jamesconnectionmanager.java

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/***********************************************************************
 * Copyright (c) 2000-2004 The Apache Software Foundation.             *
 * All rights reserved.                                                *
 * ------------------------------------------------------------------- *
 * Licensed 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.                      *
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package org.apache.james.services;


import org.apache.avalon.cornerstone.services.connection.ConnectionManager;
import java.net.ServerSocket;
import org.apache.avalon.excalibur.thread.ThreadPool;
import org.apache.avalon.cornerstone.services.connection.ConnectionHandlerFactory;

/**
 * This interface extends the standard ConnectionManager interface to allow
 * connectionLimits to be specified on a per service basis
 **/
public interface JamesConnectionManager extends ConnectionManager
{
    /**
     * The component role used by components implementing this service
     */
    String ROLE = "org.apache.james.services.JamesConnectionManager";

    /**
     * Returns the default maximum number of open connections supported by this
     * SimpleConnectionManager
     *
     * @return the maximum number of connections
     */
    int getMaximumNumberOfOpenConnections();

    /**
     * Start managing a connection.
     * Management involves accepting connections and farming them out to threads
     * from pool to be handled.
     *
     * @param name the name of connection
     * @param socket the ServerSocket from which to
     * @param handlerFactory the factory from which to acquire handlers
     * @param threadPool the thread pool to use
     * @param maxOpenConnections the maximum number of open connections allowed for this server socket.
     * @exception Exception if an error occurs
     */
    void connect( String name,
                  ServerSocket socket,
                  ConnectionHandlerFactory handlerFactory,
                  ThreadPool threadPool,
                  int maxOpenConnections )
        throws Exception;
    
    /**
     * Start managing a connection.
     * This is similar to other connect method except that it uses default thread pool.
     *
     * @param name the name of connection
     * @param socket the ServerSocket from which to
     * @param handlerFactory the factory from which to acquire handlers
     * @param maxOpenConnections the maximum number of open connections allowed for this server socket.
     * @exception Exception if an error occurs
     */
    void connect( String name,
                  ServerSocket socket,
                  ConnectionHandlerFactory handlerFactory,
                  int maxOpenConnections )
        throws Exception;

}