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modules/client/sync: Fix conditions to duplicate state in timeline; improve inconsistencies.

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This commit is contained in:
Jason Volk 2020-12-26 11:46:26 -08:00
parent a5d3cfbfa6
commit eefd59d845
2 changed files with 24 additions and 20 deletions
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35
modules/client/sync/rooms/state.cc
View file

@ -125,23 +125,28 @@ ircd::m::sync::room_state_linear_events(data &data)
room::events::viewport_size
};
// Figure out whether the event was included in the timeline or whether
// to include it here in the state, which comes before the timeline.
// Since linear-sync is already distinct from polylog-sync, the
// overwhelming majority of state events coming through linear-sync will
// use the timeline. We make an exception for past state events the server
// only recently obtained, to hide them from the timeline.
if(viewport_size >= 0 && data.membership != "invite" && !is_own_join)
const auto sounding
{
if(json::get<"depth"_>(*data.event) + viewport_size >= data.room_depth)
return false;
data.room_depth - json::get<"depth"_>(*data.event)
};
// We also query whether this state cell has been overwritten.
// Unlike the timeline, the state field will not be processed
// sequentially by our client so we can skip outdated events.
if(m::room::state::next(data.event_idx))
return false;
}
// Figure out whether the event was included in the timeline
const bool viewport_visible
{
viewport_size <= 0
|| data.membership == "invite"
|| sounding < viewport_size
};
// Query whether this state cell has been overwritten. Unlike the timeline,
// the state field will not be processed sequentially by our client.
const bool stale
{
m::room::state::next(data.event_idx) != 0
};
if(!viewport_visible && stale)
return false;
json::stack::object rooms
{

9
modules/client/sync/rooms/timeline.cc
View file

@ -103,11 +103,10 @@ ircd::m::sync::room_timeline_linear(data &data)
};
assert(sounding >= 0);
const bool is_stale
const bool viewport_visible
{
sounding
&& viewport_size >= 0
&& sounding > viewport_size
viewport_size <= 0
|| sounding < viewport_size
};
const bool is_own_membership
@ -154,7 +153,7 @@ ircd::m::sync::room_timeline_linear(data &data)
const bool skip
{
false
|| is_stale
|| !viewport_visible
|| (is_own_join && data.reflow_full_state)
};