Encryption: Add support for multiple data keys per day (#47765)

* Add database migrations

* Use short uids as data key ids

* Add support for manual data key rotation

* Fix duplicated mutex unlocks

* Fix migration

* Manage current data keys per name

* Adjust key re-encryption and test

* Modify rename column migration for MySQL compatibility

* Refactor secrets manager and data keys cache

* Multiple o11y adjustments

* Fix stats query

* Apply suggestions from code review

Co-authored-by: Tania <yalyna.ts@gmail.com>

* Fix linter

* Docs: Rotate data encryption keys API endpoint

Co-authored-by: Tania <yalyna.ts@gmail.com>

pkg/services/sqlstore/migrations/secrets_mig.go

@@ -1,6 +1,10 @@
 package migrations
 
-import "github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+import (
+	"fmt"
+
+	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+)
 
 func addSecretsMigration(mg *migrator.Migrator) {
 	dataKeysV1 := migrator.Table{
@@ -38,4 +42,23 @@ func addSecretsMigration(mg *migrator.Migrator) {
 	}
 
 	mg.AddMigration("create secrets table", migrator.NewAddTableMigration(secretsV1))
+
+	mg.AddMigration("rename data_keys name column to id", migrator.NewRenameColumnMigration(
+		dataKeysV1, "name", "id",
+	))
+
+	mg.AddMigration("add name column into data_keys", migrator.NewAddColumnMigration(
+		dataKeysV1,
+		&migrator.Column{
+			Name:     "name",
+			Type:     migrator.DB_NVarchar,
+			Length:   100,
+			Default:  "''",
+			Nullable: false,
+		},
+	))
+
+	mg.AddMigration("copy data_keys id column values into name", migrator.NewRawSQLMigration(
+		fmt.Sprintf("UPDATE %s SET %s = %s", dataKeysV1.Name, "name", "id"),
+	))
 }