root / lib / cmdlib / common.py @ 1a732a74
History | View | Annotate | Download (1.6 kB)
1 |
#
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Google Inc.
|
5 |
#
|
6 |
# This program is free software; you can redistribute it and/or modify
|
7 |
# it under the terms of the GNU General Public License as published by
|
8 |
# the Free Software Foundation; either version 2 of the License, or
|
9 |
# (at your option) any later version.
|
10 |
#
|
11 |
# This program is distributed in the hope that it will be useful, but
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
# General Public License for more details.
|
15 |
#
|
16 |
# You should have received a copy of the GNU General Public License
|
17 |
# along with this program; if not, write to the Free Software
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
# 02110-1301, USA.
|
20 |
|
21 |
|
22 |
"""Common functions used by multiple logical units."""
|
23 |
|
24 |
from ganeti import errors |
25 |
|
26 |
|
27 |
def _ExpandItemName(fn, name, kind): |
28 |
"""Expand an item name.
|
29 |
|
30 |
@param fn: the function to use for expansion
|
31 |
@param name: requested item name
|
32 |
@param kind: text description ('Node' or 'Instance')
|
33 |
@return: the resolved (full) name
|
34 |
@raise errors.OpPrereqError: if the item is not found
|
35 |
|
36 |
"""
|
37 |
full_name = fn(name) |
38 |
if full_name is None: |
39 |
raise errors.OpPrereqError("%s '%s' not known" % (kind, name), |
40 |
errors.ECODE_NOENT) |
41 |
return full_name
|
42 |
|
43 |
|
44 |
def _ExpandInstanceName(cfg, name): |
45 |
"""Wrapper over L{_ExpandItemName} for instance."""
|
46 |
return _ExpandItemName(cfg.ExpandInstanceName, name, "Instance") |
47 |
|
48 |
|
49 |
def _ExpandNodeName(cfg, name): |
50 |
"""Wrapper over L{_ExpandItemName} for nodes."""
|
51 |
return _ExpandItemName(cfg.ExpandNodeName, name, "Node") |