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
|
# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
#
# 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 copy
from synapse.api.constants import RoomVersions
from synapse.types import EventID
from synapse.util.stringutils import random_string
from . import EventBase, FrozenEvent, _event_dict_property
def get_event_builder(room_version, key_values={}, internal_metadata_dict={}):
"""Generate an event builder appropriate for the given room version
Args:
room_version (str): Version of the room that we're creating an
event builder for
key_values (dict): Fields used as the basis of the new event
internal_metadata_dict (dict): Used to create the `_EventInternalMetadata`
object.
Returns:
EventBuilder
"""
if room_version in {
RoomVersions.V1,
RoomVersions.V2,
RoomVersions.VDH_TEST,
RoomVersions.STATE_V2_TEST,
}:
return EventBuilder(key_values, internal_metadata_dict)
else:
raise Exception(
"No event format defined for version %r" % (room_version,)
)
class EventBuilder(EventBase):
def __init__(self, key_values={}, internal_metadata_dict={}):
signatures = copy.deepcopy(key_values.pop("signatures", {}))
unsigned = copy.deepcopy(key_values.pop("unsigned", {}))
super(EventBuilder, self).__init__(
key_values,
signatures=signatures,
unsigned=unsigned,
internal_metadata_dict=internal_metadata_dict,
)
event_id = _event_dict_property("event_id")
state_key = _event_dict_property("state_key")
type = _event_dict_property("type")
def build(self):
return FrozenEvent.from_event(self)
class EventBuilderFactory(object):
def __init__(self, clock, hostname):
self.clock = clock
self.hostname = hostname
self.event_id_count = 0
def create_event_id(self):
i = str(self.event_id_count)
self.event_id_count += 1
local_part = str(int(self.clock.time())) + i + random_string(5)
e_id = EventID(local_part, self.hostname)
return e_id.to_string()
def new(self, room_version, key_values={}):
"""Generate an event builder appropriate for the given room version
Args:
room_version (str): Version of the room that we're creating an
event builder for
key_values (dict): Fields used as the basis of the new event
Returns:
EventBuilder
"""
# There's currently only the one event version defined
if room_version not in {
RoomVersions.V1,
RoomVersions.V2,
RoomVersions.VDH_TEST,
RoomVersions.STATE_V2_TEST,
}:
raise Exception(
"No event format defined for version %r" % (room_version,)
)
key_values["event_id"] = self.create_event_id()
time_now = int(self.clock.time_msec())
key_values.setdefault("origin", self.hostname)
key_values.setdefault("origin_server_ts", time_now)
key_values.setdefault("unsigned", {})
age = key_values["unsigned"].pop("age", 0)
key_values["unsigned"].setdefault("age_ts", time_now - age)
key_values["signatures"] = {}
return EventBuilder(key_values=key_values,)
|
