2015-01-23 18:31:29 +00:00
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# -*- coding: utf-8 -*-
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2015-01-26 18:53:31 +00:00
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# Copyright 2015 OpenMarket Ltd
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2015-01-23 18:31:29 +00:00
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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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from twisted.internet import defer
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from synapse.http.servlet import RestServlet
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from synapse.handlers.sync import SyncConfig
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from synapse.types import StreamToken
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from synapse.events.utils import serialize_event
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from ._base import client_v2_pattern
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import logging
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logger = logging.getLogger(__name__)
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class SyncRestServlet(RestServlet):
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"""
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GET parameters::
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timeout(int): How long to wait for new events in milliseconds.
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limit(int): Maxiumum number of events per room to return.
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gap(bool): Create gaps the message history if limit is exceeded to
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ensure that the client has the most recent messages. Defaults to
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"true".
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sort(str,str): tuple of sort key (e.g. "timeline") and direction
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(e.g. "asc", "desc"). Defaults to "timeline,asc".
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since(batch_token): Batch token when asking for incremental deltas.
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set_presence(str): What state the device presence should be set to.
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default is "online".
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backfill(bool): Should the HS request message history from other
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servers. This may take a long time making it unsuitable for clients
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expecting a prompt response. Defaults to "true".
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filter(filter_id): A filter to apply to the events returned.
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filter_*: Filter override parameters.
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Response JSON::
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{
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"next_batch": // batch token for the next /sync
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"private_user_data": // private events for this user.
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"public_user_data": // public events for all users including the
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// public events for this user.
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"rooms": [{ // List of rooms with updates.
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"room_id": // Id of the room being updated
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"limited": // Was the per-room event limit exceeded?
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"published": // Is the room published by our HS?
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"event_map": // Map of EventID -> event JSON.
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"events": { // The recent events in the room if gap is "true"
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// otherwise the next events in the room.
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"batch": [] // list of EventIDs in the "event_map".
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"prev_batch": // back token for getting previous events.
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}
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"state": [] // list of EventIDs updating the current state to
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// be what it should be at the end of the batch.
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}]
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}
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"""
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PATTERN = client_v2_pattern("/sync$")
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ALLOWED_SORT = set(["timeline,asc", "timeline,desc"])
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ALLOWED_PRESENCE = set(["online", "offline", "idle"])
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def __init__(self, hs):
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super(SyncRestServlet, self).__init__()
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self.auth = hs.get_auth()
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self.sync_handler = hs.get_handlers().sync_handler
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self.clock = hs.get_clock()
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@defer.inlineCallbacks
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def on_GET(self, request):
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user, client = yield self.auth.get_user_by_req(request)
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timeout = self.parse_integer(request, "timeout", default=0)
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limit = self.parse_integer(request, "limit", required=True)
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gap = self.parse_boolean(request, "gap", default=True)
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sort = self.parse_string(
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request, "sort", default="timeline,asc",
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allowed_values=self.ALLOWED_SORT
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)
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since = self.parse_string(request, "since")
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set_presence = self.parse_string(
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request, "set_presence", default="online",
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allowed_values=self.ALLOWED_PRESENCE
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)
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backfill = self.parse_boolean(request, "backfill", default=False)
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filter_id = self.parse_string(request, "filter", default=None)
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logger.info(
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"/sync: user=%r, timeout=%r, limit=%r, gap=%r, sort=%r, since=%r,"
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" set_presence=%r, backfill=%r, filter_id=%r" % (
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user, timeout, limit, gap, sort, since, set_presence,
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backfill, filter_id
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)
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)
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# TODO(mjark): Load filter and apply overrides.
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# filter = self.filters.load_fitler(filter_id_str)
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# filter = filter.apply_overrides(http_request)
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# if filter.matches(event):
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# # stuff
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sync_config = SyncConfig(
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user=user,
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device="TODO", # TODO(mjark) Get the device_id from access_token
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gap=gap,
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limit=limit,
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sort=sort,
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backfill=backfill,
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filter="TODO", # TODO(mjark) Add the filter to the config.
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)
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if since is not None:
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since_token = StreamToken.from_string(since)
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else:
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since_token = None
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sync_result = yield self.sync_handler.wait_for_sync_for_user(
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sync_config, since_token=since_token, timeout=timeout
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)
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time_now = self.clock.time_msec()
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response_content = {
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"public_user_data": self.encode_events(
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sync_result.public_user_data, filter, time_now
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),
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"private_user_data": self.encode_events(
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sync_result.private_user_data, filter, time_now
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),
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"rooms": self.encode_rooms(sync_result.rooms, filter, time_now),
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"next_batch": sync_result.next_batch.to_string(),
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}
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defer.returnValue((200, response_content))
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def encode_events(self, events, filter, time_now):
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return [self.encode_event(event, filter, time_now) for event in events]
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@staticmethod
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def encode_event(event, filter, time_now):
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# TODO(mjark): Respect formatting requirements in the filter.
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return serialize_event(event, time_now)
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def encode_rooms(self, rooms, filter, time_now):
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return [self.encode_room(room, filter, time_now) for room in rooms]
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@staticmethod
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def encode_room(room, filter, time_now):
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event_map = {}
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state_event_ids = []
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recent_event_ids = []
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for event in room.state:
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# TODO(mjark): Respect formatting requirements in the filter.
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event_map[event.event_id] = serialize_event(
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event, time_now, strip_ids=True
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)
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state_event_ids.append(event.event_id)
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for event in room.events:
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# TODO(mjark): Respect formatting requirements in the filter.
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event_map[event.event_id] = serialize_event(
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event, time_now, strip_ids=True
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)
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recent_event_ids.append(event.event_id)
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return {
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"room_id": room.room_id,
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"event_map": event_map,
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"events": {
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"batch": recent_event_ids,
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"prev_batch": room.prev_batch.to_string(),
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},
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"state": state_event_ids,
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"limited": room.limited,
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"published": room.published,
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}
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def register_servlets(hs, http_server):
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SyncRestServlet(hs).register(http_server)
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