|
|
# -*- coding: utf-8 -*-
|
|
|
|
|
|
# Copyright (C) 2010-2019 RhodeCode GmbH
|
|
|
#
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
|
# it under the terms of the GNU Affero General Public License, version 3
|
|
|
# (only), as published by the Free Software Foundation.
|
|
|
#
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
# GNU General Public License for more details.
|
|
|
#
|
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
#
|
|
|
# This program is dual-licensed. If you wish to learn more about the
|
|
|
# RhodeCode Enterprise Edition, including its added features, Support services,
|
|
|
# and proprietary license terms, please see https://rhodecode.com/licenses/
|
|
|
|
|
|
"""
|
|
|
Custom LRU memory manager for debugging purposes. It allows to track the keys
|
|
|
and the state of LRU dict.
|
|
|
|
|
|
inrae.cache is licensed under LRUDict is licensed under ZPL license
|
|
|
This software is Copyright (c) Zope Corporation (tm) and
|
|
|
Contributors. All rights reserved.
|
|
|
"""
|
|
|
|
|
|
import logging
|
|
|
|
|
|
from repoze.lru import LRUCache
|
|
|
from beaker.container import MemoryNamespaceManager, AbstractDictionaryNSManager
|
|
|
from rhodecode.lib.utils2 import safe_str
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
|
|
|
class LRUDict(LRUCache):
|
|
|
"""
|
|
|
Wrapper to provide partial dict access
|
|
|
"""
|
|
|
|
|
|
def __setitem__(self, key, value):
|
|
|
return self.put(key, value)
|
|
|
|
|
|
def __getitem__(self, key):
|
|
|
return self.get(key)
|
|
|
|
|
|
def __contains__(self, key):
|
|
|
return bool(self.get(key))
|
|
|
|
|
|
def __delitem__(self, key):
|
|
|
del self.data[key]
|
|
|
|
|
|
def keys(self):
|
|
|
return self.data.keys()
|
|
|
|
|
|
|
|
|
class LRUDictDebug(LRUDict):
|
|
|
"""
|
|
|
Wrapper to provide some debug options
|
|
|
"""
|
|
|
def _report_keys(self):
|
|
|
elems_cnt = '%s/%s' % (len(self.keys()), self.size)
|
|
|
# trick for pformat print it more nicely
|
|
|
fmt = '\n'
|
|
|
for cnt, elem in enumerate(self.keys()):
|
|
|
fmt += '%s - %s\n' % (cnt+1, safe_str(elem))
|
|
|
log.debug('current LRU keys (%s):%s', elems_cnt, fmt)
|
|
|
|
|
|
def __getitem__(self, key):
|
|
|
self._report_keys()
|
|
|
return self.get(key)
|
|
|
|
|
|
|
|
|
class MemoryLRUNamespaceManagerBase(MemoryNamespaceManager):
|
|
|
default_max_items = 10000
|
|
|
|
|
|
def _get_factory(self, max_items):
|
|
|
|
|
|
def Factory():
|
|
|
return LRUDict(int(max_items))
|
|
|
return Factory
|
|
|
|
|
|
def __init__(self, namespace, **kwargs):
|
|
|
AbstractDictionaryNSManager.__init__(self, namespace)
|
|
|
if 'max_items' in kwargs:
|
|
|
max_items = kwargs['max_items']
|
|
|
else:
|
|
|
max_items = self.default_max_items
|
|
|
|
|
|
Factory = self._get_factory(max_items)
|
|
|
|
|
|
self.dictionary = MemoryNamespaceManager.namespaces.get(
|
|
|
self.namespace, Factory)
|
|
|
|
|
|
|
|
|
class MemoryLRUNamespaceManagerDebug(MemoryLRUNamespaceManagerBase):
|
|
|
"""
|
|
|
A memory namespace manager that return with LRU dicts backend,
|
|
|
special debug for testing
|
|
|
"""
|
|
|
default_max_items = 10000
|
|
|
|
|
|
def _get_factory(self, max_items):
|
|
|
|
|
|
def Factory():
|
|
|
return LRUDictDebug(int(max_items))
|
|
|
return Factory
|
|
|
|
