125 lines
3.8 KiB
Python
125 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import copy
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from synapse.api.constants import RoomVersions
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from synapse.types import EventID
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from synapse.util.stringutils import random_string
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from . import EventBase, FrozenEvent, _event_dict_property
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def get_event_builder(room_version, key_values={}, internal_metadata_dict={}):
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"""Generate an event builder appropriate for the given room version
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Args:
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room_version (str): Version of the room that we're creating an
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event builder for
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key_values (dict): Fields used as the basis of the new event
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internal_metadata_dict (dict): Used to create the `_EventInternalMetadata`
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object.
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Returns:
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EventBuilder
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"""
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if room_version in {
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RoomVersions.V1,
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RoomVersions.V2,
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RoomVersions.VDH_TEST,
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RoomVersions.STATE_V2_TEST,
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}:
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return EventBuilder(key_values, internal_metadata_dict)
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else:
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raise Exception(
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"No event format defined for version %r" % (room_version,)
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)
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class EventBuilder(EventBase):
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def __init__(self, key_values={}, internal_metadata_dict={}):
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signatures = copy.deepcopy(key_values.pop("signatures", {}))
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unsigned = copy.deepcopy(key_values.pop("unsigned", {}))
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super(EventBuilder, self).__init__(
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key_values,
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signatures=signatures,
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unsigned=unsigned,
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internal_metadata_dict=internal_metadata_dict,
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)
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event_id = _event_dict_property("event_id")
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state_key = _event_dict_property("state_key")
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type = _event_dict_property("type")
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def build(self):
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return FrozenEvent.from_event(self)
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class EventBuilderFactory(object):
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def __init__(self, clock, hostname):
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self.clock = clock
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self.hostname = hostname
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self.event_id_count = 0
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def create_event_id(self):
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i = str(self.event_id_count)
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self.event_id_count += 1
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local_part = str(int(self.clock.time())) + i + random_string(5)
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e_id = EventID(local_part, self.hostname)
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return e_id.to_string()
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def new(self, room_version, key_values={}):
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"""Generate an event builder appropriate for the given room version
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Args:
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room_version (str): Version of the room that we're creating an
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event builder for
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key_values (dict): Fields used as the basis of the new event
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Returns:
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EventBuilder
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"""
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# There's currently only the one event version defined
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if room_version not in {
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RoomVersions.V1,
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RoomVersions.V2,
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RoomVersions.VDH_TEST,
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RoomVersions.STATE_V2_TEST,
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}:
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raise Exception(
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"No event format defined for version %r" % (room_version,)
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)
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key_values["event_id"] = self.create_event_id()
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time_now = int(self.clock.time_msec())
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key_values.setdefault("origin", self.hostname)
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key_values.setdefault("origin_server_ts", time_now)
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key_values.setdefault("unsigned", {})
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age = key_values["unsigned"].pop("age", 0)
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key_values["unsigned"].setdefault("age_ts", time_now - age)
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key_values["signatures"] = {}
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return EventBuilder(key_values=key_values,)
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