3 # Copyright (C) 2011-2013 GRNET S.A.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 A tool that connects to the Pithos backend and returns the size and contents
24 Since the backend does not have a "root" account we use the account given in
25 the URL as the user when connecting to the backend.
28 from optparse import OptionParser
29 from sys import exit, stdout, stderr
30 from os import environ
31 from binascii import hexlify, unhexlify
32 from collections import namedtuple
35 from pithos.backends.modular import ModularBackend
37 stderr.write("Pithos backend was not found.\n")
41 parser = OptionParser(usage='%prog [options] <URL>')
42 parser.add_option('--db', dest='db', metavar='URI',
43 help='SQLAlchemy URI of the database [REQUIRED]')
44 parser.add_option('--data', dest='data', metavar='DIR',
45 help='path to the directory where data are'
47 parser.add_option('-s', action='store_true', dest='size', default=False,
48 help='print file size and exit')
50 LocationURL = namedtuple('LocationURL', ['account', 'container', 'object'])
51 HashmapURL = namedtuple('HashmapURL', ['hash', 'size'])
55 if url.startswith('pithos://'):
57 assert len(t) == 5, "Invalid URL"
58 return LocationURL(*t[2:5])
59 elif url.startswith('pithosmap://'):
61 assert len(t) == 4, "Invalid URL"
62 return HashmapURL(*t[2:4])
64 raise Exception("Invalid URL")
67 def print_size(backend, url):
68 """Writes object's size to stdout."""
69 if type(url) is LocationURL:
70 account, container, object = url
71 meta = backend.get_object_meta(account, account, container, object,
74 elif type(url) is HashmapURL:
77 raise Exception("Invalid URL")
80 def print_data(backend, url):
81 """Writes object's size to stdout."""
83 if type(url) is LocationURL:
84 account, container, object = url
85 size, hashmap = backend.get_object_hashmap(account, account, container,
87 elif type(url) is HashmapURL:
89 for x in backend.store.map_get(unhexlify(url.hash))]
92 raise Exception("Invalid URL")
95 block = backend.get_block(hash)
103 options, args = parser.parse_args()
108 url = parse_url(args[0])
110 if not options.data and 'PITHCAT_INPUT_DATA' not in environ:
111 stderr.write("Pithos data directory path is missing.\n")
114 data_path = environ['PITHCAT_INPUT_DATA'] if not options.data else \
117 if not options.db and 'PITHCAT_INPUT_DB' not in environ:
118 stderr.write("Pithos database uri is missing.\n")
121 db_uri = environ['PITHCAT_INPUT_DB'] if not options.db else options.db
123 backend = ModularBackend(None,
124 db_uri if type(url) is LocationURL
130 print_size(backend, url)
132 print_data(backend, url)
134 if __name__ == '__main__':