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Merge pull request #1374 from jzelinskie/actionlogarchive

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logrotateworker: perf optimizations
This commit is contained in:
Jimmy Zelinskie 2016-04-15 16:52:08 -04:00
commit c32bbcf520
1 changed files with 23 additions and 18 deletions
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41
workers/logrotateworker.py
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@ -9,7 +9,6 @@ from tempfile import SpooledTemporaryFile
import features
from app import app, storage
from data.database import UseThenDisconnect
from data.model import db_transaction
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
@ -22,7 +21,7 @@ logger = logging.getLogger(__name__)
JSON_MIMETYPE = 'application/json'
STALE_AFTER = timedelta(days=30)
MIN_LOGS_PER_ROTATION = 10000
MEMORY_TEMPFILE_SIZE = 64 * 1024
MEMORY_TEMPFILE_SIZE = 12 * 1024 * 1024
WORKER_FREQUENCY = app.config.get('ACTION_LOG_ROTATION_FREQUENCY', 3600 * 6)
SAVE_PATH = app.config.get('ACTION_LOG_ARCHIVE_PATH')
@ -39,6 +38,13 @@ class LogRotateWorker(Worker):
log_archive = DelegateUserfiles(app, storage, SAVE_LOCATION, SAVE_PATH)
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
while True:
with GlobalLock('ACTION_LOG_ROTATION') as gl:
if not gl:
@ -46,37 +52,36 @@ class LogRotateWorker(Worker):
return
with UseThenDisconnect(app.config):
with db_transaction():
cutoff_date = datetime.now() - STALE_AFTER
start_id = get_stale_logs_start_id()
cutoff_id = get_stale_logs_cutoff_id(cutoff_date)
start_id = get_stale_logs_start_id()
if start_id is None or cutoff_id is None:
logger.warning('No logs to be archived.')
return
if start_id is None:
logger.warning('Failed to find start id')
return
logger.debug('Found starting ID %s and cutoff ID %s', start_id, cutoff_id)
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
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
end_id = start_id + MIN_LOGS_PER_ROTATION
logs_generator = (log_dict(log) for log in get_stale_logs(start_id, end_id))
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) as zipstream:
for chunk in StreamingJSONEncoder().iterencode(logs_generator):
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)