213 lines
8.7 KiB
Python
213 lines
8.7 KiB
Python
#!/usr/bin/python
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#Copyright 2008 Steffen Jobbagy-Felso
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#This program is free software: you can redistribute it and/or modify
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#it under the terms of the GNU Affero General Public License as published by
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#the Free Software Foundation, version 3 of the License.
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#
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#This program 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 Affero General Public License
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#along with this program. If not, see <http://www.gnu.org/licenses/>.
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#In the "official" distribution you can find the license in
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#agpl-3.0.txt in the docs folder of the package.
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import os
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import re
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import fpdb_simple
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import FpdbSQLQueries
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class fpdb_db:
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def __init__(self):
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"""Simple constructor, doesnt really do anything"""
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self.db=None
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self.cursor=None
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self.sql = {}
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self.MYSQL_INNODB=2
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self.PGSQL=3
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self.SQLITE=4
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#end def __init__
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def do_connect(self, config=None):
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"""Connects a database using information in config"""
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if config is None:
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raise FpdbError('Configuration not defined')
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self.settings = {}
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if (os.sep=="/"):
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self.settings['os']="linuxmac"
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else:
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self.settings['os']="windows"
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self.settings.update(config.get_db_parameters())
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self.connect(self.settings['db-backend'],
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self.settings['db-host'],
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self.settings['db-databaseName'],
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self.settings['db-user'],
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self.settings['db-password'])
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#end def do_connect
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def connect(self, backend=None, host=None, database=None,
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user=None, password=None):
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"""Connects a database with the given parameters"""
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if backend is None:
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raise FpdbError('Database backend not defined')
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self.backend=backend
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self.host=host
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self.user=user
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self.password=password
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self.database=database
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if backend==self.MYSQL_INNODB:
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import MySQLdb
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self.db=MySQLdb.connect(host = host, user = user, passwd = password, db = database)
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elif backend==self.PGSQL:
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import psycopg2
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# If DB connection is made over TCP, then the variables
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# host, user and password are required
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print "host=%s user=%s pass=%s." % (host, user, password)
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if self.host and self.user and self.password:
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self.db = psycopg2.connect(host = host,
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user = user,
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password = password,
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database = database)
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# For local domain-socket connections, only DB name is
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# needed, and everything else is in fact undefined and/or
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# flat out wrong
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else:
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self.db = psycopg2.connect(database = database)
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else:
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raise fpdb_simple.FpdbError("unrecognised database backend:"+backend)
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self.cursor=self.db.cursor()
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self.cursor.execute('SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED')
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# Set up query dictionary as early in the connection process as we can.
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self.sql = FpdbSQLQueries.FpdbSQLQueries(self.get_backend_name())
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self.wrongDbVersion=False
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try:
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self.cursor.execute("SELECT * FROM Settings")
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settings=self.cursor.fetchone()
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if settings[0]!=118:
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print "outdated or too new database version - please recreate tables"
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self.wrongDbVersion=True
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except:# _mysql_exceptions.ProgrammingError:
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print "failed to read settings table - please recreate tables"
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self.wrongDbVersion=True
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#end def connect
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def disconnect(self, due_to_error=False):
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"""Disconnects the DB"""
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if due_to_error:
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self.db.rollback()
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else:
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self.db.commit()
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self.cursor.close()
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self.db.close()
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#end def disconnect
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def reconnect(self, due_to_error=False):
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"""Reconnects the DB"""
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#print "started fpdb_db.reconnect"
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self.disconnect(due_to_error)
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self.connect(self.backend, self.host, self.database, self.user, self.password)
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def create_tables(self):
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#todo: should detect and fail gracefully if tables already exist.
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self.cursor.execute(self.sql.query['createSettingsTable'])
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self.cursor.execute(self.sql.query['createSitesTable'])
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self.cursor.execute(self.sql.query['createGametypesTable'])
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self.cursor.execute(self.sql.query['createPlayersTable'])
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self.cursor.execute(self.sql.query['createAutoratesTable'])
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self.cursor.execute(self.sql.query['createHandsTable'])
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self.cursor.execute(self.sql.query['createBoardCardsTable'])
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self.cursor.execute(self.sql.query['createTourneyTypesTable'])
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self.cursor.execute(self.sql.query['createTourneysTable'])
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self.cursor.execute(self.sql.query['createTourneysPlayersTable'])
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self.cursor.execute(self.sql.query['createHandsPlayersTable'])
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self.cursor.execute(self.sql.query['createHandsActionsTable'])
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self.cursor.execute(self.sql.query['createHudCacheTable'])
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#self.cursor.execute(self.sql.query['addTourneyIndex'])
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#self.cursor.execute(self.sql.query['addHandsIndex'])
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#self.cursor.execute(self.sql.query['addPlayersIndex'])
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self.fillDefaultData()
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self.db.commit()
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#end def disconnect
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def drop_tables(self):
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"""Drops the fpdb tables from the current db"""
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if(self.get_backend_name() == 'MySQL InnoDB'):
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#Databases with FOREIGN KEY support need this switched of before you can drop tables
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self.drop_referencial_integrity()
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# Query the DB to see what tables exist
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self.cursor.execute(self.sql.query['list_tables'])
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for table in self.cursor:
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self.cursor.execute(self.sql.query['drop_table'] + table[0])
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elif(self.get_backend_name() == 'PostgreSQL'):
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self.db.commit()# I have no idea why this makes the query work--REB 07OCT2008
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self.cursor.execute(self.sql.query['list_tables'])
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tables = self.cursor.fetchall()
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for table in tables:
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self.cursor.execute(self.sql.query['drop_table'] + table[0] + ' cascade')
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elif(self.get_backend_name() == 'SQLite'):
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#todo: sqlite version here
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print "Empty function here"
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self.db.commit()
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#end def drop_tables
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def drop_referencial_integrity(self):
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"""Update all tables to remove foreign keys"""
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self.cursor.execute(self.sql.query['list_tables'])
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result = self.cursor.fetchall()
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for i in range(len(result)):
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self.cursor.execute("SHOW CREATE TABLE " + result[i][0])
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inner = self.cursor.fetchall()
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for j in range(len(inner)):
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# result[i][0] - Table name
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# result[i][1] - CREATE TABLE parameters
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#Searching for CONSTRAINT `tablename_ibfk_1`
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for m in re.finditer('(ibfk_[0-9]+)', inner[j][1]):
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key = "`" + inner[j][0] + "_" + m.group() + "`"
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self.cursor.execute("ALTER TABLE " + inner[j][0] + " DROP FOREIGN KEY " + key)
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self.db.commit()
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#end drop_referencial_inegrity
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def get_backend_name(self):
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"""Returns the name of the currently used backend"""
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if self.backend==2:
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return "MySQL InnoDB"
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elif self.backend==3:
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return "PostgreSQL"
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else:
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raise fpdb_simple.FpdbError("invalid backend")
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#end def get_backend_name
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def get_db_info(self):
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return (self.host, self.database, self.user, self.password)
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#end def get_db_info
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def fillDefaultData(self):
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self.cursor.execute("INSERT INTO Settings VALUES (118);")
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self.cursor.execute("INSERT INTO Sites VALUES (DEFAULT, 'Full Tilt Poker', 'USD');")
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self.cursor.execute("INSERT INTO Sites VALUES (DEFAULT, 'PokerStars', 'USD');")
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self.cursor.execute("INSERT INTO Sites VALUES (DEFAULT, 'Everleaf', 'USD');")
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self.cursor.execute("INSERT INTO TourneyTypes VALUES (DEFAULT, 1, 0, 0, 0, False);")
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#end def fillDefaultData
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def recreate_tables(self):
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"""(Re-)creates the tables of the current DB"""
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self.drop_tables()
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self.create_tables()
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fpdb_simple.createAllIndexes(self)
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self.db.commit()
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print "Finished recreating tables"
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#end def recreate_tables
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#end class fpdb_db
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