synapse-product/synapse/events/builder.py

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# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
# 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.
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import copy
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from synapse.types import EventID
from synapse.util.stringutils import random_string
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from . import EventBase, FrozenEvent, _event_dict_property
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class EventBuilder(EventBase):
def __init__(self, key_values={}, internal_metadata_dict={}):
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signatures = copy.deepcopy(key_values.pop("signatures", {}))
unsigned = copy.deepcopy(key_values.pop("unsigned", {}))
super(EventBuilder, self).__init__(
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key_values,
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signatures=signatures,
unsigned=unsigned,
internal_metadata_dict=internal_metadata_dict,
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)
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event_id = _event_dict_property("event_id")
state_key = _event_dict_property("state_key")
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):
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)
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return e_id.to_string()
def new(self, key_values={}):
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)
key_values.setdefault("origin_server_ts", time_now)
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key_values.setdefault("unsigned", {})
age = key_values["unsigned"].pop("age", 0)
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,)