Making the switch to v2

lib/ansible/plugins/lookup/redis_kv.py

@@ -0,0 +1,75 @@
+# (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 __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import os
+import re
+
+HAVE_REDIS=False
+try:
+    import redis        # https://github.com/andymccurdy/redis-py/
+    HAVE_REDIS=True
+except ImportError:
+    pass
+
+from ansible.errors import AnsibleError
+from ansible.plugins.lookup import LookupBase
+
+# ==============================================================
+# 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(LookupBase):
+
+    def run(self, terms, variables, **kwargs):
+
+        if not HAVE_REDIS:
+            raise AnsibleError("Can't LOOKUP(redis_kv): module redis is not installed")
+
+        if not isinstance(terms, list):
+            terms = [ terms ]
+
+        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 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