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Return joinedRoomIDs directly from getStateDeltas

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Signed-off-by: Alex Chen <minecnly@gmail.com>
This commit is contained in:
Cnly 2019-07-26 00:54:49 +08:00
parent 57ae0ad027
commit 85c8ed19aa
1 changed files with 10 additions and 14 deletions
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24
syncapi/storage/syncserver.go
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@ -254,19 +254,12 @@ func (d *SyncServerDatasource) addPDUDeltaToResponse(
// joined rooms, but also which rooms have membership transitions for this user between the 2 PDU stream positions.
// This works out what the 'state' key should be for each room as well as which membership block
// to put the room into.
deltas, err := d.getStateDeltas(ctx, &device, txn, fromPos, toPos, device.UserID)
deltas, joinedRoomIDs, err := d.getStateDeltas(ctx, &device, txn, fromPos, toPos, device.UserID)
if err != nil {
return nil, err
}
// len(deltas) should be a good enough initial capacity
joinedRoomIDs := make([]string, 0, len(deltas))
for _, delta := range deltas {
if delta.membership == membershipJoin {
joinedRoomIDs = append(joinedRoomIDs, delta.roomID)
}
err = d.addRoomDeltaToResponse(ctx, &device, txn, fromPos, toPos, delta, numRecentEventsPerRoom, res)
if err != nil {
return nil, err
@ -727,10 +720,13 @@ func (d *SyncServerDatasource) fetchMissingStateEvents(
return events, nil
}
// getStateDeltas returns the state deltas between fromPos and toPos for the
// rooms in which the user has new membership events.
// A list of joined room IDs is also returned in case the caller needs it.
func (d *SyncServerDatasource) getStateDeltas(
ctx context.Context, device *authtypes.Device, txn *sql.Tx,
fromPos, toPos int64, userID string,
) ([]stateDelta, error) {
) ([]stateDelta, []string, error) {
// Implement membership change algorithm: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L821
// - Get membership list changes for this user in this sync response
// - For each room which has membership list changes:
@ -744,11 +740,11 @@ func (d *SyncServerDatasource) getStateDeltas(
// get all the state events ever between these two positions
stateNeeded, eventMap, err := d.events.selectStateInRange(ctx, txn, fromPos, toPos)
if err != nil {
return nil, err
return nil, nil, err
}
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
if err != nil {
return nil, err
return nil, nil, err
}
for roomID, stateStreamEvents := range state {
@ -764,7 +760,7 @@ func (d *SyncServerDatasource) getStateDeltas(
var allState []gomatrixserverlib.Event
allState, err = d.roomstate.selectCurrentState(ctx, txn, roomID)
if err != nil {
return nil, err
return nil, nil, err
}
s := make([]streamEvent, len(allState))
for i := 0; i < len(s); i++ {
@ -788,7 +784,7 @@ func (d *SyncServerDatasource) getStateDeltas(
// Add in currently joined rooms
joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, membershipJoin)
if err != nil {
return nil, err
return nil, nil, err
}
for _, joinedRoomID := range joinedRoomIDs {
deltas = append(deltas, stateDelta{
@ -798,7 +794,7 @@ func (d *SyncServerDatasource) getStateDeltas(
})
}
return deltas, nil
return deltas, joinedRoomIDs, nil
}
// streamEventsToEvents converts streamEvent to Event. If device is non-nil and