Java Context.getRemainingTimeInMillis方法代碼示例

import com.amazonaws.services.lambda.runtime.Context; //導入方法依賴的package包/類
/**
 * {@inheritDoc}
 * @since 2017/12/20
 */
@Override
public void run()
{
	_LOGGER.debug("Started watchdog thread.");
	
	Context context = this.context;
	AtomicBoolean finished = this._finished;
	int windowtime = this.windowtime;
	
	for (;;)
	{
		// Sleep to pass the time by because otherwise CPU cycles will
		// just be burnt, but do not sleep for very small values because
		// most OSes
		int remaining = context.getRemainingTimeInMillis() - windowtime;
		if (remaining > _SLEEP_THRESHOLD)
		{
			try
			{
				Thread.sleep(remaining);
			}
		
			// Who dare interrupt my slumber?
			catch (InterruptedException e)
			{
				// Execution finished
				if (finished.get())
					return;
			}
			
			// Woke up from sleep, so the remaining time is completely
			// wrong now
			remaining = context.getRemainingTimeInMillis() - windowtime;
		}
		
		// Timed out
		if (remaining <= 0)
		{
			// A response from the main thread was server was generated
			// Whichever thread sets this variable first will be the one
			// to make the report
			if (this._generated.getAndSet(true))
				return;
			
			IOpipeConfiguration config = this.config;
			Thread sourcethread = this.sourcethread;
			
			_LOGGER.debug("Thread {} timed out.", sourcethread);
			
			// Generate a timeout exception, but for the ease of use in
			// debugging use the stack trace of the thread which timed out
			IOpipeTimeOutException reported = new IOpipeTimeOutException(
				"Execution timed out.");
			reported.setStackTrace(sourcethread.getStackTrace());
			
			// Send report to the service
			IOpipeMeasurement measurement = new IOpipeMeasurement(config,
				context);
			measurement.setThrown(reported);
			this.service.__sendRequest(measurement.buildRequest());
			
			// Do not need to execute anymore
			return;
		}
	}
}