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modules/client/rooms/join: Hard reset the room head after join completes.

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This commit is contained in:
Jason Volk 2019-06-07 23:01:46 -07:00
parent 947fd1f4b4
commit abfdb06ebf
1 changed files with 19 additions and 1 deletions
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20
modules/client/rooms/join.cc
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@ -306,6 +306,11 @@ try
at<"sender"_>(event) at<"sender"_>(event)
}; };
const m::room room
{
room_id, event_id
};
log::info log::info
{ {
join_log, "join bootstrap sending in %s for %s at %s to '%s'", join_log, "join bootstrap sending in %s for %s at %s to '%s'",
@ -356,12 +361,25 @@ try
bootstrap_backfill(host, room_id, event_id); bootstrap_backfill(host, room_id, event_id);
} }
// After we just received and processed all of this state with only a
// recent backfill our system doesn't know if state events which are
// unreferenced are simply referenced by events we just don't have. They
// will all be added to the room::head and each future event we transmit
// to the room will drain that list little by little. But the cost of all
// these references is too high. We take the easy route here and simply
// clear the head of every event except our own join event.
const size_t num_reset
{
m::room::head::reset(room)
};
log::info log::info
{ {
join_log, "join bootstrap joined to %s for %s at %s complete", join_log, "join bootstrap joined to %s for %s at %s reset:%zu complete",
string_view{room_id}, string_view{room_id},
string_view{user_id}, string_view{user_id},
string_view{event_id}, string_view{event_id},
num_reset,
}; };
} }
catch(const std::exception &e) catch(const std::exception &e)