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# Copyright (c) 2010-2012 OpenStack Foundation
#
# 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.
import os
import time
from swift import gettext_ as _
from random import random
from eventlet import Timeout
import swift.common.db
from swift.container.backend import ContainerBroker, DATADIR
from swift.common.utils import get_logger, audit_location_generator, \
config_true_value, dump_recon_cache, ratelimit_sleep
from swift.common.daemon import Daemon
class ContainerAuditor(Daemon):
"""Audit containers."""
def __init__(self, conf, logger=None):
self.conf = conf
self.logger = logger or get_logger(conf, log_route='container-auditor')
self.devices = conf.get('devices', '/srv/node')
self.mount_check = config_true_value(conf.get('mount_check', 'true'))
self.interval = int(conf.get('interval', 1800))
self.container_passes = 0
self.container_failures = 0
self.containers_running_time = 0
self.max_containers_per_second = \
float(conf.get('containers_per_second', 200))
swift.common.db.DB_PREALLOCATION = \
config_true_value(conf.get('db_preallocation', 'f'))
self.recon_cache_path = conf.get('recon_cache_path',
'/var/cache/swift')
self.rcache = os.path.join(self.recon_cache_path, "container.recon")
def _one_audit_pass(self, reported):
all_locs = audit_location_generator(self.devices, DATADIR, '.db',
mount_check=self.mount_check,
logger=self.logger)
for path, device, partition in all_locs:
self.container_audit(path)
if time.time() - reported >= 3600: # once an hour
self.logger.info(
_('Since %(time)s: Container audits: %(pass)s passed '
'audit, %(fail)s failed audit'),
{'time': time.ctime(reported),
'pass': self.container_passes,
'fail': self.container_failures})
dump_recon_cache(
{'container_audits_since': reported,
'container_audits_passed': self.container_passes,
'container_audits_failed': self.container_failures},
self.rcache, self.logger)
reported = time.time()
self.container_passes = 0
self.container_failures = 0
self.containers_running_time = ratelimit_sleep(
self.containers_running_time, self.max_containers_per_second)
return reported
def run_forever(self, *args, **kwargs):
"""Run the container audit until stopped."""
reported = time.time()
time.sleep(random() * self.interval)
while True:
self.logger.info(_('Begin container audit pass.'))
begin = time.time()
try:
reported = self._one_audit_pass(reported)
except (Exception, Timeout):
self.logger.increment('errors')
self.logger.exception(_('ERROR auditing'))
elapsed = time.time() - begin
if elapsed < self.interval:
time.sleep(self.interval - elapsed)
self.logger.info(
_('Container audit pass completed: %.02fs'), elapsed)
dump_recon_cache({'container_auditor_pass_completed': elapsed},
self.rcache, self.logger)
def run_once(self, *args, **kwargs):
"""Run the container audit once."""
self.logger.info(_('Begin container audit "once" mode'))
begin = reported = time.time()
self._one_audit_pass(reported)
elapsed = time.time() - begin
self.logger.info(
_('Container audit "once" mode completed: %.02fs'), elapsed)
dump_recon_cache({'container_auditor_pass_completed': elapsed},
self.rcache, self.logger)
def container_audit(self, path):
"""
Audits the given container path
:param path: the path to a container db
"""
start_time = time.time()
try:
broker = ContainerBroker(path, logger=self.logger)
if not broker.is_deleted():
broker.get_info()
self.logger.increment('passes')
self.container_passes += 1
self.logger.debug('Audit passed for %s', broker)
except (Exception, Timeout):
self.logger.increment('failures')
self.container_failures += 1
self.logger.exception(_('ERROR Could not get container info %s'),
path)
self.logger.timing_since('timing', start_time)
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