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

   1 /*
   2  * Copyright (C) 2016 quix0r
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (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 General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU 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.Date;
  22 import javax.annotation.Resource;
  23 import javax.ejb.ActivationConfigProperty;
  24 import javax.ejb.MessageDriven;
  25 import javax.jms.JMSException;
  26 import javax.jms.Message;
  27 import javax.jms.MessageListener;
  28 import javax.jms.ObjectMessage;
  29 import javax.mail.MessagingException;
  30 import javax.mail.Session;
  31 import javax.mail.Transport;
  32 import javax.mail.internet.InternetAddress;
  33 import javax.mail.internet.MimeMessage;
  34 import javax.naming.Context;
  35 import javax.naming.InitialContext;
  36 import javax.naming.NamingException;
  37 import org.mxchange.jcoreeelogger.beans.local.logger.Log;
  38 import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
  39
  40 /**
  41  * A message queue for sending out emails
  42  * <p>
  43  * @author Roland Haeder<roland@mxchange.org>
  44  */
  45 @MessageDriven (activationConfig = {
  46         @ActivationConfigProperty (propertyName = "destinationLookup", propertyValue = "jms/jjobs-email-queue"),
  47         @ActivationConfigProperty (propertyName = "destinationType", propertyValue = "javax.jms.Queue")
  48 })
  49 public class JobsEmailDeliveryMessageBean implements MessageListener {
  50
  51         /**
  52          * Email session
  53          */
  54         @Resource (name = "jmail/jjobs")
  55         private Session jmailjjobs;
  56
  57         /**
  58          * Logger bean
  59          */
  60         @Log
  61         private LoggerBeanLocal loggerBeanLocal;
  62
  63         /**
  64          * Default constructor
  65          */
  66         public JobsEmailDeliveryMessageBean () {
  67                 try {
  68                         // Get initial context
  69                         Context context = new InitialContext();
  70
  71                         // Lookup logger
  72                         this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
  73                 } catch (final NamingException ex) {
  74                         // Continue to throw
  75                         throw new RuntimeException("context.lookup() failed.", ex); //NOI18N
  76                 }
  77         }
  78
  79         @Override
  80         public void onMessage (final Message message) {
  81                 // Trace message
  82                 this.loggerBeanLocal.logTrace(MessageFormat.format("onMessage: message={0} - CALLED!", message)); //NOI18N
  83
  84                 // Is the message castable to ObjectMessage?
  85                 if (null == message) {
  86                         // message is null
  87                         throw new NullPointerException("message is null"); //NOI18N
  88                 } else if (!(message instanceof ObjectMessage)) {
  89                         // Not castable
  90                         throw new ClassCastException(MessageFormat.format("message cannot be casted to ObjectMessage: {0}", message)); //NOI18N
  91                 }
  92
  93                 // Securely cast it
  94                 ObjectMessage objectMessage = (ObjectMessage) message;
  95
  96                 // Init instance
  97                 Serializable object;
  98
  99                 try {
 100                         // Get object from it
 101                         object = objectMessage.getObject();
 102                 } catch (final JMSException ex) {
 103                         // Log exception ...
 104                         this.loggerBeanLocal.logException(ex);
 105
 106                         // ... and don't continue
 107                         return;
 108                 }
 109
 110                 // Debug message
 111                 this.loggerBeanLocal.logDebug(MessageFormat.format("onMessage: object={0}", object)); //NOI18N
 112
 113                 // Does this object implement WrapableCheckout ?
 114                 if (null == object) {
 115                         // object cannot be null
 116                         throw new NullPointerException("object is null"); //NOI18N
 117                 } else if (!(object instanceof WrapableEmailDelivery)) {
 118                         // Not proper interface used
 119                         throw new ClassCastException(MessageFormat.format("object does not implement WrapableEmailDelivery: {0}", object)); //NOI18N
 120                 }
 121
 122                 // Cast the object to the wrapper interface
 123                 WrapableEmailDelivery emailDelivery = (WrapableEmailDelivery) object;
 124
 125                 // Trace message
 126                 this.loggerBeanLocal.logTrace("onMessage: EXIT!"); //NOI18N
 127         }
 128
 129         /**
 130          * Sends an email to given email address with subject line.
 131          * <p>
 132          * @param emailAddress Email address for recipient
 133          * @param subjectLine  Subject line
 134          * @param body         Body part
 135          * <p>
 136          * @throws NamingException    If the resource cannot be found
 137          * @throws MessagingException If something happened on message delivery
 138          */
 139         private void sendMail (final String emailAddress, final String subjectLine, final String body) throws NamingException, MessagingException {
 140                 // Get MIME message instance
 141                 MimeMessage message = new MimeMessage(this.jmailjjobs);
 142
 143                 // Set subject, recipients and body
 144                 message.setSubject(subjectLine);
 145                 message.setRecipients(javax.mail.Message.RecipientType.TO, InternetAddress.parse(emailAddress, true));
 146                 message.setSentDate(new Date());
 147                 message.setText(body);
 148
 149                 // Directly send email
 150                 Transport.send(message);
 151         }
 152
 153 }