org.onosproject.net.pi.service

Interface PiTranslator<T extends PiTranslatable,E extends PiEntity>

Type Parameters:

T - PD entity class (translatable to PI)

E - PI entity class

All Known Subinterfaces:

PiFlowRuleTranslator, PiGroupTranslator

@Beta
public interface PiTranslator<T extends PiTranslatable,E extends PiEntity>

A translator of PI entities to equivalent PD ones which offer means to learn translated entities for later use.

Method Summary

Modifier and Type	Method and Description
void	forget(PiHandle<E> handle) Removes any mapping for the given PI entity handle.
void	learn(PiHandle<E> handle, PiTranslatedEntity<T,E> entity) Stores a mapping between the given translated entity and handle.
java.util.Optional<PiTranslatedEntity<T,E>>	lookup(PiHandle<E> handle) Returns a PI translated entity that was previously associated with the given handle, if present.
E	translate(T original, PiPipeconf pipeconf) Translate the given PD entity (original) and returns a PI entity that is equivalent to he PD one for the given pipeconf.

Method Detail

translate

E translate(T original,
            PiPipeconf pipeconf)
     throws PiTranslationException

Translate the given PD entity (original) and returns a PI entity that is equivalent to he PD one for the given pipeconf.

Parameters:

original - PD entity

pipeconf - pipeconf

Returns:

PI entity

Throws:

PiTranslationException - if a translation is not possible (see message for an explanation)

learn

void learn(PiHandle<E> handle,
           PiTranslatedEntity<T,E> entity)

Stores a mapping between the given translated entity and handle.

Parameters:

handle - PI entity handle

entity - PI translated entity

lookup

java.util.Optional<PiTranslatedEntity<T,E>> lookup(PiHandle<E> handle)

Returns a PI translated entity that was previously associated with the given handle, if present. If not present, it means a mapping between the two has not been learned by the system (via learn(PiHandle, PiTranslatedEntity)) or that it has been removed (via forget(PiHandle)). the

Parameters:

handle - PI entity handle

Returns:

optional PI translated entity

forget

void forget(PiHandle<E> handle)

Removes any mapping for the given PI entity handle.

Parameters:

handle - PI entity handle.