LMTPProxyServer.java

/**
 * Copyright (c) 2011-2012 Optimax Software Ltd.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of Optimax Software, ElasticInbox, nor the names
 *    of its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.elasticinbox.lmtp;

import java.net.InetSocketAddress;

import org.apache.james.protocols.api.logger.Logger;
import org.apache.james.protocols.lmtp.LMTPProtocolHandlerChain;
import org.apache.james.protocols.netty.NettyServer;
import org.apache.james.protocols.smtp.SMTPProtocol;

import com.elasticinbox.config.Configurator;
import com.elasticinbox.lmtp.delivery.IDeliveryAgent;
import com.elasticinbox.lmtp.server.LMTPServerConfig;
import com.elasticinbox.lmtp.server.api.handler.ElasticInboxDeliveryHandler;
import com.elasticinbox.lmtp.server.api.handler.ValidRcptHandler;
import com.elasticinbox.lmtp.utils.LMTPProtocolLogger;

/**
 * LMTP proxy main class which sends traffic to multiple registered handlers
 * 
 * @author Rustam Aliyev
 */
public class LMTPProxyServer
{
	private NettyServer server;
	private IDeliveryAgent backend;

	protected LMTPProxyServer(IDeliveryAgent backend) {
	    this.backend = backend;
	}

	public void start() throws Exception
	{
		Logger logger = new LMTPProtocolLogger();

		LMTPProtocolHandlerChain chain = new LMTPProtocolHandlerChain();
		chain.add(0, new ElasticInboxDeliveryHandler(backend));
		chain.add(0, new ValidRcptHandler());
		chain.wireExtensibleHandlers();

		server = new NettyServer(new SMTPProtocol(chain, new LMTPServerConfig(), logger));
		server.setListenAddresses(new InetSocketAddress(Configurator.getLmtpPort()));
		server.setMaxConcurrentConnections(Configurator.getLmtpMaxConnections());
		server.setTimeout(LMTPServerConfig.CONNECTION_TIMEOUT);
		server.setUseExecutionHandler(true, 16);
		server.bind();
	}

	public void stop() {
		server.unbind();
	}
}