CloudMigrations: Break snapshot resources out into their own table (#89575)

* create a new table for migration resources

* remove raw result bytes from db

* more snapshot resource management stuff

* integrate new table with snapshots

* pass in result limit and offset as params

* combine create and update

* set up xorm store test

* add unit tests

* save some cpu

* remove unneeded arg

* regen swagger

* fix bug with result processing

* fix update create logic so that uid isn't required for lookup

* change offset to page

* regen swagger

* revert accidental changes to file

* curl command page should be 1 indexed

pkg/services/sqlstore/migrations/cloud_migrations.go

@@ -139,4 +139,23 @@ func addCloudMigrationsMigrations(mg *Migrator) {
 
 	errorStringColumn := Column{Name: "error_string", Type: DB_Text, Nullable: true}
 	mg.AddMigration("add snapshot error_string column", NewAddColumnMigration(migrationSnapshotTable, &errorStringColumn))
+
+	// --- create table for tracking resource migrations
+	migrationResourceTable := Table{
+		Name: "cloud_migration_resource",
+		Columns: []*Column{
+			{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
+			{Name: "uid", Type: DB_NVarchar, Length: 40, Nullable: false},
+			{Name: "resource_type", Type: DB_NVarchar, Length: 40, Nullable: false},
+			{Name: "resource_uid", Type: DB_NVarchar, Length: 40, Nullable: false},
+			{Name: "status", Type: DB_NVarchar, Length: 20, Nullable: false},
+			{Name: "error_string", Type: DB_Text, Nullable: true},
+			{Name: "snapshot_uid", Type: DB_NVarchar, Length: 40, Nullable: false},
+		},
+	}
+
+	mg.AddMigration("create cloud_migration_resource table v1", NewAddTableMigration(migrationResourceTable))
+
+	// -- delete the snapshot result column while still in the experimental phase
+	mg.AddMigration("delete cloud_migration_snapshot.result column", NewRawSQLMigration("ALTER TABLE cloud_migration_snapshot DROP COLUMN result"))
 }