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/*******************************************************************************
* Copyright (c) 2018, TechEmpower, Inc.
* All rights reserved.
*
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package com.techempower.scheduler;
import com.techempower.thread.*;
import com.techempower.util.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Used by the Scheduler to run events on their own thread, if the event
* requests that it be run separate from the Scheduler itself.
*
* Note: This thread will have its priority automatically set to
* minimum priority. It is assumed that events can run at low priority.
*
* @see Scheduler
*/
public class EventRunnerThread
extends EndableThread
{
//
// Static variables.
//
private static final ThreadLocal CURRENT_THREAD = new ThreadLocal<>();
//
// Member variables.
//
private final Logger log = LoggerFactory.getLogger(getClass());
private final ScheduledEvent event;
private final Scheduler scheduler;
private final boolean onDemandExecution;
/**
* Constructor.
*
* @param event the event being launched.
* @param scheduler the scheduler launching the event.
* @param onDemandExecution True if this is an on-demand (admin-initiated);
* false if it's a scheduled execution.
*/
public EventRunnerThread(ScheduledEvent event, Scheduler scheduler,
boolean onDemandExecution)
{
super("Event Runner (" + event.getName() + ")");
setPriority(MIN_PRIORITY);
this.event = event;
this.scheduler = scheduler;
this.onDemandExecution = onDemandExecution;
}
/**
* Standard run method.
*/
@Override
public void run()
{
setStartTime();
final Chronograph chrono = new Chronograph();
CURRENT_THREAD.set(this);
try
{
event.execute(scheduler, onDemandExecution);
}
catch (Exception exc)
{
log.error("Exception while executing (new thread) {}", event, exc);
}
catch (Error error)
{
log.error("Error while executing (new thread) {}", event, error);
}
finally
{
event.setExecuting(false);
log.info("{} complete. {}", event.getName(), chrono);
}
}
/**
* Gets the EventRunnerThread for the current Event runner thread.
*/
public static EventRunnerThread getCurrentThread()
{
return CURRENT_THREAD.get();
}
} // End EventRunnerThread.