source code: py/probe_info_service/app_engine/migration_scripts/README.md

Probe Info Service Migration Scripts

This folder contains scripts to migrate existing stateful data.

The script name must follow the pattern migration_script_<order>.py, where <order> is the index number for the migration script. The module must contain exactly one instance of .migration_script_types.Migrator.

The RPC AdminService.RunMigrationScripts() attempts to run all migration scripts with <order> larger than the internal-cached incremental count in order. The RPC stops when either all migration scripts finish or a migration fails.