org.voltdb.task

Interface IntervalGenerator

All Superinterfaces:

Initializable

public interface IntervalGenerator
extends Initializable

Interface which calculates the time interval which should elapse until the next action should be performed

Method Summary

Modifier and Type	Method and Description
Interval	getFirstInterval() This method is invoked only once to obtain the first interval.

Methods inherited from interface org.voltdb.task.Initializable

getDependencies

Method Detail

getFirstInterval

Interval getFirstInterval()

This method is invoked only once to obtain the first interval. The first action will be performed after this time interval has elapsed. After the action has been performed callback will be invoked with the result of the action. The return of the callback will be used as the next interval.

If this method throws an exception or returns null the task instance will halted and put into an error state.

Returns:

Interval with the time interval until the next action should be performed and callback to invoke