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rucio-undertaker
executable file
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/
rucio-undertaker
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright European Organization for Nuclear Research (CERN) since 2012
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Undertaker is a daemon to manage expired did.
"""
import argparse
import signal
from rucio.daemons.undertaker.undertaker import Undertaker
def get_parser():
"""
Returns the argparse parser.
"""
parser = argparse.ArgumentParser(description="The Undertaker daemon is responsible for managing expired DIDs. It deletes DIDs, but not replicas by checking if there are DIDs where the 'expired_at' date property is older than the current timestamp.", epilog='''
Create a DID that is already expired by setting its lifetime to -1::
$ python
from rucio.db.sqla.constants import DIDType
from rucio.client.didclient import DIDClient
client = DIDClient()
client.add_did(scope='mock', name='test', type=DIDType.DATASET, lifetime=-1)
Check if the DID exists::
$ rucio list-dids mock:test
+--------------+--------------+
| SCOPE:NAME | [DID TYPE] |
|--------------+--------------|
| mock:test | DATASET |
+--------------+--------------+
Run the daemon::
$ rucio-undertaker --run-once
Check if the DID exists::
$ rucio list-dids mock:test
+--------------+--------------+
| SCOPE:NAME | [DID TYPE] |
|--------------+--------------|
+--------------+--------------+
''', formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument("--run-once", action="store_true", default=False, help='One iteration only')
parser.add_argument("--total-workers", action="store", default=1, type=int, help='Total number of workers')
parser.add_argument("--chunk-size", action="store", default=5, type=int, help='Chunk size')
parser.add_argument('--sleep-time', action="store", default=60, type=int, help='Concurrency control: thread sleep time after each chunk of work')
return parser
if __name__ == "__main__":
parser = get_parser()
args = parser.parse_args()
undertaker = Undertaker(total_workers=args.total_workers, chunk_size=args.chunk_size, once=args.run_once, sleep_time=args.sleep_time)
signal.signal(signal.SIGTERM, undertaker.stop)
try:
undertaker.run()
except KeyboardInterrupt:
undertaker.stop()