co.cask.coopr.scheduler

Class ServiceDependencyResolver

java.lang.Object

co.cask.coopr.scheduler.ServiceDependencyResolver

public class ServiceDependencyResolver
extends Object

This dependency resolver takes services placed on a cluster, some ClusterAction that needs to be performed, and determines for a given ProvisionerAction to be performed on a Service, what other actions need to be performed on what services before the given action can be performed.

Constructor Summary

Constructors

Constructor and Description
ServiceDependencyResolver(Actions actions, Map<String,Service> clusterServices)

Method Summary

Methods

Modifier and Type	Method and Description
Set<ActionOnService>	getDirectDependentActions(String service, ProvisionerAction action) Given a service and action, return a set of ActionOnService describing what other actions on services must be performed before the given service and action can be performed.
boolean	runtimeDependsOn(String service1, String service2) Returns whether or not service1 depends on service2 in some way for runtime actions, either directly or indirectly.

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceDependencyResolver

public ServiceDependencyResolver(Actions actions,
                         Map<String,Service> clusterServices)

Method Detail

getDirectDependentActions

public Set<ActionOnService> getDirectDependentActions(String service,
                                             ProvisionerAction action)

Given a service and action, return a set of ActionOnService describing what other actions on services must be performed before the given service and action can be performed.

Parameters:

service - Service to check.

action - Action to check.

Returns:

Set of actions on services that must be performed before the input can be performed.

runtimeDependsOn

public boolean runtimeDependsOn(String service1,
                       String service2)

Returns whether or not service1 depends on service2 in some way for runtime actions, either directly or indirectly.

Parameters:

service1 - Service to check dependency for.

service2 - Service to check dependency on.

Returns:

True if service 1 depends on service 2 directly or indirectly, false if not.