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from builtins import str
import jaydebeapi
from airflow.hooks.dbapi_hook import DbApiHook
[docs]class JdbcHook(DbApiHook):
"""
General hook for jdbc db access.
JDBC URL, username and password will be taken from the predefined connection.
Note that the whole JDBC URL must be specified in the "host" field in the DB.
Raises an airflow error if the given connection id doesn't exist.
"""
conn_name_attr = 'jdbc_conn_id'
default_conn_name = 'jdbc_default'
supports_autocommit = True
[docs] def get_conn(self):
conn = self.get_connection(getattr(self, self.conn_name_attr))
host = conn.host
login = conn.login
psw = conn.password
jdbc_driver_loc = conn.extra_dejson.get('extra__jdbc__drv_path')
jdbc_driver_name = conn.extra_dejson.get('extra__jdbc__drv_clsname')
conn = jaydebeapi.connect(jclassname=jdbc_driver_name,
url=str(host),
driver_args=[str(login), str(psw)],
jars=jdbc_driver_loc.split(","))
return conn
[docs] def set_autocommit(self, conn, autocommit):
"""
Enable or disable autocommit for the given connection.
:param conn: The connection
:return:
"""
conn.jconn.setAutoCommit(autocommit)