blob: 4204d53361324f5caf31e1dcf79834b746f49ac4 (
plain)
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
|
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (c) 2017 Cisco and/or its affiliates.
#
# 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.
#
import errno
import logging
import os
import tempfile
log = logging.getLogger(__name__)
def mkdir(directory):
"""
Create a directory (mkdir -p).
Args:
directory: A String containing an absolute path.
Raises:
OSError: If the directory cannot be created.
"""
try:
if not os.path.exists(directory):
log.info("Creating '%s' directory" % directory)
os.makedirs(directory)
except OSError as e:
if e.errno == errno.EEXIST and os.path.isdir(directory):
pass
else:
raise OSError("Cannot mkdir %s: %s" % (directory, e))
def check_writable_directory(directory):
"""
Tests whether a directory is writable.
Args:
directory: A String containing an absolute path.
Raises:
RuntimeError: If the directory does not exists or isn't writable.
"""
if not os.path.exists(directory):
raise RuntimeError("Directory '%s' does not exists" % directory)
if not os.access(directory, os.W_OK | os.X_OK):
raise RuntimeError("Directory '%s' is not writable" % directory)
try:
with tempfile.TemporaryFile(dir = directory):
pass
except Exception as e:
raise RuntimeError("Cannot write into directory '%s': %s" % (directory, e))
def ensure_writable_directory(directory):
"""
Tests whether a directory exists and is writable. If not,
try to create such a directory.
Args:
directory: A String containing an absolute path.
Raises:
RuntimeError: If the directory does not exists and cannot be created.
"""
try:
check_writable_directory(directory)
except RuntimeError as e:
mkdir(directory)
|
