Source Code Cross Referenced for MessageHandlerImpl.java in  » ESB » open-esb » com » sun » jbi » binding » jms » handler » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ESB » open esb » com.sun.jbi.binding.jms.handler 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * BEGIN_HEADER - DO NOT EDIT
003:         *
004:         * The contents of this file are subject to the terms
005:         * of the Common Development and Distribution License
006:         * (the "License").  You may not use this file except
007:         * in compliance with the License.
008:         *
009:         * You can obtain a copy of the license at
010:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
011:         * See the License for the specific language governing
012:         * permissions and limitations under the License.
013:         *
014:         * When distributing Covered Code, include this CDDL
015:         * HEADER in each file and include the License file at
016:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
017:         * If applicable add the following below this CDDL HEADER,
018:         * with the fields enclosed by brackets "[]" replaced with
019:         * your own identifying information: Portions Copyright
020:         * [year] [name of copyright owner]
021:         */
022:
023:        /*
024:         * @(#)MessageHandlerImpl.java
025:         * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
026:         *
027:         * END_HEADER - DO NOT EDIT
028:         */
029:        package com.sun.jbi.binding.jms.handler;
030:
031:        import com.sun.jbi.StringTranslator;
032:
033:        import com.sun.jbi.binding.jms.EndpointBean;
034:        import com.sun.jbi.binding.jms.JMSBindingContext;
035:        import com.sun.jbi.binding.jms.JMSBindingResources;
036:        import com.sun.jbi.binding.jms.MessageRegistry;
037:
038:        import com.sun.jbi.binding.jms.mq.MQDestination;
039:        import com.sun.jbi.binding.jms.mq.MQManager;
040:        import com.sun.jbi.binding.jms.mq.MQSession;
041:
042:        import com.sun.jbi.binding.jms.config.ConfigConstants;
043:        import com.sun.jbi.binding.jms.util.UtilBase;
044:
045:        import java.util.logging.Logger;
046:
047:        import javax.jbi.messaging.DeliveryChannel;
048:        import javax.jbi.messaging.ExchangeStatus;
049:        import javax.jbi.messaging.MessageExchange;
050:        import javax.jbi.messaging.MessagingException;
051:
052:        import javax.jbi.servicedesc.ServiceEndpoint;
053:
054:        import javax.jms.Message;
055:
056:        import javax.xml.namespace.QName;
057:
058:        /**
059:         * Implementation for a message handler.
060:         *
061:         * @author Sun Microsystems Inc.
062:         */
063:        class MessageHandlerImpl extends UtilBase implements  MessageHandler,
064:                JMSBindingResources {
065:            /**
066:             *  Logger.
067:             */
068:            protected Logger mLogger;
069:            /**
070:             *  Translator.
071:             */
072:            protected StringTranslator mStringTranslator;
073:            /**
074:             *  Bean.
075:             */
076:            private EndpointBean mBean;
077:            /**
078:             * Message.
079:             */
080:            private Message mMessage;
081:            /**
082:             *  Message exchange.
083:             */
084:            private MessageExchange mExchange;
085:            /**
086:             * Current operation.
087:             */
088:            private QName mCurrentOperation;
089:
090:            /**
091:             * Creates a new MessageHandlerImpl object.
092:             */
093:            public MessageHandlerImpl() {
094:                mLogger = JMSBindingContext.getInstance().getLogger();
095:                mStringTranslator = JMSBindingContext.getInstance()
096:                        .getStringTranslator();
097:            }
098:
099:            /**
100:             * Gets the artifact.
101:             *
102:             * @param id id.
103:             *
104:             * @return artifact object.
105:             */
106:            public Object getArtifact(String id) {
107:                MessageRegistry reg = JMSBindingContext.getInstance()
108:                        .getMessageRegistry();
109:
110:                return reg.getObject(id);
111:            }
112:
113:            /**
114:             * Setter for property mBean.
115:             *
116:             * @param mBean New value of property mBean.
117:             */
118:            public void setBean(EndpointBean mBean) {
119:                this .mBean = mBean;
120:            }
121:
122:            /**
123:             * Getter for property mBean.
124:             *
125:             * @return Value of property mBean.
126:             */
127:            public EndpointBean getBean() {
128:                return mBean;
129:            }
130:
131:            /**
132:             * Sets the current operation.
133:             *
134:             * @param op operation q name.
135:             */
136:            public void setCurrentOperation(QName op) {
137:                mCurrentOperation = op;
138:            }
139:
140:            /**
141:             * Gets the current operation.
142:             *
143:             * @return current operation.
144:             */
145:            public QName getCurrentOperation() {
146:                return mCurrentOperation;
147:            }
148:
149:            /**
150:             * Sets the error.
151:             *
152:             * @param err error string.
153:             */
154:            public void setError(String err) {
155:                super .setError(err);
156:            }
157:
158:            /**
159:             * Gets the error.
160:             *
161:             * @return error string.
162:             */
163:            public String getError() {
164:                return super .getError();
165:            }
166:
167:            /**
168:             * Sets the exception.
169:             *
170:             * @param ex exception.
171:             */
172:            public void setException(Exception ex) {
173:                super .setException(ex);
174:            }
175:
176:            /**
177:             * Gets the exception.
178:             *
179:             * @return exception.
180:             */
181:            public Exception getException() {
182:                return super .getException();
183:            }
184:
185:            /**
186:             * Sets the JMS message.
187:             *
188:             * @param msg JMSmesage.
189:             */
190:            public void setJMSMessage(Message msg) {
191:                mMessage = msg;
192:            }
193:
194:            /**
195:             * Gets the JMS message.
196:             *
197:             * @return JMS message.
198:             */
199:            public Message getJMSMessage() {
200:                return mMessage;
201:            }
202:
203:            /**
204:             *Sets the NMR headers.
205:             */
206:            public void setNMSHeaders() {
207:                QName servicename = new QName(mBean
208:                        .getValue(ConfigConstants.SERVICE_NAMESPACE), mBean
209:                        .getValue(ConfigConstants.SERVICENAME));
210:                mLogger.fine("Namespace "
211:                        + mBean.getValue(ConfigConstants.SERVICE_NAMESPACE));
212:
213:                mLogger.fine("Service :"
214:                        + mBean.getValue(ConfigConstants.SERVICENAME));
215:
216:                mLogger.fine("Endpoint :"
217:                        + mBean.getValue(ConfigConstants.ENDPOINTNAME));
218:
219:                String endpointname = mBean
220:                        .getValue(ConfigConstants.ENDPOINTNAME);
221:                ServiceEndpoint ref = null;
222:
223:                try {
224:                    ref = mBean.getServiceEndpoint();
225:
226:                    if (ref == null) {
227:                        setServiceEndpoint();
228:                        ref = mBean.getServiceEndpoint();
229:
230:                        if (ref == null) {
231:                            mExchange = null;
232:                            mLogger.severe(mStringTranslator.getString(
233:                                    JMS_CANNOT_GET_SERVICE, servicename
234:                                            .toString()));
235:                            setError(mStringTranslator.getString(
236:                                    JMS_CANNOT_GET_SERVICE, servicename
237:                                            .toString()));
238:
239:                            return;
240:                        }
241:                    }
242:
243:                    QName iqname = new QName(mBean
244:                            .getValue(ConfigConstants.INTERFACE_NAMESPACE),
245:                            mBean.getValue(ConfigConstants.INTERFACE_LOCALNAME));
246:                    mExchange.setService(mBean.getServiceEndpoint()
247:                            .getServiceName());
248:                    mExchange.setEndpoint(ref);
249:                    mExchange.setInterfaceName(iqname);
250:                    mExchange.setOperation(getCurrentOperation());
251:                } catch (Exception e) {
252:                    e.printStackTrace();
253:                    setException(e);
254:                }
255:            }
256:
257:            /**
258:             * Sets the NMR message.
259:             *
260:             * @param exch NMR msg.
261:             */
262:            public void setNMSMessage(MessageExchange exch) {
263:                mExchange = exch;
264:            }
265:
266:            /**
267:             * Gets the nMR message.
268:             *
269:             * @return NMR msg.
270:             */
271:            public MessageExchange getNMSMessage() {
272:                return mExchange;
273:            }
274:
275:            /**
276:             * Get session.
277:             *
278:             * @return MQ session.
279:             */
280:            public MQSession getSession() {
281:                MQSession session = null;
282:
283:                while (session == null) {
284:                    //this sshud be wait / notify not buys waiting. 
285:                    // will change it soon
286:                    session = JMSBindingContext.getInstance().getMQManager()
287:                            .getSession(false, mBean);
288:                }
289:
290:                try {
291:                    session.init();
292:                } catch (Exception e) {
293:                    e.printStackTrace();
294:                    setException(e);
295:                    JMSBindingContext.getInstance().getMQManager()
296:                            .releaseSession(session);
297:                    session = null;
298:                }
299:
300:                return session;
301:            }
302:
303:            /**
304:             * Checks if the ME can be terminated.
305:             *
306:             * @return true if can terminate.
307:             */
308:            public boolean canTerminateConsumer() {
309:                if (mExchange.getPattern().toString().equals(
310:                        ConfigConstants.IN_ONLY)) {
311:                    if (mExchange.getStatus() == ExchangeStatus.DONE) {
312:                        mLogger.fine(mStringTranslator.getString(
313:                                JMS_INONLY_DONE, mExchange.getExchangeId()));
314:                    } else {
315:                        mLogger.fine(mStringTranslator.getString(
316:                                JMS_INONLY_ERROR, mExchange.getExchangeId()));
317:                    }
318:
319:                    //Update message history here         
320:                    return true;
321:                }
322:
323:                if (mExchange.getPattern().toString().equals(
324:                        ConfigConstants.ROBUST_IN_ONLY)) {
325:                    if (mExchange.getStatus() == ExchangeStatus.DONE) {
326:                        mLogger.fine(mStringTranslator.getString(
327:                                JMS_ROBUSTINONLY_DONE, mExchange
328:                                        .getExchangeId()));
329:
330:                        //Update message history here
331:                        return true;
332:                    }
333:
334:                    else {
335:                        mLogger.fine(mStringTranslator.getString(
336:                                JMS_ROBUSTINONLY_DONE, mExchange
337:                                        .getExchangeId()));
338:
339:                        return false;
340:                    }
341:                }
342:
343:                if (mExchange.getPattern().toString().equals(
344:                        ConfigConstants.IN_OPTIONAL_OUT)) {
345:                    mLogger.info(mStringTranslator.getString(
346:                            JMS_INOPTOUT_SUPPORT, mExchange.getExchangeId()));
347:
348:                    return true;
349:                }
350:
351:                return false;
352:            }
353:
354:            /**
355:             * Can or cannot end a exchange.
356:             *
357:             * @return true if can terminate.
358:             */
359:            public boolean canTerminateProvider() {
360:                if (mExchange.getPattern().toString().equals(
361:                        ConfigConstants.ROBUST_IN_ONLY)) {
362:                    if (mExchange.getStatus() == ExchangeStatus.DONE) {
363:                        mLogger.fine(mStringTranslator.getString(
364:                                JMS_ROBUSTINONLY_DONE, mExchange
365:                                        .getExchangeId()));
366:
367:                        //Update message history here
368:                        return true;
369:                    } else if (mExchange.getStatus() == ExchangeStatus.ERROR) {
370:                        mLogger.fine(mStringTranslator.getString(
371:                                JMS_ROBUSTINONLY_ERROR, mExchange
372:                                        .getExchangeId()));
373:
374:                        //Update message history here
375:                        return true;
376:                    } else {
377:                        return false;
378:                    }
379:                }
380:
381:                if (mExchange.getPattern().toString().equals(
382:                        ConfigConstants.IN_OUT)) {
383:                    if (mExchange.getStatus() == ExchangeStatus.DONE) {
384:                        mLogger.fine(mStringTranslator.getString(
385:                                JMS_INOUT_DONE, mExchange.getExchangeId()));
386:
387:                        //Update message history here
388:                        return true;
389:                    } else if (mExchange.getStatus() == ExchangeStatus.ERROR) {
390:                        mLogger.fine(mStringTranslator.getString(
391:                                JMS_INOUT_ERROR, mExchange.getExchangeId()));
392:
393:                        //Update message history here
394:                        return true;
395:                    } else {
396:                        return false;
397:                    }
398:                }
399:
400:                if (mExchange.getPattern().toString().equals(
401:                        ConfigConstants.IN_OPTIONAL_OUT)) {
402:                    mLogger.info(mStringTranslator.getString(
403:                            JMS_INOPTOUT_SUPPORT, mExchange.getExchangeId()));
404:
405:                    return true;
406:                }
407:
408:                return false;
409:            }
410:
411:            /**
412:             * Clear.
413:             */
414:            public void clear() {
415:                super .clear();
416:            }
417:
418:            /**
419:             * Deregisters the Message.
420:             *
421:             * @param id message id.
422:             */
423:            public void deRegisterMessage(String id) {
424:                MessageRegistry reg = JMSBindingContext.getInstance()
425:                        .getMessageRegistry();
426:                reg.deregisterExchange(id);
427:            }
428:
429:            /**
430:             *
431:             */
432:            public void execute() {
433:                mLogger.fine(mStringTranslator.getString(JMS_HANDLER_BASE));
434:
435:                /* do sanity first
436:                 */
437:            }
438:
439:            /**
440:             * 
441:             *
442:             * @param id 
443:             * @param ob 
444:             */
445:            public void registerMessage(String id, Object ob) {
446:                MessageRegistry reg = JMSBindingContext.getInstance()
447:                        .getMessageRegistry();
448:                reg.registerExchange(id, ob);
449:            }
450:
451:            /**
452:             * Method that sends any message exchnage on the channel.
453:             *
454:             * @param msg exchange to be sent
455:             *
456:             * @return true if success else false
457:             */
458:            public boolean send(MessageExchange msg) {
459:                /*
460:                 * Send message mSendMessage
461:                 * register in message registry
462:                 * start timer -1 indicates no timer
463:                 */
464:                DeliveryChannel channel = JMSBindingContext.getInstance()
465:                        .getChannel();
466:
467:                if (msg == null) {
468:                    mLogger.severe(mStringTranslator
469:                            .getString(JMS_NULL_EXCHANGE));
470:                    setError(getError() + "\n"
471:                            + mStringTranslator.getString(JMS_NULL_EXCHANGE));
472:
473:                    return false;
474:                }
475:
476:                try {
477:                    channel.send(msg);
478:                } catch (MessagingException me) {
479:                    me.printStackTrace();
480:                    setException(me);
481:
482:                    return false;
483:                }
484:
485:                return true;
486:            }
487:
488:            /**
489:             * 
490:             *
491:             * @param msg 
492:             * @param dest 
493:             * @param session 
494:             *
495:             * @return 
496:             */
497:            public boolean send(Message msg, Object dest, MQSession session) {
498:                if (dest == null) {
499:                    mLogger.severe(mStringTranslator
500:                            .getString(JMS_NO_DESTINATION));
501:                    setError(mStringTranslator.getString(JMS_NO_DESTINATION));
502:                    JMSBindingContext.getInstance().getMQManager()
503:                            .releaseSession(session);
504:
505:                    return false;
506:                }
507:                MQDestination destination = null;
508:                destination = JMSBindingContext.getInstance().getMQManager()
509:                        .getDestination(dest);
510:
511:                if (!session.sendMessage(msg, destination)) {
512:                    mLogger.severe(mStringTranslator.getString(JMS_CANNOT_SEND)
513:                            + session.getError());
514:                    setError(mStringTranslator.getString(JMS_CANNOT_SEND)
515:                            + session.getError());
516:                    JMSBindingContext.getInstance().getMQManager()
517:                            .releaseSession(session);
518:
519:                    return false;
520:                }
521:
522:                JMSBindingContext.getInstance().getMQManager().releaseSession(
523:                        session);
524:                destination = null;
525:                return true;
526:            }
527:
528:            /**
529:             * 
530:             *
531:             * @return 
532:             */
533:            public boolean sendJMSMessage() {
534:                return false;
535:            }
536:
537:            /**
538:             * 
539:             *
540:             * @return 
541:             */
542:            public boolean sendNMSMessage() {
543:                return false;
544:            }
545:
546:            /**
547:             *
548:             */
549:            public void sendNMSStatus() {
550:                Exception exp = getException();
551:
552:                try {
553:                    if (exp != null) {
554:                        mLogger.fine("**ERROR STATUS**");
555:                        mExchange.setError(exp);
556:                    } else {
557:                        mLogger.fine("**DONE STATUS** "
558:                                + mExchange.getExchangeId());
559:                        mExchange.setStatus(ExchangeStatus.DONE);
560:                    }
561:
562:                    send(mExchange);
563:                }
564:
565:                catch (Exception e) {
566:                    mLogger.severe(mStringTranslator.getString(
567:                            JMS_CANNOT_SEND_STATUS, mExchange.getExchangeId()));
568:                }
569:            }
570:
571:            /**
572:             *
573:             */
574:            private void setServiceEndpoint() {
575:                /**
576:                 * Always try to get an endpoint only before sending this gives the
577:                 * maximum probability of finding an endpoint, also we give an engine
578:                 * enough time to activate the  endpoint
579:                 */
580:                try {
581:                    DeliveryChannel chnl = JMSBindingContext.getInstance()
582:                            .getChannel();
583:                    QName qname = new QName(mBean
584:                            .getValue(ConfigConstants.SERVICE_NAMESPACE), mBean
585:                            .getValue(ConfigConstants.SERVICENAME));
586:                    QName iname = new QName(mBean
587:                            .getValue(ConfigConstants.INTERFACE_NAMESPACE),
588:                            mBean.getValue(ConfigConstants.INTERFACE_LOCALNAME));
589:                    ServiceEndpoint[] ref = JMSBindingContext.getInstance()
590:                            .getContext().getEndpointsForService(qname);
591:                    ServiceEndpoint tmp = null;
592:
593:                    if ((ref == null) || (ref.length == 0)) {
594:                        ref = JMSBindingContext.getInstance().getContext()
595:                                .getEndpoints(iname);
596:                    }
597:
598:                    if ((ref == null) || (ref.length == 0)) {
599:                        throw new Exception("Cannot locate endpoint " + qname);
600:                    } else {
601:                        tmp = ref[0];
602:
603:                        for (int k = 0; k < ref.length; k++) {
604:                            if (ref[k]
605:                                    .getEndpointName()
606:                                    .trim()
607:                                    .equals(
608:                                            mBean
609:                                                    .getValue(ConfigConstants.ENDPOINTNAME))) {
610:                                tmp = ref[k];
611:                            }
612:                        }
613:                    }
614:
615:                    mBean.setServiceEndpoint(tmp);
616:                } catch (Exception me) {
617:                    me.printStackTrace();
618:                }
619:            }
620:        }
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