1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.transport; |
12 | |
|
13 | |
import org.mule.api.MuleException; |
14 | |
import org.mule.api.MuleRuntimeException; |
15 | |
import org.mule.api.context.WorkManager; |
16 | |
import org.mule.api.endpoint.ImmutableEndpoint; |
17 | |
import org.mule.api.transport.Connectable; |
18 | |
import org.mule.api.transport.ConnectionStrategy; |
19 | |
import org.mule.api.transport.Connector; |
20 | |
import org.mule.config.i18n.CoreMessages; |
21 | |
import org.mule.context.notification.ConnectionNotification; |
22 | |
import org.mule.util.ClassUtils; |
23 | |
|
24 | |
import java.beans.ExceptionListener; |
25 | |
|
26 | |
import org.apache.commons.logging.Log; |
27 | |
import org.apache.commons.logging.LogFactory; |
28 | |
|
29 | |
|
30 | |
|
31 | |
|
32 | |
public abstract class AbstractConnectable implements Connectable, ExceptionListener |
33 | |
{ |
34 | |
|
35 | |
|
36 | |
|
37 | |
|
38 | 2 | protected transient Log logger = LogFactory.getLog(getClass()); |
39 | |
|
40 | |
protected final ImmutableEndpoint endpoint; |
41 | |
protected final AbstractConnector connector; |
42 | |
|
43 | 2 | protected boolean disposed = false; |
44 | |
|
45 | |
protected ConnectionStrategy connectionStrategy; |
46 | |
|
47 | 2 | protected volatile boolean connecting = false; |
48 | 2 | protected volatile boolean connected = false; |
49 | |
|
50 | |
public AbstractConnectable(ImmutableEndpoint endpoint) |
51 | 2 | { |
52 | 2 | this.endpoint = endpoint; |
53 | 2 | this.connector = (AbstractConnector) endpoint.getConnector(); |
54 | |
|
55 | 2 | connectionStrategy = endpoint.getConnectionStrategy(); |
56 | 2 | if (connectionStrategy instanceof AbstractConnectionStrategy) |
57 | |
{ |
58 | |
|
59 | |
|
60 | |
|
61 | 2 | final AbstractConnectionStrategy connStrategy = (AbstractConnectionStrategy) connectionStrategy; |
62 | 2 | if (connStrategy.isDoThreading()) |
63 | |
{ |
64 | 0 | if (logger.isDebugEnabled()) |
65 | |
{ |
66 | 0 | logger.debug("Overriding doThreading to false on " + connStrategy); |
67 | |
} |
68 | 0 | connStrategy.setDoThreading(false); |
69 | |
} |
70 | |
} |
71 | |
|
72 | 2 | if (isDoThreading()) |
73 | |
{ |
74 | |
try |
75 | |
{ |
76 | 2 | connector.getDispatcherWorkManager(); |
77 | |
} |
78 | 0 | catch (MuleException e) |
79 | |
{ |
80 | 0 | disposeAndLogException(); |
81 | 0 | throw new MuleRuntimeException(CoreMessages.failedToStart("WorkManager"), e); |
82 | 2 | } |
83 | |
} |
84 | 2 | } |
85 | |
|
86 | |
protected void disposeAndLogException() |
87 | |
{ |
88 | |
try |
89 | |
{ |
90 | 0 | dispose(); |
91 | |
} |
92 | 0 | catch (Throwable t) |
93 | |
{ |
94 | 0 | logger.error("Could not dispose of the message dispatcher!", t); |
95 | 0 | } |
96 | 0 | } |
97 | |
|
98 | |
|
99 | |
|
100 | |
|
101 | |
|
102 | |
|
103 | |
public void exceptionThrown(Exception e) |
104 | |
{ |
105 | |
try |
106 | |
{ |
107 | 0 | getConnector().handleException(e); |
108 | |
} |
109 | |
finally |
110 | |
{ |
111 | 0 | dispose(); |
112 | 0 | } |
113 | 0 | } |
114 | |
|
115 | |
public boolean validate() |
116 | |
{ |
117 | |
|
118 | 8 | return !disposed; |
119 | |
} |
120 | |
|
121 | |
public void activate() |
122 | |
{ |
123 | |
|
124 | 8 | } |
125 | |
|
126 | |
public void passivate() |
127 | |
{ |
128 | |
|
129 | 8 | } |
130 | |
|
131 | |
|
132 | |
|
133 | |
|
134 | |
public final synchronized void dispose() |
135 | |
{ |
136 | 0 | if (!disposed) |
137 | |
{ |
138 | |
try |
139 | |
{ |
140 | |
try |
141 | |
{ |
142 | 0 | this.disconnect(); |
143 | |
} |
144 | 0 | catch (Exception e) |
145 | |
{ |
146 | |
|
147 | 0 | logger.warn(e.getMessage(), e); |
148 | 0 | } |
149 | |
|
150 | 0 | this.doDispose(); |
151 | |
} |
152 | |
finally |
153 | |
{ |
154 | 0 | disposed = true; |
155 | 0 | } |
156 | |
} |
157 | 0 | } |
158 | |
|
159 | |
public Connector getConnector() |
160 | |
{ |
161 | 0 | return connector; |
162 | |
} |
163 | |
|
164 | |
public ImmutableEndpoint getEndpoint() |
165 | |
{ |
166 | 0 | return endpoint; |
167 | |
} |
168 | |
|
169 | |
public synchronized void connect() throws Exception |
170 | |
{ |
171 | 10 | if (disposed) |
172 | |
{ |
173 | 0 | throw new IllegalStateException("Requester/dispatcher has been disposed; cannot connect to resource"); |
174 | |
} |
175 | |
|
176 | 10 | if (connected) |
177 | |
{ |
178 | 6 | return; |
179 | |
} |
180 | |
|
181 | 4 | if (!connecting) |
182 | |
{ |
183 | 2 | connecting = true; |
184 | |
|
185 | 2 | if (logger.isDebugEnabled()) |
186 | |
{ |
187 | 0 | logger.debug("Connecting: " + this); |
188 | |
} |
189 | |
|
190 | 2 | connectionStrategy.connect(this); |
191 | |
|
192 | 2 | logger.info("Connected: " + this); |
193 | 2 | return; |
194 | |
} |
195 | |
|
196 | |
try |
197 | |
{ |
198 | |
|
199 | 2 | connectionStrategy.connect(connector); |
200 | |
|
201 | 2 | this.doConnect(); |
202 | 2 | connected = true; |
203 | 2 | connecting = false; |
204 | |
|
205 | 2 | connector.fireNotification(new ConnectionNotification(this, getConnectEventId(endpoint), |
206 | |
ConnectionNotification.CONNECTION_CONNECTED)); |
207 | |
} |
208 | 0 | catch (Exception e) |
209 | |
{ |
210 | 0 | connected = false; |
211 | 0 | connecting = false; |
212 | |
|
213 | 0 | connector.fireNotification(new ConnectionNotification(this, getConnectEventId(endpoint), |
214 | |
ConnectionNotification.CONNECTION_FAILED)); |
215 | |
|
216 | 0 | if (e instanceof ConnectException) |
217 | |
{ |
218 | 0 | throw (ConnectException) e; |
219 | |
} |
220 | |
else |
221 | |
{ |
222 | 0 | throw new ConnectException(e, this); |
223 | |
} |
224 | 2 | } |
225 | 2 | } |
226 | |
|
227 | |
public synchronized void disconnect() throws Exception |
228 | |
{ |
229 | 0 | if (!connected) |
230 | |
{ |
231 | 0 | return; |
232 | |
} |
233 | |
|
234 | 0 | if (logger.isDebugEnabled()) |
235 | |
{ |
236 | 0 | logger.debug("Disconnecting: " + this); |
237 | |
} |
238 | |
|
239 | 0 | this.doDisconnect(); |
240 | 0 | connected = false; |
241 | |
|
242 | 0 | logger.info("Disconnected: " + this); |
243 | |
|
244 | 0 | connector.fireNotification(new ConnectionNotification(this, getConnectEventId(endpoint), |
245 | |
ConnectionNotification.CONNECTION_DISCONNECTED)); |
246 | 0 | } |
247 | |
|
248 | |
protected String getConnectEventId(ImmutableEndpoint endpoint) |
249 | |
{ |
250 | 2 | return connector.getName() + ".dispatcher(" + endpoint.getEndpointURI().getUri() + ")"; |
251 | |
} |
252 | |
|
253 | |
public final boolean isConnected() |
254 | |
{ |
255 | 0 | return connected; |
256 | |
} |
257 | |
|
258 | |
protected boolean isDoThreading () |
259 | |
{ |
260 | 2 | return connector.getDispatcherThreadingProfile().isDoThreading(); |
261 | |
} |
262 | |
|
263 | |
|
264 | |
|
265 | |
|
266 | |
|
267 | |
|
268 | |
public String getConnectionDescription() |
269 | |
{ |
270 | 0 | return endpoint.getEndpointURI().toString(); |
271 | |
} |
272 | |
|
273 | |
public synchronized void reconnect() throws Exception |
274 | |
{ |
275 | 0 | disconnect(); |
276 | 0 | connect(); |
277 | 0 | } |
278 | |
|
279 | |
protected abstract void doDispose(); |
280 | |
|
281 | |
protected abstract void doConnect() throws Exception; |
282 | |
|
283 | |
protected abstract void doDisconnect() throws Exception; |
284 | |
|
285 | |
|
286 | |
public String toString() |
287 | |
{ |
288 | 4 | final StringBuffer sb = new StringBuffer(80); |
289 | 4 | sb.append(ClassUtils.getSimpleName(this.getClass())); |
290 | 4 | sb.append("{this=").append(Integer.toHexString(System.identityHashCode(this))); |
291 | 4 | sb.append(", endpoint=").append(endpoint.getEndpointURI().getUri()); |
292 | 4 | sb.append(", disposed=").append(disposed); |
293 | 4 | sb.append('}'); |
294 | 4 | return sb.toString(); |
295 | |
} |
296 | |
} |