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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
# Copyright (c) 2010 Mitch Garnaat http://garnaat.org/
# Copyright 2010 Google Inc.
# Copyright (c) 2010, Eucalyptus Systems, Inc.
# Copyright (c) 2011, Nexenta Systems Inc.
# All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
"""
This class encapsulates the provider-specific header differences.
"""
import os
import boto
from boto import config
from boto.gs.acl import ACL
from boto.gs.acl import CannedACLStrings as CannedGSACLStrings
from boto.s3.acl import CannedACLStrings as CannedS3ACLStrings
from boto.s3.acl import Policy
HEADER_PREFIX_KEY = 'header_prefix'
METADATA_PREFIX_KEY = 'metadata_prefix'
AWS_HEADER_PREFIX = 'x-amz-'
GOOG_HEADER_PREFIX = 'x-goog-'
ACL_HEADER_KEY = 'acl-header'
AUTH_HEADER_KEY = 'auth-header'
COPY_SOURCE_HEADER_KEY = 'copy-source-header'
COPY_SOURCE_VERSION_ID_HEADER_KEY = 'copy-source-version-id-header'
COPY_SOURCE_RANGE_HEADER_KEY = 'copy-source-range-header'
DELETE_MARKER_HEADER_KEY = 'delete-marker-header'
DATE_HEADER_KEY = 'date-header'
METADATA_DIRECTIVE_HEADER_KEY = 'metadata-directive-header'
RESUMABLE_UPLOAD_HEADER_KEY = 'resumable-upload-header'
SECURITY_TOKEN_HEADER_KEY = 'security-token-header'
STORAGE_CLASS_HEADER_KEY = 'storage-class'
MFA_HEADER_KEY = 'mfa-header'
SERVER_SIDE_ENCRYPTION_KEY = 'server-side-encryption-header'
VERSION_ID_HEADER_KEY = 'version-id-header'
STORAGE_COPY_ERROR = 'StorageCopyError'
STORAGE_CREATE_ERROR = 'StorageCreateError'
STORAGE_DATA_ERROR = 'StorageDataError'
STORAGE_PERMISSIONS_ERROR = 'StoragePermissionsError'
STORAGE_RESPONSE_ERROR = 'StorageResponseError'
class Provider(object):
CredentialMap = {
'aws' : ('aws_access_key_id', 'aws_secret_access_key'),
'google' : ('gs_access_key_id', 'gs_secret_access_key'),
}
AclClassMap = {
'aws' : Policy,
'google' : ACL
}
CannedAclsMap = {
'aws' : CannedS3ACLStrings,
'google' : CannedGSACLStrings
}
HostKeyMap = {
'aws' : 's3',
'google' : 'gs'
}
ChunkedTransferSupport = {
'aws' : False,
'google' : True
}
# If you update this map please make sure to put "None" for the
# right-hand-side for any headers that don't apply to a provider, rather
# than simply leaving that header out (which would cause KeyErrors).
HeaderInfoMap = {
'aws' : {
HEADER_PREFIX_KEY : AWS_HEADER_PREFIX,
METADATA_PREFIX_KEY : AWS_HEADER_PREFIX + 'meta-',
ACL_HEADER_KEY : AWS_HEADER_PREFIX + 'acl',
AUTH_HEADER_KEY : 'AWS',
COPY_SOURCE_HEADER_KEY : AWS_HEADER_PREFIX + 'copy-source',
COPY_SOURCE_VERSION_ID_HEADER_KEY : AWS_HEADER_PREFIX +
'copy-source-version-id',
COPY_SOURCE_RANGE_HEADER_KEY : AWS_HEADER_PREFIX +
'copy-source-range',
DATE_HEADER_KEY : AWS_HEADER_PREFIX + 'date',
DELETE_MARKER_HEADER_KEY : AWS_HEADER_PREFIX + 'delete-marker',
METADATA_DIRECTIVE_HEADER_KEY : AWS_HEADER_PREFIX +
'metadata-directive',
RESUMABLE_UPLOAD_HEADER_KEY : None,
SECURITY_TOKEN_HEADER_KEY : AWS_HEADER_PREFIX + 'security-token',
SERVER_SIDE_ENCRYPTION_KEY : AWS_HEADER_PREFIX + 'server-side-encryption',
VERSION_ID_HEADER_KEY : AWS_HEADER_PREFIX + 'version-id',
STORAGE_CLASS_HEADER_KEY : AWS_HEADER_PREFIX + 'storage-class',
MFA_HEADER_KEY : AWS_HEADER_PREFIX + 'mfa',
},
'google' : {
HEADER_PREFIX_KEY : GOOG_HEADER_PREFIX,
METADATA_PREFIX_KEY : GOOG_HEADER_PREFIX + 'meta-',
ACL_HEADER_KEY : GOOG_HEADER_PREFIX + 'acl',
AUTH_HEADER_KEY : 'GOOG1',
COPY_SOURCE_HEADER_KEY : GOOG_HEADER_PREFIX + 'copy-source',
COPY_SOURCE_VERSION_ID_HEADER_KEY : GOOG_HEADER_PREFIX +
'copy-source-version-id',
COPY_SOURCE_RANGE_HEADER_KEY : None,
DATE_HEADER_KEY : GOOG_HEADER_PREFIX + 'date',
DELETE_MARKER_HEADER_KEY : GOOG_HEADER_PREFIX + 'delete-marker',
METADATA_DIRECTIVE_HEADER_KEY : GOOG_HEADER_PREFIX +
'metadata-directive',
RESUMABLE_UPLOAD_HEADER_KEY : GOOG_HEADER_PREFIX + 'resumable',
SECURITY_TOKEN_HEADER_KEY : GOOG_HEADER_PREFIX + 'security-token',
SERVER_SIDE_ENCRYPTION_KEY : None,
# Note that this version header is not to be confused with
# the Google Cloud Storage 'x-goog-api-version' header.
VERSION_ID_HEADER_KEY : GOOG_HEADER_PREFIX + 'version-id',
STORAGE_CLASS_HEADER_KEY : None,
MFA_HEADER_KEY : None,
}
}
ErrorMap = {
'aws' : {
STORAGE_COPY_ERROR : boto.exception.S3CopyError,
STORAGE_CREATE_ERROR : boto.exception.S3CreateError,
STORAGE_DATA_ERROR : boto.exception.S3DataError,
STORAGE_PERMISSIONS_ERROR : boto.exception.S3PermissionsError,
STORAGE_RESPONSE_ERROR : boto.exception.S3ResponseError,
},
'google' : {
STORAGE_COPY_ERROR : boto.exception.GSCopyError,
STORAGE_CREATE_ERROR : boto.exception.GSCreateError,
STORAGE_DATA_ERROR : boto.exception.GSDataError,
STORAGE_PERMISSIONS_ERROR : boto.exception.GSPermissionsError,
STORAGE_RESPONSE_ERROR : boto.exception.GSResponseError,
}
}
def __init__(self, name, access_key=None, secret_key=None,
security_token=None):
self.host = None
self.access_key = access_key
self.secret_key = secret_key
self.security_token = security_token
self.name = name
self.acl_class = self.AclClassMap[self.name]
self.canned_acls = self.CannedAclsMap[self.name]
self.get_credentials(access_key, secret_key)
self.configure_headers()
self.configure_errors()
# allow config file to override default host
host_opt_name = '%s_host' % self.HostKeyMap[self.name]
if config.has_option('Credentials', host_opt_name):
self.host = config.get('Credentials', host_opt_name)
def get_credentials(self, access_key=None, secret_key=None):
access_key_name, secret_key_name = self.CredentialMap[self.name]
if access_key is not None:
self.access_key = access_key
elif os.environ.has_key(access_key_name.upper()):
self.access_key = os.environ[access_key_name.upper()]
elif config.has_option('Credentials', access_key_name):
self.access_key = config.get('Credentials', access_key_name)
if secret_key is not None:
self.secret_key = secret_key
elif os.environ.has_key(secret_key_name.upper()):
self.secret_key = os.environ[secret_key_name.upper()]
elif config.has_option('Credentials', secret_key_name):
self.secret_key = config.get('Credentials', secret_key_name)
if isinstance(self.secret_key, unicode):
# the secret key must be bytes and not unicode to work
# properly with hmac.new (see http://bugs.python.org/issue5285)
self.secret_key = str(self.secret_key)
def configure_headers(self):
header_info_map = self.HeaderInfoMap[self.name]
self.metadata_prefix = header_info_map[METADATA_PREFIX_KEY]
self.header_prefix = header_info_map[HEADER_PREFIX_KEY]
self.acl_header = header_info_map[ACL_HEADER_KEY]
self.auth_header = header_info_map[AUTH_HEADER_KEY]
self.copy_source_header = header_info_map[COPY_SOURCE_HEADER_KEY]
self.copy_source_version_id = header_info_map[
COPY_SOURCE_VERSION_ID_HEADER_KEY]
self.copy_source_range_header = header_info_map[
COPY_SOURCE_RANGE_HEADER_KEY]
self.date_header = header_info_map[DATE_HEADER_KEY]
self.delete_marker = header_info_map[DELETE_MARKER_HEADER_KEY]
self.metadata_directive_header = (
header_info_map[METADATA_DIRECTIVE_HEADER_KEY])
self.security_token_header = header_info_map[SECURITY_TOKEN_HEADER_KEY]
self.resumable_upload_header = (
header_info_map[RESUMABLE_UPLOAD_HEADER_KEY])
self.server_side_encryption_header = header_info_map[SERVER_SIDE_ENCRYPTION_KEY]
self.storage_class_header = header_info_map[STORAGE_CLASS_HEADER_KEY]
self.version_id = header_info_map[VERSION_ID_HEADER_KEY]
self.mfa_header = header_info_map[MFA_HEADER_KEY]
def configure_errors(self):
error_map = self.ErrorMap[self.name]
self.storage_copy_error = error_map[STORAGE_COPY_ERROR]
self.storage_create_error = error_map[STORAGE_CREATE_ERROR]
self.storage_data_error = error_map[STORAGE_DATA_ERROR]
self.storage_permissions_error = error_map[STORAGE_PERMISSIONS_ERROR]
self.storage_response_error = error_map[STORAGE_RESPONSE_ERROR]
def get_provider_name(self):
return self.HostKeyMap[self.name]
def supports_chunked_transfer(self):
return self.ChunkedTransferSupport[self.name]
# Static utility method for getting default Provider.
def get_default():
return Provider('aws')
|
