Refactor python library to unify and rename as cdb_services

server/lib/python/cartodb_services/cartodb_services/tools/__init__.py

@@ -0,0 +1 @@
+from redis_tools import RedisConnection

server/lib/python/cartodb_services/cartodb_services/tools/redis_tools.py

@@ -0,0 +1,29 @@
+from redis.sentinel import Sentinel
+
+
+class RedisConnection:
+
+    REDIS_DEFAULT_USER_DB = 5
+    REDIS_DEFAULT_TIMEOUT = 2  #seconds
+    REDIS_SENTINEL_DEFAULT_PORT = 26379
+
+    def __init__(self, sentinel_host, sentinel_port, sentinel_master_id,
+                 redis_db=REDIS_DEFAULT_USER_DB, **kwargs):
+        self.sentinel_host = sentinel_host
+        self.sentinel_port = sentinel_port
+        self.sentinel_master_id = sentinel_master_id
+        self.timeout = kwargs['timeout'] if 'timeout' in kwargs else self.REDIS_DEFAULT_TIMEOUT
+        self.redis_db = redis_db
+
+    def redis_connection(self):
+        return self.__create_redis_connection()
+
+    def __create_redis_connection(self):
+        sentinel = Sentinel([(self.sentinel_host,
+                              self.REDIS_SENTINEL_DEFAULT_PORT)],
+                            socket_timeout=self.timeout)
+        return sentinel.master_for(
+            self.sentinel_master_id,
+            socket_timeout=self.timeout,
+            db=self.redis_db
+        )