synapse-product/synapse/events/builder.py
2014-12-02 11:40:22 +00:00

74 lines
2.1 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2014 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.
from . import Event
from synapse.types import EventID
from synapse.util.stringutils import random_string
class EventBuilder(object):
def __init__(self, key_values={}):
self._event_dict = dict(key_values)
self._metadata = {}
def update_event_key(self, key, value):
self._event_dict[key] = value
def update_event_keys(self, other_dict):
self._event_dict.update(other_dict)
def update_internal_key(self, key, value):
self._metadata[key] = value
def build(self):
return Event(
self._event_dict,
self._metadata,
)
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.create(local_part, self.hostname)
return e_id.to_string()
def new(self, key_values={}):
if "event_id" not in key_values:
key_values["event_id"] = self.create_event_id()
time_now = self.clock.time_msec()
key_values.setdefault("origin", self.hostname)
key_values.setdefault("origin_server_ts", time_now)
if "unsigned" in key_values:
age = key_values["unsigned"].pop("age", 0)
key_values["unsigned"].setdefault("age_ts", time_now - age)
return EventBuilder(key_values=key_values,)