1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
*
* 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.exchange;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.AMQSecurityException;
import org.apache.qpid.AMQUnknownExchangeType;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.qmf.ManagementExchange;
import org.apache.qpid.server.configuration.VirtualHostConfiguration;
import org.apache.qpid.server.registry.ApplicationRegistry;
import org.apache.qpid.server.virtualhost.VirtualHost;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
public class DefaultExchangeFactory implements ExchangeFactory
{
private static final Logger _logger = Logger.getLogger(DefaultExchangeFactory.class);
public static final String DEFAULT_DLE_NAME_SUFFIX = "_DLE";
private Map<AMQShortString, ExchangeType<? extends Exchange>> _exchangeClassMap = new HashMap<AMQShortString, ExchangeType<? extends Exchange>>();
private final VirtualHost _host;
public DefaultExchangeFactory(VirtualHost host)
{
_host = host;
registerExchangeType(DirectExchange.TYPE);
registerExchangeType(TopicExchange.TYPE);
registerExchangeType(HeadersExchange.TYPE);
registerExchangeType(FanoutExchange.TYPE);
registerExchangeType(ManagementExchange.TYPE);
}
public void registerExchangeType(ExchangeType<? extends Exchange> type)
{
_exchangeClassMap.put(type.getName(), type);
}
public Collection<ExchangeType<? extends Exchange>> getRegisteredTypes()
{
return _exchangeClassMap.values();
}
public Collection<ExchangeType<? extends Exchange>> getPublicCreatableTypes()
{
Collection<ExchangeType<? extends Exchange>> publicTypes =
new ArrayList<ExchangeType<? extends Exchange>>();
publicTypes.addAll(_exchangeClassMap.values());
//Remove the ManagementExchange type if present, as these
//are private and cannot be created by external means
publicTypes.remove(ManagementExchange.TYPE);
return publicTypes;
}
public Exchange createExchange(String exchange, String type, boolean durable, boolean autoDelete)
throws AMQException
{
return createExchange(new AMQShortString(exchange), new AMQShortString(type), durable, autoDelete, 0);
}
public Exchange createExchange(AMQShortString exchange, AMQShortString type, boolean durable, boolean autoDelete,
int ticket)
throws AMQException
{
// Check access
if (!_host.getSecurityManager().authoriseCreateExchange(autoDelete, durable, exchange, null, null, null, type))
{
String description = "Permission denied: exchange-name '" + exchange.asString() + "'";
throw new AMQSecurityException(description);
}
ExchangeType<? extends Exchange> exchType = _exchangeClassMap.get(type);
if (exchType == null)
{
throw new AMQUnknownExchangeType("Unknown exchange type: " + type,null);
}
Exchange e = exchType.newInstance(_host, exchange, durable, ticket, autoDelete);
return e;
}
public void initialise(VirtualHostConfiguration hostConfig)
{
if (hostConfig == null)
{
return;
}
for(Object className : hostConfig.getCustomExchanges())
{
try
{
ExchangeType<?> exchangeType = ApplicationRegistry.getInstance().getPluginManager().getExchanges().get(String.valueOf(className));
if (exchangeType == null)
{
_logger.error("No such custom exchange class found: \""+String.valueOf(className)+"\"");
continue;
}
Class<? extends ExchangeType> exchangeTypeClass = exchangeType.getClass();
ExchangeType<? extends ExchangeType> type = exchangeTypeClass.newInstance();
registerExchangeType(type);
}
catch (ClassCastException classCastEx)
{
_logger.error("No custom exchange class: \""+String.valueOf(className)+"\" cannot be registered as it does not extend class \""+ExchangeType.class+"\"");
}
catch (IllegalAccessException e)
{
_logger.error("Cannot create custom exchange class: \""+String.valueOf(className)+"\"",e);
}
catch (InstantiationException e)
{
_logger.error("Cannot create custom exchange class: \""+String.valueOf(className)+"\"",e);
}
}
}
}
|
