67 lines
2.3 KiB
Python
67 lines
2.3 KiB
Python
# Copyright (c) 2012 Web Notes Technologies Pvt Ltd (http://erpnext.com)
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#
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# MIT License (MIT)
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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# PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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# OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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from __future__ import unicode_literals
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import memcache, conf
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from webnotes.utils import cstr
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class MClient(memcache.Client):
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"""memcache client that will automatically prefix conf.db_name
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and maintain a key list"""
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def n(self, key):
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return (conf.db_name + ":" + key.replace(" ", "_")).encode('utf-8')
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def set_value(self, key, val):
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self.set(self.n(key), val)
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self.add_to_key_list(key)
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def get_value(self, key):
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return self.get(self.n(key))
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def delete_value(self, key):
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self.delete(self.n(key))
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def add_to_key_list(self, key):
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key_list = self.get_value('key_list') or []
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if key not in key_list:
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key_list.append(key)
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self.set(self.n("key_list"), key_list)
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def flush_keys(self, startswith):
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"""flush keys from known key_list"""
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if not startswith:
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for key in self.get_value('key_list'):
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self.delete_value(key)
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self.delete_value('key_list')
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else:
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deleted = []
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keys = self.get_value('key_list') or []
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for key in keys:
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if key.startswith(startswith):
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self.delete(self.n(key))
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deleted.append(key)
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for d in deleted:
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keys.remove(d)
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self.set_value("key_list", keys)
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