org.camunda.bpm.container.impl.jmx.kernel
Class MBeanDeploymentOperation

java.lang.Object
  org.camunda.bpm.container.impl.jmx.kernel.MBeanDeploymentOperation

public class MBeanDeploymentOperation
extends Object

A DeploymentOperation allows bundling multiple deployment steps into a composite operation that succeeds or fails atomically.

The DeploymentOperation is composed of a list of individual steps ( MBeanDeploymentOperationStep). Each step may or may not install new services into the container. If one of the steps fails, the operation makes sure that

• all successfully completed steps are notified by calling their MBeanDeploymentOperationStep.cancelOperationStep(MBeanDeploymentOperation) method.
• all services installed in the context of the operation are removed from the container.

Author:

Daniel Meyer

Nested Class Summary

static class

MBeanDeploymentOperation.MBeanDeploymentOperationBuilder

Field Summary

protected Map<String,Object>	attachments a list of attachments allows to pass state from one operation to another
protected MBeanDeploymentOperationStep	currentStep
protected List<ObjectName>	installedServices the list of services installed by this operation.
protected boolean	isRollbackOnFailure
protected Logger	log
protected String	name the name of this composite operation
protected MBeanServiceContainer	serviceContainer the service container
protected List<MBeanDeploymentOperationStep>	steps the list of steps that make up this composite operation
protected List<MBeanDeploymentOperationStep>	successfulSteps a list of steps that completed successfully

Constructor Summary

MBeanDeploymentOperation(String name, MBeanServiceContainer container, List<MBeanDeploymentOperationStep> steps)

Method Summary

void	addAttachment(String name, Object value)
void	addStep(MBeanDeploymentOperationStep step) Add a new atomic step to the composite operation.
void	execute()
<S> S	getAttachment(String name)
List<ObjectName>	getInstalledServices()
MBeanServiceContainer	getServiceContainer()
protected void	rollbackOperation()

Methods inherited from class java.lang.Object

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

Field Detail

log

protected Logger log

name

protected final String name

the name of this composite operation

serviceContainer

protected final MBeanServiceContainer serviceContainer

the service container

steps

protected final List<MBeanDeploymentOperationStep> steps

the list of steps that make up this composite operation

successfulSteps

protected final List<MBeanDeploymentOperationStep> successfulSteps

a list of steps that completed successfully

installedServices

protected List<ObjectName> installedServices

the list of services installed by this operation. The rollbackOperation() must make sure all these services are removed if the operation fails.

attachments

protected Map<String,Object> attachments

a list of attachments allows to pass state from one operation to another

isRollbackOnFailure

protected boolean isRollbackOnFailure

currentStep

protected MBeanDeploymentOperationStep currentStep

Constructor Detail

MBeanDeploymentOperation

public MBeanDeploymentOperation(String name,
                                MBeanServiceContainer container,
                                List<MBeanDeploymentOperationStep> steps)

Method Detail

getAttachment

public <S> S getAttachment(String name)

addAttachment

public void addAttachment(String name,
                          Object value)

addStep

public void addStep(MBeanDeploymentOperationStep step)

Add a new atomic step to the composite operation. If the operation is currently executing a step, the step is added after the current step.

getServiceContainer

public MBeanServiceContainer getServiceContainer()

execute

public void execute()

rollbackOperation

protected void rollbackOperation()

getInstalledServices

public List<ObjectName> getInstalledServices()