#!/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 import os from optparse import OptionParser from swift.common.ring import Ring from swift.cli.info import print_item_locations, InfoSystemExit if __name__ == '__main__': usage = ''' Shows the nodes responsible for the item specified. Usage: %prog [-a] [] [] Or: %prog [-a] -p partition Or: %prog [-a] -P policy_name 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') options, args = parser.parse_args() # swift-get-nodes -P nada -p 1 if len(args) == 0: if not options.policy_name or not options.partition: sys.exit(parser.print_help()) elif len(args) > 4 or len(args) < 1: sys.exit(parser.print_help()) # Parse single path arg, as noted in above help text. # if len(args) == 1 and options.policy_name and '/' in args[0]: if len(args) == 1 and not args[0].endswith('ring.gz'): path = args[0].lstrip('/') args = [p for p in path.split('/', 2) if p] if len(args) == 2 and '/' in args[1]: path = args[1].lstrip('/') args = [args[0]] + [p for p in path.split('/', 2) if p] ring = None ring_name = None if len(args) >= 1 and args[0].endswith('ring.gz'): if os.path.exists(args[0]): ring_name = args[0].rsplit('/', 1)[-1].split('.', 1)[0] ring = Ring(args[0]) else: print 'Ring file does not exist' args.pop(0) try: print_item_locations(ring, ring_name, *args, **vars(options)) except InfoSystemExit: sys.exit(1)