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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/*
*
* 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.management.configuration;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.UUID;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.qpid.management.Messages;
import org.apache.qpid.management.Names;
import org.apache.qpid.management.Protocol;
import org.apache.qpid.management.domain.handler.impl.ConfigurationMessageHandler;
import org.apache.qpid.management.domain.handler.impl.EventContentMessageHandler;
import org.apache.qpid.management.domain.handler.impl.HeartBeatIndicationMessageHandler;
import org.apache.qpid.management.domain.handler.impl.InstrumentationMessageHandler;
import org.apache.qpid.management.domain.handler.impl.MethodResponseMessageHandler;
import org.apache.qpid.management.domain.handler.impl.SchemaResponseMessageHandler;
import org.apache.qpid.transport.util.Logger;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* Director used for coordinating the build process of configuration.
* This is the only component which has a read-write permission on Configuration object.
*/
public class Configurator extends DefaultHandler
{
private final static Logger LOGGER = Logger.get(Configurator.class);
/**
* Default (empty) parser used when there's no need to process data (non relevant elements).
*/
final static IParser DEFAULT_PARSER = new IParser() {
public void setCurrrentAttributeValue (String value)
{
}
public void setCurrentAttributeName (String name)
{
}
};
IParser _brokerConfigurationParser = new BrokerConnectionDataParser();
IParser _workerManagerConfigurationParser = new WorkerManagerConfigurationParser();
IParser _currentParser = DEFAULT_PARSER;
/**
* Delegates the processing to the current parser.
*/
@Override
public void characters (char[] ch, int start, int length) throws SAXException
{
String value = new String(ch,start,length).trim();
if (value.length() != 0) {
_currentParser.setCurrrentAttributeValue(value);
}
}
/**
* Here is defined what parser needs to be used for processing the current data.
*/
@Override
public void startElement (String uri, String localName, String name, Attributes attributes) throws SAXException
{
switch(Tag.get(name))
{
case BROKERS :
{
_currentParser = _brokerConfigurationParser;
break;
}
case WORK_MANAGER :
{
_currentParser = _workerManagerConfigurationParser;
break;
}
}
}
@Override
public void endElement (String uri, String localName, String name) throws SAXException
{
_currentParser.setCurrentAttributeName(name);
}
/**
* Builds whole configuration.
*
* @throws ConfigurationException when the build fails.
*/
public void configure() throws ConfigurationException
{
BufferedReader reader = null;
try
{
String initialConfigFileName = System.getProperty(Names.QMAN_CONFIG_OPTION_NAME);
if (initialConfigFileName != null && initialConfigFileName.trim().length() != 0)
{
File initialConfigurationFile = new File(initialConfigFileName);
if (initialConfigurationFile.canRead())
{
SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
reader = new BufferedReader(
new InputStreamReader(
new FileInputStream(initialConfigFileName)));
InputSource source = new InputSource(reader);
parser.parse(source, this);
} else {
LOGGER.warn(
Messages.QMAN_300004_INVALID_CONFIGURATION_FILE,
initialConfigFileName);
}
}
addMandatoryManagementMessageHandlers();
addMandatoryMethodReplyMessageHandlers();
} catch (Exception exception)
{
throw new ConfigurationException(exception);
} finally
{
try
{
reader.close();
} catch (Exception ignore)
{
}
}
}
/**
* Creates and return a value object (BrokerConnectionData) with the given parameters.
* Note that that object will be stored on configuration and it could be used to set a connection with the broker.
* This happens when the "initialPoolCapacity" is greater than 0 : in this case the caller is indicatinf that it wants to open
* one or more connections immediately at startup and therefore Q-Man will try to do that.
*
* @param host the hostname where the broker is running.
* @param port the port where the broker is running.
* @param username the username for connecting with the broker.
* @param password the password for connecting with the broker.
* @param virtualHost the virtual host.
* @param initialPoolCapacity the number of the connection that must be immediately opened.
* @param maxPoolCapacity the maximum number of opened connection.
* @param maxWaitTimeout the maximum amount of time that a client will wait for obtaining a connection.
* @return the value object containing the data above.
* @throws BrokerAlreadyConnectedException when the broker is already connected.
* @throws BrokerConnectionException when a connection cannot be estabilished.
*/
public BrokerConnectionData createAndReturnBrokerConnectionData(
UUID brokerId,
String host,
int port,
String username,
String password,
String virtualHost,
int initialPoolCapacity,
int maxPoolCapacity,
long maxWaitTimeout) throws BrokerAlreadyConnectedException, BrokerConnectionException
{
BrokerConnectionData data = new BrokerConnectionData(
host,
port,
virtualHost,
username,
password,
initialPoolCapacity,
maxPoolCapacity,
maxWaitTimeout);
Configuration.getInstance().addBrokerConnectionData(brokerId, data);
return data;
}
/**
* Configures the mandatory management message handlers.
*/
void addMandatoryMethodReplyMessageHandlers ()
{
Configuration.getInstance().addMethodReplyMessageHandlerMapping(
new MessageHandlerMapping(
Protocol.OPERATION_INVOCATION_RESPONSE_OPCODE,
new MethodResponseMessageHandler()));
Configuration.getInstance().addMethodReplyMessageHandlerMapping(
new MessageHandlerMapping(
Protocol.SCHEMA_RESPONSE_OPCODE,
new SchemaResponseMessageHandler()));
}
/**
* Configures the mandatory management message handlers.
*/
void addMandatoryManagementMessageHandlers ()
{
Configuration.getInstance().addManagementMessageHandlerMapping(
new MessageHandlerMapping(
Protocol.INSTRUMENTATION_CONTENT_RESPONSE_OPCODE,
new InstrumentationMessageHandler()));
Configuration.getInstance().addManagementMessageHandlerMapping(
new MessageHandlerMapping(
Protocol.CONFIGURATION_CONTENT_RESPONSE_OPCDE,
new ConfigurationMessageHandler()));
Configuration.getInstance().addManagementMessageHandlerMapping(
new MessageHandlerMapping(
Protocol.EVENT_CONTENT_RESPONSE_OPCDE,
new EventContentMessageHandler()));
Configuration.getInstance().addManagementMessageHandlerMapping(
new MessageHandlerMapping(
Protocol.HEARTBEAT_INDICATION_RESPONSE_OPCODE,
new HeartBeatIndicationMessageHandler()));
}
}
|
