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# (c) 2012, 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
HAVE_REDIS=False
try:
import redis # https://github.com/andymccurdy/redis-py/
HAVE_REDIS=True
except ImportError:
pass
import re
# ==============================================================
# REDISGET: Obtain value from a GET on a Redis key. Terms
# expected: 0 = URL, 1 = Key
# URL may be empty, in which case redis://localhost:6379 assumed
# --------------------------------------------------------------
class LookupModule(object):
def __init__(self, basedir=None, **kwargs):
self.basedir = basedir
if HAVE_REDIS == False:
raise errors.AnsibleError("Can't LOOKUP(redis_kv): module redis is not installed")
def run(self, terms, inject=None, **kwargs):
terms = utils.listify_lookup_plugin_terms(terms, self.basedir, inject)
ret = []
for term in terms:
(url,key) = term.split(',')
if url == "":
url = 'redis://localhost:6379'
# urlsplit on Python 2.6.1 is broken. Hmm. Probably also the reason
# Redis' from_url() doesn't work here.
p = '(?P<scheme>[^:]+)://?(?P<host>[^:/ ]+).?(?P<port>[0-9]*).*'
try:
m = re.search(p, url)
host = m.group('host')
port = int(m.group('port'))
except AttributeError:
raise errors.AnsibleError("Bad URI in redis lookup")
try:
conn = redis.Redis(host=host, port=port)
res = conn.get(key)
if res is None:
res = ""
ret.append(res)
except:
ret.append("") # connection failed or key not found
return ret
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