128 lines
4.3 KiB
Go
128 lines
4.3 KiB
Go
package shared
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import (
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"context"
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"database/sql"
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"fmt"
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"github.com/matrix-org/dendrite/roomserver/types"
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"github.com/matrix-org/gomatrixserverlib"
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)
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type LatestEventsUpdater struct {
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transaction
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d *Database
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roomInfo types.RoomInfo
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latestEvents []types.StateAtEventAndReference
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lastEventIDSent string
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currentStateSnapshotNID types.StateSnapshotNID
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}
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func rollback(txn *sql.Tx) {
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if txn == nil {
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return
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}
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txn.Rollback() // nolint: errcheck
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}
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func NewLatestEventsUpdater(ctx context.Context, d *Database, txn *sql.Tx, roomInfo types.RoomInfo) (*LatestEventsUpdater, error) {
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eventNIDs, lastEventNIDSent, currentStateSnapshotNID, err :=
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d.RoomsTable.SelectLatestEventsNIDsForUpdate(ctx, txn, roomInfo.RoomNID)
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if err != nil {
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rollback(txn)
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return nil, err
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}
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stateAndRefs, err := d.EventsTable.BulkSelectStateAtEventAndReference(ctx, txn, eventNIDs)
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if err != nil {
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rollback(txn)
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return nil, err
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}
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var lastEventIDSent string
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if lastEventNIDSent != 0 {
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lastEventIDSent, err = d.EventsTable.SelectEventID(ctx, txn, lastEventNIDSent)
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if err != nil {
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rollback(txn)
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return nil, err
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}
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}
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return &LatestEventsUpdater{
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transaction{ctx, txn}, d, roomInfo, stateAndRefs, lastEventIDSent, currentStateSnapshotNID,
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}, nil
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}
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// RoomVersion implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) RoomVersion() (version gomatrixserverlib.RoomVersion) {
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return u.roomInfo.RoomVersion
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}
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// LatestEvents implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) LatestEvents() []types.StateAtEventAndReference {
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return u.latestEvents
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}
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// LastEventIDSent implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) LastEventIDSent() string {
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return u.lastEventIDSent
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}
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// CurrentStateSnapshotNID implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) CurrentStateSnapshotNID() types.StateSnapshotNID {
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return u.currentStateSnapshotNID
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}
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// StorePreviousEvents implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) StorePreviousEvents(eventNID types.EventNID, previousEventReferences []gomatrixserverlib.EventReference) error {
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return u.d.Writer.Do(u.d.DB, u.txn, func(txn *sql.Tx) error {
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for _, ref := range previousEventReferences {
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if err := u.d.PrevEventsTable.InsertPreviousEvent(u.ctx, txn, ref.EventID, ref.EventSHA256, eventNID); err != nil {
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return fmt.Errorf("u.d.PrevEventsTable.InsertPreviousEvent: %w", err)
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}
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}
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return nil
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})
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}
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// IsReferenced implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) IsReferenced(eventReference gomatrixserverlib.EventReference) (bool, error) {
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err := u.d.PrevEventsTable.SelectPreviousEventExists(u.ctx, u.txn, eventReference.EventID, eventReference.EventSHA256)
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if err == nil {
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return true, nil
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}
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if err == sql.ErrNoRows {
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return false, nil
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}
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return false, fmt.Errorf("u.d.PrevEventsTable.SelectPreviousEventExists: %w", err)
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}
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// SetLatestEvents implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) SetLatestEvents(
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roomNID types.RoomNID, latest []types.StateAtEventAndReference, lastEventNIDSent types.EventNID,
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currentStateSnapshotNID types.StateSnapshotNID,
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) error {
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eventNIDs := make([]types.EventNID, len(latest))
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for i := range latest {
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eventNIDs[i] = latest[i].EventNID
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}
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return u.d.Writer.Do(u.d.DB, u.txn, func(txn *sql.Tx) error {
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if err := u.d.RoomsTable.UpdateLatestEventNIDs(u.ctx, txn, roomNID, eventNIDs, lastEventNIDSent, currentStateSnapshotNID); err != nil {
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return fmt.Errorf("u.d.RoomsTable.updateLatestEventNIDs: %w", err)
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}
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return nil
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})
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}
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// HasEventBeenSent implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) HasEventBeenSent(eventNID types.EventNID) (bool, error) {
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return u.d.EventsTable.SelectEventSentToOutput(u.ctx, u.txn, eventNID)
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}
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// MarkEventAsSent implements types.RoomRecentEventsUpdater
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func (u *LatestEventsUpdater) MarkEventAsSent(eventNID types.EventNID) error {
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return u.d.Writer.Do(u.d.DB, u.txn, func(txn *sql.Tx) error {
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return u.d.EventsTable.UpdateEventSentToOutput(u.ctx, txn, eventNID)
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})
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}
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func (u *LatestEventsUpdater) MembershipUpdater(targetUserNID types.EventStateKeyNID, targetLocal bool) (*MembershipUpdater, error) {
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return u.d.membershipUpdaterTxn(u.ctx, u.txn, u.roomInfo.RoomNID, targetUserNID, targetLocal)
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}
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