/**
* Creates an id for a file based on the given id of the container.
*
* @param containerId the id of the container
* @return a file id based on the given container id
*/
public static long createFileId(long containerId) {
long id = BlockId.createBlockId(containerId, BlockId.getMaxSequenceNumber());
if (id == INVALID_FILE_ID) {
// Right now, there's not much we can do if the file id we're returning is -1, since the file
// id is completely determined by the container id passed in. However, by the current
// algorithm, -1 will be the last file id generated, so the chances somebody will get to that
// are slim. For now we just log it.
LOG.warn("Created file id -1, which is invalid");
}
return id;
}
/**
* * Get sorted fileIds of the files cached in the worker.
*
* @return a sorted fileId list
*/
private List<Long> getSortedFileIds() {
Set<Long> fileIds = new HashSet<Long>();
BlockStoreMeta storeMeta = mBlockDataManager.getStoreMeta();
for (List<Long> blockIds : storeMeta.getBlockList().values()) {
for (long blockId : blockIds) {
long fileId =
BlockId.createBlockId(BlockId.getContainerId(blockId), BlockId.getMaxSequenceNumber());
fileIds.add(fileId);
}
}
List<Long> sortedFileIds = new ArrayList<Long>(fileIds);
Collections.sort(sortedFileIds);
return sortedFileIds;
}