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}