migration-script-runner / msr-core / 1aba2c8d-b02f-4ba3-aeab-057d19af3164

100%

Build Type

push

circleci

Committed by Vova Lavrynovych

Commit Message

#50, #17: Add flexible rollback strategies with optional backup and down() migrations

Implemented four rollback strategies to give users control over migration rollback:
- BACKUP: Traditional backup/restore (default, backward compatible)
- DOWN: Call down() methods in reverse order (no backup needed)
- BOTH: Try down() first, fallback to backup
- NONE: No rollback, log warning only

Key changes:
- Made backup interface optional in IDatabaseMigrationHandler
- Added RollbackStrategy enum to Config
- Migrations can now implement optional down() method for reversible migrations
- Push scripts to executed array BEFORE execution for proper rollback tracking
- Added comprehensive error handling for all rollback scenarios
- Renamed test files to semantic names (optional-backup, rollback-edge-cases)

Breaking change: Service constructors now accept config as separate parameter

Documentation updates:
- Updated all 6 documentation files with rollback strategies
- Added comprehensive down() method guide with examples and best practices
- Updated API reference with RollbackStrategy enum and IRunnableScript.down()
- Added rollback behavior documentation to architecture guide

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