remove oslo-incubator's memorycache

with middleware removed from keystoneclient we no longer need
to keep memorycache around.

Change-Id: I98d8ddd1398699f8821e4c36fe911c9d211c46a9
Related-Bug: #1449066

keystoneclient/openstack/common/memorycache.py

@@ -1,103 +0,0 @@
-# Copyright 2010 United States Government as represented by the
-# Administrator of the National Aeronautics and Space Administration.
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-"""Super simple fake memcache client."""
-
-import copy
-
-from debtcollector import removals
-from oslo_config import cfg
-from oslo_utils import timeutils
-
-memcache_opts = [
-    cfg.ListOpt('memcached_servers',
-                help='Memcached servers or None for in process cache.'),
-]
-
-CONF = cfg.CONF
-CONF.register_opts(memcache_opts)
-
-
-# Indicate that this module is deprecated for removal and oslo.cache should
-# be used instead.
-removals.removed_module(__name__, 'oslo.cache')
-
-
-def list_opts():
-    """Entry point for oslo-config-generator."""
-    return [(None, copy.deepcopy(memcache_opts))]
-
-
-def get_client(memcached_servers=None):
-    client_cls = Client
-
-    if not memcached_servers:
-        memcached_servers = CONF.memcached_servers
-    if memcached_servers:
-        import memcache
-        client_cls = memcache.Client
-
-    return client_cls(memcached_servers, debug=0)
-
-
-class Client(object):
-    """Replicates a tiny subset of memcached client interface."""
-
-    def __init__(self, *args, **kwargs):
-        """Ignores the passed in args."""
-        self.cache = {}
-
-    def get(self, key):
-        """Retrieves the value for a key or None.
-
-        This expunges expired keys during each get.
-        """
-
-        now = timeutils.utcnow_ts()
-        for k in list(self.cache):
-            (timeout, _value) = self.cache[k]
-            if timeout and now >= timeout:
-                del self.cache[k]
-
-        return self.cache.get(key, (0, None))[1]
-
-    def set(self, key, value, time=0, min_compress_len=0):
-        """Sets the value for a key."""
-        timeout = 0
-        if time != 0:
-            timeout = timeutils.utcnow_ts() + time
-        self.cache[key] = (timeout, value)
-        return True
-
-    def add(self, key, value, time=0, min_compress_len=0):
-        """Sets the value for a key if it doesn't exist."""
-        if self.get(key) is not None:
-            return False
-        return self.set(key, value, time, min_compress_len)
-
-    def incr(self, key, delta=1):
-        """Increments the value for a key."""
-        value = self.get(key)
-        if value is None:
-            return None
-        new_value = int(value) + delta
-        self.cache[key] = (self.cache[key][0], str(new_value))
-        return new_value
-
-    def delete(self, key, time=0):
-        """Deletes the value associated with a key."""
-        if key in self.cache:
-            del self.cache[key]

openstack-common.conf

@@ -3,7 +3,6 @@
 # The list of modules to copy from oslo-incubator
 module=apiclient
 module=install_venv_common
-module=memorycache
 
 # The base module to hold the copy of openstack.common
 base=keystoneclient