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ensure we always include the members for a given timeline block

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This commit is contained in:
Matthew Hodgson 2018-03-13 22:03:42 +00:00
parent fdedcd1f4d
commit 14a9d2f73d
1 changed files with 32 additions and 4 deletions
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36
synapse/handlers/sync.py
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@ -468,6 +468,8 @@ class SyncHandler(object):
with Measure(self.clock, "compute_state_delta"):
types = None
member_state_ids = {}
if filter_members:
# We only request state for the members needed to display the
# timeline:
@ -492,6 +494,13 @@ class SyncHandler(object):
state_ids = yield self.store.get_state_ids_for_event(
batch.events[0].event_id, types=types
)
if filter_members:
member_state_ids = {
t: state_ids[t]
for t in state_ids if t[0] == EventTypes.member
}
else:
current_state_ids = yield self.get_state_at(
room_id, stream_position=now_token, types=types
@ -499,6 +508,12 @@ class SyncHandler(object):
state_ids = current_state_ids
if filter_members:
member_state_ids = {
t: state_ids[t]
for t in state_ids if t[0] == EventTypes.member
}
timeline_state = {
(event.type, event.state_key): event.event_id
for event in batch.events if event.is_state()
@ -507,6 +522,7 @@ class SyncHandler(object):
state_ids = _calculate_state(
timeline_contains=timeline_state,
timeline_start=state_ids,
timeline_start_members=member_state_ids,
previous={},
current=current_state_ids,
)
@ -523,6 +539,12 @@ class SyncHandler(object):
batch.events[0].event_id, types=types
)
if filter_members:
member_state_ids = {
t: state_at_timeline_start[t]
for t in state_ids if t[0] == EventTypes.member
}
timeline_state = {
(event.type, event.state_key): event.event_id
for event in batch.events if event.is_state()
@ -531,6 +553,7 @@ class SyncHandler(object):
state_ids = _calculate_state(
timeline_contains=timeline_state,
timeline_start=state_at_timeline_start,
timeline_start_members=member_state_ids,
previous=state_at_previous_sync,
current=current_state_ids,
)
@ -1440,12 +1463,16 @@ def _action_has_highlight(actions):
return False
def _calculate_state(timeline_contains, timeline_start, previous, current):
def _calculate_state(timeline_contains, timeline_start, timeline_start_members,
previous, current):
"""Works out what state to include in a sync response.
Args:
timeline_contains (dict): state in the timeline
timeline_start (dict): state at the start of the timeline
timeline_start_members (dict): state at the start of the timeline
for room members who participate in this chunk of timeline.
Should always be a subset of timeline_start.
previous (dict): state at the end of the previous sync (or empty dict
if this is an initial sync)
current (dict): state at the end of the timeline
@ -1464,11 +1491,12 @@ def _calculate_state(timeline_contains, timeline_start, previous, current):
}
c_ids = set(e for e in current.values())
tc_ids = set(e for e in timeline_contains.values())
p_ids = set(e for e in previous.values())
ts_ids = set(e for e in timeline_start.values())
tsm_ids = set(e for e in timeline_start_members.values())
p_ids = set(e for e in previous.values())
tc_ids = set(e for e in timeline_contains.values())
state_ids = ((c_ids | ts_ids) - p_ids) - tc_ids
state_ids = (((c_ids | ts_ids) - p_ids) - tc_ids) | tsm_ids
return {
event_id_to_key[e]: e for e in state_ids