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56e2c28bad
Scene exceptions now uses a internal cache for scene exceptions and scene season exceptions, helps reduce overhead to DB and performs faster lookups when making scene exception requests.
115 lines
No EOL
3.9 KiB
Python
115 lines
No EOL
3.9 KiB
Python
# Author: Nic Wolfe <nic@wolfeden.ca>
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# URL: http://code.google.com/p/sickbeard/
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#
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# This file is part of SickRage.
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#
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# SickRage is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# SickRage is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with SickRage. If not, see <http://www.gnu.org/licenses/>.
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import sickbeard
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from sickbeard import db
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from sickbeard.helpers import sanitizeSceneName
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from sickbeard import logger
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nameCache = None
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def addNameToCache(name, indexer_id=0):
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"""
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Adds the show & tvdb id to the scene_names table in cache.db.
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name: The show name to cache
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indexer_id: the TVDB and TVRAGE id that this show should be cached with (can be None/0 for unknown)
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"""
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global nameCache
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cacheDB = db.DBConnection('cache.db')
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# standardize the name we're using to account for small differences in providers
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name = sickbeard.helpers.full_sanitizeSceneName(name)
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if name not in nameCache:
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nameCache[name] = int(indexer_id)
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cacheDB.action("INSERT OR REPLACE INTO scene_names (indexer_id, name) VALUES (?, ?)", [indexer_id, name])
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def retrieveNameFromCache(name):
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"""
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Looks up the given name in the scene_names table in cache.db.
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name: The show name to look up.
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Returns: the TVDB and TVRAGE id that resulted from the cache lookup or None if the show wasn't found in the cache
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"""
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global nameCache
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name = sickbeard.helpers.full_sanitizeSceneName(name)
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if name in nameCache:
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return int(nameCache[name])
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def retrieveShowFromCache(name):
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global nameCache
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indexer_id = retrieveNameFromCache(name)
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if indexer_id:
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return sickbeard.helpers.findCertainShow(sickbeard.showList, int(indexer_id))
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def clearCache():
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"""
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Deletes all "unknown" entries from the cache (names with indexer_id of 0).
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"""
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global nameCache
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# init name cache
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if not nameCache:
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nameCache = {}
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cacheDB = db.DBConnection('cache.db')
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cacheDB.action("DELETE FROM scene_names WHERE indexer_id = ?", [0])
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toRemove = [key for key, value in nameCache.iteritems() if value == 0]
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for key in toRemove:
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del nameCache[key]
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def saveNameCacheToDb():
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cacheDB = db.DBConnection('cache.db')
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for name, indexer_id in nameCache.items():
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cacheDB.action("INSERT OR REPLACE INTO scene_names (indexer_id, name) VALUES (?, ?)", [indexer_id, name])
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def buildNameCache():
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global nameCache
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# init name cache
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if not nameCache:
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nameCache = {}
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# clear internal name cache
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clearCache()
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logger.log(u"Updating internal name cache", logger.MESSAGE)
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cacheDB = db.DBConnection('cache.db')
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cache_results = cacheDB.select("SELECT * FROM scene_names")
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for cache_result in cache_results:
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name = sickbeard.helpers.full_sanitizeSceneName(cache_result["name"])
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indexer_id = int(cache_result["indexer_id"])
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nameCache[name] = indexer_id
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for show in sickbeard.showList:
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for curSeason in [-1] + sickbeard.scene_exceptions.get_scene_seasons(show.indexerid):
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nameCache[sickbeard.helpers.full_sanitizeSceneName(show.name)] = show.indexerid
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for name in sickbeard.scene_exceptions.get_scene_exceptions(show.indexerid, season=curSeason):
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nameCache[sickbeard.helpers.full_sanitizeSceneName(name)] = show.indexerid
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logger.log(u"Updated internal name cache", logger.MESSAGE)
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logger.log(u"Internal name cache set to: " + str(nameCache), logger.DEBUG) |