/*
* 2012-3 Red Hat Inc. and/or its affiliates and other contributors.
*
* Licensed 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.overlord.rtgov.tests.platforms.jbossas.customevent.monitor;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.enterprise.context.ApplicationScoped;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.overlord.rtgov.active.collection.ActiveCollectionManager;
import org.overlord.rtgov.active.collection.ActiveCollectionManagerAccessor;
import org.overlord.rtgov.active.collection.ActiveList;
import org.overlord.rtgov.epn.EPNManager;
import org.overlord.rtgov.epn.EPNManagerAccessor;
import org.overlord.rtgov.epn.EventList;
import org.overlord.rtgov.epn.NotificationListener;
import org.overlord.rtgov.tests.platforms.jbossas.customevent.data.CustomActivityEvent;
/**
* This is the custom event monitor that receives node notifications
* from the EPN, and makes the events available via a REST API.
*
*/
@Path("/monitor")
@ApplicationScoped
public class CustomEventMonitor implements NotificationListener {
private static final String ACS_NAME = "CustomEventsResults";
private static final String CUSTOM_EVENTS_PROCESSED_SUBJECT = "CustomEventsProcessed";
private static final String CUSTOM_EVENTS_RESULTS_SUBJECT = "CustomEventsResults";
private static final Logger LOG=Logger.getLogger(CustomEventMonitor.class.getName());
private EPNManager _epnManager=null;
private ActiveCollectionManager _activeCollectionManager;
private java.util.List<CustomActivityEvent> _customEvents=
new java.util.ArrayList<CustomActivityEvent>();
private ActiveList _customEventsACS=null;
/**
* This is the default constructor.
*/
public CustomEventMonitor() {
try {
_epnManager = EPNManagerAccessor.getEPNManager();
_epnManager.addNotificationListener(CUSTOM_EVENTS_PROCESSED_SUBJECT, this);
_epnManager.addNotificationListener(CUSTOM_EVENTS_RESULTS_SUBJECT, this);
_activeCollectionManager = ActiveCollectionManagerAccessor.getActiveCollectionManager();
_customEventsACS = (ActiveList)_activeCollectionManager.getActiveCollection(ACS_NAME);
LOG.info("Custom Active Collection="+_customEventsACS+" Name="+ACS_NAME);
} catch (Exception e) {
LOG.log(Level.SEVERE, "Failed to initialize custom event monitor", e);
}
}
/**
* This method returns the list of custom activity events
* and then resets the list.
*
* @return The custom activity events
*/
@GET
@Path("/events")
@Produces("application/json")
public java.util.List<CustomActivityEvent> getCustomActivityEvents() {
java.util.List<CustomActivityEvent> ret=new java.util.ArrayList<CustomActivityEvent>(_customEvents);
_customEvents.clear();
return (ret);
}
/**
* This method returns the list of custom events from the active collection.
*
* @return The custom events
*/
@GET
@Path("/acsresults")
@Produces("application/json")
public java.util.List<CustomActivityEvent> getACSResults() {
java.util.List<CustomActivityEvent> ret=new java.util.ArrayList<CustomActivityEvent>();
LOG.info("Returning Custom Active Collection results (size="+_customEventsACS.getSize()+") ac="+_customEventsACS);
for (Object obj : _customEventsACS) {
if (obj instanceof CustomActivityEvent) {
ret.add((CustomActivityEvent)obj);
}
}
return (ret);
}
/**
* {@inheritDoc}
*/
public void notify(String subject, EventList events) {
System.out.println(">>> CUSTOM EVENT MONITOR: ("+subject+")");
for (java.io.Serializable event : events) {
System.out.println("\t"+event);
if (event instanceof CustomActivityEvent) {
_customEvents.add((CustomActivityEvent)event);
}
}
}
}