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
|
# License?
"""A U1DB implementation that uses OpenStack Swift as its persistence layer."""
try:
import simplejson as json
except ImportError:
import json # noqa
from u1db.backends import CommonBackend, CommonSyncTarget
from u1db import (
Document,
errors,
query_parser,
vectorclock,
)
from swiftclient import client
import base64
class OpenStackDatabase(CommonBackend):
"""A U1DB implementation that uses OpenStack as its persistence layer."""
def __init__(self, auth_url, user, auth_key):
"""Create a new OpenStack data container."""
self._auth_url = auth_url
self._user = user
self._auth_key = auth_key
self.set_document_factory(LeapDocument)
self._connection = swiftclient.Connection(self._auth_url, self._user,
self._auth_key)
#-------------------------------------------------------------------------
# implemented methods from Database
#-------------------------------------------------------------------------
def set_document_factory(self, factory):
self._factory = factory
def set_document_size_limit(self, limit):
raise NotImplementedError(self.set_document_size_limit)
def whats_changed(self, old_generation=0):
raise NotImplementedError(self.whats_changed)
def get_doc(self, doc_id, include_deleted=False):
raise NotImplementedError(self.get_doc)
def get_all_docs(self, include_deleted=False):
"""Get all documents from the database."""
raise NotImplementedError(self.get_all_docs)
def put_doc(self, doc):
raise NotImplementedError(self.put_doc)
def delete_doc(self, doc):
raise NotImplementedError(self.delete_doc)
# start of index-related methods: these are not supported by this backend.
def create_index(self, index_name, *index_expressions):
return False
def delete_index(self, index_name):
return False
def list_indexes(self):
return []
def get_from_index(self, index_name, *key_values):
return []
def get_range_from_index(self, index_name, start_value=None,
end_value=None):
return []
def get_index_keys(self, index_name):
return []
# end of index-related methods: these are not supported by this backend.
def get_doc_conflicts(self, doc_id):
return []
def resolve_doc(self, doc, conflicted_doc_revs):
raise NotImplementedError(self.resolve_doc)
def get_sync_target(self):
return OpenStackSyncTarget(self)
def close(self):
raise NotImplementedError(self.close)
def sync(self, url, creds=None, autocreate=True):
raise NotImplementedError(self.close)
def _get_replica_gen_and_trans_id(self, other_replica_uid):
raise NotImplementedError(self._get_replica_gen_and_trans_id)
def _set_replica_gen_and_trans_id(self, other_replica_uid,
other_generation, other_transaction_id):
raise NotImplementedError(self._set_replica_gen_and_trans_id)
#-------------------------------------------------------------------------
# implemented methods from CommonBackend
#-------------------------------------------------------------------------
def _get_generation(self):
raise NotImplementedError(self._get_generation)
def _get_generation_info(self):
raise NotImplementedError(self._get_generation_info)
def _get_doc(self, doc_id, check_for_conflicts=False):
"""Get just the document content, without fancy handling."""
raise NotImplementedError(self._get_doc)
def _has_conflicts(self, doc_id):
raise NotImplementedError(self._has_conflicts)
def _get_transaction_log(self):
raise NotImplementedError(self._get_transaction_log)
def _put_and_update_indexes(self, doc_id, old_doc, new_rev, content):
raise NotImplementedError(self._put_and_update_indexes)
def _get_trans_id_for_gen(self, generation):
raise NotImplementedError(self._get_trans_id_for_gen)
#-------------------------------------------------------------------------
# OpenStack specific methods
#-------------------------------------------------------------------------
def _is_initialized(self, c):
raise NotImplementedError(self._is_initialized)
def _initialize(self, c):
raise NotImplementedError(self._initialize)
def _get_auth(self):
self._url, self._auth_token = self._connection.get_auth(self._auth_url,
self._user,
self._auth_key)
return self._url, self.auth_token
class LeapDocument(Document):
def get_content_encrypted(self):
"""
Returns document's json serialization encrypted with user's public key.
"""
# TODO: replace for openpgp encryption with users's pub key.
return base64.b64encode(self.get_json())
def set_content_encrypted(self):
"""
Set document's content based on encrypted version of json string.
"""
# TODO:
# - replace for openpgp decryption using user's priv key.
# - raise error if unsuccessful.
return self.set_json(base64.b64decode(self.get_json()))
class OpenStackSyncTarget(CommonSyncTarget):
def get_sync_info(self, source_replica_uid):
raise NotImplementedError(self.get_sync_info)
def record_sync_info(self, source_replica_uid, source_replica_generation,
source_replica_transaction_id):
raise NotImplementedError(self.record_sync_info)
|
