diff --git a/synapse/api/streams/event.py b/synapse/api/streams/event.py
deleted file mode 100644
index fe44a488bc..0000000000
--- a/synapse/api/streams/event.py
+++ /dev/null
@@ -1,194 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2014 matrix.org
-#
-# 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.
-
-"""This module contains classes for streaming from the event stream: /events.
-"""
-from twisted.internet import defer
-
-from synapse.api.errors import EventStreamError
-from synapse.api.events import SynapseEvent
-from synapse.api.streams import PaginationStream, StreamData
-
-import logging
-
-logger = logging.getLogger(__name__)
-
-
-class EventsStreamData(StreamData):
- EVENT_TYPE = "EventsStream"
-
- def __init__(self, hs, room_id=None, feedback=False):
- super(EventsStreamData, self).__init__(hs)
- self.room_id = room_id
- self.with_feedback = feedback
-
- @defer.inlineCallbacks
- def get_rows(self, user_id, from_key, to_key, limit, direction):
- data, latest_ver = yield self.store.get_room_events(
- user_id=user_id,
- from_key=from_key,
- to_key=to_key,
- limit=limit,
- room_id=self.room_id,
- with_feedback=self.with_feedback
- )
- defer.returnValue((data, latest_ver))
-
- @defer.inlineCallbacks
- def max_token(self):
- val = yield self.store.get_room_events_max_id()
- defer.returnValue(val)
-
-
-class EventStream(PaginationStream):
-
- SEPARATOR = '_'
-
- def __init__(self, user_id, stream_data_list):
- super(EventStream, self).__init__()
- self.user_id = user_id
- self.stream_data = stream_data_list
-
- @defer.inlineCallbacks
- def fix_tokens(self, pagination_config):
- pagination_config.from_tok = yield self.fix_token(
- pagination_config.from_tok)
- pagination_config.to_tok = yield self.fix_token(
- pagination_config.to_tok)
-
- if (
- not pagination_config.to_tok
- and pagination_config.direction == 'f'
- ):
- pagination_config.to_tok = yield self.get_current_max_token()
-
- logger.debug("pagination_config: %s", pagination_config)
-
- defer.returnValue(pagination_config)
-
- @defer.inlineCallbacks
- def fix_token(self, token):
- """Fixes unknown values in a token to known values.
-
- Args:
- token (str): The token to fix up.
- Returns:
- The fixed-up token, which may == token.
- """
- if token == PaginationStream.TOK_END:
- new_token = yield self.get_current_max_token()
-
- logger.debug("fix_token: From %s to %s", token, new_token)
-
- token = new_token
-
- defer.returnValue(token)
-
- @defer.inlineCallbacks
- def get_current_max_token(self):
- new_token_parts = []
- for s in self.stream_data:
- mx = yield s.max_token()
- new_token_parts.append(str(mx))
-
- new_token = EventStream.SEPARATOR.join(new_token_parts)
-
- logger.debug("get_current_max_token: %s", new_token)
-
- defer.returnValue(new_token)
-
- @defer.inlineCallbacks
- def get_chunk(self, config):
- # no support for limit on >1 streams, makes no sense.
- if config.limit and len(self.stream_data) > 1:
- raise EventStreamError(
- 400, "Limit not supported on multiplexed streams."
- )
-
- chunk_data, next_tok = yield self._get_chunk_data(
- config.from_tok,
- config.to_tok,
- config.limit,
- config.direction,
- )
-
- defer.returnValue({
- "chunk": chunk_data,
- "start": config.from_tok,
- "end": next_tok
- })
-
- @defer.inlineCallbacks
- def _get_chunk_data(self, from_tok, to_tok, limit, direction):
- """ Get event data between the two tokens.
-
- Tokens are SEPARATOR separated values representing pkey values of
- certain tables, and the position determines the StreamData invoked
- according to the STREAM_DATA list.
-
- The magic value '-1' can be used to get the latest value.
-
- Args:
- from_tok - The token to start from.
- to_tok - The token to end at. Must have values > from_tok or be -1.
- Returns:
- A list of event data.
- Raises:
- EventStreamError if something went wrong.
- """
- # sanity check
- if to_tok is not None:
- if (from_tok.count(EventStream.SEPARATOR) !=
- to_tok.count(EventStream.SEPARATOR) or
- (from_tok.count(EventStream.SEPARATOR) + 1) !=
- len(self.stream_data)):
- raise EventStreamError(400, "Token lengths don't match.")
-
- chunk = []
- next_ver = []
- for i, (from_pkey, to_pkey) in enumerate(zip(
- self._split_token(from_tok),
- self._split_token(to_tok)
- )):
- if from_pkey == to_pkey:
- # tokens are the same, we have nothing to do.
- next_ver.append(str(to_pkey))
- continue
-
- (event_chunk, max_pkey) = yield self.stream_data[i].get_rows(
- self.user_id, from_pkey, to_pkey, limit, direction,
- )
-
- chunk.extend([
- e.get_dict() if isinstance(e, SynapseEvent) else e
- for e in event_chunk
- ])
- next_ver.append(str(max_pkey))
-
- defer.returnValue((chunk, EventStream.SEPARATOR.join(next_ver)))
-
- def _split_token(self, token):
- """Splits the given token into a list of pkeys.
-
- Args:
- token (str): The token with SEPARATOR values.
- Returns:
- A list of ints.
- """
- if token:
- segments = token.split(EventStream.SEPARATOR)
- else:
- segments = [None] * len(self.stream_data)
- return segments
|
