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Handle remote room upgrades (#2866)
Makes the following tests pass ``` /upgrade moves remote aliases to the new room Local and remote users' homeservers remove a room from their public directory on upgrade ```
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@ -23,6 +23,8 @@ import (
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"fmt"
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"time"
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"github.com/tidwall/gjson"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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"github.com/opentracing/opentracing-go"
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@ -409,6 +411,13 @@ func (r *Inputer) processRoomEvent(
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}
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}
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// Handle remote room upgrades, e.g. remove published room
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if event.Type() == "m.room.tombstone" && event.StateKeyEquals("") && !r.Cfg.Matrix.IsLocalServerName(senderDomain) {
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if err = r.handleRemoteRoomUpgrade(ctx, event); err != nil {
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return fmt.Errorf("failed to handle remote room upgrade: %w", err)
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}
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}
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// processing this event resulted in an event (which may not be the one we're processing)
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// being redacted. We are guaranteed to have both sides (the redaction/redacted event),
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// so notify downstream components to redact this event - they should have it if they've
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@ -434,6 +443,13 @@ func (r *Inputer) processRoomEvent(
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return nil
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}
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// handleRemoteRoomUpgrade updates published rooms and room aliases
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func (r *Inputer) handleRemoteRoomUpgrade(ctx context.Context, event *gomatrixserverlib.Event) error {
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oldRoomID := event.RoomID()
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newRoomID := gjson.GetBytes(event.Content(), "replacement_room").Str
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return r.DB.UpgradeRoom(ctx, oldRoomID, newRoomID, event.Sender())
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}
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// processStateBefore works out what the state is before the event and
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// then checks the event auths against the state at the time. It also
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// tries to determine what the history visibility was of the event at
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@ -172,4 +172,5 @@ type Database interface {
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ForgetRoom(ctx context.Context, userID, roomID string, forget bool) error
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GetHistoryVisibilityState(ctx context.Context, roomInfo *types.RoomInfo, eventID string, domain string) ([]*gomatrixserverlib.Event, error)
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UpgradeRoom(ctx context.Context, oldRoomID, newRoomID, eventSender string) error
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}
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@ -1408,6 +1408,36 @@ func (d *Database) ForgetRoom(ctx context.Context, userID, roomID string, forget
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})
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}
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func (d *Database) UpgradeRoom(ctx context.Context, oldRoomID, newRoomID, eventSender string) error {
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return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
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// un-publish old room
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if err := d.PublishedTable.UpsertRoomPublished(ctx, txn, oldRoomID, "", "", false); err != nil {
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return fmt.Errorf("failed to unpublish room: %w", err)
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}
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// publish new room
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if err := d.PublishedTable.UpsertRoomPublished(ctx, txn, newRoomID, "", "", true); err != nil {
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return fmt.Errorf("failed to publish room: %w", err)
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}
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// Migrate any existing room aliases
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aliases, err := d.RoomAliasesTable.SelectAliasesFromRoomID(ctx, txn, oldRoomID)
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if err != nil {
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return fmt.Errorf("failed to get room aliases: %w", err)
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}
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for _, alias := range aliases {
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if err = d.RoomAliasesTable.DeleteRoomAlias(ctx, txn, alias); err != nil {
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return fmt.Errorf("failed to remove room alias: %w", err)
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}
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if err = d.RoomAliasesTable.InsertRoomAlias(ctx, txn, alias, newRoomID, eventSender); err != nil {
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return fmt.Errorf("failed to set room alias: %w", err)
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}
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}
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return nil
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})
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}
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// FIXME TODO: Remove all this - horrible dupe with roomserver/state. Can't use the original impl because of circular loops
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// it should live in this package!
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@ -761,4 +761,6 @@ AS can publish rooms in their own list
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AS and main public room lists are separate
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/upgrade preserves direct room state
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local user has tags copied to the new room
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remote user has tags copied to the new room
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remote user has tags copied to the new room
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/upgrade moves remote aliases to the new room
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Local and remote users' homeservers remove a room from their public directory on upgrade
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