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https://github.com/matrix-org/dendrite
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Remove KindRewrite (#1481)
* Don't send rewrite events
* Remove final traces of rewrite events
* Remove test that is no longer needed
* Revert "Remove test that is no longer needed"
This reverts commit 9a45babff6
.
* Update test to use KindOutlier
This commit is contained in:
parent
8fb74fe99a
commit
bf90db5b60
5 changed files with 3 additions and 109 deletions
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@ -232,7 +232,7 @@ func (r *FederationSenderInternalAPI) performJoinUsingServer(
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// If we successfully performed a send_join above then the other
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// server now thinks we're a part of the room. Send the newly
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// returned state to the roomserver to update our local view.
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if err = roomserverAPI.SendEventWithRewrite(
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if err = roomserverAPI.SendEventWithState(
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ctx, r.rsAPI,
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respState,
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event.Headered(respMakeJoin.RoomVersion),
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@ -35,10 +35,6 @@ const (
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// KindBackfill event extend the contiguous graph going backwards.
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// They always have state.
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KindBackfill = 3
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// KindRewrite events are used when rewriting the head of the room
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// graph with entirely new state. The output events generated will
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// be state events rather than timeline events.
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KindRewrite = 4
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)
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// DoNotSendToOtherServers tells us not to send the event to other matrix
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@ -80,99 +80,6 @@ func SendEventWithState(
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return SendInputRoomEvents(ctx, rsAPI, ires)
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}
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// SendEventWithRewrite writes an event with KindNew to the roomserver along
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// with a number of rewrite and outlier events for state and auth events
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// respectively.
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func SendEventWithRewrite(
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ctx context.Context, rsAPI RoomserverInternalAPI, state *gomatrixserverlib.RespState,
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event gomatrixserverlib.HeaderedEvent, haveEventIDs map[string]bool,
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) error {
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isCurrentState := map[string]struct{}{}
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for _, se := range state.StateEvents {
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isCurrentState[se.EventID()] = struct{}{}
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}
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authAndStateEvents, err := state.Events()
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if err != nil {
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return err
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}
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var ires []InputRoomEvent
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var stateIDs []string
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// This function generates three things:
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// A - A set of "rewrite" events, which will form the newly rewritten
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// state before the event, which includes every rewrite event that
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// came before it in its state
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// B - A set of "outlier" events, which are auth events but not part
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// of the rewritten state
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// C - A "new" event, which include all of the rewrite events in its
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// state
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for _, authOrStateEvent := range authAndStateEvents {
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if authOrStateEvent.StateKey() == nil {
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continue
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}
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if haveEventIDs[authOrStateEvent.EventID()] {
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continue
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}
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if event.StateKey() == nil {
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continue
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}
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// We will handle an event as if it's an outlier if one of the
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// following conditions is true:
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storeAsOutlier := false
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if _, ok := isCurrentState[authOrStateEvent.EventID()]; !ok {
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// The event is an auth event and isn't a part of the state set.
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// We'll send it as an outlier because we need it to be stored
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// in case something is referring to it as an auth event.
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storeAsOutlier = true
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}
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if storeAsOutlier {
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ires = append(ires, InputRoomEvent{
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Kind: KindOutlier,
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Event: authOrStateEvent.Headered(event.RoomVersion),
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AuthEventIDs: authOrStateEvent.AuthEventIDs(),
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})
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continue
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}
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// If the event isn't an outlier then we'll instead send it as a
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// rewrite event, so that it'll form part of the rewritten state.
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// These events will go through the membership and latest event
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// updaters and we will generate output events, but they will be
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// flagged as non-current (i.e. didn't just happen) events.
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// Each of these rewrite events includes all of the rewrite events
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// that came before in their StateEventIDs.
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ires = append(ires, InputRoomEvent{
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Kind: KindRewrite,
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Event: authOrStateEvent.Headered(event.RoomVersion),
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AuthEventIDs: authOrStateEvent.AuthEventIDs(),
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HasState: true,
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StateEventIDs: stateIDs,
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})
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// Add the event ID into the StateEventIDs of all subsequent
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// rewrite events, and the new event.
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stateIDs = append(stateIDs, authOrStateEvent.EventID())
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}
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// Send the final event as a new event, which will generate
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// a timeline output event for it. All of the rewrite events
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// that came before will be sent as StateEventIDs, forming a
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// new clean state before the event.
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ires = append(ires, InputRoomEvent{
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Kind: KindNew,
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Event: event,
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AuthEventIDs: event.AuthEventIDs(),
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HasState: true,
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StateEventIDs: stateIDs,
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})
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return SendInputRoomEvents(ctx, rsAPI, ires)
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}
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// SendInputRoomEvents to the roomserver.
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func SendInputRoomEvents(
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ctx context.Context, rsAPI RoomserverInternalAPI, ires []InputRoomEvent,
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@ -136,15 +136,6 @@ func (r *Inputer) processRoomEvent(
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return event.EventID(), rejectionErr
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}
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if input.Kind == api.KindRewrite {
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logrus.WithFields(logrus.Fields{
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"event_id": event.EventID(),
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"type": event.Type(),
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"room": event.RoomID(),
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}).Debug("Stored rewrite")
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return event.EventID(), nil
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}
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if err = r.updateLatestEvents(
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ctx, // context
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roomInfo, // room info for the room being updated
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@ -238,7 +238,7 @@ func TestOutputRedactedEvent(t *testing.T) {
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}
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}
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// This tests that rewriting state via KindRewrite works correctly.
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// This tests that rewriting state works correctly.
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// This creates a small room with a create/join/name state, then replays it
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// with a new room name. We expect the output events to contain the original events,
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// followed by a single OutputNewRoomEvent with RewritesState set to true with the
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@ -344,7 +344,7 @@ func TestOutputRewritesState(t *testing.T) {
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for i := 0; i < len(rewriteEvents)-1; i++ {
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ev := rewriteEvents[i]
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inputEvents = append(inputEvents, api.InputRoomEvent{
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Kind: api.KindRewrite,
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Kind: api.KindOutlier,
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Event: ev,
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AuthEventIDs: ev.AuthEventIDs(),
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HasState: true,
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