legacymigrate: add create_event column to mx_room_state if necessary

CHANGELOG.md

@@ -1,10 +1,10 @@
 # v26.04 (unreleased)
 
 * Rewrote bridge in Go using bridgev2 architecture.
-  * To migrate the bridge, simply upgrade in-place. The database and config
-    will be migrated automatically, although some parts of the config aren't
-    migrated (e.g. log config, permission types specific to the legacy bridge).
-    Taking backups beforehand is always recommended.
+  * To migrate the bridge, simply upgrade in-place from v0.15.3 or later. The
+    database and config will be migrated automatically, although some parts of
+    the config aren't migrated (e.g. log config, permission types specific to
+    the legacy bridge). Taking backups beforehand is always recommended.
   * It is recommended to check the config file after upgrading. If you have
     prevented the bridge from writing to the config, you should update it
     manually.

cmd/mautrix-telegram/legacymigrate.go

@@ -17,13 +17,17 @@
 package main
 
 import (
+	"context"
 	_ "embed"
+	"fmt"
 
+	"github.com/rs/zerolog"
 	up "go.mau.fi/util/configupgrade"
+	"go.mau.fi/util/dbutil"
 	"maunium.net/go/mautrix/bridgev2/bridgeconfig"
 )
 
-const legacyMigrateRenameTables = `
+const legacyMigrateRenameTablesQuery = `
 ALTER TABLE backfill_queue RENAME TO backfill_queue_old;
 ALTER TABLE bot_chat RENAME TO bot_chat_old;
 ALTER TABLE contact RENAME TO contact_old;
@@ -42,6 +46,28 @@ ALTER TABLE user_portal RENAME TO user_portal_old;
 DROP INDEX IF EXISTS telegram_file_mxc_idx;
 `
 
+func legacyMigrateRenameTables(ctx context.Context, db *dbutil.Database) error {
+	_, err := db.Exec(ctx, legacyMigrateRenameTablesQuery)
+	if err != nil {
+		return err
+	}
+	var mxVersion int
+	err = db.QueryRow(ctx, "SELECT version FROM mx_version").Scan(&mxVersion)
+	if err != nil {
+		return fmt.Errorf("failed to get mx_version: %w", err)
+	} else if mxVersion == 3 {
+		zerolog.Ctx(ctx).Debug().Msg("mx_version is 3, adding create_event column before running actual migration")
+		_, err = db.Exec(ctx, `
+			ALTER TABLE mx_room_state ADD COLUMN create_event TEXT;
+			UPDATE mx_version SET version=4;
+		`)
+		if err != nil {
+			return fmt.Errorf("failed to add create_event column to mx_room_state: %w", err)
+		}
+	}
+	return nil
+}
+
 //go:embed legacymigrate.sql
 var legacyMigrateCopyData string
 

go.mod

@@ -42,7 +42,7 @@ require (
 	golang.org/x/sync v0.20.0
 	golang.org/x/tools v0.43.0
 	gopkg.in/yaml.v3 v3.0.1
-	maunium.net/go/mautrix v0.26.5-0.20260403090948-59e52f7acd76
+	maunium.net/go/mautrix v0.26.5-0.20260404152556-105984c2b676
 	rsc.io/qr v0.2.0
 )
 

go.sum

@@ -236,7 +236,7 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 maunium.net/go/mauflag v1.0.0 h1:YiaRc0tEI3toYtJMRIfjP+jklH45uDHtT80nUamyD4M=
 maunium.net/go/mauflag v1.0.0/go.mod h1:nLivPOpTpHnpzEh8jEdSL9UqO9+/KBJFmNRlwKfkPeA=
-maunium.net/go/mautrix v0.26.5-0.20260403090948-59e52f7acd76 h1:uQeQD1mCHGamkmYhuPltZOEdYI8ag1gDQJ/adCLk6LM=
-maunium.net/go/mautrix v0.26.5-0.20260403090948-59e52f7acd76/go.mod h1:RUSMBPky3jhXB7Ux+AptfkEvFlJ4ajZKCYiXI8YzxVE=
+maunium.net/go/mautrix v0.26.5-0.20260404152556-105984c2b676 h1:1hc9asoUumM44g4jy43AomCovR4JFlMRU6ngrx/DJu4=
+maunium.net/go/mautrix v0.26.5-0.20260404152556-105984c2b676/go.mod h1:RUSMBPky3jhXB7Ux+AptfkEvFlJ4ajZKCYiXI8YzxVE=
 rsc.io/qr v0.2.0 h1:6vBLea5/NRMVTz8V66gipeLycZMl/+UlFmk8DvqQ6WY=
 rsc.io/qr v0.2.0/go.mod h1:IF+uZjkb9fqyeF/4tlBoynqmQxUoPfWEKh921coOuXs=