prod/net/jaekl/cfb/analyze/Notifier.java

   1 package net.jaekl.cfb.analyze;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5 import java.util.ArrayList;
   6 import java.util.Properties;
   7
   8 import javax.mail.Message.RecipientType;
   9 import javax.mail.MessagingException;
  10 import javax.mail.Session;
  11 import javax.mail.Transport;
  12 import javax.mail.internet.InternetAddress;
  13 import javax.mail.internet.MimeMessage;
  14
  15 import net.jaekl.cfb.CfbBundle;
  16 import net.jaekl.cfb.Config;
  17
  18 public class Notifier {
  19         private static final String MAIL_SMTP_HOST = "mail.smtp.host";
  20         private static final String TEXT_HTML = "text/html";
  21
  22         CfbBundle m_bundle;
  23         Config m_config;
  24
  25         public Notifier(CfbBundle bundle, Config config) {
  26                 m_bundle = bundle;
  27                 m_config = config;
  28         }
  29
  30         public void sendEmailIfNeeded(PrintWriter pw, HtmlReport report) {
  31                 Delta delta = report.getDelta();
  32                 if ((delta.getNumNew() > 0) || (delta.getNumFixed() > 0)) {
  33                         sendEmail(pw, report);
  34                 }
  35         }
  36
  37         void sendEmail(PrintWriter pw, HtmlReport report) {
  38                 Properties props = System.getProperties();
  39                 props.setProperty(MAIL_SMTP_HOST, m_config.getMailSmtpHost());
  40                 Session sess = Session.getDefaultInstance(props);
  41
  42                 ArrayList<String> recipients = m_config.getNotify();
  43                 if (recipients.size() < 1) {
  44                         return;
  45                 }
  46
  47                 PrintWriter mailWriter = null;
  48
  49                 try {
  50                         MimeMessage msg = new MimeMessage(sess);
  51
  52                         String earlier = report.getDelta().getEarlier().constructVersionText(m_bundle);
  53                         String later   = report.getDelta().getLater().constructVersionText(m_bundle);
  54
  55                         msg.setFrom(new InternetAddress(m_config.getMailFrom()));
  56                         msg.setSubject(m_bundle.get(CfbBundle.CFB_MAIL_SUBJECT, earlier, later));
  57
  58                         for (String recipient : recipients) {
  59                                 msg.addRecipient(RecipientType.TO, new InternetAddress(recipient));
  60                         }
  61
  62                         StringWriter sw = new StringWriter();
  63                         mailWriter = new PrintWriter(sw);
  64                         report.write(mailWriter);
  65                         mailWriter.flush();
  66
  67                         msg.setContent(sw.toString(), TEXT_HTML);
  68                         Transport.send(msg);
  69                 }
  70                 catch (MessagingException exc) {
  71                         StringBuilder toList = new StringBuilder();
  72                         for (String recipient : recipients) {
  73                                 if (toList.length() > 0) {
  74                                         toList.append(", ");
  75                                 }
  76                                 toList.append(recipient);
  77                         }
  78                         pw.println(m_bundle.get(CfbBundle.CANNOT_SEND_MAIL, toList.toString(), exc.toString()));
  79                         exc.printStackTrace(pw);
  80                 }
  81                 finally {
  82                         if (null != mailWriter) {
  83                                 mailWriter.close();
  84                         }
  85                 }
  86         }
  87 }