public void execute(Map<String, String> jobData) {
long numUsers = DatastoreUtil.count(User.all());
long numRules = DatastoreUtil.count(Rule.all());
long numFileMoves = DatastoreUtil.count(FileMove.all());
UsageStats stats = new UsageStats(numUsers, numRules, numFileMoves);
stats.save();
Logger.info("Finished collecting usage stats: " + stats);
}