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make /context lazyload & filter aware (#3567)

make /context lazyload & filter aware.
This commit is contained in:
Matthew Hodgson 2018-07-27 15:12:50 +01:00 committed by GitHub
parent b0b5566f36
commit e9b2d047f6
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5 changed files with 43 additions and 7 deletions

1
changelog.d/3567.feature Normal file
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@ -0,0 +1 @@
make the /context API filter & lazy-load aware as per MSC1227

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@ -15,6 +15,7 @@
# limitations under the License.
"""Contains functions for performing events on rooms."""
import itertools
import logging
import math
import string
@ -401,7 +402,7 @@ class RoomContextHandler(object):
self.store = hs.get_datastore()
@defer.inlineCallbacks
def get_event_context(self, user, room_id, event_id, limit):
def get_event_context(self, user, room_id, event_id, limit, event_filter):
"""Retrieves events, pagination tokens and state around a given event
in a room.
@ -411,6 +412,8 @@ class RoomContextHandler(object):
event_id (str)
limit (int): The maximum number of events to return in total
(excluding state).
event_filter (Filter|None): the filter to apply to the events returned
(excluding the target event_id)
Returns:
dict, or None if the event isn't found
@ -443,7 +446,7 @@ class RoomContextHandler(object):
)
results = yield self.store.get_events_around(
room_id, event_id, before_limit, after_limit
room_id, event_id, before_limit, after_limit, event_filter
)
results["events_before"] = yield filter_evts(results["events_before"])
@ -455,8 +458,23 @@ class RoomContextHandler(object):
else:
last_event_id = event_id
types = None
filtered_types = None
if event_filter and event_filter.lazy_load_members():
members = set(ev.sender for ev in itertools.chain(
results["events_before"],
(results["event"],),
results["events_after"],
))
filtered_types = [EventTypes.Member]
types = [(EventTypes.Member, member) for member in members]
# XXX: why do we return the state as of the last event rather than the
# first? Shouldn't we be consistent with /sync?
# https://github.com/matrix-org/matrix-doc/issues/687
state = yield self.store.get_state_for_events(
[last_event_id], None
[last_event_id], types, filtered_types=filtered_types,
)
results["state"] = list(state[last_event_id].values())

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@ -287,7 +287,7 @@ class SearchHandler(BaseHandler):
contexts = {}
for event in allowed_events:
res = yield self.store.get_events_around(
event.room_id, event.event_id, before_limit, after_limit
event.room_id, event.event_id, before_limit, after_limit,
)
logger.info(

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@ -531,11 +531,20 @@ class RoomEventContextServlet(ClientV1RestServlet):
limit = parse_integer(request, "limit", default=10)
# picking the API shape for symmetry with /messages
filter_bytes = parse_string(request, "filter")
if filter_bytes:
filter_json = urlparse.unquote(filter_bytes).decode("UTF-8")
event_filter = Filter(json.loads(filter_json))
else:
event_filter = None
results = yield self.room_context_handler.get_event_context(
requester.user,
room_id,
event_id,
limit,
event_filter,
)
if not results:

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@ -527,7 +527,9 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
)
@defer.inlineCallbacks
def get_events_around(self, room_id, event_id, before_limit, after_limit):
def get_events_around(
self, room_id, event_id, before_limit, after_limit, event_filter=None,
):
"""Retrieve events and pagination tokens around a given event in a
room.
@ -536,6 +538,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
event_id (str)
before_limit (int)
after_limit (int)
event_filter (Filter|None)
Returns:
dict
@ -543,7 +546,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
results = yield self.runInteraction(
"get_events_around", self._get_events_around_txn,
room_id, event_id, before_limit, after_limit
room_id, event_id, before_limit, after_limit, event_filter,
)
events_before = yield self._get_events(
@ -563,7 +566,9 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
"end": results["after"]["token"],
})
def _get_events_around_txn(self, txn, room_id, event_id, before_limit, after_limit):
def _get_events_around_txn(
self, txn, room_id, event_id, before_limit, after_limit, event_filter,
):
"""Retrieves event_ids and pagination tokens around a given event in a
room.
@ -572,6 +577,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
event_id (str)
before_limit (int)
after_limit (int)
event_filter (Filter|None)
Returns:
dict
@ -601,11 +607,13 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
rows, start_token = self._paginate_room_events_txn(
txn, room_id, before_token, direction='b', limit=before_limit,
event_filter=event_filter,
)
events_before = [r.event_id for r in rows]
rows, end_token = self._paginate_room_events_txn(
txn, room_id, after_token, direction='f', limit=after_limit,
event_filter=event_filter,
)
events_after = [r.event_id for r in rows]