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remove memcached based fact caching plugin
* AWX uses the JSON fact caching module that ships with Ansible
This commit is contained in:
chris meyers
parent
c6d6536078
commit
503b86d41c
@ -1,136 +0,0 @@
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# Copyright (c) 2015 Ansible, Inc.
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# This file is a utility Ansible plugin that is not part of the AWX or Ansible
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# packages. It does not import any code from either package, nor does its
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# license apply to Ansible or AWX.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# Neither the name of the <ORGANIZATION> nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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import os
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import memcache
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import json
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import datetime
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import base64
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from dateutil import parser
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from dateutil.tz import tzutc
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from ansible import constants as C
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try:
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from ansible.cache.base import BaseCacheModule
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except Exception:
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from ansible.plugins.cache.base import BaseCacheModule
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class CacheModule(BaseCacheModule):
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def __init__(self, *args, **kwargs):
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self.mc = memcache.Client([C.CACHE_PLUGIN_CONNECTION], debug=0)
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self._timeout = int(C.CACHE_PLUGIN_TIMEOUT)
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self._inventory_id = os.environ['INVENTORY_ID']
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@property
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def host_names_key(self):
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return '{}'.format(self._inventory_id)
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def translate_host_key(self, host_name):
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return '{}-{}'.format(self._inventory_id, base64.b64encode(host_name.encode('utf-8')))
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def translate_modified_key(self, host_name):
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return '{}-{}-modified'.format(self._inventory_id, base64.b64encode(host_name.encode('utf-8')))
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def get(self, key):
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host_key = self.translate_host_key(key)
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modified_key = self.translate_modified_key(key)
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'''
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Cache entry expired
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'''
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modified = self.mc.get(modified_key)
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if modified is None:
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raise KeyError
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modified = parser.parse(modified).replace(tzinfo=tzutc())
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now_utc = datetime.datetime.now(tzutc())
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if self._timeout != 0 and (modified + datetime.timedelta(seconds=self._timeout)) < now_utc:
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raise KeyError
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value_json = self.mc.get(host_key)
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if value_json is None:
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raise KeyError
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try:
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return json.loads(value_json)
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# If cache entry is corrupt or bad, fail gracefully.
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except (TypeError, ValueError):
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self.delete(key)
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raise KeyError
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def set(self, key, value):
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host_key = self.translate_host_key(key)
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modified_key = self.translate_modified_key(key)
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self.mc.set(host_key, json.dumps(value))
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value = json.dumps(value)
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rc = self.mc.set(host_key, value)
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if rc == 0 and len(value) > self.mc.server_max_value_length:
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self._display.error(
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"memcache.set('{}', '?') failed, value > server_max_value_length ({} bytes)".format(
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key, len(value)
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)
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)
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self.mc.set(modified_key, datetime.datetime.now(tzutc()).isoformat())
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def keys(self):
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return self.mc.get(self.host_names_key)
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def contains(self, key):
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try:
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self.get(key)
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return True
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except KeyError:
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return False
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def delete(self, key):
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self.set(key, {})
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def flush(self):
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host_names = self.mc.get(self.host_names_key)
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if not host_names:
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return
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for k in host_names:
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self.mc.delete(self.translate_host_key(k))
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self.mc.delete(self.translate_modified_key(k))
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def copy(self):
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ret = dict()
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host_names = self.mc.get(self.host_names_key)
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if not host_names:
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return
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for k in host_names:
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ret[k] = self.mc.get(self.translate_host_key(k))
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return ret
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