Class RemoteStep

java.lang.Object

org.springframework.batch.core.step.AbstractStep

org.springframework.batch.integration.remote.RemoteStep

All Implemented Interfaces:

Step, StoppableStep, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.InitializingBean

public class RemoteStep
extends AbstractStep

A Step implementation that delegates the execution to a remote worker step through messaging.

The remote worker step must be listening to the same message channel to receive step execution requests.

The step execution is created locally and sent to the remote worker step which will update its status and context in the job repository. The RemoteStep will poll the job repository to check for step completion.

Since:

6.0.0

Author:

Mahmoud Ben Hassine

Field Summary

Fields inherited from class AbstractStep

observationRegistry

Fields inherited from interface Step

STEP_TYPE_KEY

Constructor Summary

Constructors

Constructor	Description
RemoteStep(String name, String remoteStepName, JobRepository jobRepository, org.springframework.integration.core.MessagingTemplate messagingTemplate)	Create a new RemoteStep instance.

Method Summary

Modifier and Type	Method	Description
protected void	doExecute(StepExecution stepExecution)	Extension point for subclasses to execute business logic.
void	setMessageChannel(org.springframework.messaging.MessageChannel messageChannel)
void	setPollInterval(long pollInterval)
void	setTimeout(long timeout)

Methods inherited from class AbstractStep

afterPropertiesSet, close, doExecutionRegistration, doExecutionRelease, execute, getCompositeListener, getJobRepository, getName, getStartLimit, isAllowStartIfComplete, open, registerStepExecutionListener, setAllowStartIfComplete, setBeanName, setJobRepository, setName, setObservationRegistry, setStartLimit, setStepExecutionListeners, toString

Methods inherited from class Object

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

Methods inherited from interface StoppableStep

stop

Constructor Details

RemoteStep

public RemoteStep(String name,
 String remoteStepName,
 JobRepository jobRepository,
 org.springframework.integration.core.MessagingTemplate messagingTemplate)

Create a new RemoteStep instance.

Parameters:

name - the name of this step

remoteStepName - the name of the remote worker step to execute

jobRepository - the job repository to use

messagingTemplate - the messaging template to use to send step execution requests

Method Details

setTimeout

public void setTimeout(long timeout)

setPollInterval

public void setPollInterval(long pollInterval)

setMessageChannel

public void setMessageChannel(org.springframework.messaging.MessageChannel messageChannel)

doExecute

protected void doExecute(StepExecution stepExecution)
                  throws Exception

Description copied from class: AbstractStep

Extension point for subclasses to execute business logic. Subclasses should set the ExitStatus on the StepExecution before returning.

Specified by:

doExecute in class AbstractStep

Parameters:

stepExecution - the current step context

Throws:

Exception - checked exception thrown by implementation