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Fix 500s on /state, /state_ids when state not known (#2672)

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This was due to bad error bubbling.
This commit is contained in:
Neil Alexander 2022-08-25 09:51:36 +01:00 • committed by GitHub
parent 522bd2999f
commit 16156b0b09
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4 changed files with 23 additions and 7 deletions
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17
roomserver/internal/query/query.go
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@ -503,10 +503,11 @@ func (r *Queryer) QueryStateAndAuthChain(
}
var stateEvents []*gomatrixserverlib.Event
stateEvents, rejected, err := r.loadStateAtEventIDs(ctx, info, request.PrevEventIDs)
stateEvents, rejected, stateMissing, err := r.loadStateAtEventIDs(ctx, info, request.PrevEventIDs)
if err != nil {
return err
}
response.StateKnown = !stateMissing
response.IsRejected = rejected
response.PrevEventsExist = true
@ -542,15 +543,18 @@ func (r *Queryer) QueryStateAndAuthChain(
return err
}
func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo *types.RoomInfo, eventIDs []string) ([]*gomatrixserverlib.Event, bool, error) {
// first bool: is rejected, second bool: state missing
func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo *types.RoomInfo, eventIDs []string) ([]*gomatrixserverlib.Event, bool, bool, error) {
roomState := state.NewStateResolution(r.DB, roomInfo)
prevStates, err := r.DB.StateAtEventIDs(ctx, eventIDs)
if err != nil {
switch err.(type) {
case types.MissingEventError:
return nil, false, nil
return nil, false, true, nil
case types.MissingStateError:
return nil, false, true, nil
default:
return nil, false, err
return nil, false, false, err
}
}
// Currently only used on /state and /state_ids
@ -567,12 +571,11 @@ func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo *types.RoomI
ctx, prevStates,
)
if err != nil {
return nil, rejected, err
return nil, rejected, false, err
}
events, err := helpers.LoadStateEvents(ctx, r.DB, stateEntries)
return events, rejected, err
return events, rejected, false, err
}
type eventsFromIDs func(context.Context, []string) ([]types.Event, error)