Tuesday, February 7, 2017

How to monitor the Replication Queues through Java - Adobe CQ5/AEM

Monitoring the Replication Queues through Java - Adobe CQ5/AEM

This post will explain the approach to monitor the Replication Queues through java

Enable the Remote JMX in the server:

Add the following configurations as part of CQ_JVM_OPTS in AEM startup file (start.sh or start.bat)

-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.port=50055

e.g.

CQ_JVM_OPTS='-server -Xmx6144m -XX:MaxPermSize=512M -Djava.awt.headless=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.port=50055'

Restart the server.

Configuration.txt

ServerHost=xxxxxxxxxxx
ServerPort=50055
QueueNames=publish,publish_Dev
Environment=Development
EmailHost=xxxxxx
Email_To=xxxxxx
Email_From=xxxxxxx
QueueThreshold=15

GetReplicationQueueStatus.java

import java.io.*;
import java.util.*;
import javax.management.*;
import javax.management.remote.*;
import javax.mail.*;
import javax.mail.internet.*;

public class GetReplicationQueueStatus {
static JMXConnector m_connector=null;
public static void main(String[] args) {
FileInputStream in=null;
try
{
Properties configuration = new Properties();
in= new FileInputStream("Configuration.txt");
configuration.load(in);
String serverHost=configuration.getProperty("ServerHost");
String serverUrl = "service:jmx:rmi:///jndi/rmi://"+serverHost+":"+configuration.getProperty("ServerPort")+"/jmxrmi";
JMXServiceURL serviceURL = new JMXServiceURL(serverUrl);
m_connector =JMXConnectorFactory.newJMXConnector(serviceURL,null);
m_connector.connect();
MBeanServerConnection m_connection = m_connector.getMBeanServerConnection();
Set<ObjectName> queryResult =m_connection.queryNames(new ObjectName("com.adobe.granite.replication:type=agent,*"),null);
String queueNames=configuration.getProperty("QueueNames");
List<String> queueNameList = Arrays.asList(queueNames.split(","));
for(ObjectName objectName : queryResult) {
if(queueNameList.contains(objectName.getKeyProperty("id").replaceAll("\"", "")))
{
String  attrNames[] = 
                   { "Enabled",
                     "QueueNumEntries",
                     "QueueBlocked",
                     "QueuePaused"                      
                   };
AttributeList  attrList = m_connection.getAttributes(objectName, attrNames);                
           String isEnabled= ((Object) attrList.get(0)).toString().split("=")[1];
           String queueNumEntries= ((Object) attrList.get(1)).toString().split("=")[1];
           String isQueueBlocked= ((Object) attrList.get(2)).toString().split("=")[1];
           String isQueuePaused= ((Object) attrList.get(3)).toString().split("=")[1];
           System.out.println( "Values: " +isEnabled+" "+ queueNumEntries+" "+isQueueBlocked+" "+ isQueuePaused);
           String to=configuration.getProperty("Email_To");
           String from=configuration.getProperty("Email_From");
           String emailHost=configuration.getProperty("EmailHost");
           String queueThreshold=configuration.getProperty("QueueThreshold");
           String environment=configuration.getProperty("Environment");
           if(!isEnabled.trim().equals("true"))
           {
            String subject=environment+": Replication Queue "+"\""+objectName.getKeyProperty("id").replaceAll("\"", "")+"\""+" is Disabled";
            sendEmail(to,from, subject,subject+"\n"+"Server: "+serverHost,  emailHost);
           }else if(isQueueBlocked.trim().equals("true"))
           {
            String subject=environment+": Replication Queue "+"\""+objectName.getKeyProperty("id").replaceAll("\"", "")+"\""+" is Blocked";
            sendEmail(to,from, subject,subject+"\n"+"Server: "+serverHost,  emailHost);
           }else if(isQueuePaused.trim().equals("true"))
           {
            String subject=environment+": Replication Queue "+"\""+objectName.getKeyProperty("id").replaceAll("\"", "")+"\""+" is Paused";
            sendEmail(to,from, subject,subject+"\n"+"Server: "+serverHost,  emailHost);
           }else if(Integer.parseInt(queueNumEntries.trim())>Integer.parseInt(queueThreshold.trim()))
           {
            String subject=environment+": Replication Queue "+"\""+objectName.getKeyProperty("id").replaceAll("\"", "")+"\""+" is Queued with "+queueNumEntries+" Requests";
            sendEmail(to,from, subject,subject+"\n"+"Server: "+serverHost,  emailHost);
           }
               
}
                
}
}catch(Exception e)
{
e.printStackTrace();
}finally {
try {
if(m_connector!=null)
{
m_connector.close();
}
if(in!=null)
{
in.close();
}
}catch(Exception e)
{
}
}
}
static void sendEmail(String to,String from,String subject,String body,String host)
{
 Properties properties = System.getProperties();
     properties.setProperty("mail.smtp.host", host);
     Session session = Session.getDefaultInstance(properties);

     try {
          MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
           message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
           message.setSubject(subject);         
           message.setText("Hi Team\n\n"+body+"\n\n"+"Regards\nAdmin");
           Transport.send(message);
           System.out.println("Email send successfully...");

     }catch (MessagingException mex) {
        mex.printStackTrace();
     }
}

}

Configure the data in Configuration.txt file accordingly.
Email will be triggered whenever the configured Queue is disabled, blocked, paused or the pending request is more than the configured threshold.

Executable jar file can be generated for the java class and scheduled for continuous monitoring.



1 comment:

  1. It's easier to monitor your server by using special tools, such as Nagios, total network monitor, etc. You will see all information about your server and network.

    ReplyDelete

Contact Form

Name

Email *

Message *