| /* |
| * 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.handler; |
| |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.framing.AMQMethodBody; |
| import org.apache.qpid.framing.MethodRegistry; |
| import org.apache.qpid.framing.QueuePurgeBody; |
| import org.apache.qpid.protocol.AMQConstant; |
| import org.apache.qpid.server.AMQChannel; |
| import org.apache.qpid.server.protocol.AMQProtocolSession; |
| import org.apache.qpid.server.protocol.AMQSessionModel; |
| import org.apache.qpid.server.queue.AMQQueue; |
| import org.apache.qpid.server.queue.QueueRegistry; |
| import org.apache.qpid.server.state.AMQStateManager; |
| import org.apache.qpid.server.state.StateAwareMethodListener; |
| import org.apache.qpid.server.virtualhost.VirtualHost; |
| |
| public class QueuePurgeHandler implements StateAwareMethodListener<QueuePurgeBody> |
| { |
| private static final QueuePurgeHandler _instance = new QueuePurgeHandler(); |
| |
| public static QueuePurgeHandler getInstance() |
| { |
| return _instance; |
| } |
| |
| private final boolean _failIfNotFound; |
| |
| public QueuePurgeHandler() |
| { |
| this(true); |
| } |
| |
| public QueuePurgeHandler(boolean failIfNotFound) |
| { |
| _failIfNotFound = failIfNotFound; |
| } |
| |
| public void methodReceived(AMQStateManager stateManager, QueuePurgeBody body, int channelId) throws AMQException |
| { |
| AMQProtocolSession protocolConnection = stateManager.getProtocolSession(); |
| VirtualHost virtualHost = protocolConnection.getVirtualHost(); |
| QueueRegistry queueRegistry = virtualHost.getQueueRegistry(); |
| |
| AMQChannel channel = protocolConnection.getChannel(channelId); |
| if (channel == null) |
| { |
| throw body.getChannelNotFoundException(channelId); |
| } |
| AMQQueue queue; |
| if(body.getQueue() == null) |
| { |
| |
| //get the default queue on the channel: |
| queue = channel.getDefaultQueue(); |
| |
| if(queue == null) |
| { |
| if(_failIfNotFound) |
| { |
| throw body.getConnectionException(AMQConstant.NOT_ALLOWED,"No queue specified."); |
| } |
| } |
| } |
| else |
| { |
| queue = queueRegistry.getQueue(body.getQueue()); |
| } |
| |
| if(queue == null) |
| { |
| if(_failIfNotFound) |
| { |
| throw body.getChannelException(AMQConstant.NOT_FOUND, "Queue " + body.getQueue() + " does not exist."); |
| } |
| } |
| else |
| { |
| AMQSessionModel session = queue.getExclusiveOwningSession(); |
| |
| if (queue.isExclusive() && (session == null || session.getConnectionModel() != protocolConnection)) |
| { |
| throw body.getConnectionException(AMQConstant.NOT_ALLOWED, |
| "Queue is exclusive, but not created on this Connection."); |
| } |
| |
| long purged = queue.clearQueue(); |
| |
| |
| if(!body.getNowait()) |
| { |
| channel.sync(); |
| MethodRegistry methodRegistry = protocolConnection.getMethodRegistry(); |
| AMQMethodBody responseBody = methodRegistry.createQueuePurgeOkBody(purged); |
| protocolConnection.writeFrame(responseBody.generateFrame(channelId)); |
| |
| } |
| } |
| } |
| } |