eu.cactosfp7.cactoopt.behaviourinference.registry

Class BehaviourInferenceAlgorithmRegistry

java.lang.Object

eu.cactosfp7.cactoopt.behaviourinference.registry.BehaviourInferenceAlgorithmRegistry

All Implemented Interfaces:

IBehaviourInferenceAlgorithm, EventListener, org.osgi.framework.ServiceListener

public class BehaviourInferenceAlgorithmRegistry
extends Object
implements org.osgi.framework.ServiceListener, IBehaviourInferenceAlgorithm

Registry for behaviour inference algorithms. Listens for services with the IBehaviourInferenceAlgorithm service interface.

Use #inferBehaviour(VirtualMachine) to automatically call the appropriate algorithm based on the information in the registry. No behaviour inference algorithm is invoked if neither the VirtualMachine nor its linked VMImage have a behaviour tag associated to a behaviour inference algorithm.

Author:

groenda

Field Summary

Fields

Modifier and Type	Field and Description
static String	PROPERTY_TAGS Name of the property denoting the tags that an algorithm supports.
static String	PROPERTY_TAGS_DELIMITERS Delimiters used to split the tags string into a set of tags.

Constructor Summary

Constructors

Constructor and Description
BehaviourInferenceAlgorithmRegistry()

Method Summary

Modifier and Type	Method and Description
Collection<IBehaviourInferenceAlgorithm>	getRegisteredAlgorithms()
Collection<org.osgi.framework.ServiceReference<IBehaviourInferenceAlgorithm>>	getRegisteredServices()
Collection<String>	getRegisteredTags()
void	inferBehaviour(VirtualMachine vm, ArchitectureTypeRepository architectureTypeRepo) Infer behaviour for the provided virtual machine.
void	serviceChanged(org.osgi.framework.ServiceEvent event)

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTY_TAGS

public static final String PROPERTY_TAGS

Name of the property denoting the tags that an algorithm supports.

See Also:

Constant Field Values

PROPERTY_TAGS_DELIMITERS

public static final String PROPERTY_TAGS_DELIMITERS

Delimiters used to split the tags string into a set of tags.

See Also:

Constant Field Values

Constructor Detail

BehaviourInferenceAlgorithmRegistry

public BehaviourInferenceAlgorithmRegistry()

Method Detail

serviceChanged

public void serviceChanged(org.osgi.framework.ServiceEvent event)

Specified by:

serviceChanged in interface org.osgi.framework.ServiceListener

inferBehaviour

public void inferBehaviour(VirtualMachine vm,
                           ArchitectureTypeRepository architectureTypeRepo)

Description copied from interface: IBehaviourInferenceAlgorithm

Infer behaviour for the provided virtual machine.

The behaviour is added to the virtual machine description. The behaviour states the architecture type for which the resource demand is inferred. The type is taken from the repository. Its created there if it does not exist yet. Uses ArchitectureTypeRepository.

Specified by:

inferBehaviour in interface IBehaviourInferenceAlgorithm

Parameters:

vm - The virtual machine.

architectureTypeRepo - The architecture type repository.

getRegisteredAlgorithms

public Collection<IBehaviourInferenceAlgorithm> getRegisteredAlgorithms()

Returns:

all registered algorithms.

getRegisteredTags

public Collection<String> getRegisteredTags()

Returns:

all registered tags, for which an behaviour inference algorithm is available.

getRegisteredServices

public Collection<org.osgi.framework.ServiceReference<IBehaviourInferenceAlgorithm>> getRegisteredServices()

Returns:

all registered services.