#!/usr/bin/env 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 sys
import urllib

from swift.common.ring import Ring
from swift.common.utils import hash_path


if len(sys.argv) < 3 or len(sys.argv) > 5:
    print 'Usage: %s <ring.gz> <account> [<container>] [<object>]' \
      % sys.argv[0]
    print 'Shows the nodes responsible for the item specified.'
    print 'Example:'
    print '    $ %s /etc/swift/account.ring.gz MyAccount' % sys.argv[0]
    print '    Partition 5743883'
    print '    Hash 96ae332a60b58910784e4417a03e1ad0'
    print '    10.1.1.7:8000 sdd1'
    print '    10.1.9.2:8000 sdb1'
    print '    10.1.5.5:8000 sdf1'
    print '    10.1.5.9:8000 sdt1 # [Handoff]'
    sys.exit(1)

ringloc = None
account = None
container = None
obj = None

if len(sys.argv) > 4:
    # Acount, Container and Object
    ring, account, container, obj = sys.argv[1:5]
    hash_str = hash_path(account, container, obj)
    part, nodes = Ring(ring).get_nodes(account, container, obj)
    target = "%s/%s/%s" % (account, container, obj)
    loc = 'objects'
elif len(sys.argv) > 3:
    # Account, Container
    ring, account, container = sys.argv[1:4]
    hash_str = hash_path(account, container)
    part, nodes = Ring(ring).get_nodes(account, container)
    target = "%s/%s" % (account, container)
    loc = 'containers'
elif len(sys.argv) > 2:
    # Account
    ring, account = sys.argv[1:3]
    hash_str = hash_path(account)
    part, nodes = Ring(ring).get_nodes(account)
    target = "%s" % (account)
    loc = 'accounts'

more_nodes = list(Ring(ring).get_more_nodes(part))

print '\nAccount \t%s' % account
print 'Container\t%s' % container
print 'Object   \t%s\n' % obj
print '\nPartition\t%s' % part
print 'Hash       \t%s\n' % hash_str

for node in nodes:
    print 'Server:Port Device\t%s:%s %s' % (node['ip'], node['port'],
        node['device'])
for mnode in more_nodes:
    print 'Server:Port Device\t%s:%s %s\t [Handoff]' \
        % (mnode['ip'], mnode['port'], mnode['device'])
print "\n"
for node in nodes:
    print 'curl -I -XHEAD "http://%s:%s/%s/%s/%s"' \
        % (node['ip'], node['port'], node['device'], part,
        urllib.quote(target))
for mnode in more_nodes:
    print 'curl -I -XHEAD "http://%s:%s/%s/%s/%s" # [Handoff]' \
        % (mnode['ip'], mnode['port'], mnode['device'], part,
        urllib.quote(target))
print "\n"
for node in nodes:
    print 'ssh %s "ls -lah /srv/node/%s/%s/%s/%s/%s/"' \
        % (node['ip'], node['device'], loc, part, hash_str[-3:], hash_str)
for mnode in more_nodes:
    print 'ssh %s "ls -lah /srv/node/%s/%s/%s/%s/%s/" # [Handoff]' \
        % (mnode['ip'], mnode['device'], loc, part, hash_str[-3:], hash_str)