org.mule.runtime.core.policy

Class OperationPolicyProcessor

java.lang.Object

org.mule.runtime.core.policy.OperationPolicyProcessor

All Implemented Interfaces:

Function<org.reactivestreams.Publisher<Event>,org.reactivestreams.Publisher<Event>>, Processor, ReactiveProcessor

public class OperationPolicyProcessor
extends Object
implements Processor

This class is responsible for the processing of a policy applied to a Processor. Currently the only kind of Processor supported is an operation from the SDK.

In order for this class to be able to execute a policy it requires an PolicyChain with the content of the policy. Such policy may have an PolicyNextActionMessageProcessor which will be the one used to execute the provided Processor.

This class enforces the scoping of variables between the actual behaviour and the policy that may be applied to it. To enforce such scoping of variables it uses PolicyStateHandler so the last Event modified by the policy behaviour can be stored and retrieve for later usages. It also uses PolicyEventConverter as a helper class to convert an Event from the policy to the next operation Event or from the next operation result to the Event that must continue the execution of the policy.

Nested Class Summary

Nested classes/interfaces inherited from interface org.mule.runtime.core.api.processor.ReactiveProcessor

ReactiveProcessor.ProcessingType

Constructor Summary

Constructors

Constructor and Description
OperationPolicyProcessor(Policy policy, PolicyStateHandler policyStateHandler, Processor nextProcessor)

Method Summary

Modifier and Type	Method and Description
Event	process(Event operationEvent) Process the policy chain of processors.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mule.runtime.core.api.processor.Processor

apply

Methods inherited from interface org.mule.runtime.core.api.processor.ReactiveProcessor

getProcessingType

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Constructor Detail

OperationPolicyProcessor

public OperationPolicyProcessor(Policy policy,
                                PolicyStateHandler policyStateHandler,
                                Processor nextProcessor)

Method Detail

process

public Event process(Event operationEvent)
              throws org.mule.runtime.api.exception.MuleException

Process the policy chain of processors. The provided nextOperation function has the behaviour to be executed by the next-operation of the chain.

Specified by:

process in interface Processor

Parameters:

operationEvent - the event with the data to execute the operation

Returns:

the result of processing the event through the policy chain.

Throws:

org.mule.runtime.api.exception.MuleException