88 lines
No EOL
2.3 KiB
Python
88 lines
No EOL
2.3 KiB
Python
import logging
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import json
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import daemon
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import time
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import argparse
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from apscheduler.scheduler import Scheduler
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from data.queue import image_diff_queue
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from data.database import db as db_connection
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from data.model import DataModelException
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from endpoints.registry import process_image_changes
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root_logger = logging.getLogger('')
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root_logger.setLevel(logging.DEBUG)
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FORMAT = '%(asctime)-15s - %(levelname)s - %(pathname)s - %(funcName)s - %(message)s'
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formatter = logging.Formatter(FORMAT)
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logger = logging.getLogger(__name__)
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def process_work_items():
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logger.debug('Getting work item from queue.')
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item = image_diff_queue.get()
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while item:
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logger.debug('Queue gave us some work: %s' % item.body)
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request = json.loads(item.body)
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try:
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image_id = request['image_id']
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namespace = request['namespace']
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repository = request['repository']
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process_image_changes(namespace, repository, image_id)
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except DataModelException:
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# This exception is unrecoverable, and the item should continue and be
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# marked as complete.
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msg = ('Image does not exist in database \'%s\' for repo \'%s/\'%s\'' %
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(image_id, namespace, repository))
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logger.warning(msg)
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image_diff_queue.complete(item)
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item = image_diff_queue.get()
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logger.debug('No more work.')
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if not db_connection.is_closed():
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logger.debug('Closing thread db connection.')
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db_connection.close()
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def start_worker():
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logger.debug("Scheduling worker.")
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sched = Scheduler()
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sched.start()
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sched.add_interval_job(process_work_items, seconds=30)
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while True:
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time.sleep(60 * 60 * 24) # sleep one day, basically forever
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parser = argparse.ArgumentParser(description='Worker daemon to compute diffs')
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parser.add_argument('-D', action='store_true', default=False,
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help='Run the worker in daemon mode.')
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parser.add_argument('--log', default='diffsworker.log',
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help='Specify the log file for the worker as a daemon.')
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args = parser.parse_args()
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if args.D:
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handler = logging.FileHandler(args.log)
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handler.setFormatter(formatter)
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root_logger.addHandler(handler)
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with daemon.DaemonContext(files_preserve=[handler.stream]):
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start_worker()
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else:
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handler = logging.StreamHandler()
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handler.setFormatter(formatter)
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root_logger.addHandler(handler)
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start_worker() |