-
Notifications
You must be signed in to change notification settings - Fork 704
Expand file tree
/
Copy path__init__.py
More file actions
50 lines (43 loc) · 1.72 KB
/
Copy path__init__.py
File metadata and controls
50 lines (43 loc) · 1.72 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
# Copyright 2020 The SQLFlow Authors. All rights reserved.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License
# NOTE(sneaxiy): do not import the XxxConnection object outside the
# following method. It is because those imports are quite slow (about 1-2s),
# making that the normal SQL statement runs very slow.
def get_connection_object(driver):
if driver == "mysql":
from runtime.dbapi.mysql import MySQLConnection
return MySQLConnection
elif driver == "hive":
from runtime.dbapi.hive import HiveConnection
return HiveConnection
elif driver == "maxcompute":
from runtime.dbapi.maxcompute import MaxComputeConnection
return MaxComputeConnection
elif driver == "paiio":
from runtime.dbapi.paiio import PaiIOConnection
return PaiIOConnection
else:
raise ValueError("unsupported driver type %s" % driver)
def connect(uri):
"""Connect to given uri
Params:
uri: a valid URI string
Returns:
A Connection object
Raises:
ValueError if the uri is not valid or can't find given driver
"""
parts = uri.split("://")
if len(parts) < 2:
raise ValueError("Input should be a valid uri.", uri)
return get_connection_object(parts[0])(uri)