forked from aws/aws-cli
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathparamfile.py
More file actions
75 lines (61 loc) · 2.23 KB
/
paramfile.py
File metadata and controls
75 lines (61 loc) · 2.23 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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
#!/usr/bin/env python
# Copyright 2012-2013 Amazon.com, Inc. or its affiliates. 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. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file 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.
import logging
import os
from botocore.vendored import requests
import six
logger = logging.getLogger(__name__)
class ResourceLoadingError(Exception):
pass
def get_paramfile(path):
"""
It is possible to pass parameters to operations by referring
to files or URI's. If such a reference is detected, this
function attempts to retrieve the data from the file or URI
and returns it. If there are any errors or if the ``path``
does not appear to refer to a file or URI, a ``None`` is
returned.
"""
data = None
if isinstance(path, six.string_types):
for prefix in PrefixMap:
if path.startswith(prefix):
data = PrefixMap[prefix](prefix, path)
return data
def get_file(prefix, path):
file_path = path[len(prefix):]
file_path = os.path.expanduser(file_path)
file_path = os.path.expandvars(file_path)
if not os.path.isfile(file_path):
raise ResourceLoadingError("file does not exist: %s" % file_path)
try:
with open(file_path) as f:
return f.read()
except (OSError, IOError) as e:
raise ResourceLoadingError('Unable to load paramfile %s: %s' % (
path, e))
def get_uri(prefix, uri):
try:
r = requests.get(uri)
if r.status_code == 200:
return r.text
else:
raise ResourceLoadingError(
"received non 200 status code of %s" % (
r.status_code))
except Exception as e:
raise ResourceLoadingError('Unable to retrieve %s: %s' % (uri, e))
PrefixMap = {'file://': get_file,
'http://': get_uri,
'https://': get_uri}