880d8ae024
* Rough first pass at adding room version abstractions * Define newer room versions * Update room version metadata * Fix roomserver/versions * Try to fix whitespace in roomsSchema
66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
package state
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import (
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"context"
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"errors"
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"github.com/matrix-org/dendrite/roomserver/state/database"
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v1 "github.com/matrix-org/dendrite/roomserver/state/v1"
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"github.com/matrix-org/dendrite/roomserver/types"
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"github.com/matrix-org/gomatrixserverlib"
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)
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type StateResolutionVersion int
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const (
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StateResolutionAlgorithmV1 StateResolutionVersion = iota + 1
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StateResolutionAlgorithmV2
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)
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func GetStateResolutionAlgorithm(
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version StateResolutionVersion, db database.RoomStateDatabase,
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) (StateResolutionImpl, error) {
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switch version {
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case StateResolutionAlgorithmV1:
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return v1.Prepare(db), nil
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default:
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return nil, errors.New("unsupported room version")
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}
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}
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type StateResolutionImpl interface {
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LoadStateAtSnapshot(
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ctx context.Context, stateNID types.StateSnapshotNID,
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) ([]types.StateEntry, error)
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LoadStateAtEvent(
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ctx context.Context, eventID string,
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) ([]types.StateEntry, error)
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LoadCombinedStateAfterEvents(
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ctx context.Context, prevStates []types.StateAtEvent,
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) ([]types.StateEntry, error)
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DifferenceBetweeenStateSnapshots(
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ctx context.Context, oldStateNID, newStateNID types.StateSnapshotNID,
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) (removed, added []types.StateEntry, err error)
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LoadStateAtSnapshotForStringTuples(
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ctx context.Context,
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stateNID types.StateSnapshotNID,
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stateKeyTuples []gomatrixserverlib.StateKeyTuple,
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) ([]types.StateEntry, error)
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LoadStateAfterEventsForStringTuples(
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ctx context.Context,
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prevStates []types.StateAtEvent,
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stateKeyTuples []gomatrixserverlib.StateKeyTuple,
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) ([]types.StateEntry, error)
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CalculateAndStoreStateBeforeEvent(
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ctx context.Context,
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event gomatrixserverlib.Event,
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roomNID types.RoomNID,
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) (types.StateSnapshotNID, error)
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CalculateAndStoreStateAfterEvents(
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ctx context.Context,
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roomNID types.RoomNID,
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prevStates []types.StateAtEvent,
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) (types.StateSnapshotNID, error)
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}
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