src/java/org/mxchange/jmailee/model/delivery/JobsEmailDeliveryMessageBean.java

   1 /*
   2  * Copyright (C) 2016 Roland Haeder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.jmailee.model.delivery;
  18
  19 import java.io.Serializable;
  20 import java.text.MessageFormat;
  21 import javax.ejb.ActivationConfigProperty;
  22 import javax.ejb.MessageDriven;
  23 import javax.jms.JMSException;
  24 import javax.jms.Message;
  25 import javax.jms.MessageListener;
  26 import javax.jms.ObjectMessage;
  27 import javax.naming.Context;
  28 import javax.naming.InitialContext;
  29 import javax.naming.NamingException;
  30 import org.mxchange.jcoreeelogger.beans.local.logger.Log;
  31 import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
  32
  33 /**
  34  * A message queue for sending out emails
  35  * <p>
  36  * @author Roland Haeder<roland@mxchange.org>
  37  */
  38 @MessageDriven (
  39                 name = "jjobsEmail",
  40                 description = "A message bean for email delivery",
  41                 activationConfig = {
  42                         @ActivationConfigProperty (propertyName = "destinationLookup", propertyValue = "jms/jjobs-email-queue"),
  43                         @ActivationConfigProperty (propertyName = "destinationType", propertyValue = "javax.jms.Queue")
  44                 })
  45 public class JobsEmailDeliveryMessageBean implements MessageListener {
  46
  47         /**
  48          * Logger bean
  49          */
  50         @Log
  51         private LoggerBeanLocal loggerBeanLocal;
  52
  53         /**
  54          * Default constructor
  55          */
  56         public JobsEmailDeliveryMessageBean () {
  57                 try {
  58                         // Get initial context
  59                         Context context = new InitialContext();
  60
  61                         // Lookup logger
  62                         this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
  63                 } catch (final NamingException ex) {
  64                         // Continue to throw
  65                         throw new RuntimeException(MessageFormat.format("context.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
  66                 }
  67         }
  68
  69         @Override
  70         public void onMessage (final Message message) {
  71                 // Trace message
  72                 this.loggerBeanLocal.logTrace(MessageFormat.format("onMessage: message={0} - CALLED!", message)); //NOI18N
  73
  74                 // Is the message castable to ObjectMessage?
  75                 if (null == message) {
  76                         // message is null
  77                         throw new NullPointerException("message is null"); //NOI18N
  78                 } else if (!(message instanceof ObjectMessage)) {
  79                         // Not castable
  80                         throw new ClassCastException(MessageFormat.format("message cannot be casted to ObjectMessage: {0}", message)); //NOI18N
  81                 }
  82
  83                 // Securely cast it
  84                 ObjectMessage objectMessage = (ObjectMessage) message;
  85
  86                 // Init instance
  87                 Serializable object;
  88
  89                 try {
  90                         // Get object from it
  91                         object = objectMessage.getObject();
  92                 } catch (final JMSException ex) {
  93                         // Log exception ...
  94                         this.loggerBeanLocal.logException(ex);
  95
  96                         // ... and don't continue
  97                         return;
  98                 }
  99
 100                 // Debug message
 101                 this.loggerBeanLocal.logDebug(MessageFormat.format("onMessage: object={0}", object)); //NOI18N
 102
 103                 // Does this object implement WrapableCheckout ?
 104                 if (null == object) {
 105                         // object cannot be null
 106                         throw new NullPointerException("object is null"); //NOI18N
 107                 } else if (!(object instanceof WrapableEmailDelivery)) {
 108                         // Not proper interface used
 109                         throw new ClassCastException(MessageFormat.format("object does not implement WrapableEmailDelivery: {0}", object)); //NOI18N
 110                 }
 111
 112                 // Cast the object to the wrapper interface
 113                 WrapableEmailDelivery emailDelivery = (WrapableEmailDelivery) object;
 114
 115                 // Trace message
 116                 this.loggerBeanLocal.logTrace("onMessage: EXIT!"); //NOI18N
 117         }
 118
 119 }