82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
// Copyright 2017 Vector Creations Ltd
|
|
// Copyright 2018 New Vector Ltd
|
|
// Copyright 2019-2020 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 state
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
|
|
"github.com/matrix-org/dendrite/roomserver/state/database"
|
|
v1 "github.com/matrix-org/dendrite/roomserver/state/v1"
|
|
|
|
"github.com/matrix-org/dendrite/roomserver/types"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
)
|
|
|
|
type StateResolutionVersion int
|
|
|
|
const (
|
|
StateResolutionAlgorithmV1 StateResolutionVersion = iota + 1
|
|
StateResolutionAlgorithmV2
|
|
)
|
|
|
|
func GetStateResolutionAlgorithm(
|
|
version StateResolutionVersion, db database.RoomStateDatabase,
|
|
) (StateResolutionImpl, error) {
|
|
switch version {
|
|
case StateResolutionAlgorithmV1:
|
|
return v1.Prepare(db), nil
|
|
default:
|
|
return nil, errors.New("unsupported room version")
|
|
}
|
|
}
|
|
|
|
type StateResolutionImpl interface {
|
|
LoadStateAtSnapshot(
|
|
ctx context.Context, stateNID types.StateSnapshotNID,
|
|
) ([]types.StateEntry, error)
|
|
LoadStateAtEvent(
|
|
ctx context.Context, eventID string,
|
|
) ([]types.StateEntry, error)
|
|
LoadCombinedStateAfterEvents(
|
|
ctx context.Context, prevStates []types.StateAtEvent,
|
|
) ([]types.StateEntry, error)
|
|
DifferenceBetweeenStateSnapshots(
|
|
ctx context.Context, oldStateNID, newStateNID types.StateSnapshotNID,
|
|
) (removed, added []types.StateEntry, err error)
|
|
LoadStateAtSnapshotForStringTuples(
|
|
ctx context.Context,
|
|
stateNID types.StateSnapshotNID,
|
|
stateKeyTuples []gomatrixserverlib.StateKeyTuple,
|
|
) ([]types.StateEntry, error)
|
|
LoadStateAfterEventsForStringTuples(
|
|
ctx context.Context,
|
|
prevStates []types.StateAtEvent,
|
|
stateKeyTuples []gomatrixserverlib.StateKeyTuple,
|
|
) ([]types.StateEntry, error)
|
|
CalculateAndStoreStateBeforeEvent(
|
|
ctx context.Context,
|
|
event gomatrixserverlib.Event,
|
|
roomNID types.RoomNID,
|
|
) (types.StateSnapshotNID, error)
|
|
CalculateAndStoreStateAfterEvents(
|
|
ctx context.Context,
|
|
roomNID types.RoomNID,
|
|
prevStates []types.StateAtEvent,
|
|
) (types.StateSnapshotNID, error)
|
|
}
|