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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.
import sys
from optparse import OptionParser
from os.path import basename
from swift.common.ring import Ring
from swift.common.storage_policy import reload_storage_policies
from swift.common.utils import set_swift_dir
from swift.cli.info import (parse_get_node_args, print_item_locations,
InfoSystemExit)
if __name__ == '__main__':
usage = '''
Shows the nodes responsible for the item specified.
Usage: %prog [-a] <ring.gz> <account> [<container> [<object>]]
Or: %prog [-a] <ring.gz> -p partition
Or: %prog [-a] -P policy_name <account> [<container> [<object>]]
Or: %prog [-a] -P policy_name -p partition
Note: account, container, object can also be a single arg separated by /
Example:
$ %prog -a /etc/swift/account.ring.gz MyAccount
Partition 5743883
Hash 96ae332a60b58910784e4417a03e1ad0
10.1.1.7:8000 sdd1
10.1.9.2:8000 sdb1
10.1.5.5:8000 sdf1
10.1.5.9:8000 sdt1 # [Handoff]
'''
parser = OptionParser(usage)
parser.add_option('-a', '--all', action='store_true',
help='Show all handoff nodes')
parser.add_option('-p', '--partition', metavar='PARTITION',
help='Show nodes for a given partition')
parser.add_option('-P', '--policy-name', dest='policy_name',
help='Specify which policy to use')
parser.add_option('-d', '--swift-dir', default='/etc/swift',
dest='swift_dir', help='Path to swift directory')
parser.add_option('-Q', '--quoted', action='store_true',
help='Assume swift paths are quoted')
options, args = parser.parse_args()
if set_swift_dir(options.swift_dir):
reload_storage_policies()
try:
ring_path, args = parse_get_node_args(options, args)
except InfoSystemExit as e:
parser.print_help()
sys.exit('ERROR: %s' % e)
ring = ring_name = None
if ring_path:
ring_name = basename(ring_path)[:-len('.ring.gz')]
ring = Ring(ring_path)
try:
print_item_locations(ring, ring_name, *args, **vars(options))
except InfoSystemExit:
sys.exit(1)
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