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AbstractEventDetectorRT.java
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AbstractEventDetectorRT.java
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/**
* Copyright (C) 2016 Infinite Automation Software. All rights reserved.
* @author Terry Packer
*/
package com.serotonin.m2m2.rt.event.detectors;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import com.serotonin.m2m2.Common;
import com.serotonin.m2m2.i18n.TranslatableMessage;
import com.serotonin.m2m2.rt.event.type.EventType;
import com.serotonin.m2m2.util.timeout.TimeoutClient;
import com.serotonin.m2m2.util.timeout.TimeoutTask;
import com.serotonin.m2m2.vo.event.detector.AbstractEventDetectorVO;
import com.serotonin.timer.OneTimeTrigger;
import com.serotonin.timer.Task;
/**
*
* Abstraction for Event Detector Runtimes
* @author Terry Packer
*
*/
public abstract class AbstractEventDetectorRT<T extends AbstractEventDetectorVO<?>> {
protected T vo;
private TimeoutClient quiescentClient;
private Task quiescentTask;
private final long quiescentMillis;
private boolean quiescentState;
private Map<String, Object> quiescentContext;
public AbstractEventDetectorRT(T vo){
this.vo = vo;
quiescentMillis = Common.getMillis(vo.getQuiescentPeriodType(), vo.getQuiescentPeriods());
quiescentClient = new TimeoutClient() {
@Override
public void scheduleTimeout(long fireTime) {
wakeup();
}
@Override
public String getTaskId() {
//XIDs unique as of 3.3
return "EDQ-" + vo.getXid();
}
@Override
public String getThreadName() {
return vo.getXid() + " Quiescence";
}
};
}
public T getVO(){
return vo;
}
protected void raiseEvent(long time, Map<String, Object> context) {
if(quiescentMillis != 0 && quiescentTask != null) {
synchronized(this) { //get the lock and check
if(quiescentTask != null) {
quiescentState = true;
quiescentContext = context;
return;
}
}
}
TranslatableMessage msg;
if (!StringUtils.isBlank(vo.getName()))
msg = new TranslatableMessage("common.default", vo.getName());
else
msg = getMessage();
Common.eventManager.raiseEvent(getEventType(), time, vo.isRtnApplicable(), vo.getAlarmLevel(), msg, context);
}
protected void returnToNormal(long time) {
quiescentState = false;
Common.eventManager.returnToNormal(getEventType(), time, vo.getAlarmLevel());
if(quiescentMillis != 0) {
synchronized(this) {
if(quiescentTask != null)
quiescentTask.cancel();
quiescentTask = new TimeoutTask(new OneTimeTrigger(quiescentMillis), quiescentClient);
}
}
}
private void wakeup() {
boolean state;
Map<String, Object> context;
synchronized(this) {
state = quiescentState;
context = quiescentContext;
quiescentState = false;
quiescentContext = null;
quiescentTask = null;
}
if(state) {
raiseEvent(Common.timer.currentTimeMillis(), context);
}
}
protected abstract EventType getEventType();
abstract protected TranslatableMessage getMessage();
}