integration-implementation

Review the interface specifications in design_interface_contracts.md, then implement each endpoint to match the contract exactly. This Skill generates REST controllers, DTOs, and integration tests, documenting results in execution_integration_implementation.md.

Define a durable topic exchange and queue with binding keys, then publish events with RabbitTemplate and consume them with @RabbitListener services. The Skill includes publisher, listener, and configuration examples for order-created event flows.

Maintain the old API version through an adapter controller that calls the new v2 endpoints and transforms responses back to the legacy format. Add deprecation warnings to old endpoints and keep them running during the transition period.

Use gRPC for internal service-to-service calls where high performance and strongly typed contracts matter, and REST with JSON for external-facing APIs. The Skill implements both patterns based on what the design contracts specify.

It requires design_interface_contracts.md for API specifications, design_target_architecture.md for component boundaries and protocols, design_component_strategies.md for migration status, plus any OpenAPI documentation. Without these design artifacts, implementation cannot proceed reliably.