summaryrefslogtreecommitdiffstats
path: root/ufo/gluster/swift/common/fs_utils.py
blob: 0613a26dce8f772c363ab4e006a227a4aa754ea7 (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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
# Copyright (c) 2012 Red Hat, Inc.
#
# 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 logging
import os
import errno
import os.path as os_path
from eventlet import tpool
from gluster.swift.common.exceptions import FileOrDirNotFoundError, \
    NotDirectoryError

def do_walk(*args, **kwargs):
    return os.walk(*args, **kwargs)

def do_write(fd, msg):
    try:
        cnt = os.write(fd, msg)
    except OSError as err:
        logging.exception("Write failed, err: %s", str(err))
        raise
    return cnt

def do_mkdir(path):
    try:
        os.mkdir(path)
    except OSError as err:
        if err.errno != errno.EEXIST:
            logging.exception("Mkdir failed on %s err: %s", path, err.strerror)
            raise
    return True

def do_makedirs(path):
    try:
        os.makedirs(path)
    except OSError as err:
        if err.errno != errno.EEXIST:
            logging.exception("Makedirs failed on %s err: %s", path, err.strerror)
            raise
    return True

def do_listdir(path):
    try:
        buf = os.listdir(path)
    except OSError as err:
        logging.exception("Listdir failed on %s err: %s", path, err.strerror)
        raise
    return buf

def do_chown(path, uid, gid):
    try:
        os.chown(path, uid, gid)
    except OSError as err:
        logging.exception("Chown failed on %s err: %s", path, err.strerror)
        raise
    return True

def do_stat(path):
    try:
        #Check for fd.
        if isinstance(path, int):
            buf = os.fstat(path)
        else:
            buf = os.stat(path)
    except OSError as err:
        logging.exception("Stat failed on %s err: %s", path, err.strerror)
        raise
    return buf

def do_open(path, mode):
    if isinstance(mode, int):
        try:
            fd = os.open(path, mode)
        except OSError as err:
            logging.exception("Open failed on %s err: %s", path, str(err))
            raise
    else:
        try:
            fd = open(path, mode)
        except IOError as err:
            logging.exception("Open failed on %s err: %s", path, str(err))
            raise
    return fd

def do_close(fd):
    #fd could be file or int type.
    try:
        if isinstance(fd, int):
            os.close(fd)
        else:
            fd.close()
    except OSError as err:
        logging.exception("Close failed on %s err: %s", fd, err.strerror)
        raise
    return True

def do_unlink(path, log = True):
    try:
        os.unlink(path)
    except OSError as err:
        if err.errno != errno.ENOENT:
            if log:
                logging.exception("Unlink failed on %s err: %s", path, err.strerror)
            raise
    return True

def do_rmdir(path):
    try:
        os.rmdir(path)
    except OSError as err:
        if err.errno != errno.ENOENT:
            logging.exception("Rmdir failed on %s err: %s", path, err.strerror)
            raise
        res = False
    else:
        res = True
    return res

def do_rename(old_path, new_path):
    try:
        os.rename(old_path, new_path)
    except OSError as err:
        logging.exception("Rename failed on %s to %s  err: %s", old_path, new_path, \
                          err.strerror)
        raise
    return True

def mkdirs(path):
    """
    Ensures the path is a directory or makes it if not. Errors if the path
    exists but is a file or on permissions failure.

    :param path: path to create
    """
    if not os.path.isdir(path):
        do_makedirs(path)

def dir_empty(path):
    """
    Return true if directory/container is empty.
    :param path: Directory path.
    :returns: True/False.
    """
    if os.path.isdir(path):
        files = do_listdir(path)
        return not files
    elif not os.path.exists(path):
        raise FileOrDirNotFoundError()
    raise NotDirectoryError()

def rmdirs(path):
    if not os.path.isdir(path):
        return False
    try:
        os.rmdir(path)
    except OSError as err:
        if err.errno != errno.ENOENT:
            logging.error("rmdirs failed on %s, err: %s", path, err.strerror)
            return False
    return True

def do_fsync(fd):
    try:
        tpool.execute(os.fsync, fd)
    except OSError as err:
        logging.exception("fsync failed with err: %s", err.strerror)
        raise
    return True