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Java example source code file (ClientConnectionRequest.java)

This example source code file (ClientConnectionRequest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

clientconnectionrequest, connectionpooltimeoutexception, interruptedexception, managedclientconnection, threading, threads, timeunit

The ClientConnectionRequest.java example source code

/*
 * ====================================================================
 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.conn;

import java.util.concurrent.TimeUnit;

/**
 * Encapsulates a request for a {@link ManagedClientConnection}.
 *
 * @since 4.0
 */
public interface ClientConnectionRequest {
    
    /**
     * Obtains a connection within a given time.
     * This method will block until a connection becomes available,
     * the timeout expires, or the connection manager is
     * {@link ClientConnectionManager#shutdown() shut down}.
     * Timeouts are handled with millisecond precision.
     * 
     * If {@link #abortRequest()} is called while this is blocking or
     * before this began, an {@link InterruptedException} will
     * be thrown.
     * 
     * @param timeout   the timeout, 0 or negative for no timeout
     * @param tunit     the unit for the <code>timeout,
     *                  may be <code>null only if there is no timeout
     *
     * @return  a connection that can be used to communicate
     *          along the given route
     *
     * @throws ConnectionPoolTimeoutException
     *         in case of a timeout
     * @throws InterruptedException
     *         if the calling thread is interrupted while waiting
     */
    ManagedClientConnection getConnection(long timeout, TimeUnit tunit) 
        throws InterruptedException, ConnectionPoolTimeoutException;
    
    /**
     * Aborts the call to {@link #getConnection(long, TimeUnit)},
     * causing it to throw an {@link InterruptedException}.
     */
    void abortRequest();

}

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