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Ignore depth in federation API (#1451)

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Neil Alexander 2020-09-29 14:07:59 +01:00 • committed by GitHub
parent b0d5d1cc9f
commit 43cdba9a69
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2 changed files with 6 additions and 13 deletions
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9
federationapi/routing/send.go
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@ -656,7 +656,7 @@ retryAllowedState:
// getMissingEvents returns a nil backwardsExtremity if missing events were fetched and handled, else returns the new backwards extremity which we should
// begin from. Returns an error only if we should terminate the transaction which initiated /get_missing_events
// This function recursively calls txnReq.processEvent with the missing events, which will be processed before this function returns.
// This means that we may recursively call this function, as we spider back up prev_events to the min depth.
// This means that we may recursively call this function, as we spider back up prev_events.
// nolint:gocyclo
func (t *txnReq) getMissingEvents(ctx context.Context, e gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion, isInboundTxn bool) (backwardsExtremity *gomatrixserverlib.Event, err error) {
if !isInboundTxn {
@ -679,11 +679,6 @@ func (t *txnReq) getMissingEvents(ctx context.Context, e gomatrixserverlib.Event
for i := range res.LatestEvents {
latestEvents[i] = res.LatestEvents[i].EventID
}
// this server just sent us an event for which we do not know its prev_events - ask that server for those prev_events.
minDepth := int(res.Depth) - 20
if minDepth < 0 {
minDepth = 0
}
servers := []gomatrixserverlib.ServerName{t.Origin}
serverReq := &api.QueryServerJoinedToRoomRequest{
@ -700,8 +695,6 @@ func (t *txnReq) getMissingEvents(ctx context.Context, e gomatrixserverlib.Event
var m gomatrixserverlib.RespMissingEvents
if m, err = t.federation.LookupMissingEvents(ctx, server, e.RoomID(), gomatrixserverlib.MissingEvents{
Limit: 20,
// synapse uses the min depth they've ever seen in that room
MinDepth: minDepth,
// The latest event IDs that the sender already has. These are skipped when retrieving the previous events of latest_events.
EarliestEvents: latestEvents,
// The event IDs to retrieve the previous events for.