/** * 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. */ package org.apache.activemq.broker.region.policy; import org.apache.activemq.broker.region.Subscription; import org.apache.activemq.command.ActiveMQDestination; import org.apache.activemq.command.Message; /** * A strategy for choosing which destination is used for dead letter queue messages. * * */ public interface DeadLetterStrategy { /** * Allow pluggable strategy for deciding if message should be sent to a dead letter queue * for example, you might not want to ignore expired or non-persistent messages * @param message * @return true if message should be sent to a dead letter queue */ boolean isSendToDeadLetterQueue(Message message); /** * Returns the dead letter queue for the given message and subscription. */ ActiveMQDestination getDeadLetterQueueFor(Message message, Subscription subscription); /** * @return true if processes expired messages */ public boolean isProcessExpired() ; /** * @param processExpired the processExpired to set */ public void setProcessExpired(boolean processExpired); /** * @return the processNonPersistent */ public boolean isProcessNonPersistent(); /** * @param processNonPersistent the processNonPersistent to set */ public void setProcessNonPersistent(boolean processNonPersistent); /** * Allows for a Message that was already processed by a DLQ to be rolled back in case * of a move or a retry of that message, otherwise the Message would be considered a * duplicate if this strategy is doing Message Auditing. * * @param message */ public void rollback(Message message); /** * The expiration value to use on messages sent to the DLQ, default 0 * @return expiration in milli seconds */ public void setExpiration(long expiration); public long getExpiration(); }