2017-03-27 15:58:26 +02:00
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# -*- coding: utf-8 -*-
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# Copyright 2017 Vector Creations Ltd
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2019-03-27 10:58:42 +01:00
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# Copyright 2019 New Vector Ltd
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2017-03-27 15:58:26 +02:00
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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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2019-03-25 17:38:05 +01:00
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import itertools
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2017-03-27 15:58:26 +02:00
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import logging
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2018-07-09 08:09:20 +02:00
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from collections import namedtuple
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2020-03-20 15:40:47 +01:00
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from typing import Any, List, Optional, Tuple
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2020-01-22 11:37:00 +01:00
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import attr
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2017-03-27 15:58:26 +02:00
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2020-03-20 15:40:47 +01:00
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from synapse.types import JsonDict
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2017-03-27 15:58:26 +02:00
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logger = logging.getLogger(__name__)
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2018-02-14 14:53:02 +01:00
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MAX_EVENTS_BEHIND = 500000
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2017-03-27 15:58:26 +02:00
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class Stream(object):
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"""Base class for the streams.
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Provides a `get_updates()` function that returns new updates since the last
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time it was called.
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2017-03-27 15:58:26 +02:00
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"""
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2019-06-20 11:32:02 +02:00
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2020-01-14 15:08:06 +01:00
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NAME = None # type: str # The name of the stream
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# The type of the row. Used by the default impl of parse_row.
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ROW_TYPE = None # type: Any
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2017-03-27 15:58:26 +02:00
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2019-03-27 08:40:32 +01:00
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@classmethod
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def parse_row(cls, row):
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"""Parse a row received over replication
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By default, assumes that the row data is an array object and passes its contents
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to the constructor of the ROW_TYPE for this stream.
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Args:
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row: row data from the incoming RDATA command, after json decoding
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Returns:
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ROW_TYPE object for this stream
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"""
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return cls.ROW_TYPE(*row)
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2017-03-27 15:58:26 +02:00
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def __init__(self, hs):
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# The token from which we last asked for updates
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self.last_token = self.current_token()
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2017-04-04 14:19:26 +02:00
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def discard_updates_and_advance(self):
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"""Called when the stream should advance but the updates would be discarded,
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e.g. when there are no currently connected workers.
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"""
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self.last_token = self.current_token()
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2017-04-04 14:19:26 +02:00
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2020-01-16 10:16:12 +01:00
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async def get_updates(self):
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"""Gets all updates since the last time this function was called (or
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since the stream was constructed if it hadn't been called before).
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Returns:
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Deferred[Tuple[List[Tuple[int, Any]], int]:
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Resolves to a pair ``(updates, current_token)``, where ``updates`` is a
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list of ``(token, row)`` entries. ``row`` will be json-serialised and
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sent over the replication steam.
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"""
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updates, current_token = await self.get_updates_since(self.last_token)
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self.last_token = current_token
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2019-08-30 17:28:26 +02:00
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return updates, current_token
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2020-03-20 15:40:47 +01:00
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async def get_updates_since(
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self, from_token: int
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) -> Tuple[List[Tuple[int, JsonDict]], int]:
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"""Like get_updates except allows specifying from when we should
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stream updates
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Returns:
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Resolves to a pair `(updates, new_last_token)`, where `updates` is
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a list of `(token, row)` entries and `new_last_token` is the new
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position in stream.
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"""
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if from_token in ("NOW", "now"):
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return [], self.current_token()
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current_token = self.current_token()
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from_token = int(from_token)
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if from_token == current_token:
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return [], current_token
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2017-03-27 15:58:26 +02:00
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2020-03-20 15:40:47 +01:00
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rows = await self.update_function(
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from_token, current_token, limit=MAX_EVENTS_BEHIND + 1
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)
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2020-03-20 15:40:47 +01:00
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# never turn more than MAX_EVENTS_BEHIND + 1 into updates.
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rows = itertools.islice(rows, MAX_EVENTS_BEHIND + 1)
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2019-03-27 22:58:03 +01:00
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updates = [(row[0], row[1:]) for row in rows]
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2019-03-25 17:38:05 +01:00
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# check we didn't get more rows than the limit.
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# doing it like this allows the update_function to be a generator.
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if len(updates) >= MAX_EVENTS_BEHIND:
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raise Exception("stream %s has fallen behind" % (self.NAME))
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2020-03-20 15:40:47 +01:00
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# The update function didn't hit the limit, so we must have got all
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# the updates to `current_token`, and can return that as our new
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# stream position.
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return updates, current_token
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def current_token(self):
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"""Gets the current token of the underlying streams. Should be provided
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by the sub classes
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Returns:
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int
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"""
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raise NotImplementedError()
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def update_function(self, from_token, current_token, limit):
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"""Get updates between from_token and to_token.
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Returns:
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2017-03-31 12:19:24 +02:00
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Deferred(list(tuple)): the first entry in the tuple is the token for
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that update, and the rest of the tuple gets used to construct
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a ``ROW_TYPE`` instance
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"""
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raise NotImplementedError()
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class BackfillStream(Stream):
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"""We fetched some old events and either we had never seen that event before
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or it went from being an outlier to not.
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"""
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2019-06-20 11:32:02 +02:00
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2020-03-23 14:59:11 +01:00
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BackfillStreamRow = namedtuple(
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"BackfillStreamRow",
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(
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"event_id", # str
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"room_id", # str
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"type", # str
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"state_key", # str, optional
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"redacts", # str, optional
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"relates_to", # str, optional
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),
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)
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2017-03-27 15:58:26 +02:00
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NAME = "backfill"
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ROW_TYPE = BackfillStreamRow
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def __init__(self, hs):
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store = hs.get_datastore()
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2020-01-14 15:08:06 +01:00
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self.current_token = store.get_current_backfill_token # type: ignore
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self.update_function = store.get_all_new_backfill_event_rows # type: ignore
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super(BackfillStream, self).__init__(hs)
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class PresenceStream(Stream):
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PresenceStreamRow = namedtuple(
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"PresenceStreamRow",
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(
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"user_id", # str
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"state", # str
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"last_active_ts", # int
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"last_federation_update_ts", # int
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"last_user_sync_ts", # int
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"status_msg", # str
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"currently_active", # bool
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),
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)
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NAME = "presence"
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ROW_TYPE = PresenceStreamRow
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def __init__(self, hs):
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store = hs.get_datastore()
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presence_handler = hs.get_presence_handler()
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2020-01-14 15:08:06 +01:00
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self.current_token = store.get_current_presence_token # type: ignore
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self.update_function = presence_handler.get_all_presence_updates # type: ignore
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super(PresenceStream, self).__init__(hs)
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class TypingStream(Stream):
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TypingStreamRow = namedtuple(
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"TypingStreamRow", ("room_id", "user_ids") # str # list(str)
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)
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NAME = "typing"
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ROW_TYPE = TypingStreamRow
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def __init__(self, hs):
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typing_handler = hs.get_typing_handler()
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2020-01-14 15:08:06 +01:00
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self.current_token = typing_handler.get_current_token # type: ignore
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self.update_function = typing_handler.get_all_typing_updates # type: ignore
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super(TypingStream, self).__init__(hs)
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class ReceiptsStream(Stream):
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ReceiptsStreamRow = namedtuple(
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"ReceiptsStreamRow",
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(
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"room_id", # str
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"receipt_type", # str
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"user_id", # str
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"event_id", # str
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"data", # dict
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),
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)
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NAME = "receipts"
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ROW_TYPE = ReceiptsStreamRow
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def __init__(self, hs):
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store = hs.get_datastore()
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2020-01-14 15:08:06 +01:00
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self.current_token = store.get_max_receipt_stream_id # type: ignore
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self.update_function = store.get_all_updated_receipts # type: ignore
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super(ReceiptsStream, self).__init__(hs)
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class PushRulesStream(Stream):
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"""A user has changed their push rules
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"""
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PushRulesStreamRow = namedtuple("PushRulesStreamRow", ("user_id",)) # str
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2017-03-27 15:58:26 +02:00
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NAME = "push_rules"
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ROW_TYPE = PushRulesStreamRow
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def __init__(self, hs):
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self.store = hs.get_datastore()
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super(PushRulesStream, self).__init__(hs)
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def current_token(self):
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push_rules_token, _ = self.store.get_push_rules_stream_token()
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return push_rules_token
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2020-01-16 10:16:12 +01:00
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async def update_function(self, from_token, to_token, limit):
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rows = await self.store.get_all_push_rule_updates(from_token, to_token, limit)
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return [(row[0], row[2]) for row in rows]
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class PushersStream(Stream):
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"""A user has added/changed/removed a pusher
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"""
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PushersStreamRow = namedtuple(
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"PushersStreamRow",
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("user_id", "app_id", "pushkey", "deleted"), # str # str # str # bool
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)
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2017-03-27 15:58:26 +02:00
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NAME = "pushers"
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ROW_TYPE = PushersStreamRow
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def __init__(self, hs):
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store = hs.get_datastore()
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2020-01-14 15:08:06 +01:00
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self.current_token = store.get_pushers_stream_token # type: ignore
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self.update_function = store.get_all_updated_pushers_rows # type: ignore
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super(PushersStream, self).__init__(hs)
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class CachesStream(Stream):
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"""A cache was invalidated on the master and no other stream would invalidate
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the cache on the workers
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"""
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2019-06-20 11:32:02 +02:00
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2020-03-23 14:59:11 +01:00
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@attr.s
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class CachesStreamRow:
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"""Stream to inform workers they should invalidate their cache.
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Attributes:
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cache_func: Name of the cached function.
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keys: The entry in the cache to invalidate. If None then will
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invalidate all.
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invalidation_ts: Timestamp of when the invalidation took place.
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"""
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cache_func = attr.ib(type=str)
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keys = attr.ib(type=Optional[List[Any]])
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invalidation_ts = attr.ib(type=int)
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2017-03-27 15:58:26 +02:00
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NAME = "caches"
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ROW_TYPE = CachesStreamRow
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def __init__(self, hs):
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store = hs.get_datastore()
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2020-01-14 15:08:06 +01:00
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self.current_token = store.get_cache_stream_token # type: ignore
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self.update_function = store.get_all_updated_caches # type: ignore
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super(CachesStream, self).__init__(hs)
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class PublicRoomsStream(Stream):
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"""The public rooms list changed
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"""
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PublicRoomsStreamRow = namedtuple(
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"PublicRoomsStreamRow",
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(
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"room_id", # str
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"visibility", # str
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"appservice_id", # str, optional
|
|
|
|
"network_id", # str, optional
|
|
|
|
),
|
|
|
|
)
|
|
|
|
|
2017-03-27 15:58:26 +02:00
|
|
|
NAME = "public_rooms"
|
|
|
|
ROW_TYPE = PublicRoomsStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = store.get_current_public_room_stream_id # type: ignore
|
|
|
|
self.update_function = store.get_all_new_public_rooms # type: ignore
|
2017-03-27 15:58:26 +02:00
|
|
|
|
|
|
|
super(PublicRoomsStream, self).__init__(hs)
|
|
|
|
|
|
|
|
|
|
|
|
class DeviceListsStream(Stream):
|
2020-02-28 12:24:05 +01:00
|
|
|
"""Either a user has updated their devices or a remote server needs to be
|
|
|
|
told about a device update.
|
2017-03-27 15:58:26 +02:00
|
|
|
"""
|
2019-06-20 11:32:02 +02:00
|
|
|
|
2020-03-23 14:59:11 +01:00
|
|
|
@attr.s
|
|
|
|
class DeviceListsStreamRow:
|
|
|
|
entity = attr.ib(type=str)
|
|
|
|
|
2017-03-27 15:58:26 +02:00
|
|
|
NAME = "device_lists"
|
|
|
|
ROW_TYPE = DeviceListsStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = store.get_device_stream_token # type: ignore
|
|
|
|
self.update_function = store.get_all_device_list_changes_for_remotes # type: ignore
|
2017-03-27 15:58:26 +02:00
|
|
|
|
|
|
|
super(DeviceListsStream, self).__init__(hs)
|
|
|
|
|
|
|
|
|
|
|
|
class ToDeviceStream(Stream):
|
|
|
|
"""New to_device messages for a client
|
|
|
|
"""
|
2019-06-20 11:32:02 +02:00
|
|
|
|
2020-03-23 14:59:11 +01:00
|
|
|
ToDeviceStreamRow = namedtuple("ToDeviceStreamRow", ("entity",)) # str
|
|
|
|
|
2017-03-27 15:58:26 +02:00
|
|
|
NAME = "to_device"
|
|
|
|
ROW_TYPE = ToDeviceStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = store.get_to_device_stream_token # type: ignore
|
|
|
|
self.update_function = store.get_all_new_device_messages # type: ignore
|
2017-03-27 15:58:26 +02:00
|
|
|
|
|
|
|
super(ToDeviceStream, self).__init__(hs)
|
|
|
|
|
|
|
|
|
|
|
|
class TagAccountDataStream(Stream):
|
|
|
|
"""Someone added/removed a tag for a room
|
|
|
|
"""
|
2019-06-20 11:32:02 +02:00
|
|
|
|
2020-03-23 14:59:11 +01:00
|
|
|
TagAccountDataStreamRow = namedtuple(
|
|
|
|
"TagAccountDataStreamRow", ("user_id", "room_id", "data") # str # str # dict
|
|
|
|
)
|
|
|
|
|
2017-03-27 15:58:26 +02:00
|
|
|
NAME = "tag_account_data"
|
|
|
|
ROW_TYPE = TagAccountDataStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = store.get_max_account_data_stream_id # type: ignore
|
|
|
|
self.update_function = store.get_all_updated_tags # type: ignore
|
2017-03-27 15:58:26 +02:00
|
|
|
|
|
|
|
super(TagAccountDataStream, self).__init__(hs)
|
|
|
|
|
|
|
|
|
|
|
|
class AccountDataStream(Stream):
|
|
|
|
"""Global or per room account data was changed
|
|
|
|
"""
|
2019-06-20 11:32:02 +02:00
|
|
|
|
2020-03-23 14:59:11 +01:00
|
|
|
AccountDataStreamRow = namedtuple(
|
|
|
|
"AccountDataStream", ("user_id", "room_id", "data_type") # str # str # str
|
|
|
|
)
|
|
|
|
|
2017-03-27 15:58:26 +02:00
|
|
|
NAME = "account_data"
|
|
|
|
ROW_TYPE = AccountDataStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
self.store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = self.store.get_max_account_data_stream_id # type: ignore
|
2017-03-27 15:58:26 +02:00
|
|
|
|
|
|
|
super(AccountDataStream, self).__init__(hs)
|
|
|
|
|
2020-01-16 10:16:12 +01:00
|
|
|
async def update_function(self, from_token, to_token, limit):
|
|
|
|
global_results, room_results = await self.store.get_all_updated_account_data(
|
2017-03-27 15:58:26 +02:00
|
|
|
from_token, from_token, to_token, limit
|
|
|
|
)
|
|
|
|
|
|
|
|
results = list(room_results)
|
|
|
|
results.extend(
|
2019-11-08 12:42:55 +01:00
|
|
|
(stream_id, user_id, None, account_data_type)
|
|
|
|
for stream_id, user_id, account_data_type in global_results
|
2017-03-27 15:58:26 +02:00
|
|
|
)
|
|
|
|
|
2019-07-23 15:00:55 +02:00
|
|
|
return results
|
2017-03-27 15:58:26 +02:00
|
|
|
|
|
|
|
|
2017-07-20 18:13:18 +02:00
|
|
|
class GroupServerStream(Stream):
|
2020-03-23 14:59:11 +01:00
|
|
|
GroupsStreamRow = namedtuple(
|
|
|
|
"GroupsStreamRow",
|
|
|
|
("group_id", "user_id", "type", "content"), # str # str # str # dict
|
|
|
|
)
|
|
|
|
|
2017-07-20 18:13:18 +02:00
|
|
|
NAME = "groups"
|
|
|
|
ROW_TYPE = GroupsStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = store.get_group_stream_token # type: ignore
|
|
|
|
self.update_function = store.get_all_groups_changes # type: ignore
|
2017-07-20 18:13:18 +02:00
|
|
|
|
|
|
|
super(GroupServerStream, self).__init__(hs)
|
2019-10-30 22:22:52 +01:00
|
|
|
|
|
|
|
|
|
|
|
class UserSignatureStream(Stream):
|
|
|
|
"""A user has signed their own device with their user-signing key
|
|
|
|
"""
|
|
|
|
|
2020-03-23 14:59:11 +01:00
|
|
|
UserSignatureStreamRow = namedtuple("UserSignatureStreamRow", ("user_id")) # str
|
|
|
|
|
2019-10-30 22:22:52 +01:00
|
|
|
NAME = "user_signature"
|
|
|
|
ROW_TYPE = UserSignatureStreamRow
|
|
|
|
|
|
|
|
def __init__(self, hs):
|
|
|
|
store = hs.get_datastore()
|
|
|
|
|
2020-01-14 15:08:06 +01:00
|
|
|
self.current_token = store.get_device_stream_token # type: ignore
|
|
|
|
self.update_function = store.get_all_user_signature_changes_for_remotes # type: ignore
|
2019-10-30 22:22:52 +01:00
|
|
|
|
|
|
|
super(UserSignatureStream, self).__init__(hs)
|