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OpenStack Study: auditor.py**** CubicPower OpenStack Study ****
# 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
**** CubicPower OpenStack Study **** class ContainerAuditor(Daemon): """Audit containers."""
**** CubicPower OpenStack Study **** def __init__(self, conf): self.conf = conf self.logger = 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")
**** CubicPower OpenStack Study **** 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
**** CubicPower OpenStack Study **** 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)
**** CubicPower OpenStack Study **** 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)
**** CubicPower OpenStack Study **** 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) 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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