org.camunda.bpm.engine.impl.jobexecutor
Class SequentialJobAcquisitionRunnable

java.lang.Object
  org.camunda.bpm.engine.impl.jobexecutor.AcquireJobsRunnable
      org.camunda.bpm.engine.impl.jobexecutor.SequentialJobAcquisitionRunnable

All Implemented Interfaces:

Runnable

public class SequentialJobAcquisitionRunnable
extends AcquireJobsRunnable

AcquireJobsRunnable able to serve multiple process engines.

Continuously acquires jobs for all registered process engines until interruption. For every such acquisition cycle, jobs are acquired and submitted for execution.

For one cycle, all acquisition-related events (acquired jobs by engine, rejected jobs by engine, exceptions during acquisition, etc.) are collected in an instance of JobAcquisitionContext. The context is then handed to a JobAcquisitionStrategy that determines the there is before the next acquisition cycles begins and how many jobs are to be acquired next.

Author:

Daniel Meyer

Field Summary

protected JobAcquisitionContext	acquisitionContext
protected JobExecutorLogger	LOG

Fields inherited from class org.camunda.bpm.engine.impl.jobexecutor.AcquireJobsRunnable

isInterrupted, isJobAdded, isWaiting, jobExecutor, MONITOR

Constructor Summary

SequentialJobAcquisitionRunnable(JobExecutor jobExecutor)

Method Summary

protected AcquiredJobs	acquireJobs(JobAcquisitionContext context, JobAcquisitionStrategy acquisitionStrategy, ProcessEngineImpl currentProcessEngine)
protected void	configureNextAcquisitionCycle(JobAcquisitionContext acquisitionContext, JobAcquisitionStrategy acquisitionStrategy) Reconfigure the acquisition strategy based on the current cycle's acquisition context.
protected void	executeJobs(JobAcquisitionContext context, ProcessEngineImpl currentProcessEngine, AcquiredJobs acquiredJobs)
JobAcquisitionContext	getAcquisitionContext()
protected JobAcquisitionContext	initializeAcquisitionContext()
protected JobAcquisitionStrategy	initializeAcquisitionStrategy()
void	run()

Methods inherited from class org.camunda.bpm.engine.impl.jobexecutor.AcquireJobsRunnable

clearJobAddedNotification, isJobAdded, jobWasAdded, stop, suspendAcquisition

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

protected final JobExecutorLogger LOG

acquisitionContext

protected JobAcquisitionContext acquisitionContext

Constructor Detail

SequentialJobAcquisitionRunnable

public SequentialJobAcquisitionRunnable(JobExecutor jobExecutor)

Method Detail

run

public void run()

initializeAcquisitionContext

protected JobAcquisitionContext initializeAcquisitionContext()

configureNextAcquisitionCycle

protected void configureNextAcquisitionCycle(JobAcquisitionContext acquisitionContext,
                                             JobAcquisitionStrategy acquisitionStrategy)

Reconfigure the acquisition strategy based on the current cycle's acquisition context. A strategy implementation may update internal data structure to calculate a different wait time before the next cycle of acquisition is performed.

initializeAcquisitionStrategy

protected JobAcquisitionStrategy initializeAcquisitionStrategy()

getAcquisitionContext

public JobAcquisitionContext getAcquisitionContext()

executeJobs

protected void executeJobs(JobAcquisitionContext context,
                           ProcessEngineImpl currentProcessEngine,
                           AcquiredJobs acquiredJobs)

acquireJobs

protected AcquiredJobs acquireJobs(JobAcquisitionContext context,
                                   JobAcquisitionStrategy acquisitionStrategy,
                                   ProcessEngineImpl currentProcessEngine)