516 frameworks micronaut mongodb migrations mongock
Skill jabrena/plinth/skills/516-frameworks-micronaut-mongodb-migrations-mongock
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Use when you need to add or review Mongock MongoDB data migrations in a Micronaut application — including Mongock runner/driver selection, Micronaut bean wiring, migration scan packages, @ChangeUnit classes, lock/transaction settings, and Testcontainers verification. This should trigger for requests such as Add Mongock migrations in Micronaut; Review Micronaut MongoDB data migrations; Configure Mongock change units with Micronaut Data MongoDB; Create Mongock change units for Micronaut MongoDB; Review Mongock migration ordering in a Micronaut service. Part of Plinth Toolkit
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SKILL.md
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Micronaut - MongoDB migrations (Mongock)
Apply Mongock migration guidelines for Micronaut and Micronaut Data MongoDB.
What is covered in this Skill?
- Mongock runner/driver selection for Micronaut projects
- Micronaut bean wiring for MongoDB client access and controlled migration execution
- Code-first
@ChangeUnitmigrations with@Executionand rollback hooks - Locking, idempotency, transaction limits, and startup/runtime trade-offs
- Integration tests with
@MicronautTestand Testcontainers MongoDB - Coordination with
@515-frameworks-micronaut-mongodb
Scope: Apply recommendations based on the reference rules and good/bad examples.
Constraints
Compile before Mongock or MongoDB migration changes; verify after changes.
- MANDATORY: Run
./mvnw compileormvn compilebefore applying any change - SAFETY: If compilation fails, stop immediately
- VERIFY: Run
./mvnw clean verifyormvn clean verifyafter applying improvements - BEFORE APPLYING: Read the reference for detailed rules and good/bad patterns
- EDGE CASE: If a Micronaut-specific Mongock runner is unavailable or incompatible, use an explicit standalone runner bean/job and document that trade-off
When to use this skill
- Add Mongock migrations in Micronaut
- Review Micronaut MongoDB data migrations
- Configure Mongock change units with Micronaut Data MongoDB
- Create Mongock change units for Micronaut MongoDB
- Review Mongock migration ordering in a Micronaut service
Workflow
- Read references and inspect MongoDB setup
Read references/516-frameworks-micronaut-mongodb-migrations-mongock.md, references/516-frameworks-micronaut-mongodb-migrations-mongock-antipatterns.md, and references/516-frameworks-micronaut-mongodb-migrations-mongock-parallel-change.md, then inspect pom.xml, Micronaut MongoDB configuration, and existing @515-frameworks-micronaut-mongodb persistence patterns.
- Choose runner, driver, and execution policy
Select compatible Mongock coordinates, wire the runner through Micronaut beans, configure migration scan packages, and decide startup vs controlled-job execution.
- Apply framework-aligned migrations
Implement/refactor @ChangeUnit classes with idempotent operations, explicit ordering, rollback hooks, and safe lock/transaction settings.
- Run verification and report results
Execute build/tests, including @MicronautTest with Testcontainers MongoDB where feasible, and summarize outcomes and follow-up risks.
Reference
For detailed guidance, examples, and constraints, see: