Implements Go domain and integration events with transactional outbox delivery.
npx skills add https://github.com/gabriellst/codm --skill event-go-gabriellst
Please help me install this Agent Skill. Skill: event-go Source: https://github.com/gabriellst/codm/tree/main/.claude/skills/event/go Command: npx skills add https://github.com/gabriellst/codm --skill event-go-gabriellst
types.DomainEvent[T] with past-tense naming, primitive-only payloads, and constructors. - Transactional Outbox: Enforces raising events inside entity methods and draining them via domainEventRepo.SaveAll inside the same unit of work, never publishing directly from use cases. - Integration Events: Covers cross-service events published only from handlers via ExternalMediator, plus UnmarshalDomainEvent/UnmarshalIntegrationEvent helpers for handlers. - Use Case: When adding a transcoding.transcoding_job.started event to a Go service, follow the registry patterns to create the payload struct, type alias, constructor, entity raise, and repository drain without breaking the outbox contract. ## Quick Start Ask the agent to create a new Go domain event for an aggregate in a bounded context following the event-go patterns and checklist.High-intent search queries and answers about installing and using this skill.
Define a payload struct with plain primitives and JSON tags, then declare a type alias like `type MyEvent = types.DomainEvent[MyPayload]` and a constructor calling `types.NewDomainEvent`. The alias automatically satisfies the DomainEventI interface.
Domain events stay within one bounded context and are dispatched in-process via the outbox and InternalMediator. Integration events cross service boundaries and are published by handlers through ExternalMediator to transports like Redis Streams.
Direct publishes bypass the transactional outbox, risking lost events if the database transaction rolls back. Instead, entities append events, the repository drains them via SaveAll inside the same unit of work, and the OutboxDispatcher delivers them.
A new type declared with `type X types.DomainEvent[P]` does not inherit the methods of DomainEvent[T], so it fails to satisfy DomainEventI. Using `=` creates an alias that keeps GetEventName and GetEntityID methods.
Payloads must use plain primitives such as string, uuid.UUID, int64, bool, and time.Time, each with a JSON tag. Domain entity pointers, value objects, and interface{} fields are prohibited because they break serialization.
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