01 /*
02 *
03 * Licensed to the Apache Software Foundation (ASF) under one
04 * or more contributor license agreements. See the NOTICE file
05 * distributed with this work for additional information
06 * regarding copyright ownership. The ASF licenses this file
07 * to you under the Apache License, Version 2.0 (the
08 * "License"); you may not use this file except in compliance
09 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 */
21 package org.apache.qpid.server.handler;
22
23 import org.apache.qpid.AMQException;
24 import org.apache.qpid.framing.ExchangeDeleteBody;
25 import org.apache.qpid.framing.ExchangeDeleteOkBody;
26 import org.apache.qpid.protocol.AMQConstant;
27 import org.apache.qpid.server.exchange.ExchangeInUseException;
28 import org.apache.qpid.server.exchange.ExchangeRegistry;
29 import org.apache.qpid.server.protocol.AMQProtocolSession;
30 import org.apache.qpid.server.security.access.Permission;
31 import org.apache.qpid.server.state.AMQStateManager;
32 import org.apache.qpid.server.state.StateAwareMethodListener;
33 import org.apache.qpid.server.virtualhost.VirtualHost;
34
35 public class ExchangeDeleteHandler implements StateAwareMethodListener<ExchangeDeleteBody>
36 {
37 private static final ExchangeDeleteHandler _instance = new ExchangeDeleteHandler();
38
39 public static ExchangeDeleteHandler getInstance()
40 {
41 return _instance;
42 }
43
44 private ExchangeDeleteHandler()
45 {
46 }
47
48 public void methodReceived(AMQStateManager stateManager, ExchangeDeleteBody body, int channelId) throws AMQException
49 {
50 AMQProtocolSession session = stateManager.getProtocolSession();
51 VirtualHost virtualHost = session.getVirtualHost();
52 ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry();
53
54 //Perform ACLs
55 if (!virtualHost.getAccessManager().authoriseDelete(session,
56 exchangeRegistry.getExchange(body.getExchange())))
57 {
58 throw body.getConnectionException(AMQConstant.ACCESS_REFUSED, "Permission denied");
59 }
60
61 try
62 {
63 exchangeRegistry.unregisterExchange(body.getExchange(), body.getIfUnused());
64
65 ExchangeDeleteOkBody responseBody = session.getMethodRegistry().createExchangeDeleteOkBody();
66
67 session.writeFrame(responseBody.generateFrame(channelId));
68 }
69 catch (ExchangeInUseException e)
70 {
71 // TODO: sort out consistent channel close mechanism that does all clean up etc.
72 }
73
74 }
75 }
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