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dendrite/roomserver/version/version.go

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// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package version
import (
"fmt"
"github.com/matrix-org/gomatrixserverlib"
)
// DefaultRoomVersion contains the room version that will, by
// default, be used to create new rooms on this server.
func DefaultRoomVersion() gomatrixserverlib.RoomVersion {
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return gomatrixserverlib.RoomVersionV9
}
// RoomVersions returns a map of all known room versions to this
// server.
func RoomVersions() map[gomatrixserverlib.RoomVersion]gomatrixserverlib.RoomVersionDescription {
return gomatrixserverlib.RoomVersions()
}
// SupportedRoomVersions returns a map of descriptions for room
// versions that are supported by this homeserver.
func SupportedRoomVersions() map[gomatrixserverlib.RoomVersion]gomatrixserverlib.RoomVersionDescription {
return gomatrixserverlib.SupportedRoomVersions()
}
// 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) (gomatrixserverlib.RoomVersionDescription, error) {
if version, ok := gomatrixserverlib.RoomVersions()[version]; ok {
return version, nil
}
return gomatrixserverlib.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) (gomatrixserverlib.RoomVersionDescription, error) {
result, err := RoomVersion(version)
if err != nil {
return gomatrixserverlib.RoomVersionDescription{}, err
}
if !result.Supported {
return gomatrixserverlib.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)
}