Adding simple Axis2 Listener/Observer to monitor services

To monitor  hosted service statuses, register a listener in the axis2.xml.  The listener should implement  the "AxisObserver". Currently four statuses can be monitored ;

• Services
• Start
• Stop
• Deploy
• Undeploy
• Modules
• Engage
• Disengage
• Deploy
• Undeploy

Eg:

package org.test.axisobserver;
import java.util.ArrayList;

import org.apache.axiom.om.OMElement;

import org.apache.axis2.AxisFault;

import org.apache.axis2.description.AxisModule;

import org.apache.axis2.description.AxisService;

import org.apache.axis2.description.AxisServiceGroup;

import org.apache.axis2.description.Parameter;

import org.apache.axis2.engine.AxisConfiguration;

import org.apache.axis2.engine.AxisEvent;

import org.apache.axis2.engine.AxisObserver;

/**

 * Axis observer to get notification of service activate/deactiavte/deploy/undeploy operations

 *

 */

public class ServiceMonitorObserver implements AxisObserver {

    public void init(AxisConfiguration arg0) {

}

     public void serviceUpdate(AxisEvent event, AxisService axisService) {

//if service is activated 

if(AxisEvent.SERVICE_START == event.getEventType()){

//do your stuff

}

      //if service is deployed

       if(AxisEvent.SERVICE_DEPLOY == event.getEventType()){

//do your stuff

}

}

public void addParameter(Parameter arg0) throws AxisFault {

}

public void deserializeParameters(OMElement arg0) throws AxisFault {

}

public Parameter getParameter(String arg0) {

return null;

}

public ArrayList getParameters() {

return null;

}

public boolean isParameterLocked(String arg0) {

return false;

}

public void removeParameter(Parameter arg0) throws AxisFault {

}

public void moduleUpdate(AxisEvent arg0, AxisModule arg1) {

}

public void serviceGroupUpdate(AxisEvent arg0, AxisServiceGroup arg1) {

}

}

The above listener can be registered in the axis2 configuration (axis2.xml) as follows;

 <listener class="org.test.axisobserver.ServiceMonitorObserver"/>