forked from python-telegram-bot/python-telegram-bot
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathpicklepersistence.py
More file actions
235 lines (211 loc) · 9.37 KB
/
Copy pathpicklepersistence.py
File metadata and controls
235 lines (211 loc) · 9.37 KB
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
#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2018
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program. If not, see [http://www.gnu.org/licenses/].
"""This module contains the PicklePersistence class."""
import pickle
from collections import defaultdict
from telegram.ext import BasePersistence
class PicklePersistence(BasePersistence):
"""Using python's builtin pickle for making you bot persistent.
Attributes:
filename (:obj:`str`): The filename for storing the pickle files. When :attr:`single_file`
is false this will be used as a prefix.
store_user_data (:obj:`bool`): Optional. Whether user_data should be saved by this
persistence class.
store_chat_data (:obj:`bool`): Optional. Whether user_data should be saved by this
persistence class.
single_file (:obj:`bool`): Optional. When ``False`` will store 3 sperate files of
`filename_user_data`, `filename_chat_data` and `filename_conversations`. Default is
``True``.
on_flush (:obj:`bool`): Optional. When ``True`` will only save to file when :meth:`flush`
is called and keep data in memory until that happens. When False will store data on any
transaction. Default is ``False``.
Args:
filename (:obj:`str`): The filename for storing the pickle files. When :attr:`single_file`
is false this will be used as a prefix.
store_user_data (:obj:`bool`, optional): Whether user_data should be saved by this
persistence class. Default is ``True``.
store_chat_data (:obj:`bool`, optional): Whether user_data should be saved by this
persistence class. Default is ``True``.
single_file (:obj:`bool`, optional): When ``False`` will store 3 sperate files of
`filename_user_data`, `filename_chat_data` and `filename_conversations`. Default is
``True``.
on_flush (:obj:`bool`, optional): When ``True`` will only save to file when :meth:`flush`
is called and keep data in memory until that happens. When False will store data on any
transaction. Default is ``False``.
"""
def __init__(self, filename, store_user_data=True, store_chat_data=True, singe_file=True,
on_flush=False):
self.filename = filename
self.store_user_data = store_user_data
self.store_chat_data = store_chat_data
self.single_file = singe_file
self.on_flush = on_flush
self.user_data = None
self.chat_data = None
self.conversations = None
def load_singlefile(self):
try:
filename = self.filename
with open(self.filename, "rb") as f:
all = pickle.load(f)
self.user_data = defaultdict(dict, all['user_data'])
self.chat_data = defaultdict(dict, all['chat_data'])
self.conversations = all['conversations']
except IOError:
self.conversations = {}
self.user_data = defaultdict(dict)
self.chat_data = defaultdict(dict)
except pickle.UnpicklingError:
raise TypeError("File {} does not contain valid pickle data".format(filename))
except Exception:
raise TypeError("Something went wrong unpickling {}".format(filename))
def load_file(self, filename):
try:
with open(filename, "rb") as f:
return pickle.load(f)
except IOError:
return None
except pickle.UnpicklingError:
raise TypeError("File {} does not contain valid pickle data".format(filename))
except Exception:
raise TypeError("Something went wrong unpickling {}".format(filename))
def dump_singlefile(self):
with open(self.filename, "wb") as f:
all = {'conversations': self.conversations, 'user_data': self.user_data,
'chat_data': self.chat_data}
pickle.dump(all, f)
def dump_file(self, filename, data):
with open(filename, "wb") as f:
pickle.dump(data, f)
def get_user_data(self):
"""Returns the user_data from the pickle file if it exsists or an empty defaultdict.
Returns:
:obj:`defaultdict`: The restored user data.
"""
if self.user_data:
pass
elif not self.single_file:
filename = "{}_user_data".format(self.filename)
data = self.load_file(filename)
if not data:
data = defaultdict(dict)
else:
data = defaultdict(dict, data)
self.user_data = data
else:
self.load_singlefile()
return self.user_data.copy()
def get_chat_data(self):
"""Returns the chat_data from the pickle file if it exsists or an empty defaultdict.
Returns:
:obj:`defaultdict`: The restored chat data.
"""
if self.chat_data:
pass
elif not self.single_file:
filename = "{}_chat_data".format(self.filename)
data = self.load_file(filename)
if not data:
data = defaultdict(dict)
else:
data = defaultdict(dict, data)
self.chat_data = data
else:
self.load_singlefile()
return self.chat_data.copy()
def get_conversations(self, name):
"""Returns the conversations from the pickle file if it exsists or an empty defaultdict.
Args:
name (:obj:`str`): The handlers name.
Returns:
:obj:`dict`: The restored conversations for the handler.
"""
if self.conversations:
pass
elif not self.single_file:
filename = "{}_conversations".format(self.filename)
data = self.load_file(filename)
if not data:
data = {name: {}}
self.conversations = data
else:
self.load_singlefile()
return self.conversations.get(name, {}).copy()
def update_conversation(self, name, key, new_state):
"""Will update the conversations for the given handler and depending on :attr:`on_flush`
save the pickle file.
Args:
name (:obj:`str`): The handlers name.
key (:obj:`tuple`): The key the state is changed for.
new_state (:obj:`tuple` | :obj:`any`): The new state for the given key.
"""
if self.conversations.setdefault(name, {}).get(key) == new_state:
return
self.conversations[name][key] = new_state
if not self.on_flush:
if not self.single_file:
filename = "{}_conversations".format(self.filename)
self.dump_file(filename, self.conversations)
else:
self.dump_singlefile()
def update_user_data(self, user_id, data):
"""Will update the user_data (if changed) and depending on :attr:`on_flush` save the
pickle file.
Args:
user_id (:obj:`int`): The user the data might have been changed for.
data (:obj:`dict`): The :attr:`telegram.ext.dispatcher.user_data`[user_id].
"""
if self.user_data.get(user_id) == data:
return
self.user_data[user_id] = data
if not self.on_flush:
if not self.single_file:
filename = "{}_user_data".format(self.filename)
self.dump_file(filename, self.user_data)
else:
self.dump_singlefile()
def update_chat_data(self, chat_id, data):
"""Will update the chat_data (if changed) and depending on :attr:`on_flush` save the
pickle file.
Args:
chat_id (:obj:`int`): The chat the data might have been changed for.
data (:obj:`dict`): The :attr:`telegram.ext.dispatcher.chat_data`[chat_id].
"""
if self.chat_data.get(chat_id) == data:
return
self.chat_data[chat_id] = data
if not self.on_flush:
if not self.single_file:
filename = "{}_chat_data".format(self.filename)
self.dump_file(filename, self.chat_data)
else:
self.dump_singlefile()
def flush(self):
"""If :attr:`on_flush` is set to ``True``. Will save all data in memory to pickle file(s). If
it's ``False`` will just pass.
"""
if not self.on_flush:
pass
else:
if self.single_file:
self.dump_singlefile()
else:
self.dump_file("{}_user_data".format(self.filename), self.user_data)
self.dump_file("{}_chat_data".format(self.filename), self.chat_data)
self.dump_file("{}_conversations".format(self.filename), self.conversations)