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swift /bin /swift-dispersion-populate

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#!/usr/bin/env python
# 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.
from __future__ import print_function
import io
import traceback
from optparse import OptionParser
from sys import exit, stdout
from time import time
from eventlet import GreenPool, patcher, sleep
from eventlet.pools import Pool
import six
from six.moves import range
from six.moves.configparser import ConfigParser
try:
from swiftclient import get_auth
except ImportError:
from swift.common.internal_client import get_auth
from swift.common.internal_client import SimpleClient
from swift.common.ring import Ring
from swift.common.utils import compute_eta, get_time_units, config_true_value
from swift.common.storage_policy import POLICIES
insecure = False
def put_container(connpool, container, report, headers):
global retries_done
try:
with connpool.item() as conn:
conn.put_container(container, headers=headers)
retries_done += conn.attempts - 1
if report:
report(True)
except Exception:
if report:
report(False)
raise
def put_object(connpool, container, obj, report):
global retries_done
try:
with connpool.item() as conn:
data = io.BytesIO(obj if six.PY2 else obj.encode('utf8'))
conn.put_object(container, obj, data,
headers={'x-object-meta-dispersion': obj})
retries_done += conn.attempts - 1
if report:
report(True)
except Exception:
if report:
report(False)
raise
def report(success):
global begun, created, item_type, next_report, need_to_create, retries_done
if not success:
traceback.print_exc()
exit('Gave up due to error(s).')
created += 1
if time() < next_report:
return
next_report = time() + 5
eta, eta_unit = compute_eta(begun, created, need_to_create)
print('\r\x1B[KCreating %s: %d of %d, %d%s left, %d retries'
% (item_type, created, need_to_create, round(eta), eta_unit,
retries_done), end='')
stdout.flush()
if __name__ == '__main__':
global begun, created, item_type, next_report, need_to_create, retries_done
patcher.monkey_patch()
conffile = '/etc/swift/dispersion.conf'
parser = OptionParser(usage='''
Usage: %%prog [options] [conf_file]
[conf_file] defaults to %s'''.strip() % conffile)
parser.add_option('--container-only', action='store_true', default=False,
help='Only run container population')
parser.add_option('--object-only', action='store_true', default=False,
help='Only run object population')
parser.add_option('--container-suffix-start', type=int, default=0,
help='container suffix start value, defaults to 0')
parser.add_option('--object-suffix-start', type=int, default=0,
help='object suffix start value, defaults to 0')
parser.add_option('--insecure', action='store_true', default=False,
help='Allow accessing insecure keystone server. '
'The keystone\'s certificate will not be verified.')
parser.add_option('--no-overlap', action='store_true', default=False,
help="No overlap of partitions if running populate \
more than once. Will increase coverage by amount shown \
in dispersion.conf file")
parser.add_option('-P', '--policy-name', dest='policy_name',
help="Specify storage policy name")
options, args = parser.parse_args()
if args:
conffile = args.pop(0)
c = ConfigParser()
if not c.read(conffile):
exit('Unable to read config file: %s' % conffile)
conf = dict(c.items('dispersion'))
if options.policy_name is None:
policy = POLICIES.default
else:
policy = POLICIES.get_by_name(options.policy_name)
if policy is None:
exit('Unable to find policy: %s' % options.policy_name)
print('Using storage policy: %s ' % policy.name)
swift_dir = conf.get('swift_dir', '/etc/swift')
dispersion_coverage = float(conf.get('dispersion_coverage', 1))
retries = int(conf.get('retries', 5))
concurrency = int(conf.get('concurrency', 25))
endpoint_type = str(conf.get('endpoint_type', 'publicURL'))
region_name = str(conf.get('region_name', ''))
user_domain_name = str(conf.get('user_domain_name', ''))
project_domain_name = str(conf.get('project_domain_name', ''))
project_name = str(conf.get('project_name', ''))
insecure = options.insecure \
or config_true_value(conf.get('keystone_api_insecure', 'no'))
container_populate = config_true_value(
conf.get('container_populate', 'yes')) and not options.object_only
object_populate = config_true_value(
conf.get('object_populate', 'yes')) and not options.container_only
if not (object_populate or container_populate):
exit("Neither container or object populate is set to run")
coropool = GreenPool(size=concurrency)
retries_done = 0
os_options = {'endpoint_type': endpoint_type}
if user_domain_name:
os_options['user_domain_name'] = user_domain_name
if project_domain_name:
os_options['project_domain_name'] = project_domain_name
if project_name:
os_options['project_name'] = project_name
if region_name:
os_options['region_name'] = region_name
url, token = get_auth(conf['auth_url'], conf['auth_user'],
conf['auth_key'],
auth_version=conf.get('auth_version', '1.0'),
os_options=os_options,
insecure=insecure)
account = url.rsplit('/', 1)[1]
connpool = Pool(max_size=concurrency)
headers = {}
headers['X-Storage-Policy'] = policy.name
connpool.create = lambda: SimpleClient(
url=url, token=token, retries=retries)
if container_populate:
container_ring = Ring(swift_dir, ring_name='container')
parts_left = dict((x, x)
for x in range(container_ring.partition_count))
if options.no_overlap:
with connpool.item() as conn:
containers = [cont['name'] for cont in conn.get_account(
prefix='dispersion_%d' % policy.idx, full_listing=True)[1]]
containers_listed = len(containers)
if containers_listed > 0:
for container in containers:
partition, _junk = container_ring.get_nodes(account,
container)
if partition in parts_left:
del parts_left[partition]
item_type = 'containers'
created = 0
retries_done = 0
need_to_create = need_to_queue = \
dispersion_coverage / 100.0 * container_ring.partition_count
begun = next_report = time()
next_report += 2
suffix = 0
while need_to_queue >= 1 and parts_left:
container = 'dispersion_%d_%d' % (policy.idx, suffix)
part = container_ring.get_part(account, container)
if part in parts_left:
if suffix >= options.container_suffix_start:
coropool.spawn(put_container, connpool, container, report,
headers)
sleep()
else:
report(True)
del parts_left[part]
need_to_queue -= 1
suffix += 1
coropool.waitall()
elapsed, elapsed_unit = get_time_units(time() - begun)
print('\r\x1B[KCreated %d containers for dispersion reporting, '
'%d%s, %d retries' %
((need_to_create - need_to_queue), round(elapsed), elapsed_unit,
retries_done))
if options.no_overlap:
con_coverage = container_ring.partition_count - len(parts_left)
print('\r\x1B[KTotal container coverage is now %.2f%%.' %
((float(con_coverage) / container_ring.partition_count
* 100)))
stdout.flush()
if object_populate:
container = 'dispersion_objects_%d' % policy.idx
put_container(connpool, container, None, headers)
object_ring = Ring(swift_dir, ring_name=policy.ring_name)
parts_left = dict((x, x) for x in range(object_ring.partition_count))
if options.no_overlap:
with connpool.item() as conn:
obj_container = [cont_b['name'] for cont_b in conn.get_account(
prefix=container, full_listing=True)[1]]
if obj_container:
with connpool.item() as conn:
objects = [o['name'] for o in
conn.get_container(container,
prefix='dispersion_',
full_listing=True)[1]]
for my_object in objects:
partition = object_ring.get_part(account, container,
my_object)
if partition in parts_left:
del parts_left[partition]
item_type = 'objects'
created = 0
retries_done = 0
need_to_create = need_to_queue = \
dispersion_coverage / 100.0 * object_ring.partition_count
begun = next_report = time()
next_report += 2
suffix = 0
while need_to_queue >= 1 and parts_left:
obj = 'dispersion_%d' % suffix
part = object_ring.get_part(account, container, obj)
if part in parts_left:
if suffix >= options.object_suffix_start:
coropool.spawn(
put_object, connpool, container, obj, report)
sleep()
else:
report(True)
del parts_left[part]
need_to_queue -= 1
suffix += 1
coropool.waitall()
elapsed, elapsed_unit = get_time_units(time() - begun)
print('\r\x1B[KCreated %d objects for dispersion reporting, '
'%d%s, %d retries' %
((need_to_create - need_to_queue), round(elapsed), elapsed_unit,
retries_done))
if options.no_overlap:
obj_coverage = object_ring.partition_count - len(parts_left)
print('\r\x1B[KTotal object coverage is now %.2f%%.' %
((float(obj_coverage) / object_ring.partition_count * 100)))
stdout.flush()