org.jclouds.nodepool.internal
Class NodeMetadataStoreCache

java.lang.Object
  org.jclouds.nodepool.internal.NodeMetadataStoreCache

All Implemented Interfaces:

NodeMetadataStore

@Singleton
public class NodeMetadataStoreCache
extends Object
implements NodeMetadataStore

Constructor Summary

NodeMetadataStoreCache(NodeMetadataStore backend)

Method Summary

void	deleteAllMappings() Clears all mappings.
void	deleteMapping(String backendNodeId) Removes the mapping from storage.
NodeMetadata	load(NodeMetadata backendNode) Loads the previously stored user NodeMetadata corresponding to the provided backend NodeMetadata.
Set<NodeMetadata>	loadAll(Set<NodeMetadata> backendNodes) Loads frontend NodeMetadata for all provided backend nodes.
NodeMetadata	store(NodeMetadata backendNode, TemplateOptions userOptions, String userGroup) Associates the provided user options and group with the provided backend NodeMetadata, then build a frontend version of node metadata that has some fields from the backend node such as id, name or location, and some fields from the provided userOptions, such as userMetadata or tags.

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeMetadataStoreCache

@Inject
public NodeMetadataStoreCache(NodeMetadataStore backend)

Method Detail

store

public NodeMetadata store(NodeMetadata backendNode,
                          TemplateOptions userOptions,
                          String userGroup)

Description copied from interface: NodeMetadataStore

Associates the provided user options and group with the provided backend NodeMetadata, then build a frontend version of node metadata that has some fields from the backend node such as id, name or location, and some fields from the provided userOptions, such as userMetadata or tags.

Specified by:

store in interface NodeMetadataStore

Parameters:

backendNode - the backend node's NodeMetadata

userOptions - the user provided options

userGroup - the user selected group

Returns:

a version of NodeMetadata that includes information from the backend node and form the user provided options and group.

deleteMapping

public void deleteMapping(String backendNodeId)

Description copied from interface: NodeMetadataStore

Removes the mapping from storage.

Specified by:

deleteMapping in interface NodeMetadataStore

deleteAllMappings

public void deleteAllMappings()

Description copied from interface: NodeMetadataStore

Clears all mappings.

Specified by:

deleteAllMappings in interface NodeMetadataStore

load

public NodeMetadata load(NodeMetadata backendNode)

Description copied from interface: NodeMetadataStore

Loads the previously stored user NodeMetadata corresponding to the provided backend NodeMetadata.

Specified by:

load in interface NodeMetadataStore

Returns:

the frontend NodeMetadata or null of this backend node has no mapping

loadAll

public Set<NodeMetadata> loadAll(Set<NodeMetadata> backendNodes)

Description copied from interface: NodeMetadataStore

Loads frontend NodeMetadata for all provided backend nodes.

Specified by:

loadAll in interface NodeMetadataStore

Returns: