1 /**
2 * This file Copyright (c) 2003-2012 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.module.mail.handlers;
35
36 import info.magnolia.module.mail.templates.MgnlEmail;
37
38 import java.util.ArrayList;
39 import java.util.Arrays;
40
41 import javax.mail.Transport;
42
43 import org.slf4j.Logger;
44 import org.slf4j.LoggerFactory;
45
46 /**
47 * This class is meant to allow async emails. The mail is posted and send. Note that mail success or failure is only
48 * displayed in the logs.
49 */
50 public class ThreadedMailHandler implements MgnlMailHandler {
51
52 Logger log = LoggerFactory.getLogger(ThreadedMailHandler.class);
53
54 ArrayList<MgnlEmail> emails = new ArrayList<MgnlEmail>();
55
56 MailThread thread; // can be replaced with a pool of thread someday
57
58 private ThreadedMailHandler() {
59 this.thread = new MailThread();
60 Thread bb = new Thread(this.thread);
61 bb.start();
62 }
63
64 @Override
65 protected void finalize() throws Throwable {
66 this.thread.setStop(true);
67 super.finalize();
68 }
69
70 /**
71 * Prepare the email (format it) and send it.
72 *
73 * @param email the email to send
74 * @throws Exception if fails
75 */
76 @Override
77 public void prepareAndSendMail(MgnlEmail email) throws Exception {
78 email.setBodyNotSetFlag(true);
79 synchronized (this) {
80 this.emails.add(email);
81 }
82 this.thread.notify();
83 }
84
85 /**
86 * Send the email as is, without touching it.
87 *
88 * @param email the email to send
89 * @throws Exception if fails
90 */
91 @Override
92 public void sendMail(MgnlEmail email) throws Exception {
93 synchronized (this) {
94 this.emails.add(email);
95 }
96 this.thread.notify();
97 }
98
99 /**
100 * Thread doing all the job for sending emails and formatting the body.
101 */
102 class MailThread implements Runnable {
103
104 boolean stop = false;
105
106 @Override
107 public void run() {
108 while (!this.stop) {
109 if (ThreadedMailHandler.this.emails.size() == 0) { // nothing to do just sleep
110 synchronized (this) {
111 try {
112 wait();
113 } catch (InterruptedException e) {
114 ThreadedMailHandler.this.log.info("Mail Thread was interrupted");
115 }
116 }
117 }
118 else {
119 MgnlEmail email = null;
120 synchronized (this) {
121 if (ThreadedMailHandler.this.emails.size() > 0) {
122 email = ThreadedMailHandler.this.emails.remove(0);
123 }
124 }
125 if (email != null) {
126 try {
127 if (email.isBodyNotSetFlag()) {
128 // email.setBody();
129 }
130 try {
131 Transport.send(email);
132 ThreadedMailHandler.this.log.info("Mail has been sent to: ["
133 + Arrays.asList(email.getAllRecipients())
134 + "]");
135 } catch (Exception e) {
136 ThreadedMailHandler.this.log.error("Email to: ["
137 + Arrays.asList(email.getAllRecipients())
138 + "] was not sent because of an error", e);
139 }
140 } catch (Exception e) {
141 log.error("{}", e);
142 }
143 }
144 }
145
146 }
147 }
148
149 public boolean isStop() {
150 return this.stop;
151 }
152
153 public void setStop(boolean stop) {
154 this.stop = stop;
155 this.notify();
156 }
157 }
158 }