/*
* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.wso2.carbon.registry.eventing;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.description.Parameter;
import org.apache.axis2.transport.mail.MailConstants;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.registry.core.exceptions.RegistryException;
import org.wso2.carbon.registry.core.session.UserRegistry;
import org.wso2.carbon.registry.event.core.Message;
import org.wso2.carbon.registry.eventing.events.DispatchEvent;
import org.wso2.carbon.registry.eventing.internal.EventingDataHolder;
import org.wso2.carbon.registry.eventing.template.NotificationTemplate;
import javax.mail.*;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
public class MimeEmailMessageHandler {
public static final int MIN_THREAD = 8;
public static final int MAX_THREAD = 100;
public static final String MIN_THREAD_NAME = "minThread";
public static final String MAX_THREAD_NAME = "maxThread";
public static final String DEFAULT_KEEP_ALIVE_TIME_NAME = "defaultKeepAliveTime";
public static final long DEFAULT_KEEP_ALIVE_TIME = 20;
private static final Log log = LogFactory.getLog(MimeEmailMessageHandler.class);
private static Session session;
private static ThreadPoolExecutor threadPoolExecutor;
private InternetAddress smtpFromAddress = null;
/**
*
* @param configContext ConfigurationContext
* @param message Mail body
* @param subject Mail Subject
* @param toAddress email to address
* @throws RegistryException Registry exception
*/
public void sendMimeMessage(ConfigurationContext configContext, String message, String subject, String toAddress) throws RegistryException {
Properties props = new Properties();
if (configContext != null && configContext.getAxisConfiguration().getTransportOut("mailto") != null) {
List<Parameter> params = configContext.getAxisConfiguration().getTransportOut("mailto").getParameters();
for (Parameter parm: params) {
props.put(parm.getName(), parm.getValue());
}
}
if (threadPoolExecutor == null) {
threadPoolExecutor = new ThreadPoolExecutor(MIN_THREAD, MAX_THREAD, DEFAULT_KEEP_ALIVE_TIME, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>(1000));
}
String smtpFrom = props.getProperty(MailConstants.MAIL_SMTP_FROM);
try {
smtpFromAddress = new InternetAddress(smtpFrom);
} catch (AddressException e) {
log.error("Error in retrieving smtp address");
throw new RegistryException("Error in transforming smtp address");
}
final String smtpUsername = props.getProperty(MailConstants.MAIL_SMTP_USERNAME);
final String smtpPassword = props.getProperty(MailConstants.MAIL_SMTP_PASSWORD);
if (smtpUsername != null && smtpPassword != null) {
MimeEmailMessageHandler.session = Session.getInstance(props, new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(smtpUsername, smtpPassword);
}
});
} else {
MimeEmailMessageHandler.session = Session.getInstance(props);
}
threadPoolExecutor.submit(new EmailSender(toAddress, subject, message.toString(), "text/html"));
}
/**
*
* @param message Message Object
* @param path Registry path
* @param event Event name
* @return Mail Subject
*/
public String getEmailSubject(Message message, String path,String event){
String mailHeader = message.getProperty(MailConstants.MAIL_HEADER_SUBJECT);
if (mailHeader == null && (path == null || path.length() == 0)) {
mailHeader = "[" + event + "]";
} else if (mailHeader == null) {
mailHeader ="[" + event + "] at path: " + path;
}
return mailHeader;
}
public String getEmailMessage(Message message, int tenantId){
String emailMessage = null;
DispatchEvent event = (DispatchEvent) message;
String eventType = event.getEvent().getClass().getSimpleName();
String resourcePath = event.getEvent().getOperationDetails().getPath();
if (EventingDataHolder.getInstance().getRegistryService() != null) {
try {
UserRegistry registry = EventingDataHolder.getInstance().getRegistryService().getConfigSystemRegistry(tenantId);
String mesageContent = event.getEvent().getMessage().toString();
String className = EventingDataHolder.getInstance().getNotificationConfig().getConfigurationClass();
Class clazz = Class.forName(className);
Object instance = clazz.newInstance();
if (instance instanceof NotificationTemplate){
NotificationTemplate template = (NotificationTemplate) instance;
emailMessage = template.populateEmailMessage(registry,resourcePath,mesageContent,eventType);
}
} catch (InstantiationException e) {
log.warn("Error while instantiating template");
} catch (IllegalAccessException e) {
log.warn("Error while instantiating template");
} catch (ClassNotFoundException e) {
log.warn("Error while instantiating template");
} catch (RegistryException e) {
log.warn("Error while instantiating template");
}
}
return emailMessage;
}
class EmailSender implements Runnable {
String to;
String subject;
String body;
String type;
EmailSender(String to, String subject, String body, String type) {
this.to = to;
this.subject = subject;
this.body = body;
this.type = type;
}
/**
* Sending emails to the corresponding Email IDs'.
*/
@Override
public void run() {
if (log.isDebugEnabled()) {
log.debug("Format of the email:" + " " + to + "->" + type);
}
//Creating MIME object using initiated session.
MimeMessage message = new MimeMessage(session);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append(body);
String finalString = stringBuilder.toString();
//Setting up the Email attributes and Email payload.
try {
message.setFrom(smtpFromAddress);
message.addRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(to));
message.setSubject(subject);
message.setSentDate(new Date());
message.setContent(finalString, type);
if (log.isDebugEnabled()) {
log.debug("Meta data of the email configured successfully");
}
Transport.send(message);
if (log.isDebugEnabled()) {
log.debug("Mail sent to the EmailID" + " " + to + " " + "Successfully");
}
} catch (MessagingException e) {
log.error("Error in sending the Email : " + smtpFromAddress.toString() + "::" +e.getMessage(), e);
}
}
}
}