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Add RoomInfo metadata struct (#1367)

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* Add RoomInfo struct

* Remove RoomNID and replace with RoomInfo

* Bugfix and remove another needless query

* nil guard
This commit is contained in:
Kegsay 2020-09-01 12:40:49 +01:00 • committed by GitHub
parent 0ab5bccd11
commit 6d79f04354
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 106 additions and 85 deletions
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10
roomserver/storage/interface.go
View file

@ -26,6 +26,8 @@ import (
type Database interface {
// Do we support processing input events for more than one room at a time?
SupportsConcurrentRoomInputs() bool
// RoomInfo returns room information for the given room ID, or nil if there is no room.
RoomInfo(ctx context.Context, roomID string) (*types.RoomInfo, error)
// Store the room state at an event in the database
AddState(
ctx context.Context,
@ -94,14 +96,6 @@ type Database interface {
// This is used to determine if the room event is processed/processing already.
// Returns an empty string if no such event exists.
GetTransactionEventID(ctx context.Context, transactionID string, sessionID int64, userID string) (string, error)
// Look up the numeric ID for the room.
// Returns 0 if the room doesn't exists.
// Returns an error if there was a problem talking to the database.
RoomNID(ctx context.Context, roomID string) (types.RoomNID, error)
// RoomNIDExcludingStubs is a special variation of RoomNID that will return 0 as if the room
// does not exist if the room has no latest events. This can happen when we've received an
// invite over federation for a room that we don't know anything else about yet.
RoomNIDExcludingStubs(ctx context.Context, roomID string) (types.RoomNID, error)
// Look up event references for the latest events in the room and the current state snapshot.
// Returns the latest events, the current state and the maximum depth of the latest events plus 1.
// Returns an error if there was a problem talking to the database.

18
roomserver/storage/postgres/rooms_table.go
View file

@ -74,6 +74,9 @@ const selectRoomVersionForRoomIDSQL = "" +
const selectRoomVersionForRoomNIDSQL = "" +
"SELECT room_version FROM roomserver_rooms WHERE room_nid = $1"
const selectRoomInfoSQL = "" +
"SELECT room_version, room_nid, state_snapshot_nid, latest_event_nids FROM roomserver_rooms WHERE room_id = $1"
type roomStatements struct {
insertRoomNIDStmt *sql.Stmt
selectRoomNIDStmt *sql.Stmt
@ -82,6 +85,7 @@ type roomStatements struct {
updateLatestEventNIDsStmt *sql.Stmt
selectRoomVersionForRoomIDStmt *sql.Stmt
selectRoomVersionForRoomNIDStmt *sql.Stmt
selectRoomInfoStmt *sql.Stmt
}
func NewPostgresRoomsTable(db *sql.DB) (tables.Rooms, error) {
@ -98,6 +102,7 @@ func NewPostgresRoomsTable(db *sql.DB) (tables.Rooms, error) {
{&s.updateLatestEventNIDsStmt, updateLatestEventNIDsSQL},
{&s.selectRoomVersionForRoomIDStmt, selectRoomVersionForRoomIDSQL},
{&s.selectRoomVersionForRoomNIDStmt, selectRoomVersionForRoomNIDSQL},
{&s.selectRoomInfoStmt, selectRoomInfoSQL},
}.Prepare(db)
}
@ -111,6 +116,19 @@ func (s *roomStatements) InsertRoomNID(
return types.RoomNID(roomNID), err
}
func (s *roomStatements) SelectRoomInfo(ctx context.Context, roomID string) (*types.RoomInfo, error) {
var info types.RoomInfo
var latestNIDs pq.Int64Array
err := s.selectRoomInfoStmt.QueryRowContext(ctx, roomID).Scan(
&info.RoomVersion, &info.RoomNID, &info.StateSnapshotNID, &latestNIDs,
)
if err == sql.ErrNoRows {
return nil, nil
}
info.IsStub = len(latestNIDs) == 0
return &info, err
}
func (s *roomStatements) SelectRoomNID(
ctx context.Context, txn *sql.Tx, roomID string,
) (types.RoomNID, error) {

32
roomserver/storage/shared/storage.go
View file

@ -120,6 +120,10 @@ func (d *Database) StateEntriesForTuples(
)
}
func (d *Database) RoomInfo(ctx context.Context, roomID string) (*types.RoomInfo, error) {
return d.RoomsTable.SelectRoomInfo(ctx, roomID)
}
func (d *Database) AddState(
ctx context.Context,
roomNID types.RoomNID,
@ -194,34 +198,6 @@ func (d *Database) EventsFromIDs(ctx context.Context, eventIDs []string) ([]type
return d.Events(ctx, nids)
}
func (d *Database) RoomNID(ctx context.Context, roomID string) (types.RoomNID, error) {
if nid, ok := d.Cache.GetRoomServerRoomNID(roomID); ok {
return nid, nil
}
roomNID, err := d.RoomsTable.SelectRoomNID(ctx, nil, roomID)
if err == sql.ErrNoRows {
return 0, nil
}
d.Cache.StoreRoomServerRoomNID(roomID, roomNID)
return roomNID, err
}
func (d *Database) RoomNIDExcludingStubs(ctx context.Context, roomID string) (roomNID types.RoomNID, err error) {
roomNID, err = d.RoomNID(ctx, roomID)
if err != nil {
return
}
latestEvents, _, err := d.RoomsTable.SelectLatestEventNIDs(ctx, nil, roomNID)
if err != nil {
return
}
if len(latestEvents) == 0 {
roomNID = 0
return
}
return
}
func (d *Database) LatestEventIDs(
ctx context.Context, roomNID types.RoomNID,
) (references []gomatrixserverlib.EventReference, currentStateSnapshotNID types.StateSnapshotNID, depth int64, err error) {

25
roomserver/storage/sqlite3/rooms_table.go
View file

@ -64,6 +64,9 @@ const selectRoomVersionForRoomIDSQL = "" +
const selectRoomVersionForRoomNIDSQL = "" +
"SELECT room_version FROM roomserver_rooms WHERE room_nid = $1"
const selectRoomInfoSQL = "" +
"SELECT room_version, room_nid, state_snapshot_nid, latest_event_nids FROM roomserver_rooms WHERE room_id = $1"
type roomStatements struct {
db *sql.DB
insertRoomNIDStmt *sql.Stmt
@ -73,6 +76,7 @@ type roomStatements struct {
updateLatestEventNIDsStmt *sql.Stmt
selectRoomVersionForRoomIDStmt *sql.Stmt
selectRoomVersionForRoomNIDStmt *sql.Stmt
selectRoomInfoStmt *sql.Stmt
}
func NewSqliteRoomsTable(db *sql.DB) (tables.Rooms, error) {
@ -91,9 +95,30 @@ func NewSqliteRoomsTable(db *sql.DB) (tables.Rooms, error) {
{&s.updateLatestEventNIDsStmt, updateLatestEventNIDsSQL},
{&s.selectRoomVersionForRoomIDStmt, selectRoomVersionForRoomIDSQL},
{&s.selectRoomVersionForRoomNIDStmt, selectRoomVersionForRoomNIDSQL},
{&s.selectRoomInfoStmt, selectRoomInfoSQL},
}.Prepare(db)
}
func (s *roomStatements) SelectRoomInfo(ctx context.Context, roomID string) (*types.RoomInfo, error) {
var info types.RoomInfo
var latestNIDsJSON string
err := s.selectRoomInfoStmt.QueryRowContext(ctx, roomID).Scan(
&info.RoomVersion, &info.RoomNID, &info.StateSnapshotNID, &latestNIDsJSON,
)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil
}
return nil, err
}
var latestNIDs []int64
if err = json.Unmarshal([]byte(latestNIDsJSON), &latestNIDs); err != nil {
return nil, err
}
info.IsStub = len(latestNIDs) == 0
return &info, err
}
func (s *roomStatements) InsertRoomNID(
ctx context.Context, txn *sql.Tx,
roomID string, roomVersion gomatrixserverlib.RoomVersion,

1
roomserver/storage/tables/interface.go
View file

@ -65,6 +65,7 @@ type Rooms interface {
UpdateLatestEventNIDs(ctx context.Context, txn *sql.Tx, roomNID types.RoomNID, eventNIDs []types.EventNID, lastEventSentNID types.EventNID, stateSnapshotNID types.StateSnapshotNID) error
SelectRoomVersionForRoomID(ctx context.Context, txn *sql.Tx, roomID string) (gomatrixserverlib.RoomVersion, error)
SelectRoomVersionForRoomNID(ctx context.Context, roomNID types.RoomNID) (gomatrixserverlib.RoomVersion, error)
SelectRoomInfo(ctx context.Context, roomID string) (*types.RoomInfo, error)
}
type Transactions interface {