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Update room version descriptors, add error handling (#906)

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* Update room version descriptors, add error handling

* Fix database queries

* Drop Get from version package

* Fix database wrapping, add comments for version descriptions

* Don't set default room_version value in SQL
This commit is contained in:
Neil Alexander 2020-03-16 16:05:29 +00:00 committed by GitHub
parent dfd8b93d93
commit 452f393dd7
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 121 additions and 95 deletions
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2
go.mod
View file

@ -10,7 +10,7 @@ require (
github.com/matrix-org/go-http-js-libp2p v0.0.0-20200310180544-7f3fad43b51c
github.com/matrix-org/go-sqlite3-js v0.0.0-20200304164012-aa524245b658
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26
github.com/matrix-org/gomatrixserverlib v0.0.0-20200306154041-df6bb9a3e424
github.com/matrix-org/gomatrixserverlib v0.0.0-20200316144058-cc6847798a3f
github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7
github.com/mattn/go-sqlite3 v2.0.2+incompatible

4
go.sum
View file

@ -138,6 +138,10 @@ github.com/matrix-org/gomatrixserverlib v0.0.0-20200124100636-0c2ec91d1df5 h1:km
github.com/matrix-org/gomatrixserverlib v0.0.0-20200124100636-0c2ec91d1df5/go.mod h1:FsKa2pWE/bpQql9H7U4boOPXFoJX/QcqaZZ6ijLkaZI=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200306154041-df6bb9a3e424 h1:H61lT6ckUFIDl9qb636qNomfo0B52lFt73ecioiqF10=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200306154041-df6bb9a3e424/go.mod h1:FsKa2pWE/bpQql9H7U4boOPXFoJX/QcqaZZ6ijLkaZI=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200316100021-ac4a53d49690 h1:aQPPypOdoIsquJHhoalRYvKtDoiJfSyyJqOEn6R7yTY=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200316100021-ac4a53d49690/go.mod h1:FsKa2pWE/bpQql9H7U4boOPXFoJX/QcqaZZ6ijLkaZI=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200316144058-cc6847798a3f h1:JXSvzG4movqXT1KcdX+XZ9HM61m1FW4rIMFKUM9j/Dk=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200316144058-cc6847798a3f/go.mod h1:FsKa2pWE/bpQql9H7U4boOPXFoJX/QcqaZZ6ijLkaZI=
github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1 h1:osLoFdOy+ChQqVUn2PeTDETFftVkl4w9t/OW18g3lnk=
github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1/go.mod h1:cXoYQIENbdWIQHt1SyCo6Bl3C3raHwJ0wgVrXHSqf+A=
github.com/matrix-org/util v0.0.0-20171127121716-2e2df66af2f5 h1:W7l5CP4V7wPyPb4tYE11dbmeAOwtFQBTW0rf4OonOS8=

7
roomserver/query/query.go
View file

@ -20,7 +20,6 @@ import (
"context"
"encoding/json"
"net/http"
"strconv"
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/roomserver/api"
@ -733,10 +732,10 @@ func (r *RoomserverQueryAPI) QueryRoomVersionCapabilities(
request *api.QueryRoomVersionCapabilitiesRequest,
response *api.QueryRoomVersionCapabilitiesResponse,
) error {
response.DefaultRoomVersion = strconv.Itoa(int(version.GetDefaultRoomVersion()))
response.DefaultRoomVersion = string(version.DefaultRoomVersion())
response.AvailableRoomVersions = make(map[string]string)
for v, desc := range version.GetSupportedRoomVersions() {
sv := strconv.Itoa(int(v))
for v, desc := range version.SupportedRoomVersions() {
sv := string(v)
if desc.Stable {
response.AvailableRoomVersions[sv] = "stable"
} else {

2
roomserver/storage/interface.go
View file

@ -45,5 +45,5 @@ type Database interface {
GetMembership(ctx context.Context, roomNID types.RoomNID, requestSenderUserID string) (membershipEventNID types.EventNID, stillInRoom bool, err error)
GetMembershipEventNIDsForRoom(ctx context.Context, roomNID types.RoomNID, joinOnly bool) ([]types.EventNID, error)
EventsFromIDs(ctx context.Context, eventIDs []string) ([]types.Event, error)
GetRoomVersionForRoom(ctx context.Context, roomNID types.RoomNID) (int64, error)
GetRoomVersionForRoom(ctx context.Context, roomNID types.RoomNID) (gomatrixserverlib.RoomVersion, error)
}

14
roomserver/storage/postgres/rooms_table.go
View file

@ -22,6 +22,7 @@ import (
"github.com/lib/pq"
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib"
)
const roomsSchema = `
@ -42,13 +43,13 @@ CREATE TABLE IF NOT EXISTS roomserver_rooms (
state_snapshot_nid BIGINT NOT NULL DEFAULT 0,
-- The version of the room, which will assist in determining the state resolution
-- algorithm, event ID format, etc.
room_version BIGINT NOT NULL DEFAULT 1
room_version TEXT NOT NULL
);
`
// Same as insertEventTypeNIDSQL
const insertRoomNIDSQL = "" +
"INSERT INTO roomserver_rooms (room_id) VALUES ($1)" +
"INSERT INTO roomserver_rooms (room_id, room_version) VALUES ($1, $2)" +
" ON CONFLICT ON CONSTRAINT roomserver_room_id_unique" +
" DO NOTHING RETURNING (room_nid)"
@ -92,11 +93,12 @@ func (s *roomStatements) prepare(db *sql.DB) (err error) {
}
func (s *roomStatements) insertRoomNID(
ctx context.Context, txn *sql.Tx, roomID string,
ctx context.Context, txn *sql.Tx,
roomID string, roomVersion gomatrixserverlib.RoomVersion,
) (types.RoomNID, error) {
var roomNID int64
stmt := common.TxStmt(txn, s.insertRoomNIDStmt)
err := stmt.QueryRowContext(ctx, roomID).Scan(&roomNID)
err := stmt.QueryRowContext(ctx, roomID, roomVersion).Scan(&roomNID)
return types.RoomNID(roomNID), err
}
@ -165,8 +167,8 @@ func (s *roomStatements) updateLatestEventNIDs(
func (s *roomStatements) selectRoomVersionForRoomNID(
ctx context.Context, txn *sql.Tx, roomNID types.RoomNID,
) (int64, error) {
var roomVersion int64
) (gomatrixserverlib.RoomVersion, error) {
var roomVersion gomatrixserverlib.RoomVersion
stmt := common.TxStmt(txn, s.selectRoomVersionForRoomNIDStmt)
err := stmt.QueryRowContext(ctx, roomNID).Scan(&roomVersion)
return roomVersion, err

13
roomserver/storage/postgres/storage.go
View file

@ -68,7 +68,8 @@ func (d *Database) StoreEvent(
}
}
if roomNID, err = d.assignRoomNID(ctx, nil, event.RoomID()); err != nil {
// TODO: Room version here
if roomNID, err = d.assignRoomNID(ctx, nil, event.RoomID(), "1"); err != nil {
return 0, types.StateAtEvent{}, err
}
@ -121,13 +122,14 @@ func (d *Database) StoreEvent(
}
func (d *Database) assignRoomNID(
ctx context.Context, txn *sql.Tx, roomID string,
ctx context.Context, txn *sql.Tx,
roomID string, roomVersion gomatrixserverlib.RoomVersion,
) (types.RoomNID, error) {
// Check if we already have a numeric ID in the database.
roomNID, err := d.statements.selectRoomNID(ctx, txn, roomID)
if err == sql.ErrNoRows {
// We don't have a numeric ID so insert one into the database.
roomNID, err = d.statements.insertRoomNID(ctx, txn, roomID)
roomNID, err = d.statements.insertRoomNID(ctx, txn, roomID, roomVersion)
if err == sql.ErrNoRows {
// We raced with another insert so run the select again.
roomNID, err = d.statements.selectRoomNID(ctx, txn, roomID)
@ -494,7 +496,8 @@ func (d *Database) MembershipUpdater(
}
}()
roomNID, err := d.assignRoomNID(ctx, txn, roomID)
// TODO: Room version here
roomNID, err := d.assignRoomNID(ctx, txn, roomID, "1")
if err != nil {
return nil, err
}
@ -699,7 +702,7 @@ func (d *Database) EventsFromIDs(ctx context.Context, eventIDs []string) ([]type
func (d *Database) GetRoomVersionForRoom(
ctx context.Context, roomNID types.RoomNID,
) (int64, error) {
) (gomatrixserverlib.RoomVersion, error) {
return d.statements.selectRoomVersionForRoomNID(
ctx, nil, roomNID,
)

14
roomserver/storage/sqlite3/rooms_table.go
View file

@ -22,6 +22,7 @@ import (
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib"
)
const roomsSchema = `
@ -31,13 +32,13 @@ const roomsSchema = `
latest_event_nids TEXT NOT NULL DEFAULT '[]',
last_event_sent_nid INTEGER NOT NULL DEFAULT 0,
state_snapshot_nid INTEGER NOT NULL DEFAULT 0,
room_version INTEGER NOT NULL DEFAULT 1
room_version TEXT NOT NULL
);
`
// Same as insertEventTypeNIDSQL
const insertRoomNIDSQL = `
INSERT INTO roomserver_rooms (room_id) VALUES ($1)
INSERT INTO roomserver_rooms (room_id, room_version) VALUES ($1, $2)
ON CONFLICT DO NOTHING;
`
@ -81,11 +82,12 @@ func (s *roomStatements) prepare(db *sql.DB) (err error) {
}
func (s *roomStatements) insertRoomNID(
ctx context.Context, txn *sql.Tx, roomID string,
ctx context.Context, txn *sql.Tx,
roomID string, roomVersion gomatrixserverlib.RoomVersion,
) (types.RoomNID, error) {
var err error
insertStmt := common.TxStmt(txn, s.insertRoomNIDStmt)
if _, err = insertStmt.ExecContext(ctx, roomID); err == nil {
if _, err = insertStmt.ExecContext(ctx, roomID, roomVersion); err == nil {
return s.selectRoomNID(ctx, txn, roomID)
} else {
return types.RoomNID(0), err
@ -157,8 +159,8 @@ func (s *roomStatements) updateLatestEventNIDs(
func (s *roomStatements) selectRoomVersionForRoomNID(
ctx context.Context, txn *sql.Tx, roomNID types.RoomNID,
) (int64, error) {
var roomVersion int64
) (gomatrixserverlib.RoomVersion, error) {
var roomVersion gomatrixserverlib.RoomVersion
stmt := common.TxStmt(txn, s.selectRoomVersionForRoomNIDStmt)
err := stmt.QueryRowContext(ctx, roomNID).Scan(&roomVersion)
return roomVersion, err

13
roomserver/storage/sqlite3/storage.go
View file

@ -90,7 +90,8 @@ func (d *Database) StoreEvent(
}
}
if roomNID, err = d.assignRoomNID(ctx, txn, event.RoomID()); err != nil {
// TODO: Room version here
if roomNID, err = d.assignRoomNID(ctx, txn, event.RoomID(), "1"); err != nil {
return err
}
@ -150,13 +151,14 @@ func (d *Database) StoreEvent(
}
func (d *Database) assignRoomNID(
ctx context.Context, txn *sql.Tx, roomID string,
ctx context.Context, txn *sql.Tx,
roomID string, roomVersion gomatrixserverlib.RoomVersion,
) (roomNID types.RoomNID, err error) {
// Check if we already have a numeric ID in the database.
roomNID, err = d.statements.selectRoomNID(ctx, txn, roomID)
if err == sql.ErrNoRows {
// We don't have a numeric ID so insert one into the database.
roomNID, err = d.statements.insertRoomNID(ctx, txn, roomID)
roomNID, err = d.statements.insertRoomNID(ctx, txn, roomID, roomVersion)
if err == nil {
// Now get the numeric ID back out of the database
roomNID, err = d.statements.selectRoomNID(ctx, txn, roomID)
@ -630,7 +632,8 @@ func (d *Database) MembershipUpdater(
}
}()
roomNID, err := d.assignRoomNID(ctx, txn, roomID)
// TODO: Room version here
roomNID, err := d.assignRoomNID(ctx, txn, roomID, "1")
if err != nil {
return nil, err
}
@ -853,7 +856,7 @@ func (d *Database) EventsFromIDs(ctx context.Context, eventIDs []string) ([]type
func (d *Database) GetRoomVersionForRoom(
ctx context.Context, roomNID types.RoomNID,
) (int64, error) {
) (gomatrixserverlib.RoomVersion, error) {
return d.statements.selectRoomVersionForRoomNID(
ctx, nil, roomNID,
)

147
roomserver/version/version.go
View file

@ -15,85 +15,64 @@
package version
import (
"errors"
"fmt"
"github.com/matrix-org/dendrite/roomserver/state"
)
type RoomVersionID int
type EventFormatID int
const (
RoomVersionV1 RoomVersionID = iota + 1
RoomVersionV2
RoomVersionV3
RoomVersionV4
RoomVersionV5
)
const (
EventFormatV1 EventFormatID = iota + 1 // original event ID formatting
EventFormatV2 // event ID is event hash
EventFormatV3 // event ID is URL-safe base64 event hash
"github.com/matrix-org/gomatrixserverlib"
)
// RoomVersionDescription contains information about a room version,
// namely whether it is marked as supported or stable in this server
// version.
// A version is supported if the server has some support for rooms
// that are this version. A version is marked as stable or unstable
// in order to hint whether the version should be used to clients
// calling the /capabilities endpoint.
// https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-client-r0-capabilities
type RoomVersionDescription struct {
Supported bool
Stable bool
StateResolution state.StateResolutionVersion
EventFormat EventFormatID
EnforceSigningKeyValidity bool
Supported bool
Stable bool
}
var roomVersions = map[RoomVersionID]RoomVersionDescription{
RoomVersionV1: RoomVersionDescription{
Supported: true,
Stable: true,
StateResolution: state.StateResolutionAlgorithmV1,
EventFormat: EventFormatV1,
EnforceSigningKeyValidity: false,
var roomVersions = map[gomatrixserverlib.RoomVersion]RoomVersionDescription{
gomatrixserverlib.RoomVersionV1: RoomVersionDescription{
Supported: true,
Stable: true,
},
RoomVersionV2: RoomVersionDescription{
Supported: false,
Stable: true,
StateResolution: state.StateResolutionAlgorithmV2,
EventFormat: EventFormatV1,
EnforceSigningKeyValidity: false,
gomatrixserverlib.RoomVersionV2: RoomVersionDescription{
Supported: false,
Stable: false,
},
RoomVersionV3: RoomVersionDescription{
Supported: false,
Stable: true,
StateResolution: state.StateResolutionAlgorithmV2,
EventFormat: EventFormatV2,
EnforceSigningKeyValidity: false,
gomatrixserverlib.RoomVersionV3: RoomVersionDescription{
Supported: false,
Stable: false,
},
RoomVersionV4: RoomVersionDescription{
Supported: false,
Stable: true,
StateResolution: state.StateResolutionAlgorithmV2,
EventFormat: EventFormatV3,
EnforceSigningKeyValidity: false,
gomatrixserverlib.RoomVersionV4: RoomVersionDescription{
Supported: false,
Stable: false,
},
RoomVersionV5: RoomVersionDescription{
Supported: false,
Stable: true,
StateResolution: state.StateResolutionAlgorithmV2,
EventFormat: EventFormatV3,
EnforceSigningKeyValidity: true,
gomatrixserverlib.RoomVersionV5: RoomVersionDescription{
Supported: false,
Stable: false,
},
}
func GetDefaultRoomVersion() RoomVersionID {
return RoomVersionV1
// DefaultRoomVersion contains the room version that will, by
// default, be used to create new rooms on this server.
func DefaultRoomVersion() gomatrixserverlib.RoomVersion {
return gomatrixserverlib.RoomVersionV1
}
func GetRoomVersions() map[RoomVersionID]RoomVersionDescription {
// RoomVersions returns a map of all known room versions to this
// server.
func RoomVersions() map[gomatrixserverlib.RoomVersion]RoomVersionDescription {
return roomVersions
}
func GetSupportedRoomVersions() map[RoomVersionID]RoomVersionDescription {
versions := make(map[RoomVersionID]RoomVersionDescription)
for id, version := range GetRoomVersions() {
// SupportedRoomVersions returns a map of descriptions for room
// versions that are supported by this homeserver.
func SupportedRoomVersions() map[gomatrixserverlib.RoomVersion]RoomVersionDescription {
versions := make(map[gomatrixserverlib.RoomVersion]RoomVersionDescription)
for id, version := range RoomVersions() {
if version.Supported {
versions[id] = version
}
@ -101,12 +80,46 @@ func GetSupportedRoomVersions() map[RoomVersionID]RoomVersionDescription {
return versions
}
func GetSupportedRoomVersion(version RoomVersionID) (desc RoomVersionDescription, err error) {
// RoomVersion returns information about a specific room version.
// An UnknownVersionError is returned if the version is not known
// to the server.
func RoomVersion(version gomatrixserverlib.RoomVersion) (RoomVersionDescription, error) {
if version, ok := roomVersions[version]; ok {
desc = version
return version, nil
}
if !desc.Supported {
err = errors.New("unsupported room version")
}
return
return RoomVersionDescription{}, UnknownVersionError{version}
}
// SupportedRoomVersion returns information about a specific room
// version. An UnknownVersionError is returned if the version is not
// known to the server, or an UnsupportedVersionError is returned if
// the version is known but specifically marked as unsupported.
func SupportedRoomVersion(version gomatrixserverlib.RoomVersion) (RoomVersionDescription, error) {
result, err := RoomVersion(version)
if err != nil {
return RoomVersionDescription{}, err
}
if !result.Supported {
return RoomVersionDescription{}, UnsupportedVersionError{version}
}
return result, nil
}
// UnknownVersionError is caused when the room version is not known.
type UnknownVersionError struct {
Version gomatrixserverlib.RoomVersion
}
func (e UnknownVersionError) Error() string {
return fmt.Sprintf("room version '%s' is not known", e.Version)
}
// UnsupportedVersionError is caused when the room version is specifically
// marked as unsupported.
type UnsupportedVersionError struct {
Version gomatrixserverlib.RoomVersion
}
func (e UnsupportedVersionError) Error() string {
return fmt.Sprintf("room version '%s' is marked as unsupported", e.Version)
}