Merge pull request #4987 from jpmens/lookup-csvfile

New lookup plugin csvreader
This commit is contained in:
jctanner 2014-01-14 07:17:52 -08:00
commit 671b0454c6

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# (c) 2013, Jan-Piet Mens <jpmens(at)gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
from ansible import utils, errors
import os
import codecs
import csv
class LookupModule(object):
def __init__(self, basedir=None, **kwargs):
self.basedir = basedir
def read_csv(self, filename, key, delimiter, dflt=None, col=1):
try:
f = codecs.open(filename, 'r', encoding='utf-8')
creader = csv.reader(f, delimiter=delimiter)
for row in creader:
if row[0] == key:
return row[int(col)]
except Exception, e:
raise errors.AnsibleError("csvfile: %s" % str(e))
return dflt
def run(self, terms, inject=None, **kwargs):
terms = utils.listify_lookup_plugin_terms(terms, self.basedir, inject)
if isinstance(terms, basestring):
terms = [ terms ]
ret = []
for term in terms:
params = term.split()
key = params[0]
paramvals = {
'file' : 'ansible.csv',
'default' : None,
'delimiter' : "TAB",
'col' : "1", # column to return
}
# parameters specified?
try:
for param in params[1:]:
name, value = param.split('=')
assert(name in paramvals)
paramvals[name] = value
except (ValueError, AssertionError) as e:
raise errors.AnsibleError(e)
if paramvals['delimiter'] == 'TAB':
paramvals['delimiter'] = "\t"
path = utils.path_dwim(self.basedir, paramvals['file'])
var = self.read_csv(path, key, paramvals['delimiter'], paramvals['default'], paramvals['col'])
if var is not None:
if type(var) is list:
for v in var:
ret.append(v)
else:
ret.append(var)
return ret