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Don't re-request state events that are already in the timeline (#1739)

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* Don't request state events if we already have the timeline events (Postgres only)

* Rename variable

* nocyclo

* Add SQLite

* Tweaks

* Revert query change

* Don't dedupe if asking for full state

* Update query
This commit is contained in:
Neil Alexander 2021-02-04 12:20:37 +00:00 • committed by GitHub
parent 6099379ea4
commit 6e44450cc9
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 45 additions and 23 deletions
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33
syncapi/streams/stream_pdu.go
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@ -98,7 +98,7 @@ func (p *PDUStreamProvider) CompleteSync(
var jr *types.JoinResponse
jr, err = p.getJoinResponseForCompleteSync(
ctx, roomID, r, &stateFilter, &eventFilter, req.Device,
ctx, roomID, r, &stateFilter, &eventFilter, req.WantFullState, req.Device,
)
if err != nil {
req.Log.WithError(err).Error("p.getJoinResponseForCompleteSync failed")
@ -124,7 +124,7 @@ func (p *PDUStreamProvider) CompleteSync(
if !peek.Deleted {
var jr *types.JoinResponse
jr, err = p.getJoinResponseForCompleteSync(
ctx, peek.RoomID, r, &stateFilter, &eventFilter, req.Device,
ctx, peek.RoomID, r, &stateFilter, &eventFilter, req.WantFullState, req.Device,
)
if err != nil {
req.Log.WithError(err).Error("p.getJoinResponseForCompleteSync failed")
@ -254,26 +254,37 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
return nil
}
// nolint:gocyclo
func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
ctx context.Context,
roomID string,
r types.Range,
stateFilter *gomatrixserverlib.StateFilter,
eventFilter *gomatrixserverlib.RoomEventFilter,
wantFullState bool,
device *userapi.Device,
) (jr *types.JoinResponse, err error) {
var stateEvents []*gomatrixserverlib.HeaderedEvent
stateEvents, err = p.DB.CurrentState(ctx, roomID, stateFilter)
// TODO: When filters are added, we may need to call this multiple times to get enough events.
// See: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L316
recentStreamEvents, limited, err := p.DB.RecentEvents(
ctx, roomID, r, eventFilter, true, true,
)
if err != nil {
return
}
// TODO: When filters are added, we may need to call this multiple times to get enough events.
// See: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L316
var recentStreamEvents []types.StreamEvent
var limited bool
recentStreamEvents, limited, err = p.DB.RecentEvents(
ctx, roomID, r, eventFilter, true, true,
)
// Get the event IDs of the stream events we fetched. There's no point in us
var excludingEventIDs []string
if !wantFullState {
excludingEventIDs = make([]string, 0, len(recentStreamEvents))
for _, event := range recentStreamEvents {
if event.StateKey() != nil {
excludingEventIDs = append(excludingEventIDs, event.EventID())
}
}
}
stateEvents, err := p.DB.CurrentState(ctx, roomID, stateFilter, excludingEventIDs)
if err != nil {
return
}