org.camunda.bpm.client.backoff

Interface BackoffStrategy

All Known Implementing Classes:

ExponentialBackoffStrategy

public interface BackoffStrategy

Provides a way to define a back off between fetch and lock requests.

Note: Since an implementation of this interface may be executed by multiple threads, it is recommended to implement the custom backoff strategy in a thread-safe manner.

Author:

Nikola Koevski

Method Summary

Modifier and Type	Method and Description
long	calculateBackoffTime() Calculates the back off time and is invoked after reconfigure(List).
void	reconfigure(List<ExternalTask> externalTasks) Reconfigures the back off strategy based on the fetched external tasks and is invoked before calculateBackoffTime().

Method Detail

reconfigure

void reconfigure(List<ExternalTask> externalTasks)

Reconfigures the back off strategy based on the fetched external tasks and is invoked before calculateBackoffTime().

The implementation might count the amount of invocations and realize a strategy reset.

Parameters:

externalTasks - which have been fetched

calculateBackoffTime

long calculateBackoffTime()

Calculates the back off time and is invoked after reconfigure(List).

Returns:

the back off time between fetch and lock requests in milliseconds