001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.transport.reliable;
018
019import java.io.IOException;
020
021/**
022 * This class keeps around a buffer of old commands which have been sent on
023 * an unreliable transport. The buffers are of type Object as they could be datagrams
024 * or byte[] or ByteBuffer - depending on the underlying transport implementation.
025 * 
026 * 
027 */
028public interface ReplayBuffer {
029
030    /**
031     * Submit a buffer for caching around for a period of time, during which time it can be replayed
032     * to users interested in it.
033     */
034    void addBuffer(int commandId, Object buffer);
035    
036    void setReplayBufferListener(ReplayBufferListener bufferPoolAdapter);
037    
038    void replayMessages(int fromCommandId, int toCommandId, Replayer replayer) throws IOException;
039}