8ac292595f
cleaned up pep8 (v1.3.3) in all files this patch touches Change-Id: I30e8314dfdc23fb70ab83741a548db9905dfccff
295 lines
12 KiB
Python
295 lines
12 KiB
Python
# Copyright (c) 2010-2012 OpenStack, LLC.
|
|
#
|
|
# 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 logging
|
|
import os
|
|
import signal
|
|
import sys
|
|
import time
|
|
from random import random, shuffle
|
|
from tempfile import mkstemp
|
|
|
|
from eventlet import spawn, patcher, Timeout
|
|
|
|
import swift.common.db
|
|
from swift.container.server import DATADIR
|
|
from swift.common.bufferedhttp import http_connect
|
|
from swift.common.db import ContainerBroker
|
|
from swift.common.exceptions import ConnectionTimeout
|
|
from swift.common.ring import Ring
|
|
from swift.common.utils import get_logger, config_true_value, dump_recon_cache
|
|
from swift.common.daemon import Daemon
|
|
from swift.common.http import is_success, HTTP_INTERNAL_SERVER_ERROR
|
|
|
|
|
|
class ContainerUpdater(Daemon):
|
|
"""Update container information in account listings."""
|
|
|
|
def __init__(self, conf):
|
|
self.conf = conf
|
|
self.logger = get_logger(conf, log_route='container-updater')
|
|
self.devices = conf.get('devices', '/srv/node')
|
|
self.mount_check = config_true_value(conf.get('mount_check', 'true'))
|
|
self.swift_dir = conf.get('swift_dir', '/etc/swift')
|
|
self.interval = int(conf.get('interval', 300))
|
|
self.account_ring = None
|
|
self.concurrency = int(conf.get('concurrency', 4))
|
|
self.slowdown = float(conf.get('slowdown', 0.01))
|
|
self.node_timeout = int(conf.get('node_timeout', 3))
|
|
self.conn_timeout = float(conf.get('conn_timeout', 0.5))
|
|
self.no_changes = 0
|
|
self.successes = 0
|
|
self.failures = 0
|
|
self.account_suppressions = {}
|
|
self.account_suppression_time = \
|
|
float(conf.get('account_suppression_time', 60))
|
|
self.new_account_suppressions = None
|
|
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 get_account_ring(self):
|
|
"""Get the account ring. Load it if it hasn't been yet."""
|
|
if not self.account_ring:
|
|
self.account_ring = Ring(self.swift_dir, ring_name='account')
|
|
return self.account_ring
|
|
|
|
def get_paths(self):
|
|
"""
|
|
Get paths to all of the partitions on each drive to be processed.
|
|
|
|
:returns: a list of paths
|
|
"""
|
|
paths = []
|
|
for device in os.listdir(self.devices):
|
|
dev_path = os.path.join(self.devices, device)
|
|
if self.mount_check and not os.path.ismount(dev_path):
|
|
self.logger.warn(_('%s is not mounted'), device)
|
|
continue
|
|
con_path = os.path.join(dev_path, DATADIR)
|
|
if not os.path.exists(con_path):
|
|
continue
|
|
for partition in os.listdir(con_path):
|
|
paths.append(os.path.join(con_path, partition))
|
|
shuffle(paths)
|
|
return paths
|
|
|
|
def _load_suppressions(self, filename):
|
|
try:
|
|
with open(filename, 'r') as tmpfile:
|
|
for line in tmpfile:
|
|
account, until = line.split()
|
|
until = float(until)
|
|
self.account_suppressions[account] = until
|
|
except Exception:
|
|
self.logger.exception(
|
|
_('ERROR with loading suppressions from %s: ') % filename)
|
|
finally:
|
|
os.unlink(filename)
|
|
|
|
def run_forever(self, *args, **kwargs):
|
|
"""
|
|
Run the updator continuously.
|
|
"""
|
|
time.sleep(random() * self.interval)
|
|
while True:
|
|
self.logger.info(_('Begin container update sweep'))
|
|
begin = time.time()
|
|
now = time.time()
|
|
expired_suppressions = \
|
|
[a for a, u in self.account_suppressions.iteritems()
|
|
if u < now]
|
|
for account in expired_suppressions:
|
|
del self.account_suppressions[account]
|
|
pid2filename = {}
|
|
# read from account ring to ensure it's fresh
|
|
self.get_account_ring().get_nodes('')
|
|
for path in self.get_paths():
|
|
while len(pid2filename) >= self.concurrency:
|
|
pid = os.wait()[0]
|
|
try:
|
|
self._load_suppressions(pid2filename[pid])
|
|
finally:
|
|
del pid2filename[pid]
|
|
fd, tmpfilename = mkstemp()
|
|
os.close(fd)
|
|
pid = os.fork()
|
|
if pid:
|
|
pid2filename[pid] = tmpfilename
|
|
else:
|
|
signal.signal(signal.SIGTERM, signal.SIG_DFL)
|
|
patcher.monkey_patch(all=False, socket=True)
|
|
self.no_changes = 0
|
|
self.successes = 0
|
|
self.failures = 0
|
|
self.new_account_suppressions = open(tmpfilename, 'w')
|
|
forkbegin = time.time()
|
|
self.container_sweep(path)
|
|
elapsed = time.time() - forkbegin
|
|
self.logger.debug(
|
|
_('Container update sweep of %(path)s completed: '
|
|
'%(elapsed).02fs, %(success)s successes, %(fail)s '
|
|
'failures, %(no_change)s with no changes'),
|
|
{'path': path, 'elapsed': elapsed,
|
|
'success': self.successes, 'fail': self.failures,
|
|
'no_change': self.no_changes})
|
|
sys.exit()
|
|
while pid2filename:
|
|
pid = os.wait()[0]
|
|
try:
|
|
self._load_suppressions(pid2filename[pid])
|
|
finally:
|
|
del pid2filename[pid]
|
|
elapsed = time.time() - begin
|
|
self.logger.info(_('Container update sweep completed: %.02fs'),
|
|
elapsed)
|
|
dump_recon_cache({'container_updater_sweep': elapsed},
|
|
self.rcache, self.logger)
|
|
if elapsed < self.interval:
|
|
time.sleep(self.interval - elapsed)
|
|
|
|
def run_once(self, *args, **kwargs):
|
|
"""
|
|
Run the updater once.
|
|
"""
|
|
patcher.monkey_patch(all=False, socket=True)
|
|
self.logger.info(_('Begin container update single threaded sweep'))
|
|
begin = time.time()
|
|
self.no_changes = 0
|
|
self.successes = 0
|
|
self.failures = 0
|
|
for path in self.get_paths():
|
|
self.container_sweep(path)
|
|
elapsed = time.time() - begin
|
|
self.logger.info(_(
|
|
'Container update single threaded sweep completed: '
|
|
'%(elapsed).02fs, %(success)s successes, %(fail)s failures, '
|
|
'%(no_change)s with no changes'),
|
|
{'elapsed': elapsed, 'success': self.successes,
|
|
'fail': self.failures, 'no_change': self.no_changes})
|
|
dump_recon_cache({'container_updater_sweep': elapsed},
|
|
self.rcache, self.logger)
|
|
|
|
def container_sweep(self, path):
|
|
"""
|
|
Walk the path looking for container DBs and process them.
|
|
|
|
:param path: path to walk
|
|
"""
|
|
for root, dirs, files in os.walk(path):
|
|
for file in files:
|
|
if file.endswith('.db'):
|
|
self.process_container(os.path.join(root, file))
|
|
time.sleep(self.slowdown)
|
|
|
|
def process_container(self, dbfile):
|
|
"""
|
|
Process a container, and update the information in the account.
|
|
|
|
:param dbfile: container DB to process
|
|
"""
|
|
start_time = time.time()
|
|
broker = ContainerBroker(dbfile, logger=self.logger)
|
|
info = broker.get_info()
|
|
# Don't send updates if the container was auto-created since it
|
|
# definitely doesn't have up to date statistics.
|
|
if float(info['put_timestamp']) <= 0:
|
|
return
|
|
if self.account_suppressions.get(info['account'], 0) > time.time():
|
|
return
|
|
if info['put_timestamp'] > info['reported_put_timestamp'] or \
|
|
info['delete_timestamp'] > info['reported_delete_timestamp'] \
|
|
or info['object_count'] != info['reported_object_count'] or \
|
|
info['bytes_used'] != info['reported_bytes_used']:
|
|
container = '/%s/%s' % (info['account'], info['container'])
|
|
part, nodes = self.get_account_ring().get_nodes(info['account'])
|
|
events = [spawn(self.container_report, node, part, container,
|
|
info['put_timestamp'], info['delete_timestamp'],
|
|
info['object_count'], info['bytes_used'])
|
|
for node in nodes]
|
|
successes = 0
|
|
failures = 0
|
|
for event in events:
|
|
if is_success(event.wait()):
|
|
successes += 1
|
|
else:
|
|
failures += 1
|
|
if successes > failures:
|
|
self.logger.increment('successes')
|
|
self.successes += 1
|
|
self.logger.debug(
|
|
_('Update report sent for %(container)s %(dbfile)s'),
|
|
{'container': container, 'dbfile': dbfile})
|
|
broker.reported(info['put_timestamp'],
|
|
info['delete_timestamp'], info['object_count'],
|
|
info['bytes_used'])
|
|
else:
|
|
self.logger.increment('failures')
|
|
self.failures += 1
|
|
self.logger.debug(
|
|
_('Update report failed for %(container)s %(dbfile)s'),
|
|
{'container': container, 'dbfile': dbfile})
|
|
self.account_suppressions[info['account']] = until = \
|
|
time.time() + self.account_suppression_time
|
|
if self.new_account_suppressions:
|
|
print >>self.new_account_suppressions, \
|
|
info['account'], until
|
|
# Only track timing data for attempted updates:
|
|
self.logger.timing_since('timing', start_time)
|
|
else:
|
|
self.logger.increment('no_changes')
|
|
self.no_changes += 1
|
|
|
|
def container_report(self, node, part, container, put_timestamp,
|
|
delete_timestamp, count, bytes):
|
|
"""
|
|
Report container info to an account server.
|
|
|
|
:param node: node dictionary from the account ring
|
|
:param part: partition the account is on
|
|
:param container: container name
|
|
:param put_timestamp: put timestamp
|
|
:param delete_timestamp: delete timestamp
|
|
:param count: object count in the container
|
|
:param bytes: bytes used in the container
|
|
"""
|
|
with ConnectionTimeout(self.conn_timeout):
|
|
try:
|
|
conn = http_connect(
|
|
node['ip'], node['port'], node['device'], part,
|
|
'PUT', container,
|
|
headers={'X-Put-Timestamp': put_timestamp,
|
|
'X-Delete-Timestamp': delete_timestamp,
|
|
'X-Object-Count': count,
|
|
'X-Bytes-Used': bytes,
|
|
'X-Account-Override-Deleted': 'yes'})
|
|
except (Exception, Timeout):
|
|
self.logger.exception(_(
|
|
'ERROR account update failed with '
|
|
'%(ip)s:%(port)s/%(device)s (will retry later): '), node)
|
|
return HTTP_INTERNAL_SERVER_ERROR
|
|
with Timeout(self.node_timeout):
|
|
try:
|
|
resp = conn.getresponse()
|
|
resp.read()
|
|
return resp.status
|
|
except (Exception, Timeout):
|
|
if self.logger.getEffectiveLevel() <= logging.DEBUG:
|
|
self.logger.exception(
|
|
_('Exception with %(ip)s:%(port)s/%(device)s'), node)
|
|
return HTTP_INTERNAL_SERVER_ERROR
|