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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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9 changed files with 121 additions and 95 deletions
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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)
}