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|
try:
import mysql.connector
except ImportError:
pass
try:
import sqlite3
except ImportError:
pass
import aurweb.config
def get_sqlalchemy_url():
"""
Build an SQLAlchemy for use with create_engine based on the aurweb configuration.
"""
import sqlalchemy
aur_db_backend = aurweb.config.get('database', 'backend')
if aur_db_backend == 'mysql':
return sqlalchemy.engine.url.URL(
'mysql+mysqlconnector',
username=aurweb.config.get('database', 'user'),
password=aurweb.config.get('database', 'password'),
host=aurweb.config.get('database', 'host'),
database=aurweb.config.get('database', 'name'),
query={
'unix_socket': aurweb.config.get('database', 'socket'),
'buffered': True,
},
)
elif aur_db_backend == 'sqlite':
return sqlalchemy.engine.url.URL(
'sqlite',
database=aurweb.config.get('database', 'name'),
)
else:
raise ValueError('unsupported database backend')
class Connection:
_conn = None
_paramstyle = None
def __init__(self):
aur_db_backend = aurweb.config.get('database', 'backend')
if aur_db_backend == 'mysql':
aur_db_host = aurweb.config.get('database', 'host')
aur_db_name = aurweb.config.get('database', 'name')
aur_db_user = aurweb.config.get('database', 'user')
aur_db_pass = aurweb.config.get('database', 'password')
aur_db_socket = aurweb.config.get('database', 'socket')
self._conn = mysql.connector.connect(host=aur_db_host,
user=aur_db_user,
passwd=aur_db_pass,
db=aur_db_name,
unix_socket=aur_db_socket,
buffered=True)
self._paramstyle = mysql.connector.paramstyle
elif aur_db_backend == 'sqlite':
aur_db_name = aurweb.config.get('database', 'name')
self._conn = sqlite3.connect(aur_db_name)
self._paramstyle = sqlite3.paramstyle
else:
raise ValueError('unsupported database backend')
def execute(self, query, params=()):
if self._paramstyle in ('format', 'pyformat'):
query = query.replace('%', '%%').replace('?', '%s')
elif self._paramstyle == 'qmark':
pass
else:
raise ValueError('unsupported paramstyle')
cur = self._conn.cursor()
cur.execute(query, params)
return cur
def commit(self):
self._conn.commit()
def close(self):
self._conn.close()
|
