| /* |
| * 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.ftpserver.impl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.ftpserver.ConnectionConfig; |
| import org.apache.ftpserver.FtpServer; |
| import org.apache.ftpserver.FtpServerFactory; |
| import org.apache.ftpserver.command.CommandFactory; |
| import org.apache.ftpserver.ftplet.FileSystemFactory; |
| import org.apache.ftpserver.ftplet.FtpException; |
| import org.apache.ftpserver.ftplet.Ftplet; |
| import org.apache.ftpserver.ftplet.UserManager; |
| import org.apache.ftpserver.listener.Listener; |
| import org.apache.ftpserver.message.MessageResource; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * <strong>Internal class, do not use directly.</strong> |
| * |
| * This is the starting point of all the servers. It invokes a new listener |
| * thread. <code>Server</code> implementation is used to create the server |
| * socket and handle client connection. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class DefaultFtpServer implements FtpServer { |
| |
| private final Logger LOG = LoggerFactory.getLogger(DefaultFtpServer.class); |
| |
| private FtpServerContext serverContext; |
| |
| private boolean suspended = false; |
| |
| private boolean started = false; |
| |
| /** |
| * Internal constructor, do not use directly. Use {@link FtpServerFactory} instead |
| */ |
| public DefaultFtpServer(final FtpServerContext serverContext) { |
| this.serverContext = serverContext; |
| } |
| |
| /** |
| * Start the server. Open a new listener thread. |
| * @throws FtpException |
| */ |
| public void start() throws FtpException { |
| if (serverContext == null) { |
| // we have already been stopped, can not be restarted |
| throw new IllegalStateException("FtpServer has been stopped. Restart is not supported"); |
| } |
| |
| List<Listener> startedListeners = new ArrayList<Listener>(); |
| |
| try { |
| Map<String, Listener> listeners = serverContext.getListeners(); |
| for (Listener listener : listeners.values()) { |
| listener.start(serverContext); |
| startedListeners.add(listener); |
| } |
| |
| // init the Ftplet container |
| serverContext.getFtpletContainer().init(serverContext); |
| |
| started = true; |
| |
| LOG.info("FTP server started"); |
| } catch(Exception e) { |
| // must close listeners that we were able to start |
| for(Listener listener : startedListeners) { |
| listener.stop(); |
| } |
| |
| if(e instanceof FtpException) { |
| throw (FtpException)e; |
| } else { |
| throw (RuntimeException)e; |
| } |
| |
| } |
| } |
| |
| /** |
| * Stop the server. Stopping the server will close completely and |
| * it not supported to restart using {@link #start()}. |
| */ |
| public void stop() { |
| if (serverContext == null) { |
| // we have already been stopped, ignore |
| return; |
| } |
| |
| // stop all listeners |
| Map<String, Listener> listeners = serverContext.getListeners(); |
| for (Listener listener : listeners.values()) { |
| listener.stop(); |
| } |
| |
| // destroy the Ftplet container |
| serverContext.getFtpletContainer().destroy(); |
| |
| // release server resources |
| if (serverContext != null) { |
| serverContext.dispose(); |
| serverContext = null; |
| } |
| |
| started = false; |
| } |
| |
| /** |
| * Get the server status. |
| */ |
| public boolean isStopped() { |
| return !started; |
| } |
| |
| /** |
| * Suspend further requests |
| */ |
| public void suspend() { |
| if (!started) { |
| return; |
| } |
| |
| LOG.debug("Suspending server"); |
| // stop all listeners |
| Map<String, Listener> listeners = serverContext.getListeners(); |
| for (Listener listener : listeners.values()) { |
| listener.suspend(); |
| } |
| |
| suspended = true; |
| LOG.debug("Server suspended"); |
| } |
| |
| /** |
| * Resume the server handler |
| */ |
| public void resume() { |
| if (!suspended) { |
| return; |
| } |
| |
| LOG.debug("Resuming server"); |
| Map<String, Listener> listeners = serverContext.getListeners(); |
| for (Listener listener : listeners.values()) { |
| listener.resume(); |
| } |
| |
| suspended = false; |
| LOG.debug("Server resumed"); |
| } |
| |
| /** |
| * Is the server suspended |
| */ |
| public boolean isSuspended() { |
| return suspended; |
| } |
| |
| /** |
| * Get the root server context. |
| */ |
| public FtpServerContext getServerContext() { |
| return serverContext; |
| } |
| |
| /** |
| * Get all listeners available one this server |
| * |
| * @return The current listeners |
| */ |
| public Map<String, Listener> getListeners() { |
| return getServerContext().getListeners(); |
| } |
| |
| /** |
| * Get a specific listener identified by its name |
| * |
| * @param name |
| * The name of the listener |
| * @return The {@link Listener} matching the provided name |
| */ |
| public Listener getListener(final String name) { |
| return getServerContext().getListener(name); |
| } |
| |
| /** |
| * Get all {@link Ftplet}s registered at this server |
| * |
| * @return All {@link Ftplet}s |
| */ |
| public Map<String, Ftplet> getFtplets() { |
| return getServerContext().getFtpletContainer().getFtplets(); |
| } |
| |
| /** |
| * Retrieve the user manager used with this server |
| * |
| * @return The user manager |
| */ |
| public UserManager getUserManager() { |
| return getServerContext().getUserManager(); |
| } |
| |
| /** |
| * Retrieve the file system used with this server |
| * |
| * @return The {@link FileSystemFactory} |
| */ |
| public FileSystemFactory getFileSystem() { |
| return getServerContext().getFileSystemManager(); |
| } |
| |
| /** |
| * Retrieve the command factory used with this server |
| * |
| * @return The {@link CommandFactory} |
| */ |
| public CommandFactory getCommandFactory() { |
| return getServerContext().getCommandFactory(); |
| } |
| |
| /** |
| * Retrieve the message resource used with this server |
| * |
| * @return The {@link MessageResource} |
| */ |
| public MessageResource getMessageResource() { |
| return getServerContext().getMessageResource(); |
| } |
| |
| /** |
| * Retrieve the connection configuration this server |
| * |
| * @return The {@link MessageResource} |
| */ |
| public ConnectionConfig getConnectionConfig() { |
| return getServerContext().getConnectionConfig(); |
| } |
| } |