Remove deprecated "memcached_server" in Default section
The 'memcached_server' option in DEFAULT section which was deprecated in Mitaka has been completely removed in Newton. This has been replaced by options from oslo cache section. Change-Id: I0b23fd65a04de6a35e8ce9efd1110caad63ad562
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Hieu LE
parent
80fa358e86
commit
505bc44615
@ -4,7 +4,6 @@ wrap_width = 79
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namespace = nova
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namespace = nova.conf
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namespace = nova.api
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namespace = nova.cache_utils
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namespace = nova.cells
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namespace = nova.compute
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namespace = nova.network
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@ -16,87 +16,34 @@
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"""Super simple fake memcache client."""
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import copy
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from oslo_cache import core as cache
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from oslo_config import cfg
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from nova.i18n import _
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# NOTE(dims): There are many copies of memcache_opts with memcached_servers
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# in various projects as this used to be in a copy of memory_cache.py
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# Since we are making a change in just our copy, oslo-config-generator fails
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# with cfg.DuplicateOptError unless we override the comparison check
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class _DeprecatedListOpt(cfg.ListOpt):
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def __ne__(self, another):
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self_dict = copy.deepcopy(vars(self))
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another_dict = copy.deepcopy(vars(another))
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self_dict.pop('help')
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self_dict.pop('deprecated_for_removal')
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another_dict.pop('help')
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another_dict.pop('deprecated_for_removal')
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return self_dict != another_dict
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memcache_opts = [
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_DeprecatedListOpt('memcached_servers',
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help='DEPRECATED: Memcached servers or None for in '
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'process cache. "memcached_servers" opt is '
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'deprecated in Mitaka. In Newton release '
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'oslo.cache config options should be used as '
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'this option will be removed. Please add a '
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'[cache] group in your nova.conf file and '
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'add "enable" and "memcache_servers" option in '
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'this section.',
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deprecated_for_removal=True),
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]
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CONF = cfg.CONF
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CONF.register_opts(memcache_opts)
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WEEK = 604800
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def list_opts():
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"""Entry point for oslo-config-generator."""
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return [(None, copy.deepcopy(memcache_opts))]
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def get_memcached_client(expiration_time=0):
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"""Used ONLY when memcached is explicitly needed."""
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# If the operator uses the old style [DEFAULT]/memcached_servers
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# then we just respect that setting
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if CONF.memcached_servers:
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return CacheClient(
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_get_custom_cache_region(expiration_time=expiration_time,
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backend='dogpile.cache.memcached',
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url=CONF.memcached_servers))
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# If the operator still uses the new style [cache]/memcache_servers
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# and has [cache]/enabled flag on then we let oslo_cache configure
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# the region from the configuration settings
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elif CONF.cache.enabled and CONF.cache.memcache_servers:
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# If the operator has [cache]/enabled flag on then we let oslo_cache
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# configure the region from the configuration settings
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if CONF.cache.enabled and CONF.cache.memcache_servers:
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return CacheClient(
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_get_default_cache_region(expiration_time=expiration_time))
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raise RuntimeError(_('memcached_servers not defined'))
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def get_client(expiration_time=0):
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"""Used to get a caching client."""
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# If the operator still uses the old style [DEFAULT]/memcached_servers
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# then we just respect that setting
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if CONF.memcached_servers:
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return CacheClient(
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_get_custom_cache_region(expiration_time=expiration_time,
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backend='dogpile.cache.memcached',
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url=CONF.memcached_servers))
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# If the operator has [cache]/enabled flag on then we let oslo_cache
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# configure the region from configuration settings.
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elif CONF.cache.enabled:
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if CONF.cache.enabled:
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return CacheClient(
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_get_default_cache_region(expiration_time=expiration_time))
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# If [cache]/enabled flag is off and [DEFAULT]/memcached_servers is
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# absent we use the dictionary backend
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# If [cache]/enabled flag is off, we use the dictionary backend
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return CacheClient(
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_get_custom_cache_region(expiration_time=expiration_time,
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backend='oslo_cache.dict'))
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@ -28,8 +28,7 @@ class MemcachedServiceGroupTestCase(test.NoDBTestCase):
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super(MemcachedServiceGroupTestCase, self).setUp()
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self.mc_client = mock.MagicMock()
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mgc_mock.return_value = self.mc_client
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self.flags(memcached_servers='ignored',
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servicegroup_driver='mc')
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self.flags(servicegroup_driver='mc')
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self.servicegroup_api = servicegroup.API()
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def test_is_up(self):
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@ -33,16 +33,10 @@ class TestOsloCache(test.NoDBTestCase):
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self.assertIsNotNone(
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cache_utils.get_client(expiration_time=60))
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self.flags(memcached_servers=['localhost:11211'])
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self.assertIsNotNone(
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cache_utils.get_client(expiration_time=60))
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self.flags(memcached_servers=None)
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self.flags(group='cache', enabled=True)
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self.assertIsNotNone(
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cache_utils.get_client(expiration_time=60))
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self.flags(memcached_servers=None)
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self.flags(group='cache', enabled=False)
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client = cache_utils.get_client(expiration_time=60)
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self.assertIsNotNone(client.region)
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@ -51,9 +45,6 @@ class TestOsloCache(test.NoDBTestCase):
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[mock.call('oslo_cache.dict',
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arguments={'expiration_time': 60},
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expiration_time=60),
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mock.call('dogpile.cache.memcached',
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arguments={'url': ['localhost:11211']},
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expiration_time=60),
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mock.call('dogpile.cache.null',
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_config_argument_dict=mock.ANY,
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_config_prefix='cache.oslo.arguments.',
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@ -86,35 +77,13 @@ class TestOsloCache(test.NoDBTestCase):
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@mock.patch('dogpile.cache.region.CacheRegion.configure')
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def test_get_memcached_client(self, mock_cacheregion):
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self.flags(memcached_servers=None)
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self.flags(group='cache', enabled=False)
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self.assertRaises(
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RuntimeError,
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cache_utils.get_memcached_client,
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expiration_time=60)
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self.flags(memcached_servers=['localhost:11211'])
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self.assertIsNotNone(
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cache_utils.get_memcached_client(expiration_time=60))
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self.flags(memcached_servers=['localhost:11211'])
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self.assertIsNotNone(
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cache_utils.get_memcached_client(expiration_time=60))
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self.flags(memcached_servers=None)
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self.flags(group='cache', enabled=True)
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self.flags(group='cache', memcache_servers=['localhost:11211'])
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self.assertIsNotNone(
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cache_utils.get_memcached_client(expiration_time=60))
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mock_cacheregion.assert_has_calls(
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[mock.call('dogpile.cache.memcached',
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arguments={'url': ['localhost:11211']},
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expiration_time=60),
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mock.call('dogpile.cache.memcached',
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arguments={'url': ['localhost:11211']},
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expiration_time=60),
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mock.call('dogpile.cache.null',
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[mock.call('dogpile.cache.null',
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_config_argument_dict=mock.ANY,
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_config_prefix='cache.oslo.arguments.',
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expiration_time=60, wrap=None)]
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@ -0,0 +1,5 @@
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---
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upgrade:
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- The 'memcached_server' option in DEFAULT section which was deprecated in
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Mitaka has been completely removed in Newton. This has been replaced by
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options from oslo cache section.
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