mirror of
https://github.com/Tautulli/Tautulli.git
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138 lines
4.9 KiB
Python
138 lines
4.9 KiB
Python
# This file is part of PlexPy.
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#
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# PlexPy 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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# PlexPy 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 PlexPy. If not, see <http://www.gnu.org/licenses/>.
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from plexpy import logger
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import sqlite3
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import os
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import plexpy
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import time
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import threading
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db_lock = threading.Lock()
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def drop_session_db():
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monitor_db = MonitorDatabase()
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monitor_db.action('DROP TABLE sessions')
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def clear_history_tables():
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logger.debug(u"PlexPy Database :: Deleting all session_history records... No turning back now bub.")
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monitor_db = MonitorDatabase()
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monitor_db.action('DELETE FROM session_history')
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monitor_db.action('DELETE FROM session_history_media_info')
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monitor_db.action('DELETE FROM session_history_metadata')
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monitor_db.action('VACUUM;')
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def db_filename(filename="plexpy.db"):
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return os.path.join(plexpy.DATA_DIR, filename)
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def get_cache_size():
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# This will protect against typecasting problems produced by empty string and None settings
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if not plexpy.CONFIG.CACHE_SIZEMB:
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# sqlite will work with this (very slowly)
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return 0
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return int(plexpy.CONFIG.CACHE_SIZEMB)
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class MonitorDatabase(object):
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def __init__(self, filename='plexpy.db'):
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self.filename = filename
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self.connection = sqlite3.connect(db_filename(filename), timeout=20)
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# Don't wait for the disk to finish writing
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self.connection.execute("PRAGMA synchronous = OFF")
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# Journal disabled since we never do rollbacks
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self.connection.execute("PRAGMA journal_mode = %s" % plexpy.CONFIG.JOURNAL_MODE)
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# 64mb of cache memory, probably need to make it user configurable
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self.connection.execute("PRAGMA cache_size=-%s" % (get_cache_size() * 1024))
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self.connection.row_factory = sqlite3.Row
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def action(self, query, args=None, return_last_id=False):
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if query is None:
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return
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with db_lock:
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sql_result = None
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attempts = 0
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while attempts < 5:
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try:
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with self.connection as c:
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if args is None:
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sql_result = c.execute(query)
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else:
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sql_result = c.execute(query, args)
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# Our transaction was successful, leave the loop
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break
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except sqlite3.OperationalError, e:
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if "unable to open database file" in e.message or "database is locked" in e.message:
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logger.warn('Database Error: %s', e)
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attempts += 1
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time.sleep(1)
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else:
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logger.error('Database error: %s', e)
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raise
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except sqlite3.DatabaseError, e:
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logger.error('Fatal Error executing %s :: %s', query, e)
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raise
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return sql_result
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def select(self, query, args=None):
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sql_results = self.action(query, args).fetchall()
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if sql_results is None or sql_results == [None]:
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return []
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return sql_results
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def select_single(self, query, args=None):
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sql_results = self.action(query, args).fetchone()[0]
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if sql_results is None or sql_results == "":
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return ""
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return sql_results
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def upsert(self, table_name, value_dict, key_dict):
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trans_type = 'update'
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changes_before = self.connection.total_changes
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gen_params = lambda my_dict: [x + " = ?" for x in my_dict.keys()]
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update_query = "UPDATE " + table_name + " SET " + ", ".join(gen_params(value_dict)) + \
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" WHERE " + " AND ".join(gen_params(key_dict))
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self.action(update_query, value_dict.values() + key_dict.values())
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if self.connection.total_changes == changes_before:
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trans_type = 'insert'
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insert_query = (
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"INSERT INTO " + table_name + " (" + ", ".join(value_dict.keys() + key_dict.keys()) + ")" +
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" VALUES (" + ", ".join(["?"] * len(value_dict.keys() + key_dict.keys())) + ")"
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)
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try:
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self.action(insert_query, value_dict.values() + key_dict.values())
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except sqlite3.IntegrityError:
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logger.info('Queries failed: %s and %s', update_query, insert_query)
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# We want to know if it was an update or insert
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return trans_type
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