| /* |
| * |
| * 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.qpid.server; |
| |
| import org.apache.qpid.server.ack.UnacknowledgedMessageMap; |
| import org.apache.qpid.server.ack.UnacknowledgedMessageMapImpl; |
| import org.apache.qpid.server.queue.QueueEntry; |
| import org.apache.qpid.server.queue.AMQMessage; |
| import org.apache.qpid.server.subscription.Subscription; |
| import org.apache.qpid.server.store.StoreContext; |
| import org.apache.qpid.AMQException; |
| import org.apache.log4j.Logger; |
| |
| import java.util.Map; |
| |
| public class ExtractResendAndRequeue implements UnacknowledgedMessageMap.Visitor |
| { |
| private static final Logger _log = Logger.getLogger(ExtractResendAndRequeue.class); |
| |
| private Map<Long, QueueEntry> _msgToRequeue; |
| private Map<Long, QueueEntry> _msgToResend; |
| private boolean _requeueIfUnabletoResend; |
| private StoreContext _storeContext; |
| private UnacknowledgedMessageMap _unacknowledgedMessageMap; |
| |
| public ExtractResendAndRequeue(UnacknowledgedMessageMap unacknowledgedMessageMap, |
| Map<Long, QueueEntry> msgToRequeue, |
| Map<Long, QueueEntry> msgToResend, |
| boolean requeueIfUnabletoResend, |
| StoreContext storeContext) |
| { |
| _unacknowledgedMessageMap = unacknowledgedMessageMap; |
| _msgToRequeue = msgToRequeue; |
| _msgToResend = msgToResend; |
| _requeueIfUnabletoResend = requeueIfUnabletoResend; |
| _storeContext = storeContext; |
| } |
| |
| public boolean callback(final long deliveryTag, QueueEntry message) throws AMQException |
| { |
| |
| AMQMessage msg = message.getMessage(); |
| msg.setRedelivered(true); |
| final Subscription subscription = message.getDeliveredSubscription(); |
| if (subscription != null) |
| { |
| // Consumer exists |
| if (!subscription.isClosed()) |
| { |
| _msgToResend.put(deliveryTag, message); |
| } |
| else // consumer has gone |
| { |
| _msgToRequeue.put(deliveryTag, message); |
| } |
| } |
| else |
| { |
| // Message has no consumer tag, so was "delivered" to a GET |
| // or consumer no longer registered |
| // cannot resend, so re-queue. |
| if (!message.isQueueDeleted()) |
| { |
| if (_requeueIfUnabletoResend) |
| { |
| _msgToRequeue.put(deliveryTag, message); |
| } |
| else |
| { |
| message.discard(_storeContext); |
| _log.info("No DeadLetter Queue and requeue not requested so dropping message:" + message); |
| } |
| } |
| else |
| { |
| message.discard(_storeContext); |
| _log.warn("Message.queue is null and no DeadLetter Queue so dropping message:" + message); |
| } |
| } |
| |
| // false means continue processing |
| return false; |
| } |
| |
| public void visitComplete() |
| { |
| _unacknowledgedMessageMap.clear(); |
| } |
| |
| } |