-
Notifications
You must be signed in to change notification settings - Fork 0
/
db.py
311 lines (290 loc) · 8.38 KB
/
db.py
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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
from google.appengine.api.users import User
from google.appengine.ext.db import metadata
from google.appengine.api import users
from google.appengine.ext import db
from google.appengine.ext.db.polymodel import PolyModel
from datetime import datetime
import webapp2
import logging
import json
import datetime
import time
import re
class console():
def log(self, stuff):
logging.warn(stuff)
console = console()
def ts(d):
return long((d - datetime.datetime.utcfromtimestamp(0)).total_seconds()*1000)
def dt(n):
return datetime.datetime.utcfromtimestamp(float(n)*0.001)
def totimestamp(d):
return '(new Date({0:d}))'.format(ts(d))
def fromtimestamp(s):
if re.match('^\(new Date\(\d+\)\)$',s):
return dt(re.sub('\D+','',s))
return s
def apply(a, b):
if type(a) is unicode:
a = fromtimestamp(a)
try:
a = json.loads(a)
except:
pass
if type(b) is unicode:
b = fromtimestamp(b)
try:
b = json.loads(b)
except:
pass
if type(a) is dict and type(b) is dict:
for key in b:
if key in a:
a[key] = apply(a, b)
if a[key] == None:
del a[key]
else:
a[key] = b[key]
else:
return b
return a
class JsonProperty(db.TextProperty):
def validate(self, value):
return value
def get_value_for_datastore(self, model_instance):
result = super(JsonProperty, self).get_value_for_datastore(model_instance)
result = json.dumps(result)
return db.Text(result)
def make_value_from_datastore(self, value):
try:
value = json.loads(str(value))
except:
pass
return super(JsonProperty, self).make_value_from_datastore(value)
def apply(self,json):
return apply(self,json)
class actions(webapp2.RequestHandler):
def __init__(self, request, response):
super(self.__class__, self).__init__(request, response)
self.result = { 'warnings': [], 'errors': [], 'data': [] }
self.admin = users.is_current_user_admin()
self.user = None
self.admin = False
self.client = None
try:
self.body = json.loads(self.request.body)
self.auth()
except:
self.body = None
self.error('500: Request Body is not valid json.')
def post(self):
console.log(self.body)
console.log(self.client)
if not self.client is None:
if 'updates' in self.body:
keys = []
for key in self.body['updates']:
try:
keys.append(db.Key(key))
except:
pass
entities = Entity.get(keys)
for entity in entities:
entity.execute(self.body['updates'][str(entity.key())])
db.put(entities)
for entity in Entity.gql('updated > :updated', updated = self.client.updated):
self.data(entity)
if 'creates' in self.body:
entities = []
for name in self.body['creates']:
kind = db.class_for_kind(name)
for data in self.body['create'][name]:
entity = kind(data = data)
entities.append(entity)
db.put(entities)
for entity in entities:
self.data(entity)
self.client.updated = datetime.utcnow()
self.client.put()
self.data(self.client)
return self.out()
'''
kinds = {}
entities = []
updates = {}
nokeys = []
keys = []
if not self.body or not 'data' in self.body:
self.error('500: body or data of ajax call is missing or invalid.')
return self.out()
for update in self.body['data']:
if not '_kind' in update:
update['_kind'] = 'Entity'
try:
kinds[update['_kind']] = db.class_for_kind(update['_kind'])
except:
self.error('500: Invalid Kind: ' + str(update['_kind']))
if not '_key' in update:
ent = kinds[update['_kind']]()
ent._data = update
entities.append(ent)
else:
try:
key = db.Key(str(update['_key']))
keys.append(key)
updates[str(key)] = update
except:
self.error('500: Invalid Database Key Format: ' + str(update['_key']))
db.put(entities)
for kind in kinds:
entities += kinds[kind].get(keys)
for entity in entities:
entity._server = self
if str(entity.key()) in updates:
entity._data = updates[str(entity.key())]
for key in entity._data:
if type(entity._data[key]) is unicode:
entity._data[key] = fromtimestamp(entity._data[key])
if not '_calls' in entity._data or not type(entity._data['_calls']) is list:
entity._data['_calls'] = []
if not 'update' in entity._data['_calls']:
entity._data['_calls'].append('update')
entitydir = dir(entity)
for call in entity._data['_calls']:
if type(call) is unicode or type(call) is str:
calldir = 'client_' + re.sub('\W', '', str(call))
if calldir in entitydir:
getattr(entity, calldir)()
db.put(entities)
if 'updated' in self.body:
for entity in Entity.gql(
'WHERE _updated > :updated '
'AND _owner = :user',
updated = fromtimestamp(self.body['updated']),
user = users.get_current_user()):
self.data(entity)
else:
for entity in Entity.all():
self.data(entity)
self.out()
'''
def data(self, data):
self.result['data'].append(data)
def warn(self, warning):
self.result['warnings'].append(str(warning))
def error(self, error):
self.result['errors'].append(str(error))
def out(self):
self.result['ping'] = ts(datetime.datetime.utcnow())
data = []
for item in self.result['data']:
if 'out' in dir(item):
data.append(item.out())
else:
data.append(item)
self.result['data'] = data
self.response.out.write(json.dumps(self.result))
def auth(self):
self.user = users.get_current_user()
if not self.user is None:
self.client = Client.gql('WHERE _owner = :owner', owner = self.user).get()
if self.client is None:
self.client = Client()
self.client.put()
class Entity(PolyModel):
def __init__(self):
super(self.__class__, self).__init__(self)
self.stream = None
self.server = None
self.buffer = (ts(datetime.utcnow()) - 1000)
self.type = (self.__class__.__name__)
creator = db.UserProperty(auto_current_user_add = True)
owner = db.UserProperty(auto_current_user_add = True)
updated = db.DateTimeProperty(auto_now = True)
changes = JsonProperty(default = [])
data = JsonProperty(default = {})
def execute(self):
if not self.server is None and not self.stream is None:
methods = dir(self)
self.applybuffer([])
changes = []
for change in sorted(self.stream, key = attrgetter('_')):
console.log((self.key()) + ': ' + change['_'])
if change['_'] < self.server.ping:
console.log((self.key()) + ' is now ' + self.server.ping)
change['_'] = self.server.ping
for property in change:
if '_client_' + property in methods:
getattr('_client_' + property, self)(change, data)
changes.append(change)
self.applybuffer(changes)
def applybuffer(self, changes):
changes = sorted(self.changes + changes, key = attrgetter('_'))
results = []
data = self.data
for change in changes:
if change['_'] < self.buffer:
data = apply(data, change)
else:
results.append(change)
self.data = data
self.updated = datetime.utcnow()
self.changes = results
class Client(Entity):
def __init__(self):
super(self.__class__, self).__init__(self)
self._data = None
self._server = None
'''
def client_update(self):
if self._owner == users.get_current_user():
self._updated = datetime.datetime.utcnow()
current = self.dynamic_properties()
for property in self._data:
if not '_' in property:
value = self._data[property]
old = None
if property in current:
old = entity.__getattribute__(name)
result = apply(old, value)
if type(result) is type(old):
self.__setattr__(property, result)
else:
if isinstance(result, datetime.datetime):
self.__setattr__(property, result)
elif isinstance(result, unicode):
self.__setattr__(property, db.TextProperty(result))
else:
self.__setattr__(property, db.TextProperty(json.dumps(result)))
else:
self._server.warning('401: '+str(self.key())+': You are not autorized to modify this object.')
def out(self):
id = str(self.key())
if self._data and '_id' in self._data:
id = self._data['_id']
out = {
'_id': id,
'_key': str(self.key()),
'_updated': totimestamp(self._updated),
}
for name in self.dynamic_properties():
value = self.__getattribute__(name)
try:
out[name] = json.loads(value)
except:
try:
out[name] = totimestamp(value)
except:
try:
out[name] = value.nick()
except:
try:
json.dumps(value)
out[name] = value
except:
out[name] = str(value)
return out
'''
controller = webapp2.WSGIApplication([
('/db/.*', actions),
], debug = True)