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quay/workers/logrotateworker.py
Joseph Schorr fa21e42ffb Add default location for action log archiving
Prevents the logs from being written to the preferred storage, which means they will jump around
2017-07-10 12:37:44 +03:00

124 lines
4.1 KiB
Python

import logging
import json
import time
from datetime import timedelta, datetime
from gzip import GzipFile
from tempfile import SpooledTemporaryFile
import features
from app import app, storage
from data.database import UseThenDisconnect
from data.model.log import (get_stale_logs, get_stale_logs_start_id,
get_stale_logs_cutoff_id, delete_stale_logs)
from data.userfiles import DelegateUserfiles
from util.locking import GlobalLock, LockNotAcquiredException
from util.log import logfile_path
from util.streamingjsonencoder import StreamingJSONEncoder
from workers.worker import Worker
logger = logging.getLogger(__name__)
JSON_MIMETYPE = 'application/json'
STALE_AFTER = timedelta(days=30)
MIN_LOGS_PER_ROTATION = 10000
MEMORY_TEMPFILE_SIZE = 12 * 1024 * 1024
WORKER_FREQUENCY = app.config.get('ACTION_LOG_ROTATION_FREQUENCY', 60 * 60 * 12)
SAVE_PATH = app.config.get('ACTION_LOG_ARCHIVE_PATH')
SAVE_LOCATION = app.config.get('ACTION_LOG_ARCHIVE_LOCATION')
class LogRotateWorker(Worker):
""" Worker used to rotate old logs out the database and into storage. """
def __init__(self):
super(LogRotateWorker, self).__init__()
self.add_operation(self._archive_logs, WORKER_FREQUENCY)
def _archive_logs(self):
logger.debug('Attempting to rotate log entries')
with UseThenDisconnect(app.config):
cutoff_date = datetime.now() - STALE_AFTER
cutoff_id = get_stale_logs_cutoff_id(cutoff_date)
if cutoff_id is None:
logger.warning('Failed to find cutoff id')
return
logs_archived = True
while logs_archived:
try:
with GlobalLock('ACTION_LOG_ROTATION'):
logs_archived = self._perform_archiving(cutoff_id)
except LockNotAcquiredException:
return
def _perform_archiving(self, cutoff_id):
save_location = SAVE_LOCATION
if not save_location:
# Pick the *same* save location for all instances. This is a fallback if
# a location was not configured.
save_location = storage.locations[0]
log_archive = DelegateUserfiles(app, storage, save_location, SAVE_PATH)
with UseThenDisconnect(app.config):
start_id = get_stale_logs_start_id()
if start_id is None:
logger.warning('Failed to find start id')
return False
logger.debug('Found starting ID %s and cutoff ID %s', start_id, cutoff_id)
approx_count = cutoff_id - start_id
if approx_count < MIN_LOGS_PER_ROTATION:
logger.debug('Not enough stale logs to warrant rotation (approx %d)', approx_count)
return False
end_id = start_id + MIN_LOGS_PER_ROTATION
logs = [log_dict(log) for log in get_stale_logs(start_id, end_id)]
logger.debug('Archiving logs from IDs %s to %s', start_id, end_id)
with SpooledTemporaryFile(MEMORY_TEMPFILE_SIZE) as tempfile:
with GzipFile('temp_action_log_rotate', fileobj=tempfile, compresslevel=1) as zipstream:
for chunk in StreamingJSONEncoder().iterencode(logs):
zipstream.write(chunk)
tempfile.seek(0)
filename = '%d-%d.txt.gz' % (start_id, end_id)
log_archive.store_file(tempfile, JSON_MIMETYPE, content_encoding='gzip',
file_id=filename)
logger.debug('Finished archiving logs from IDs %s to %s', start_id, end_id)
with UseThenDisconnect(app.config):
logger.debug('Deleting logs from IDs %s to %s', start_id, end_id)
delete_stale_logs(start_id, end_id)
return True
def log_dict(log):
""" Pretty prints a LogEntry in JSON. """
return {'kind_id': log.kind_id,
'account_id': log.account_id,
'performer_id': log.performer_id,
'repository_id': log.repository_id,
'datetime': str(log.datetime),
'ip': str(log.ip),
'metadata_json': json.loads(str(log.metadata_json))}
def main():
logging.config.fileConfig(logfile_path(debug=True), disable_existing_loggers=False)
if not features.ACTION_LOG_ROTATION or None in [SAVE_PATH, SAVE_LOCATION]:
logger.debug('Action log rotation worker not enabled; skipping')
while True:
time.sleep(100000)
worker = LogRotateWorker()
worker.start()
if __name__ == "__main__":
main()