-
Notifications
You must be signed in to change notification settings - Fork 162
/
ClusterJMSService.java
207 lines (184 loc) · 7.87 KB
/
ClusterJMSService.java
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
/*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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.uberfire.commons.cluster;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.Session;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ClusterJMSService implements ClusterService {
private static final Logger LOGGER = LoggerFactory.getLogger(ClusterJMSService.class);
private Connection connection;
private ClusterParameters clusterParameters;
private List<Session> consumerSessions = new ArrayList<>();
public ClusterJMSService() {
clusterParameters = loadParameters();
}
@Override
public void connect() {
try {
final String jmsUserName = clusterParameters.getJmsUserName();
final String jmsPassword = clusterParameters.getJmsPassword();
final ConnectionFactory factory;
switch (clusterParameters.getConnectionMode()) {
case REMOTE:
final String jmsURL = clusterParameters.getProviderUrl();
factory = createRemoteConnectionFactory(jmsURL,
jmsUserName,
jmsPassword);
break;
case JNDI:
final InitialContext context = new InitialContext(clusterParameters.getInitialContextFactory());
factory = createJNDIConnectionFactory(context);
break;
default:
throw new RuntimeException("Error setting the cluster mode (should be defined as REMOTE or JNDI");
}
if (thereIsNoCredentials(jmsUserName, jmsPassword)) {
connection = factory.createConnection();
} else {
connection = factory.createConnection(jmsUserName, jmsPassword);
}
connection.setExceptionListener(new JMSExceptionListener());
connection.start();
} catch (Exception e) {
LOGGER.error("Error connecting on JMS " + e.getMessage());
throw new RuntimeException(e);
}
}
private boolean thereIsNoCredentials(String jmsUserName, String jmsPassword) {
return jmsUserName == null && jmsPassword == null;
}
ConnectionFactory createJNDIConnectionFactory(final InitialContext context) throws NamingException {
return (ConnectionFactory) context.lookup(clusterParameters.getJmsConnectionFactoryJndiName());
}
ConnectionFactory createRemoteConnectionFactory(final String jmsURL,
final String jmsUserName,
final String jmsPassword) {
return new ActiveMQConnectionFactory(jmsURL,
jmsUserName,
jmsPassword);
}
private ClusterParameters loadParameters() {
return new ClusterParameters();
}
@Override
public <T> void createConsumer(DestinationType type,
String channel,
Class<T> objectMessageClass,
Consumer<T> listener) {
try {
Session session = createConsumerSession();
Destination topic = createDestination(type,
channel,
session);
MessageConsumer messageConsumer = session.createConsumer(topic);
messageConsumer.setMessageListener(message -> {
if (message instanceof ObjectMessage) {
try {
Serializable object = ((ObjectMessage) message).getObject();
if (objectMessageClass.isInstance(object)) {
listener.accept((T) object);
}
} catch (JMSException e) {
LOGGER.error("Exception receiving JMS message: " + e.getMessage());
}
}
});
} catch (Exception e) {
LOGGER.error("Error creating JMS Watch Service: " + e.getMessage());
}
}
@Override
public synchronized void broadcast(DestinationType type,
String channel,
Serializable object) {
Session session = null;
try {
session = connection.createSession(false,
Session.AUTO_ACKNOWLEDGE);
Destination destination = createDestination(type,
channel,
session);
ObjectMessage objectMessage = session.createObjectMessage(object);
MessageProducer messageProducer = session.createProducer(destination);
messageProducer.send(objectMessage);
} catch (JMSException e) {
LOGGER.error("Exception on JMS broadcast: " + e.getMessage());
} finally {
if (session != null) {
try {
session.close();
} catch (JMSException e) {
LOGGER.error("Exception on closing JMS session (this could trigger a leak) " + e.getMessage());
}
}
}
}
private Destination createDestination(DestinationType type,
String channel,
Session session) throws JMSException {
if (type.equals(DestinationType.LoadBalancer)) {
return session.createQueue(channel);
}
return session.createTopic(channel);
}
private Session createConsumerSession() {
try {
Session session = connection.createSession(false,
Session.AUTO_ACKNOWLEDGE);
consumerSessions.add(session);
return session;
} catch (JMSException e) {
LOGGER.error("Error creating session " + e.getMessage());
throw new RuntimeException(e);
}
}
@Override
public boolean isAppFormerClustered() {
return clusterParameters.isAppFormerClustered();
}
public static class JMSExceptionListener implements ExceptionListener {
@Override
public void onException(JMSException e) {
LOGGER.error("JMSException: " + e.getMessage());
}
}
@Override
public void close() {
try {
for (Session s : consumerSessions) {
s.close();
}
connection.close();
} catch (JMSException e) {
LOGGER.error("Exception closing JMS connection and consumerSessions: " + e.getMessage());
}
}
}