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State handling tweaks (#2652)

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This tweaks how rejected events are handled in room state and also to not apply checks we can't complete to outliers.
This commit is contained in:
Neil Alexander 2022-08-18 17:06:13 +01:00 committed by GitHub
parent 606cb67506
commit 6b48ce0d75
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 92 additions and 53 deletions
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4
roomserver/internal/helpers/auth.go
View file

@ -39,7 +39,7 @@ func CheckForSoftFail(
var authStateEntries []types.StateEntry var authStateEntries []types.StateEntry
var err error var err error
if rewritesState { if rewritesState {
authStateEntries, err = db.StateEntriesForEventIDs(ctx, stateEventIDs) authStateEntries, err = db.StateEntriesForEventIDs(ctx, stateEventIDs, true)
if err != nil { if err != nil {
return true, fmt.Errorf("StateEntriesForEventIDs failed: %w", err) return true, fmt.Errorf("StateEntriesForEventIDs failed: %w", err)
} }
@ -97,7 +97,7 @@ func CheckAuthEvents(
authEventIDs []string, authEventIDs []string,
) ([]types.EventNID, error) { ) ([]types.EventNID, error) {
// Grab the numeric IDs for the supplied auth state events from the database. // Grab the numeric IDs for the supplied auth state events from the database.
authStateEntries, err := db.StateEntriesForEventIDs(ctx, authEventIDs) authStateEntries, err := db.StateEntriesForEventIDs(ctx, authEventIDs, true)
if err != nil { if err != nil {
return nil, fmt.Errorf("db.StateEntriesForEventIDs: %w", err) return nil, fmt.Errorf("db.StateEntriesForEventIDs: %w", err)
} }

6
roomserver/internal/input/input_events.go
View file

@ -301,7 +301,7 @@ func (r *Inputer) processRoomEvent(
// bother doing this if the event was already rejected as it just ends up // bother doing this if the event was already rejected as it just ends up
// burning CPU time. // burning CPU time.
historyVisibility := gomatrixserverlib.HistoryVisibilityShared // Default to shared. historyVisibility := gomatrixserverlib.HistoryVisibilityShared // Default to shared.
if rejectionErr == nil && !isRejected && !softfail { if input.Kind != api.KindOutlier && rejectionErr == nil && !isRejected && !softfail {
var err error var err error
historyVisibility, rejectionErr, err = r.processStateBefore(ctx, input, missingPrev) historyVisibility, rejectionErr, err = r.processStateBefore(ctx, input, missingPrev)
if err != nil { if err != nil {
@ -356,6 +356,8 @@ func (r *Inputer) processRoomEvent(
// We stop here if the event is rejected: We've stored it but won't update forward extremities or notify anyone about it. // We stop here if the event is rejected: We've stored it but won't update forward extremities or notify anyone about it.
if isRejected || softfail { if isRejected || softfail {
logger.WithError(rejectionErr).WithFields(logrus.Fields{ logger.WithError(rejectionErr).WithFields(logrus.Fields{
"room_id": event.RoomID(),
"event_id": event.EventID(),
"soft_fail": softfail, "soft_fail": softfail,
"missing_prev": missingPrev, "missing_prev": missingPrev,
}).Warn("Stored rejected event") }).Warn("Stored rejected event")
@ -661,7 +663,7 @@ func (r *Inputer) calculateAndSetState(
// We've been told what the state at the event is so we don't need to calculate it. // We've been told what the state at the event is so we don't need to calculate it.
// Check that those state events are in the database and store the state. // Check that those state events are in the database and store the state.
var entries []types.StateEntry var entries []types.StateEntry
if entries, err = r.DB.StateEntriesForEventIDs(ctx, input.StateEventIDs); err != nil { if entries, err = r.DB.StateEntriesForEventIDs(ctx, input.StateEventIDs, true); err != nil {
return fmt.Errorf("updater.StateEntriesForEventIDs: %w", err) return fmt.Errorf("updater.StateEntriesForEventIDs: %w", err)
} }
entries = types.DeduplicateStateEntries(entries) entries = types.DeduplicateStateEntries(entries)

4
roomserver/internal/perform/perform_backfill.go
View file

@ -140,11 +140,11 @@ func (r *Backfiller) backfillViaFederation(ctx context.Context, req *api.Perform
continue continue
} }
var entries []types.StateEntry var entries []types.StateEntry
if entries, err = r.DB.StateEntriesForEventIDs(ctx, stateIDs); err != nil { if entries, err = r.DB.StateEntriesForEventIDs(ctx, stateIDs, true); err != nil {
// attempt to fetch the missing events // attempt to fetch the missing events
r.fetchAndStoreMissingEvents(ctx, info.RoomVersion, requester, stateIDs) r.fetchAndStoreMissingEvents(ctx, info.RoomVersion, requester, stateIDs)
// try again // try again
entries, err = r.DB.StateEntriesForEventIDs(ctx, stateIDs) entries, err = r.DB.StateEntriesForEventIDs(ctx, stateIDs, true)
if err != nil { if err != nil {
logrus.WithError(err).WithField("event_id", ev.EventID()).Error("backfillViaFederation: failed to get state entries for event") logrus.WithError(err).WithField("event_id", ev.EventID()).Error("backfillViaFederation: failed to get state entries for event")
return err return err

2
roomserver/storage/interface.go
View file

@ -79,7 +79,7 @@ type Database interface {
// Look up the state entries for a list of string event IDs // Look up the state entries for a list of string event IDs
// Returns an error if the there is an error talking to the database // Returns an error if the there is an error talking to the database
// Returns a types.MissingEventError if the event IDs aren't in the database. // Returns a types.MissingEventError if the event IDs aren't in the database.
StateEntriesForEventIDs(ctx context.Context, eventIDs []string) ([]types.StateEntry, error) StateEntriesForEventIDs(ctx context.Context, eventIDs []string, excludeRejected bool) ([]types.StateEntry, error)
// Look up the string event state keys for a list of numeric event state keys // Look up the string event state keys for a list of numeric event state keys
// Returns an error if there was a problem talking to the database. // Returns an error if there was a problem talking to the database.
EventStateKeys(ctx context.Context, eventStateKeyNIDs []types.EventStateKeyNID) (map[types.EventStateKeyNID]string, error) EventStateKeys(ctx context.Context, eventStateKeyNIDs []types.EventStateKeyNID) (map[types.EventStateKeyNID]string, error)

64
roomserver/storage/postgres/events_table.go
View file

@ -88,6 +88,14 @@ const bulkSelectStateEventByIDSQL = "" +
" WHERE event_id = ANY($1)" + " WHERE event_id = ANY($1)" +
" ORDER BY event_type_nid, event_state_key_nid ASC" " ORDER BY event_type_nid, event_state_key_nid ASC"
// Bulk lookup of events by string ID that aren't excluded.
// Sort by the numeric IDs for event type and state key.
// This means we can use binary search to lookup entries by type and state key.
const bulkSelectStateEventByIDExcludingRejectedSQL = "" +
"SELECT event_type_nid, event_state_key_nid, event_nid FROM roomserver_events" +
" WHERE event_id = ANY($1) AND is_rejected = FALSE" +
" ORDER BY event_type_nid, event_state_key_nid ASC"
// Bulk look up of events by event NID, optionally filtering by the event type // Bulk look up of events by event NID, optionally filtering by the event type
// or event state key NIDs if provided. (The CARDINALITY check will return true // or event state key NIDs if provided. (The CARDINALITY check will return true
// if the provided arrays are empty, ergo no filtering). // if the provided arrays are empty, ergo no filtering).
@ -140,23 +148,24 @@ const selectEventRejectedSQL = "" +
"SELECT is_rejected FROM roomserver_events WHERE room_nid = $1 AND event_id = $2" "SELECT is_rejected FROM roomserver_events WHERE room_nid = $1 AND event_id = $2"
type eventStatements struct { type eventStatements struct {
insertEventStmt *sql.Stmt insertEventStmt *sql.Stmt
selectEventStmt *sql.Stmt selectEventStmt *sql.Stmt
bulkSelectStateEventByIDStmt *sql.Stmt bulkSelectStateEventByIDStmt *sql.Stmt
bulkSelectStateEventByNIDStmt *sql.Stmt bulkSelectStateEventByIDExcludingRejectedStmt *sql.Stmt
bulkSelectStateAtEventByIDStmt *sql.Stmt bulkSelectStateEventByNIDStmt *sql.Stmt
updateEventStateStmt *sql.Stmt bulkSelectStateAtEventByIDStmt *sql.Stmt
selectEventSentToOutputStmt *sql.Stmt updateEventStateStmt *sql.Stmt
updateEventSentToOutputStmt *sql.Stmt selectEventSentToOutputStmt *sql.Stmt
selectEventIDStmt *sql.Stmt updateEventSentToOutputStmt *sql.Stmt
bulkSelectStateAtEventAndReferenceStmt *sql.Stmt selectEventIDStmt *sql.Stmt
bulkSelectEventReferenceStmt *sql.Stmt bulkSelectStateAtEventAndReferenceStmt *sql.Stmt
bulkSelectEventIDStmt *sql.Stmt bulkSelectEventReferenceStmt *sql.Stmt
bulkSelectEventNIDStmt *sql.Stmt bulkSelectEventIDStmt *sql.Stmt
bulkSelectUnsentEventNIDStmt *sql.Stmt bulkSelectEventNIDStmt *sql.Stmt
selectMaxEventDepthStmt *sql.Stmt bulkSelectUnsentEventNIDStmt *sql.Stmt
selectRoomNIDsForEventNIDsStmt *sql.Stmt selectMaxEventDepthStmt *sql.Stmt
selectEventRejectedStmt *sql.Stmt selectRoomNIDsForEventNIDsStmt *sql.Stmt
selectEventRejectedStmt *sql.Stmt
} }
func CreateEventsTable(db *sql.DB) error { func CreateEventsTable(db *sql.DB) error {
@ -171,6 +180,7 @@ func PrepareEventsTable(db *sql.DB) (tables.Events, error) {
{&s.insertEventStmt, insertEventSQL}, {&s.insertEventStmt, insertEventSQL},
{&s.selectEventStmt, selectEventSQL}, {&s.selectEventStmt, selectEventSQL},
{&s.bulkSelectStateEventByIDStmt, bulkSelectStateEventByIDSQL}, {&s.bulkSelectStateEventByIDStmt, bulkSelectStateEventByIDSQL},
{&s.bulkSelectStateEventByIDExcludingRejectedStmt, bulkSelectStateEventByIDExcludingRejectedSQL},
{&s.bulkSelectStateEventByNIDStmt, bulkSelectStateEventByNIDSQL}, {&s.bulkSelectStateEventByNIDStmt, bulkSelectStateEventByNIDSQL},
{&s.bulkSelectStateAtEventByIDStmt, bulkSelectStateAtEventByIDSQL}, {&s.bulkSelectStateAtEventByIDStmt, bulkSelectStateAtEventByIDSQL},
{&s.updateEventStateStmt, updateEventStateSQL}, {&s.updateEventStateStmt, updateEventStateSQL},
@ -221,11 +231,18 @@ func (s *eventStatements) SelectEvent(
} }
// bulkSelectStateEventByID lookups a list of state events by event ID. // bulkSelectStateEventByID lookups a list of state events by event ID.
// If any of the requested events are missing from the database it returns a types.MissingEventError // If not excluding rejected events, and any of the requested events are missing from
// the database it returns a types.MissingEventError. If excluding rejected events,
// the events will be silently omitted without error.
func (s *eventStatements) BulkSelectStateEventByID( func (s *eventStatements) BulkSelectStateEventByID(
ctx context.Context, txn *sql.Tx, eventIDs []string, ctx context.Context, txn *sql.Tx, eventIDs []string, excludeRejected bool,
) ([]types.StateEntry, error) { ) ([]types.StateEntry, error) {
stmt := sqlutil.TxStmt(txn, s.bulkSelectStateEventByIDStmt) var stmt *sql.Stmt
if excludeRejected {
stmt = sqlutil.TxStmt(txn, s.bulkSelectStateEventByIDExcludingRejectedStmt)
} else {
stmt = sqlutil.TxStmt(txn, s.bulkSelectStateEventByIDStmt)
}
rows, err := stmt.QueryContext(ctx, pq.StringArray(eventIDs)) rows, err := stmt.QueryContext(ctx, pq.StringArray(eventIDs))
if err != nil { if err != nil {
return nil, err return nil, err
@ -235,10 +252,10 @@ func (s *eventStatements) BulkSelectStateEventByID(
// because of the unique constraint on event IDs. // because of the unique constraint on event IDs.
// So we can allocate an array of the correct size now. // So we can allocate an array of the correct size now.
// We might get fewer results than IDs so we adjust the length of the slice before returning it. // We might get fewer results than IDs so we adjust the length of the slice before returning it.
results := make([]types.StateEntry, len(eventIDs)) results := make([]types.StateEntry, 0, len(eventIDs))
i := 0 i := 0
for ; rows.Next(); i++ { for ; rows.Next(); i++ {
result := &results[i] var result types.StateEntry
if err = rows.Scan( if err = rows.Scan(
&result.EventTypeNID, &result.EventTypeNID,
&result.EventStateKeyNID, &result.EventStateKeyNID,
@ -246,11 +263,12 @@ func (s *eventStatements) BulkSelectStateEventByID(
); err != nil { ); err != nil {
return nil, err return nil, err
} }
results = append(results, result)
} }
if err = rows.Err(); err != nil { if err = rows.Err(); err != nil {
return nil, err return nil, err
} }
if i != len(eventIDs) { if !excludeRejected && i != len(eventIDs) {
// If there are fewer rows returned than IDs then we were asked to lookup event IDs we don't have. // If there are fewer rows returned than IDs then we were asked to lookup event IDs we don't have.
// We don't know which ones were missing because we don't return the string IDs in the query. // We don't know which ones were missing because we don't return the string IDs in the query.
// However it should be possible debug this by replaying queries or entries from the input kafka logs. // However it should be possible debug this by replaying queries or entries from the input kafka logs.

4
roomserver/storage/shared/storage.go
View file

@ -113,9 +113,9 @@ func (d *Database) eventStateKeyNIDs(
} }
func (d *Database) StateEntriesForEventIDs( func (d *Database) StateEntriesForEventIDs(
ctx context.Context, eventIDs []string, ctx context.Context, eventIDs []string, excludeRejected bool,
) ([]types.StateEntry, error) { ) ([]types.StateEntry, error) {
return d.EventsTable.BulkSelectStateEventByID(ctx, nil, eventIDs) return d.EventsTable.BulkSelectStateEventByID(ctx, nil, eventIDs, excludeRejected)
} }
func (d *Database) StateEntriesForTuples( func (d *Database) StateEntriesForTuples(

57
roomserver/storage/sqlite3/events_table.go
View file

@ -65,6 +65,14 @@ const bulkSelectStateEventByIDSQL = "" +
" WHERE event_id IN ($1)" + " WHERE event_id IN ($1)" +
" ORDER BY event_type_nid, event_state_key_nid ASC" " ORDER BY event_type_nid, event_state_key_nid ASC"
// Bulk lookup of events by string ID that aren't rejected.
// Sort by the numeric IDs for event type and state key.
// This means we can use binary search to lookup entries by type and state key.
const bulkSelectStateEventByIDExcludingRejectedSQL = "" +
"SELECT event_type_nid, event_state_key_nid, event_nid FROM roomserver_events" +
" WHERE event_id IN ($1) AND is_rejected = 0" +
" ORDER BY event_type_nid, event_state_key_nid ASC"
const bulkSelectStateEventByNIDSQL = "" + const bulkSelectStateEventByNIDSQL = "" +
"SELECT event_type_nid, event_state_key_nid, event_nid FROM roomserver_events" + "SELECT event_type_nid, event_state_key_nid, event_nid FROM roomserver_events" +
" WHERE event_nid IN ($1)" " WHERE event_nid IN ($1)"
@ -113,19 +121,20 @@ const selectEventRejectedSQL = "" +
"SELECT is_rejected FROM roomserver_events WHERE room_nid = $1 AND event_id = $2" "SELECT is_rejected FROM roomserver_events WHERE room_nid = $1 AND event_id = $2"
type eventStatements struct { type eventStatements struct {
db *sql.DB db *sql.DB
insertEventStmt *sql.Stmt insertEventStmt *sql.Stmt
selectEventStmt *sql.Stmt selectEventStmt *sql.Stmt
bulkSelectStateEventByIDStmt *sql.Stmt bulkSelectStateEventByIDStmt *sql.Stmt
bulkSelectStateAtEventByIDStmt *sql.Stmt bulkSelectStateEventByIDExcludingRejectedStmt *sql.Stmt
updateEventStateStmt *sql.Stmt bulkSelectStateAtEventByIDStmt *sql.Stmt
selectEventSentToOutputStmt *sql.Stmt updateEventStateStmt *sql.Stmt
updateEventSentToOutputStmt *sql.Stmt selectEventSentToOutputStmt *sql.Stmt
selectEventIDStmt *sql.Stmt updateEventSentToOutputStmt *sql.Stmt
bulkSelectStateAtEventAndReferenceStmt *sql.Stmt selectEventIDStmt *sql.Stmt
bulkSelectEventReferenceStmt *sql.Stmt bulkSelectStateAtEventAndReferenceStmt *sql.Stmt
bulkSelectEventIDStmt *sql.Stmt bulkSelectEventReferenceStmt *sql.Stmt
selectEventRejectedStmt *sql.Stmt bulkSelectEventIDStmt *sql.Stmt
selectEventRejectedStmt *sql.Stmt
//bulkSelectEventNIDStmt *sql.Stmt //bulkSelectEventNIDStmt *sql.Stmt
//bulkSelectUnsentEventNIDStmt *sql.Stmt //bulkSelectUnsentEventNIDStmt *sql.Stmt
//selectRoomNIDsForEventNIDsStmt *sql.Stmt //selectRoomNIDsForEventNIDsStmt *sql.Stmt
@ -145,6 +154,7 @@ func PrepareEventsTable(db *sql.DB) (tables.Events, error) {
{&s.insertEventStmt, insertEventSQL}, {&s.insertEventStmt, insertEventSQL},
{&s.selectEventStmt, selectEventSQL}, {&s.selectEventStmt, selectEventSQL},
{&s.bulkSelectStateEventByIDStmt, bulkSelectStateEventByIDSQL}, {&s.bulkSelectStateEventByIDStmt, bulkSelectStateEventByIDSQL},
{&s.bulkSelectStateEventByIDExcludingRejectedStmt, bulkSelectStateEventByIDExcludingRejectedSQL},
{&s.bulkSelectStateAtEventByIDStmt, bulkSelectStateAtEventByIDSQL}, {&s.bulkSelectStateAtEventByIDStmt, bulkSelectStateAtEventByIDSQL},
{&s.updateEventStateStmt, updateEventStateSQL}, {&s.updateEventStateStmt, updateEventStateSQL},
{&s.updateEventSentToOutputStmt, updateEventSentToOutputSQL}, {&s.updateEventSentToOutputStmt, updateEventSentToOutputSQL},
@ -194,16 +204,24 @@ func (s *eventStatements) SelectEvent(
} }
// bulkSelectStateEventByID lookups a list of state events by event ID. // bulkSelectStateEventByID lookups a list of state events by event ID.
// If any of the requested events are missing from the database it returns a types.MissingEventError // If not excluding rejected events, and any of the requested events are missing from
// the database it returns a types.MissingEventError. If excluding rejected events,
// the events will be silently omitted without error.
func (s *eventStatements) BulkSelectStateEventByID( func (s *eventStatements) BulkSelectStateEventByID(
ctx context.Context, txn *sql.Tx, eventIDs []string, ctx context.Context, txn *sql.Tx, eventIDs []string, excludeRejected bool,
) ([]types.StateEntry, error) { ) ([]types.StateEntry, error) {
/////////////// ///////////////
var sql string
if excludeRejected {
sql = bulkSelectStateEventByIDExcludingRejectedSQL
} else {
sql = bulkSelectStateEventByIDSQL
}
iEventIDs := make([]interface{}, len(eventIDs)) iEventIDs := make([]interface{}, len(eventIDs))
for k, v := range eventIDs { for k, v := range eventIDs {
iEventIDs[k] = v iEventIDs[k] = v
} }
selectOrig := strings.Replace(bulkSelectStateEventByIDSQL, "($1)", sqlutil.QueryVariadic(len(iEventIDs)), 1) selectOrig := strings.Replace(sql, "($1)", sqlutil.QueryVariadic(len(iEventIDs)), 1)
selectPrep, err := s.db.Prepare(selectOrig) selectPrep, err := s.db.Prepare(selectOrig)
if err != nil { if err != nil {
return nil, err return nil, err
@ -221,10 +239,10 @@ func (s *eventStatements) BulkSelectStateEventByID(
// because of the unique constraint on event IDs. // because of the unique constraint on event IDs.
// So we can allocate an array of the correct size now. // So we can allocate an array of the correct size now.
// We might get fewer results than IDs so we adjust the length of the slice before returning it. // We might get fewer results than IDs so we adjust the length of the slice before returning it.
results := make([]types.StateEntry, len(eventIDs)) results := make([]types.StateEntry, 0, len(eventIDs))
i := 0 i := 0
for ; rows.Next(); i++ { for ; rows.Next(); i++ {
result := &results[i] var result types.StateEntry
if err = rows.Scan( if err = rows.Scan(
&result.EventTypeNID, &result.EventTypeNID,
&result.EventStateKeyNID, &result.EventStateKeyNID,
@ -232,8 +250,9 @@ func (s *eventStatements) BulkSelectStateEventByID(
); err != nil { ); err != nil {
return nil, err return nil, err
} }
results = append(results, result)
} }
if i != len(eventIDs) { if !excludeRejected && i != len(eventIDs) {
// If there are fewer rows returned than IDs then we were asked to lookup event IDs we don't have. // If there are fewer rows returned than IDs then we were asked to lookup event IDs we don't have.
// We don't know which ones were missing because we don't return the string IDs in the query. // We don't know which ones were missing because we don't return the string IDs in the query.
// However it should be possible debug this by replaying queries or entries from the input kafka logs. // However it should be possible debug this by replaying queries or entries from the input kafka logs.

2
roomserver/storage/tables/events_table_test.go
View file

@ -102,7 +102,7 @@ func Test_EventsTable(t *testing.T) {
}) })
} }
stateEvents, err := tab.BulkSelectStateEventByID(ctx, nil, eventIDs) stateEvents, err := tab.BulkSelectStateEventByID(ctx, nil, eventIDs, false)
assert.NoError(t, err) assert.NoError(t, err)
assert.Equal(t, len(stateEvents), len(eventIDs)) assert.Equal(t, len(stateEvents), len(eventIDs))
nids := make([]types.EventNID, 0, len(stateEvents)) nids := make([]types.EventNID, 0, len(stateEvents))

2
roomserver/storage/tables/interface.go
View file

@ -46,7 +46,7 @@ type Events interface {
SelectEvent(ctx context.Context, txn *sql.Tx, eventID string) (types.EventNID, types.StateSnapshotNID, error) SelectEvent(ctx context.Context, txn *sql.Tx, eventID string) (types.EventNID, types.StateSnapshotNID, error)
// bulkSelectStateEventByID lookups a list of state events by event ID. // bulkSelectStateEventByID lookups a list of state events by event ID.
// If any of the requested events are missing from the database it returns a types.MissingEventError // If any of the requested events are missing from the database it returns a types.MissingEventError
BulkSelectStateEventByID(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]types.StateEntry, error) BulkSelectStateEventByID(ctx context.Context, txn *sql.Tx, eventIDs []string, excludeRejected bool) ([]types.StateEntry, error)
BulkSelectStateEventByNID(ctx context.Context, txn *sql.Tx, eventNIDs []types.EventNID, stateKeyTuples []types.StateKeyTuple) ([]types.StateEntry, error) BulkSelectStateEventByNID(ctx context.Context, txn *sql.Tx, eventNIDs []types.EventNID, stateKeyTuples []types.StateKeyTuple) ([]types.StateEntry, error)
// BulkSelectStateAtEventByID lookups the state at a list of events by event ID. // BulkSelectStateAtEventByID lookups the state at a list of events by event ID.
// If any of the requested events are missing from the database it returns a types.MissingEventError. // If any of the requested events are missing from the database it returns a types.MissingEventError.