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Java > Open Source Codes > org > apache > activemq > transport > reliable > ReplayStrategy


1 /**
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one or more
4  * contributor license agreements. See the NOTICE file distributed with
5  * this work for additional information regarding copyright ownership.
6  * The ASF licenses this file to You under the Apache License, Version 2.0
7  * (the "License"); you may not use this file except in compliance with
8  * the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 package org.apache.activemq.transport.reliable;
19
20
21 import java.io.IOException JavaDoc;
22
23 /**
24  * A pluggable strategy for how to deal with dropped packets.
25  *
26  * @version $Revision: 426366 $
27  */
28 public interface ReplayStrategy {
29
30     /**
31      * Deals with a dropped packet.
32      *
33      * @param transport the transport on which the packet was dropped
34      * @param expectedCounter the expected command counter
35      * @param actualCounter the actual command counter
36      * @param nextAvailableCounter TODO
37      * @return true if the command should be buffered or false if it should be discarded
38      */
39     boolean onDroppedPackets(ReliableTransport transport, int expectedCounter, int actualCounter, int nextAvailableCounter) throws IOException JavaDoc;
40
41     void onReceivedPacket(ReliableTransport transport, long expectedCounter);
42
43 }
44
45
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