org.jclouds.compute.suppliers
Class ImageCacheSupplier

java.lang.Object
  org.jclouds.compute.suppliers.ImageCacheSupplier

All Implemented Interfaces:

com.google.common.base.Supplier<Set<? extends Image>>

@Singleton
public class ImageCacheSupplier
extends Object
implements com.google.common.base.Supplier<Set<? extends Image>>

Image supplier that allows new images to be registered.

This is a wrapper for the memoized image supplier (the actual image cache), to provide a way to register new images as needed. Once a new image is created by the ImageExtension, or discovered by other means (see https://issues.apache.org/jira/browse/JCLOUDS-570) this supplier will allow the image to be appended to the cached list, so it can be properly used normally.

Constructor Summary

ImageCacheSupplier(com.google.common.base.Supplier<Set<? extends Image>> imageCache, long sessionIntervalSeconds)

Method Summary

Set<? extends Image>	get()
void	registerImage(Image image) Registers a new image in the image cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageCacheSupplier

@Inject
public ImageCacheSupplier(@Named(value="imageCache")
                                 com.google.common.base.Supplier<Set<? extends Image>> imageCache,
                                 @Named(value="jclouds.session-interval")
                                 long sessionIntervalSeconds)

Method Detail

get

public Set<? extends Image> get()

Specified by:

get in interface com.google.common.base.Supplier<Set<? extends Image>>

registerImage

public void registerImage(Image image)

Registers a new image in the image cache.

This method should be called to register new images into the image cache, when some image that is known to exist in the provider is still not cached. For example, this can happen when an image is created after the image cache has been populated for the first time.

Note that this method does not check if the image is already cached, to avoid loading all images if the image cache is still not populated.

Parameters:

image - The image to be registered to the cache.