def main():
try:
settings = startup.read_settings()
Log.start(settings.debug)
constants.set(settings.constants)
with startup.SingleInstance(flavor_id=settings.args.filename):
with aws.s3.Bucket(settings.destination) as bucket:
if settings.param.debug:
if settings.source.durable:
Log.error("Can not run in debug mode with a durable queue")
synch = SynchState(bucket.get_key(SYNCHRONIZATION_KEY, must_exist=False))
else:
synch = SynchState(bucket.get_key(SYNCHRONIZATION_KEY, must_exist=False))
if settings.source.durable:
synch.startup()
queue = PersistentQueue(settings.param.queue_file)
if queue:
last_item = queue[len(queue) - 1]
synch.source_key = last_item._meta.count + 1
with pulse.Consumer(settings=settings.source, target=None, target_queue=queue, start=synch.source_key):
Thread.run("pulse log loop", log_loop, settings, synch, queue, bucket)
Thread.wait_for_shutdown_signal(allow_exit=True)
Log.warning("starting shutdown")
queue.close()
Log.note("write shutdown state to S3")
synch.shutdown()
except Exception, e:
Log.error("Problem with etl", e)
