org.apache.twill.api

Interface TwillSpecification

public interface TwillSpecification

Represents specification of a TwillApplication.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	TwillSpecification.Builder Builder for constructing instance of TwillSpecification.
static interface	TwillSpecification.Order Defines execution order.
static interface	TwillSpecification.PlacementPolicy Defines a container placement policy.

Method Summary

Modifier and Type	Method and Description
EventHandlerSpecification	getEventHandler()
String	getName()
List<TwillSpecification.Order>	getOrders()
List<TwillSpecification.PlacementPolicy>	getPlacementPolicies()
Map<String,RuntimeSpecification>	getRunnables()

Method Detail

getName

String getName()

Returns:

Name of the application.

getRunnables

Map<String,RuntimeSpecification> getRunnables()

Returns:

A map from TwillRunnable name to RuntimeSpecification.

getOrders

List<TwillSpecification.Order> getOrders()

Returns:

Returns a list of runnable names that should be executed in the given order.

getPlacementPolicies

List<TwillSpecification.PlacementPolicy> getPlacementPolicies()

Returns:

Returns all TwillSpecification.PlacementPolicy for this application.

getEventHandler

@Nullable
EventHandlerSpecification getEventHandler()

Returns:

The EventHandlerSpecification for the EventHandler to be used for this application, or null if no event handler has been provided.