandHandler.addCommandHandler(commandHandler1); 4493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * simpleCompositeCommandHandler.addCommandHandler(commandHandler2); 4593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 4693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * stubFtpServer.setCommandHandler("CWD", simpleCompositeCommandHandler); 4793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * </code></pre> 4893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 494ca3386623ce60063f27955ad1b2b1b6cbba8b09chrismair * @version $Revision$ - $Date$ 5093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 5193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @author Chris Mair 5293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 5393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismairpublic final class SimpleCompositeCommandHandler implements CommandHandler, ReplyTextBundleAware { 5493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 5593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair private List commandHandlers = new ArrayList(); 5693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair private int invocationIndex = 0; 5793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 5893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair /** 5993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Add a CommandHandler to the internal list of handlers. 6093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 6193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @param commandHandler - the CommandHandler 6293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 6393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @throws AssertFailedException - if the commandHandler is null 6493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 6593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair public void addCommandHandler(CommandHandler commandHandler) { 6693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.notNull(commandHandler, "commandHandler"); 6793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair commandHandlers.add(commandHandler); 6893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 6993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 7093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair /** 7193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Set the List of CommandHandlers to which to delegate. This replaces any CommandHandlers that 7293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * have been defined previously. 7393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @param commandHandlers - the complete List of CommandHandlers to which invocations are delegated 7493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 7593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair public void setCommandHandlers(List commandHandlers) { 7693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.notNull(commandHandlers, "commandHandlers"); 7793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair this.commandHandlers = new ArrayList(commandHandlers); 7893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 7993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 8093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair /** 8193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Return the CommandHandler corresponding to the specified invocation index. In other words, return 8293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * the CommandHandler instance to which the Nth {@link #handleCommand(Command, Session)} has been or will 8393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * be delegated (where N=index). 8493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @param index - the index of the desired invocation (zero-based). 8593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @return the CommandHandler 8693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 8793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @throws AssertFailedException - if no CommandHandler is defined for the index or the index is not valid 8893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 8993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair public CommandHandler getCommandHandler(int index) { 9093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.isTrue(index < commandHandlers.size(), "No CommandHandler defined for index " + index); 9193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.isTrue(index >= 0, "The index cannot be less than zero: " + index); 9293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair return (CommandHandler) commandHandlers.get(index); 9393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 9493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 9593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair /** 9693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @see org.mockftpserver.core.command.CommandHandler#handleCommand(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session) 9793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 9893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair public void handleCommand(Command command, Session session) throws Exception { 9993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.notNull(command, "command"); 10093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.notNull(session, "session"); 10193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair Assert.isTrue(commandHandlers.size() > invocationIndex, "No CommandHandler defined for invocation #" + invocationIndex); 10293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 10393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair CommandHandler commandHandler = (CommandHandler) commandHandlers.get(invocationIndex); 10493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair invocationIndex++; 10593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair commandHandler.handleCommand(command, session); 10693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 10793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 10893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair /** 10993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Returns null. This is a composite, and has no reply text bundle. 11093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 11193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @see org.mockftpserver.core.command.ReplyTextBundleAware#getReplyTextBundle() 11293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 11393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair public ResourceBundle getReplyTextBundle() { 11493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair return null; 11593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 11693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 11793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair /** 11893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * Call <code>setReplyTextBundle()</code> on each of the command handlers within the internal list. 11993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * 12093102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair * @see org.mockftpserver.core.command.ReplyTextBundleAware#setReplyTextBundle(java.util.ResourceBundle) 12193102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair */ 12293102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair public void setReplyTextBundle(ResourceBundle replyTextBundle) { 12393102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair for (Iterator iter = commandHandlers.iterator(); iter.hasNext();) { 12493102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair CommandHandler commandHandler = (CommandHandler) iter.next(); 12593102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair ReplyTextBundleUtil.setReplyTextBundleIfAppropriate(commandHandler, replyTextBundle); 12693102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 12793102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair } 12893102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair 12993102446a7b7c3d17888064b4e2e4e5cb534e6d0chrismair} 130