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

   1 /*
   2  * Copyright (C) 2016 Cho-Time GmbH
   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<rhaeder@cho-time.de>
  37  */
  38 @MessageDriven (
  39                 name = "rateCalcEmail",
  40                 description = "A message bean for email delivery",
  41                 activationConfig = {
  42                         @ActivationConfigProperty (propertyName = "destinationLookup", propertyValue = "jms/jratecalc-email-queue"),
  43                         @ActivationConfigProperty (propertyName = "destinationType", propertyValue = "javax.jms.Queue")
  44                 }
  45 )
  46 public class RateCalcEmailDeliveryMessageBean implements MessageListener {
  47
  48         /**
  49          * Logger bean
  50          */
  51         @Log
  52         private LoggerBeanLocal loggerBeanLocal;
  53
  54         /**
  55          * Default constructor
  56          */
  57         public RateCalcEmailDeliveryMessageBean () {
  58                 try {
  59                         // Get initial context
  60                         Context context = new InitialContext();
  61
  62                         // Lookup logger
  63                         this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
  64                 } catch (final NamingException ex) {
  65                         // Continue to throw
  66                         throw new RuntimeException(MessageFormat.format("context.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
  67                 }
  68         }
  69
  70         @Override
  71         public void onMessage (final Message message) {
  72                 // Trace message
  73                 this.loggerBeanLocal.logTrace(MessageFormat.format("onMessage: message={0} - CALLED!", message)); //NOI18N
  74
  75                 // Is the message castable to ObjectMessage?
  76                 if (null == message) {
  77                         // message is null
  78                         throw new NullPointerException("message is null"); //NOI18N
  79                 } else if (!(message instanceof ObjectMessage)) {
  80                         // Not castable
  81                         throw new ClassCastException(MessageFormat.format("message cannot be casted to ObjectMessage: {0}", message)); //NOI18N
  82                 }
  83
  84                 // Securely cast it
  85                 ObjectMessage objectMessage = (ObjectMessage) message;
  86
  87                 // Init instance
  88                 Serializable object;
  89
  90                 try {
  91                         // Get object from it
  92                         object = objectMessage.getObject();
  93                 } catch (final JMSException ex) {
  94                         // Log exception ...
  95                         this.loggerBeanLocal.logException(ex);
  96
  97                         // ... and don't continue
  98                         return;
  99                 }
 100
 101                 // Debug message
 102                 this.loggerBeanLocal.logDebug(MessageFormat.format("onMessage: object={0}", object)); //NOI18N
 103
 104                 // Does this object implement WrapableCheckout ?
 105                 if (null == object) {
 106                         // object cannot be null
 107                         throw new NullPointerException("object is null"); //NOI18N
 108                 } else if (!(object instanceof WrapableEmailDelivery)) {
 109                         // Not proper interface used
 110                         throw new ClassCastException(MessageFormat.format("object does not implement WrapableEmailDelivery: {0}", object)); //NOI18N
 111                 }
 112
 113                 // Cast the object to the wrapper interface
 114                 WrapableEmailDelivery emailDelivery = (WrapableEmailDelivery) object;
 115
 116                 // Trace message
 117                 this.loggerBeanLocal.logTrace("onMessage: EXIT!"); //NOI18N
 118         }
 119
 120 }