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 java.util.Properties;
  22 import java.util.ResourceBundle;
  23 import javax.annotation.PostConstruct;
  24 import javax.ejb.ActivationConfigProperty;
  25 import javax.ejb.MessageDriven;
  26 import javax.jms.JMSException;
  27 import javax.jms.Message;
  28 import javax.jms.MessageListener;
  29 import javax.jms.ObjectMessage;
  30 import org.mxchange.jjobs.database.BaseJobsDatabaseBean;
  31 import org.mxchange.jjobsmailer.model.delivery.DeliverableJobsEmail;
  32 import org.mxchange.jjobsmailer.model.delivery.JobsMailer;
  33
  34 /**
  35  * A message queue for sending out emails
  36  * <p>
  37  * @author Roland Haeder<roland@mxchange.org>
  38  */
  39 @MessageDriven (
  40                 name = "jjobsEmail",
  41                 description = "A message bean for email delivery",
  42                 activationConfig = {
  43                         @ActivationConfigProperty (propertyName = "destinationLookup", propertyValue = "jms/jjobs-email-queue"),
  44                         @ActivationConfigProperty (propertyName = "destinationType", propertyValue = "javax.jms.Queue")
  45                 })
  46 public class JobsEmailDeliveryMessageBean extends BaseJobsDatabaseBean implements MessageListener {
  47
  48         /**
  49          * Serial number
  50          */
  51         private static final long serialVersionUID = 75_638_176_619_024L;
  52
  53         /**
  54          * Mailer instance
  55          */
  56         private final DeliverableJobsEmail mailer;
  57
  58         /**
  59          * Configuration file
  60          */
  61         private final String configFile = "org.mxchange.jmailer.config"; //NOI18N
  62
  63         /**
  64          * Default constructor
  65          */
  66         public JobsEmailDeliveryMessageBean () {
  67                 // Init mailer instance
  68                 this.mailer = new JobsMailer();
  69         }
  70
  71         @Override
  72         public void onMessage (final Message message) {
  73                 // Trace message
  74                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("onMessage: message={0} - CALLED!", message)); //NOI18N
  75                 // The parameter should be valid
  76                 if (null == message) {
  77                         // Throw NPE
  78                         throw new NullPointerException("message is null"); //NOI18N
  79                 } else if (!(message instanceof ObjectMessage)) {
  80                         // Not implementing right interface
  81                         throw new IllegalArgumentException(MessageFormat.format("message={0} does not implemented ObjectMessage", message)); //NOI18N
  82                 }
  83
  84                 // Securely cast it
  85                 ObjectMessage objectMessage = (ObjectMessage) message;
  86
  87                 // Init variable
  88                 Serializable serializable;
  89
  90                 try {
  91                         // Get object from message
  92                         serializable = objectMessage.getObject();
  93                 } catch (final JMSException ex) {
  94                         // Log it and don't continue any further
  95                         this.getLoggerBeanLocal().logException(ex);
  96                         return;
  97                 }
  98
  99                 // Debug message
 100                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("onMessage: serializable={0}", serializable)); //NOI18N
 101
 102                 // Trace message
 103                 this.getLoggerBeanLocal().logTrace("onMessage - EXIT!"); //NOI18N
 104         }
 105
 106         /**
 107          * Post-construction
 108          */
 109         @PostConstruct
 110         public void init () {
 111                 // Trace message
 112                 this.getLoggerBeanLocal().logTrace("init: CALLED!"); //NOI18N
 113
 114                 // Try to load bundle
 115                 ResourceBundle bundle = ResourceBundle.getBundle(this.configFile);
 116
 117                 // Debug message
 118                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("init: bundle={0}", bundle)); //NOI18N
 119
 120                 // The bunble should be valid
 121                 if (null == bundle) {
 122                         // Throw NPE
 123                         throw new NullPointerException(MessageFormat.format("bundle is null, maybe file {0} does not exist?", this.configFile)); //NOI18N
 124                 }
 125
 126                 // Init Properties
 127                 Properties properties = new Properties();
 128
 129                 // Is the bundle not empty?
 130                 if (!bundle.keySet().isEmpty()) {
 131                         // Loop through all
 132                         for (final String key : bundle.keySet()) {
 133                                 // Log debug message
 134                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("init: key={0}", key)); //NOI18N
 135
 136                                 // Get string from bundle and set it in properties
 137                                 properties.put(key, bundle.getString(key));
 138                         }
 139                 }
 140
 141                 // Handle it over to the mailer
 142                 this.mailer.init(properties);
 143
 144                 // Trace message
 145                 this.getLoggerBeanLocal().logTrace("init: EXIT!"); //NOI18N
 146         }
 147 }