def setup(cls):
"""Setup the object persistance system.
Perform initialization, which in this case means creating
the database if it does not exist.
"""
assert (cls.connection_info is not None)
conn = connect_to_mysql(autocommit=True, **cls.connection_info)
exec_mysql_stmt(
conn, "CREATE DATABASE %s DEFAULT CHARSET=utf8" % (cls.database, ))
def teardown(cls):
"""Tear down the object persistance system.
This should only be called if the persistance database should
be removed from the persistance server since it will delete
all object tables.
"""
assert (cls.connection_info is not None)
conn = connect_to_mysql(autocommit=True, **cls.connection_info)
exec_mysql_stmt(conn, "DROP DATABASE IF EXISTS %s" % (cls.database, ))
def setup(cls):
"""Setup the object persistance system.
Perform initialization, which in this case means creating
the database if it does not exist.
"""
assert (cls.connection_info is not None)
conn = _server_utils.create_mysql_connection(autocommit=True,
use_unicode=True,
**cls.connection_info)
_server_utils.exec_mysql_stmt(conn,
"CREATE DATABASE %s" % (cls.database, ))
def setup(cls):
"""Setup the object persistance system.
Perform initialization, which in this case means creating
the database if it does not exist.
"""
assert (cls.connection_info is not None)
conn = connect_to_mysql(
autocommit=True, **cls.connection_info
)
exec_mysql_stmt(
conn, "CREATE DATABASE %s DEFAULT CHARSET=utf8" % (cls.database, )
)
def setup(cls):
"""Setup the object persistance system.
Perform initialization, which in this case means creating
the database if it does not exist.
"""
assert (cls.connection_info is not None)
conn = _server_utils.create_mysql_connection(
autocommit=True, use_unicode=False, **cls.connection_info
)
_server_utils.exec_mysql_stmt(
conn, "CREATE DATABASE %s" % (cls.database, )
)
def teardown(cls):
"""Tear down the object persistance system.
This should only be called if the persistance database should
be removed from the persistance server since it will delete
all object tables.
"""
assert (cls.connection_info is not None)
conn = connect_to_mysql(
autocommit=True, **cls.connection_info
)
exec_mysql_stmt(
conn, "DROP DATABASE IF EXISTS %s" % (cls.database, )
)
def max_allowed_connections(self):
"""Return the maximum number of allowed connections to server.
"""
row = exec_mysql_stmt(
self.__cnx, "SELECT @@GLOBAL.max_connections"
)
return int(row[0][0])
def max_allowed_connections(self):
"""Return the maximum number of allowed connections to server.
"""
row = exec_mysql_stmt(
self.__cnx, "SELECT @@GLOBAL.max_connections"
)
return int(row[0][0])
def uuid(self):
"""Return the MySQLPersister's UUID if the server supports it.
Otherwise, return None.
"""
try:
row = exec_mysql_stmt(self.__cnx, "SELECT @@GLOBAL.SERVER_UUID")
return _uuid.UUID(str(row[0][0]))
except _errors.DatabaseError:
pass
return None
def uuid(self):
"""Return the MySQLPersister's UUID if the server supports it.
Otherwise, return None.
"""
try:
row = exec_mysql_stmt(
self.__cnx, "SELECT @@GLOBAL.SERVER_UUID"
)
return _uuid.UUID(str(row[0][0]))
except _errors.DatabaseError:
pass
return None
def exec_stmt(self, stmt_str, options=None):
"""Execute statements against the server.
If a new transaction is about to be started, this method checks whether
the connection is valid or not. If the connection is invalid, it tries
to restablish it as MySQL might disconnect inactive connections.
See :meth:`~mysql.fabric.server_utils.exec_stmt`.
"""
while True:
if self.__check_connection and \
not is_valid_mysql_connection(self.__cnx):
self._try_to_fix_connection()
return exec_mysql_stmt(self.__cnx, stmt_str, options)
def event_scheduler(self):
"""Return the event_scheduler's setting.
"""
try:
row = exec_mysql_stmt(self.__cnx,
"SELECT @@GLOBAL.EVENT_SCHEDULER")
if row[0][0] == "ON":
return True
else:
return False
except _errors.DatabaseError:
pass
return None
def exec_stmt(self, stmt_str, options=None):
"""Execute statements against the server.
If a new transaction is about to be started, this method checks whether
the connection is valid or not. If the connection is invalid, it tries
to restablish it as MySQL might disconnect inactive connections.
See :meth:`~mysql.fabric.server_utils.exec_stmt`.
"""
while True:
if self.__check_connection and \
not is_valid_mysql_connection(self.__cnx):
self._try_to_fix_connection()
return exec_mysql_stmt(
self.__cnx, stmt_str, options
)
def event_scheduler(self):
"""Return the event_scheduler's setting.
"""
try:
row = exec_mysql_stmt(
self.__cnx, "SELECT @@GLOBAL.EVENT_SCHEDULER"
)
if row[0][0] == "ON":
return True
else:
return False
except _errors.DatabaseError:
pass
return None
