/**
* Return a map of pool URI to a list of descriptors in that pool.
*
* @param descriptors List<VolumeDescriptors>
* @return Map of pool URI to List<VolumeDescriptors> in that pool
*/
public static Map<URI, List<VolumeDescriptor>> getPoolMap(List<VolumeDescriptor> descriptors) {
HashMap<URI, List<VolumeDescriptor>> poolMap = new HashMap<URI, List<VolumeDescriptor>>();
for (VolumeDescriptor desc : descriptors) {
if (poolMap.get(desc.getPoolURI()) == null) {
poolMap.put(desc.getPoolURI(), new ArrayList<VolumeDescriptor>());
}
poolMap.get(desc.getPoolURI()).add(desc);
}
return poolMap;
}
/**
* Return a map of pool URI to a list of descriptors in that pool of each size.
*
* @param descriptors List<VolumeDescriptors>
* @return Map of pool URI to a map of identical sized volumes to List<VolumeDescriptors> in that
* pool of that size
*/
public static Map<URI, Map<Long, List<VolumeDescriptor>>> getPoolSizeMap(
List<VolumeDescriptor> descriptors) {
Map<URI, Map<Long, List<VolumeDescriptor>>> poolSizeMap =
new HashMap<URI, Map<Long, List<VolumeDescriptor>>>();
for (VolumeDescriptor desc : descriptors) {
// If the outside pool map doesn't exist, create it.
if (poolSizeMap.get(desc.getPoolURI()) == null) {
poolSizeMap.put(desc.getPoolURI(), new HashMap<Long, List<VolumeDescriptor>>());
}
// If the inside size map doesn't exist, create it.
if (poolSizeMap.get(desc.getPoolURI()).get(desc.getVolumeSize()) == null) {
poolSizeMap
.get(desc.getPoolURI())
.put(desc.getVolumeSize(), new ArrayList<VolumeDescriptor>());
}
// Add volume to the list
poolSizeMap.get(desc.getPoolURI()).get(desc.getVolumeSize()).add(desc);
}
return poolSizeMap;
}