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Fix fetching missing state (#2163)

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* Check that we have a populated state snapshot when determining if we closed the gap

* Do the same in the query API

* Use HasState more opportunistically

* Try to avoid falling down the hole of using a trustworthy but empty state snapshot for non-create events

* Refactor missing state and make sure that we really solve the problem for the new event

* Comments

* Review comments

* Tweak that check again

* Tidy up that create check further

* Fix build hopefully

* Update sendOutliers to use OrderAuthAndStateEvents

* Don't go out of bounds on missingEvents
This commit is contained in:
Neil Alexander 2022-02-10 10:05:14 +00:00 • committed by GitHub
parent 9130156b13
commit 2782ae3d56
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6 changed files with 227 additions and 126 deletions
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4
roomserver/types/types.go
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@ -83,6 +83,10 @@ type StateKeyTuple struct {
EventStateKeyNID EventStateKeyNID
}
func (a StateKeyTuple) IsCreate() bool {
return a.EventTypeNID == MRoomCreateNID && a.EventStateKeyNID == EmptyStateKeyNID
}
// LessThan returns true if this state key is less than the other state key.
// The ordering is arbitrary and is used to implement binary search and to efficiently deduplicate entries.
func (a StateKeyTuple) LessThan(b StateKeyTuple) bool {