feluelle commented on a change in pull request #4405: [AIRFLOW-3598] Add tests
for MsSqlToHiveTransfer
URL: https://github.com/apache/airflow/pull/4405#discussion_r256083233
##########
File path: airflow/operators/mssql_to_hive.py
##########
@@ -98,38 +99,34 @@ def __init__(
@classmethod
def type_map(cls, mssql_type):
- t = pymssql
- d = {
- t.BINARY.value: 'INT',
- t.DECIMAL.value: 'FLOAT',
- t.NUMBER.value: 'INT',
+ map_dict = {
+ pymssql.BINARY.value: 'INT',
+ pymssql.DECIMAL.value: 'FLOAT',
+ pymssql.NUMBER.value: 'INT',
}
- return d[mssql_type] if mssql_type in d else 'STRING'
+ return map_dict[mssql_type] if mssql_type in map_dict else 'STRING'
def execute(self, context):
- hive = HiveCliHook(hive_cli_conn_id=self.hive_cli_conn_id)
mssql = MsSqlHook(mssql_conn_id=self.mssql_conn_id)
-
self.log.info("Dumping Microsoft SQL Server query results to local
file")
- conn = mssql.get_conn()
- cursor = conn.cursor()
- cursor.execute(self.sql)
- with NamedTemporaryFile("w") as f:
- csv_writer = csv.writer(f, delimiter=self.delimiter,
encoding='utf-8')
- field_dict = OrderedDict()
- col_count = 0
- for field in cursor.description:
- col_count += 1
- col_position = "Column{position}".format(position=col_count)
- field_dict[col_position if field[0] == '' else field[0]] \
- = self.type_map(field[1])
- csv_writer.writerows(cursor)
- f.flush()
- cursor.close()
- conn.close()
+ with closing(mssql.get_conn()) as conn:
Review comment:
Thanks @feng-tao for noticing and reporting this to me :) I really haven't
thought about that.
I found an example from the official pymssql docs:
http://pymssql.org/en/stable/pymssql_examples.html#using-the-with-statement-context-managers
So you are right. `closing` is not necessary here. I will fix this :)
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