Let zake act as a in-memory fully functional driver

The zake driver should theoretically function the same as the
non-local driver so all the same kazoo functions should work,
without the whole distributed part as they work with the regular
zookeeper backed kazoo driver.

Change-Id: I19df0da0e58c5624ca1b10f61c42510f1f104847

requirements.txt

@@ -6,6 +6,7 @@ iso8601
 kazoo>=1.3.1
 oslo.config
 pymemcache>=1.2
+zake>=0.1.6
 posix_ipc
 msgpack-python
 retrying

test-requirements.txt

@@ -7,5 +7,4 @@ python-subunit
 testrepository>=0.0.17
 testtools>=0.9.32
 testscenarios>=0.4
-zake>=0.1
 coverage>=3.6

tooz/drivers/zake.py

@@ -17,11 +17,10 @@ from __future__ import absolute_import
 from zake import fake_client
 from zake import fake_storage
 
-import tooz
 from tooz.drivers import zookeeper
 
 
-class ZakeDriver(zookeeper.BaseZooKeeperDriver):
+class ZakeDriver(zookeeper.KazooDriver):
     """The driver using the Zake client which mimic a fake Kazoo client
     without the need of real ZooKeeper servers.
     """
@@ -30,34 +29,6 @@ class ZakeDriver(zookeeper.BaseZooKeeperDriver):
     fake_storage = fake_storage.FakeStorage(
         fake_client.k_threading.SequentialThreadingHandler())
 
-    def __init__(self, member_id, parsed_url, options):
-        super(ZakeDriver, self).__init__(member_id, parsed_url, options)
-        self._coord = fake_client.FakeClient(storage=self.fake_storage)
-
-    @staticmethod
-    def watch_join_group(group_id, callback):
-        raise tooz.NotImplemented
-
-    @staticmethod
-    def unwatch_join_group(group_id, callback):
-        raise tooz.NotImplemented
-
-    @staticmethod
-    def watch_leave_group(group_id, callback):
-        raise tooz.NotImplemented
-
-    @staticmethod
-    def unwatch_leave_group(group_id, callback):
-        raise tooz.NotImplemented
-
-    @staticmethod
-    def watch_elected_as_leader(group_id, callback):
-        raise tooz.NotImplemented
-
-    @staticmethod
-    def unwatch_elected_as_leader(group_id, callback):
-        raise tooz.NotImplemented
-
-    @staticmethod
-    def run_watchers():
-        raise tooz.NotImplemented
+    @classmethod
+    def _make_client(cls, parsed_url, options):
+        return fake_client.FakeClient(storage=cls.fake_storage)

tooz/drivers/zookeeper.py

@@ -207,9 +207,13 @@ class KazooDriver(BaseZooKeeperDriver):
 
     def __init__(self, member_id, parsed_url, options):
         super(KazooDriver, self).__init__(member_id, parsed_url, options)
-        self._coord = client.KazooClient(hosts=parsed_url.netloc)
+        self._coord = self._make_client(parsed_url, options)
         self._member_id = member_id
 
+    @classmethod
+    def _make_client(cls, parsed_url, options):
+        return client.KazooClient(hosts=parsed_url.netloc)
+
     def _watch_group(self, group_id):
         get_members_req = self.get_members(group_id)