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
|
/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.orcs.db.internal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import org.eclipse.osee.framework.jdk.core.type.OseeCoreException;
import org.eclipse.osee.framework.jdk.core.util.Conditions;
import org.eclipse.osee.logger.Log;
import org.eclipse.osee.orcs.core.ds.DataProxyFactory;
import org.eclipse.osee.orcs.db.internal.loader.DataProxyFactoryProvider;
import org.osgi.framework.Bundle;
import org.osgi.framework.ServiceReference;
/**
* @author Roberto E. Escobar
*/
public class DataProxyFactoryProviderImpl implements DataProxyFactoryProvider {
private final Map<String, DataProxyFactory> proxyClassMap = new ConcurrentHashMap<String, DataProxyFactory>();
private final List<ServiceReference<DataProxyFactory>> pending =
new CopyOnWriteArrayList<ServiceReference<DataProxyFactory>>();
private Log logger;
private Thread thread;
private boolean isReady;
public DataProxyFactoryProviderImpl() {
isReady = false;
}
public void setLogger(Log logger) {
this.logger = logger;
}
public Log getLogger() {
return logger;
}
public void start() {
isReady = true;
thread = new Thread("Register Pending DataProxyFactories") {
@Override
public void run() {
for (ServiceReference<DataProxyFactory> reference : pending) {
try {
register(reference);
} catch (Throwable ex) {
getLogger().error(ex, "Error registering pending data proxy factories");
}
}
pending.clear();
}
};
thread.start();
}
public void stop() {
if (thread != null && thread.isAlive()) {
thread.interrupt();
}
isReady = false;
}
public void addFactory(ServiceReference<DataProxyFactory> reference) throws Exception {
if (isReady) {
register(reference);
} else {
pending.add(reference);
}
}
public void removeFactory(ServiceReference<DataProxyFactory> reference) throws Exception {
if (isReady) {
unregister(reference);
} else {
pending.remove(reference);
}
}
private void unregister(ServiceReference<DataProxyFactory> reference) throws OseeCoreException {
String[] aliases = getAliases(reference);
for (String alias : aliases) {
proxyClassMap.remove(alias);
}
}
private void register(ServiceReference<DataProxyFactory> reference) {
try {
Bundle bundle = reference.getBundle();
DataProxyFactory factory = bundle.getBundleContext().getService(reference);
Conditions.checkNotNull(factory, "DataProxyFactory");
String[] aliases = getAliases(reference);
for (String alias : aliases) {
proxyClassMap.put(alias, factory);
}
} catch (Throwable th) {
getLogger().error(th, "Error registering data proxy [%s]", reference.getProperty("component.name"));
}
}
private String[] getAliases(ServiceReference<DataProxyFactory> reference) throws OseeCoreException {
Object value = reference.getProperty(DataProxyFactory.PROXY_FACTORY_ALIAS);
String[] aliases = null;
if (value instanceof String[]) {
aliases = (String[]) value;
}
Conditions.checkNotNull(aliases, "Aliases", "Error getting [%s]", DataProxyFactory.PROXY_FACTORY_ALIAS);
return aliases;
}
@Override
public DataProxyFactory getFactory(String factoryAlias) {
return proxyClassMap.get(factoryAlias);
}
}
|
