1 /*
2  * ====================================================================
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  * ====================================================================
20  *
21  * This software consists of voluntary contributions made by many
22  * individuals on behalf of the Apache Software Foundation.  For more
23  * information on the Apache Software Foundation, please see
24  * <http://www.apache.org/>.
25  *
26  */
27 
28 package ch.boye.httpclientandroidlib.conn;
29 
30 import java.util.concurrent.ExecutionException;
31 import java.util.concurrent.TimeUnit;
32 
33 import ch.boye.httpclientandroidlib.HttpClientConnection;
34 import ch.boye.httpclientandroidlib.concurrent.Cancellable;
35 
36 /**
37  * Represents a request for a {@link HttpClientConnection} whose life cycle
38  * is managed by a connection manager.
39  *
40  * @since 4.3
41  */
42 public interface ConnectionRequest extends Cancellable {
43 
44     /**
45      * Obtains a connection within a given time.
46      * This method will block until a connection becomes available,
47      * the timeout expires, or the connection manager is shut down.
48      * Timeouts are handled with millisecond precision.
49      *
50      * If {@link #cancel()} is called while this is blocking or
51      * before this began, an {@link InterruptedException} will
52      * be thrown.
53      *
54      * @param timeout   the timeout, 0 or negative for no timeout
55      * @param tunit     the unit for the <code>timeout</code>,
56      *                  may be <code>null</code> only if there is no timeout
57      *
58      * @return  a connection that can be used to communicate
59      *          along the given route
60      *
61      * @throws ConnectionPoolTimeoutException
62      *         in case of a timeout
63      * @throws InterruptedException
64      *         if the calling thread is interrupted while waiting
65      */
get(long timeout, TimeUnit tunit)66     HttpClientConnection get(long timeout, TimeUnit tunit)
67         throws InterruptedException, ExecutionException, ConnectionPoolTimeoutException;
68 
69 }
70