private DeletionTaskRecoveryInfo parseTaskProto(DeletionServiceDeleteTaskProto proto)
throws IOException {
int taskId = proto.getId();
String user = proto.hasUser() ? proto.getUser() : null;
Path subdir = null;
List<Path> basePaths = null;
if (proto.hasSubdir()) {
subdir = new Path(proto.getSubdir());
}
List<String> basedirs = proto.getBasedirsList();
if (basedirs != null && basedirs.size() > 0) {
basePaths = new ArrayList<Path>(basedirs.size());
for (String basedir : basedirs) {
basePaths.add(new Path(basedir));
}
}
FileDeletionTask task = new FileDeletionTask(taskId, this, user, subdir, basePaths);
return new DeletionTaskRecoveryInfo(task, proto.getSuccessorIdsList(), proto.getDeletionTime());
}
private void recordDeletionTaskInStateStore(FileDeletionTask task) {
if (!stateStore.canRecover()) {
// optimize the case where we aren't really recording
return;
}
if (task.taskId != FileDeletionTask.INVALID_TASK_ID) {
return; // task already recorded
}
task.taskId = generateTaskId();
FileDeletionTask[] successors = task.getSuccessorTasks();
// store successors first to ensure task IDs have been generated for them
for (FileDeletionTask successor : successors) {
recordDeletionTaskInStateStore(successor);
}
DeletionServiceDeleteTaskProto.Builder builder = DeletionServiceDeleteTaskProto.newBuilder();
builder.setId(task.taskId);
if (task.getUser() != null) {
builder.setUser(task.getUser());
}
if (task.getSubDir() != null) {
builder.setSubdir(task.getSubDir().toString());
}
builder.setDeletionTime(
System.currentTimeMillis() + TimeUnit.MILLISECONDS.convert(debugDelay, TimeUnit.SECONDS));
if (task.getBaseDirs() != null) {
for (Path dir : task.getBaseDirs()) {
builder.addBasedirs(dir.toString());
}
}
for (FileDeletionTask successor : successors) {
builder.addSuccessorIds(successor.taskId);
}
try {
stateStore.storeDeletionTask(task.taskId, builder.build());
} catch (IOException e) {
LOG.error("Unable to store deletion task " + task.taskId + " for " + task.getSubDir(), e);
}
}