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Eliminate more SQL no row errors in sync API (#2363)

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* Handle `sql.ErrNoRows` in main `/sync` codepaths

* Catch more
This commit is contained in:
Neil Alexander 2022-04-20 16:51:37 +01:00 committed by GitHub
parent bb987cd64b
commit 54e7ea41c6
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 4 deletions
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34
syncapi/storage/shared/syncserver.go
View File

@ -688,6 +688,9 @@ func (d *Database) GetStateDeltas(
// user has ever interacted with — joined to, kicked/banned from, left.
memberships, err := d.CurrentRoomState.SelectRoomIDsWithAnyMembership(ctx, txn, userID)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil, nil
}
return nil, nil, err
}
@ -705,17 +708,23 @@ func (d *Database) GetStateDeltas(
// get all the state events ever (i.e. for all available rooms) between these two positions
stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, r, stateFilter, allRoomIDs)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil, nil
}
return nil, nil, err
}
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil, nil
}
return nil, nil, err
}
// find out which rooms this user is peeking, if any.
// We do this before joins so any peeks get overwritten
peeks, err := d.Peeks.SelectPeeksInRange(ctx, txn, userID, device.ID, r)
if err != nil {
if err != nil && err != sql.ErrNoRows {
return nil, nil, err
}
@ -726,6 +735,9 @@ func (d *Database) GetStateDeltas(
var s []types.StreamEvent
s, err = d.currentStateStreamEventsForRoom(ctx, txn, peek.RoomID, stateFilter)
if err != nil {
if err == sql.ErrNoRows {
continue
}
return nil, nil, err
}
state[peek.RoomID] = s
@ -753,6 +765,9 @@ func (d *Database) GetStateDeltas(
var s []types.StreamEvent
s, err = d.currentStateStreamEventsForRoom(ctx, txn, roomID, stateFilter)
if err != nil {
if err == sql.ErrNoRows {
continue
}
return nil, nil, err
}
state[roomID] = s
@ -803,6 +818,9 @@ func (d *Database) GetStateDeltasForFullStateSync(
// user has ever interacted with — joined to, kicked/banned from, left.
memberships, err := d.CurrentRoomState.SelectRoomIDsWithAnyMembership(ctx, txn, userID)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil, nil
}
return nil, nil, err
}
@ -819,7 +837,7 @@ func (d *Database) GetStateDeltasForFullStateSync(
deltas := make(map[string]types.StateDelta)
peeks, err := d.Peeks.SelectPeeksInRange(ctx, txn, userID, device.ID, r)
if err != nil {
if err != nil && err != sql.ErrNoRows {
return nil, nil, err
}
@ -828,6 +846,9 @@ func (d *Database) GetStateDeltasForFullStateSync(
if !peek.Deleted {
s, stateErr := d.currentStateStreamEventsForRoom(ctx, txn, peek.RoomID, stateFilter)
if stateErr != nil {
if stateErr == sql.ErrNoRows {
continue
}
return nil, nil, stateErr
}
deltas[peek.RoomID] = types.StateDelta{
@ -841,10 +862,16 @@ func (d *Database) GetStateDeltasForFullStateSync(
// Get all the state events ever between these two positions
stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, r, stateFilter, allRoomIDs)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil, nil
}
return nil, nil, err
}
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil, nil
}
return nil, nil, err
}
@ -869,6 +896,9 @@ func (d *Database) GetStateDeltasForFullStateSync(
for _, joinedRoomID := range joinedRoomIDs {
s, stateErr := d.currentStateStreamEventsForRoom(ctx, txn, joinedRoomID, stateFilter)
if stateErr != nil {
if stateErr == sql.ErrNoRows {
continue
}
return nil, nil, stateErr
}
deltas[joinedRoomID] = types.StateDelta{

7
syncapi/streams/stream_pdu.go
View File

@ -341,12 +341,16 @@ func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
wantFullState bool,
device *userapi.Device,
) (jr *types.JoinResponse, err error) {
jr = types.NewJoinResponse()
// 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 {
if err == sql.ErrNoRows {
return jr, nil
}
return
}
@ -430,12 +434,11 @@ func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
false, limited, stateFilter.IncludeRedundantMembers,
device, recentEvents, stateEvents,
)
if err != nil {
if err != nil && err != sql.ErrNoRows {
return nil, err
}
}
jr = types.NewJoinResponse()
jr.Summary.JoinedMemberCount = &joinedCount
jr.Summary.InvitedMemberCount = &invitedCount
jr.Timeline.PrevBatch = prevBatch