/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.example.qos_sla.monitor;
import com.espertech.esper.client.*;
import com.espertech.esper.example.qos_sla.eventbean.OperationMeasurement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SpikeAndErrorMonitor {
private SpikeAndErrorMonitor() {
}
public static void start() {
EPAdministrator admin = EPServiceProviderManager.getDefaultProvider().getEPAdministrator();
String eventName = OperationMeasurement.class.getName();
EPStatement myPattern = admin.createPattern(
"every spike=" + eventName + "(latency>20000) or every error=" + eventName + "(success=false)");
myPattern.addListener(new UpdateListener() {
public void update(EventBean[] newEvents, EventBean[] oldEvents) {
OperationMeasurement spike = (OperationMeasurement) newEvents[0].get("spike");
OperationMeasurement error = (OperationMeasurement) newEvents[0].get("error");
if (spike != null) {
log.debug(".update spike=" + spike.toString());
}
if (error != null) {
log.debug(".update error=" + error.toString());
}
}
});
}
private static final Logger log = LoggerFactory.getLogger(SpikeAndErrorMonitor.class);
}