/usr/lib/python3/dist-packages/trytond/backend/mysql/database.py is in tryton-server 4.6.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# this repository contains the full copyright notices and license terms.
from trytond.backend.database import DatabaseInterface, SQLType
from trytond.config import config, parse_uri
import MySQLdb
import MySQLdb.cursors
import MySQLdb.converters
from MySQLdb import IntegrityError as DatabaseIntegrityError
from MySQLdb import OperationalError as DatabaseOperationalError
import os
import time
import urllib.request, urllib.parse, urllib.error
from sql import Flavor, Expression
from sql.functions import Extract, Overlay, CharLength
__all__ = ['Database', 'DatabaseIntegrityError', 'DatabaseOperationalError']
class MySQLExtract(Extract):
def is_epoch(self):
return self.args[0].upper() == 'EPOCH'
def __str__(self):
if self.is_epoch():
return 'UNIX_TIMESTAMP(%s)' % self._format(self.args[1])
return super(MySQLExtract, self).__str__()
@property
def params(self):
if self.is_epoch():
arg = self.args[1]
if isinstance(arg, Expression):
return arg.params
else:
return (arg,)
return super(MySQLExtract, self).params
class MySQLOverlay(Overlay):
@property
def mysql_args(self):
if len(self.args) == 3:
string, placing, from_ = self.args
for_ = CharLength(placing)
else:
string, placing, from_, for_ = self.args
return (string, from_, placing, string, from_, for_)
def __str__(self):
return ('CONCAT(SUBSTRING(%s FROM 1 FOR %s), %s, '
'SUBSTRING(%s FROM %s + 1 + %s))'
% tuple(map(self._format, self.mysql_args)))
@property
def params(self):
p = ()
for arg in self.mysql_args:
if isinstance(arg, Expression):
p += arg.params
else:
p += (arg,)
return p
MAPPING = {
Extract: MySQLExtract,
Overlay: MySQLOverlay,
}
class Database(DatabaseInterface):
_list_cache = None
_list_cache_timestamp = None
flavor = Flavor(
max_limit=18446744073709551610, function_mapping=MAPPING,
null_ordering=False)
TYPES_MAPPING = {
'BLOB': SQLType('LONGBLOB', 'LONGBLOB'),
'DATETIME': SQLType('TIMESTAMP', 'TIMESTAMP NULL'),
'TIMESTAMP': SQLType('TIMESTAMP', 'TIMESTAMP NULL'),
'FLOAT': SQLType('DOUBLE', 'DOUBLE(255, 15)'),
'INTEGER': SQLType('SIGNED INTEGER', 'BIGINT'),
'BIGINTEGER': SQLType('SIGNED INTEGER', 'BIGINT'),
'NUMERIC': SQLType('DECIMAL', 'DECIMAL(65, 30)'),
'INTERVAL': SQLType('DOUBLE', 'DOUBLE(255, 6)'),
}
def connect(self):
return self
def get_connection(self, autocommit=False, readonly=False):
conv = MySQLdb.converters.conversions.copy()
conv[float] = lambda value, _: repr(value)
conv[MySQLdb.constants.FIELD_TYPE.TIME] = MySQLdb.times.Time_or_None
args = {
'db': self.name,
'sql_mode': 'traditional,postgresql',
'use_unicode': True,
'charset': 'utf8',
'conv': conv,
}
uri = parse_uri(config.get('database', 'uri'))
if uri.hostname:
args['host'] = uri.hostname
if uri.port:
args['port'] = uri.port
if uri.username:
args['user'] = uri.username
if uri.password:
args['passwd'] = urllib.parse.unquote_plus(uri.password)
conn = MySQLdb.connect(**args)
cursor = conn.cursor()
cursor.execute('SET time_zone = "+00:00"')
return conn
def put_connection(self, connection, close=False):
connection.close()
def close(self):
return
@classmethod
def create(cls, connection, database_name):
cursor = connection.cursor()
cursor.execute('CREATE DATABASE `' + database_name + '` '
'DEFAULT CHARACTER SET = \'utf8\'')
cls._list_cache = None
@classmethod
def drop(cls, connection, database_name):
cursor = connection.cursor()
cursor.execute('DROP DATABASE `' + database_name + '`')
cls._list_cache = None
def list(self):
now = time.time()
timeout = config.getint('session', 'timeout')
res = Database._list_cache
if res and abs(Database._list_cache_timestamp - now) < timeout:
return res
conn = self.get_connection()
cursor = conn.cursor()
cursor.execute('SHOW DATABASES')
res = []
for db_name, in cursor.fetchall():
try:
database = Database(db_name).connect()
except Exception:
continue
if database.test():
res.append(db_name)
database.close()
self.put_connection(conn)
Database._list_cache = res
Database._list_cache_timestamp = now
return res
def init(self):
from trytond.modules import get_module_info
connection = self.get_connection()
cursor = connection.cursor()
sql_file = os.path.join(os.path.dirname(__file__), 'init.sql')
with open(sql_file) as fp:
for line in fp.read().split(';'):
if (len(line) > 0) and (not line.isspace()):
cursor.execute(line)
for module in ('ir', 'res'):
state = 'not activated'
if module in ('ir', 'res'):
state = 'to activate'
info = get_module_info(module)
cursor.execute('INSERT INTO ir_module '
'(create_uid, create_date, name, state) '
'VALUES (%s, now(), %s, %s)',
(0, module, state))
cursor.execute('SELECT LAST_INSERT_ID()')
module_id, = cursor.fetchone()
for dependency in info.get('depends', []):
cursor.execute('INSERT INTO ir_module_dependency '
'(create_uid, create_date, module, name) '
'VALUES (%s, now(), %s, %s)',
(0, module_id, dependency))
connection.commit()
self.put_connection(connection)
def test(self):
is_tryton_database = False
connection = self.get_connection()
cursor = connection.cursor()
cursor.execute("SHOW TABLES")
for table, in cursor.fetchall():
if table in (
'ir_model',
'ir_model_field',
'ir_ui_view',
'ir_ui_menu',
'res_user',
'res_group',
'ir_module',
'ir_module_dependency',
'ir_translation',
'ir_lang',
):
is_tryton_database = True
break
self.put_connection(connection)
return is_tryton_database
def lastid(self, cursor):
# This call is not thread safe
cursor.execute('SELECT LAST_INSERT_ID()')
return cursor.fetchone()[0]
def lock(self, connection, table):
# Lock of table doesn't work because MySQL require
# that the session locks all tables that will be accessed
# but 'FLUSH TABLES WITH READ LOCK' creates deadlock
pass
def has_constraint(self):
return False
def has_multirow_insert(self):
return True
def update_auto_increment(self, connection, table, value):
cursor = connection.cursor()
cursor.execute('ALTER TABLE `%s` AUTO_INCREMENT = %%s' % table,
(value,))
def sql_type(self, type_):
if type_ in self.TYPES_MAPPING:
return self.TYPES_MAPPING[type_]
if type_.startswith('VARCHAR'):
return SQLType('CHAR', 'VARCHAR(255)')
return SQLType(type_, type_)
def sql_format(self, type_, value):
if type_ == 'INTERVAL':
return value.total_seconds()
return value
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