/**
* Finds the multichunks that need to be downloaded to apply the given file system actions. The
* method looks at all {@link FileCreatingFileSystemAction}s and returns their multichunks.
*/
private Set<MultiChunkId> determineRequiredMultiChunks(
List<FileSystemAction> actions, MemoryDatabase winnersDatabase) {
Set<MultiChunkId> multiChunksToDownload = new HashSet<MultiChunkId>();
for (FileSystemAction action : actions) {
if (action
instanceof
FileCreatingFileSystemAction) { // TODO [low] This adds ALL multichunks even though some
// might be available locally
multiChunksToDownload.addAll(
determineMultiChunksToDownload(action.getFile2(), winnersDatabase));
}
}
return multiChunksToDownload;
}
private String[] toArray(List<FileSystemAction> actions) {
String[] actionStrArr = new String[actions.size()];
for (int i = 0; i < actions.size(); i++) {
FileSystemAction action = actions.get(i);
actionStrArr[i] =
action.getClass().getSimpleName()
+ ","
+ actions.get(i).getFile2().getPath()
+ ","
+ actions.get(i).getType();
System.out.println("actual[" + i + "]: " + actionStrArr[i]);
}
return actionStrArr;
}
/**
* Applies the given file system actions in a sensible order. To do that, the given actions are
* first sorted using the {@link FileSystemActionComparator} and then executed individually using
* {@link FileSystemAction#execute()}.
*/
private void applyFileSystemActions(List<FileSystemAction> actions) throws Exception {
// Sort
FileSystemActionComparator actionComparator = new FileSystemActionComparator();
actionComparator.sort(actions);
logger.log(Level.FINER, "- Applying file system actions (sorted!) ...");
// Apply
for (FileSystemAction action : actions) {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, " + {0}", action);
}
// Execute the file system action
// Note that exceptions are not caught here, to prevent
// apply-failed-delete-on-up situations.
action.execute();
}
}
