stream-hub-core

Framework-agnostic headless core for Stream Hub.

stream-hub-core is no longer positioned as a pluggable UI engine. In the v1 direction it focuses on stream models, low-level write commands, command buses, backend contracts, and reusable framework-agnostic building blocks.

Current Scope

The package currently provides:

• core models:
  • Stream
  • StreamEvent
  • StreamParticipant
• backend contract:
  • StreamBackendInterface
• application context contract:
  • StreamContextInterface
• command contracts:
  • StreamCommandInterface
  • StreamCommandHandlerInterface
• buses:
  • CommandBusInterface
  • ModelCommandBusInterface
  • CommandBus
  • GuardedCommandBus
• thin application facade:
  • StreamHubInterface
  • StreamHub
• guard contracts for high-level commands:
  • StreamCommandGuardInterface
  • GuardDecision
• low-level core commands and handlers:
  • create stream
  • join stream
  • append stream event
  • mark stream read
• identifier generation:
  • IdentifierGeneratorInterface
  • RandomHexIdentifierGenerator
  • UuidV4IdentifierGenerator
  • UuidV7IdentifierGenerator

Design Notes

• Core models are not persistence entities.
• Project-specific enrichment belongs in backend adapters and mappers.
• High-level feature commands may be guarded before handler execution.
• Low-level model commands should stay internal and should not be guarded.
• High-level feature workflows should orchestrate low-level core commands instead of writing directly to storage when a generic low-level command already exists.
• Business authorization rules should live in the application or policy layer, not in the backend contract.

Development

Run tests:

make test

Run deptrac:

vendor/bin/deptrac analyse