RTWO-EBUS-001Phase 12.5Structure Complete

Event Bus & Message Broker

Inter-module event communication layer — Runtime Federation Active — No Fabricated Events or Delivery Metrics

Event Bus Ready

Waiting for Real Events

⚠

Truthful Data Policy

Event Bus Architecture Ready — Structure Complete — Waiting for Real Event Sources. No fake events, messages, retries, queues, delivery metrics, or event traffic.

Module ID

RTWO-EBUS-001

Phase

12.5

Status

Structure Complete

Production

Pending Real Event Sources

Topics Defined

Active Publishers

0 — No Publishers Registered

Active Subscribers

0 — No Subscribers Registered

Dead Letter Queue

Empty

Domain Models

8 strongly typed domain models — architecture phase only

RTWOEventArchitecture Ready

Core event entity with full lifecycle tracking

eventIdeventTypesourceModuletargetModulepayloadReferenceprioritystatuscreatedAt

RTWOEventTopicArchitecture Ready

Named channel for event routing

topicIdtopicNamedescriptionstatus

RTWOPublisherArchitecture Ready

Module registered as event publisher

publisherIdmoduleIdsupportedEventsstatus

RTWOSubscriberArchitecture Ready

Module registered as event subscriber

subscriberIdmoduleIdsubscribedTopicsstatus

RTWOEventRouteArchitecture Ready

Routing rule between source and destination

routeIdsourceModuledestinationModuleroutingPolicystatus

RTWOEventDeliveryArchitecture Ready

Delivery attempt record with retry tracking

deliveryIdeventIddeliveryStatusretryCountdeadLettertimestamp

RTWODeadLetterQueueArchitecture Ready

Failed events after exhausting retries

queueIdreasoneventReferencestatus

RTWOEventMetadataArchitecture Ready

Event versioning and correlation metadata

metadataIdeventIdversionschemaVersioncorrelationIdstatus

Service Registry

12 services — all structure ready

Service	Status	Description
Event Registry	Not Initialized	Central registry for all RTWO events via engine source adapter ingestion.
Topic Registry	Not Initialized	Registry of architecture-defined RTWO event topics. No active publishers.
Publisher Registry	Not Initialized	Registry of active event publishers via engine source adapter. No publishers registered.
Subscriber Registry	Not Initialized	Registry of active event subscribers via engine source adapter. No subscribers registered.
Routing Engine	Not Initialized	Routes events from publishers to subscribers. No routes configured until real event sources connect.
Delivery Engine	Not Initialized	Delivers events to subscriber modules. No deliveries until real event sources connect.
Retry Manager	Not Initialized	Manages retry logic for failed deliveries. No retries until real event sources connect.
Dead Letter Queue	Not Initialized	Holds events that exhausted retry attempts. Dead letter queue is empty.
Metadata Service	Not Initialized	Manages event metadata. No metadata until real events flow from engine sources.
Event Bus Registry	Not Initialized	Central registry for all Event Bus services. 12 services registered in architecture.
Event Publisher	Not Initialized	Publishes events from RTWO modules to the event bus. No events published until real sources connect.
Readiness Service	Not Initialized	Reports Event Bus readiness state. Structure complete — pending real event sources.

Event Lifecycle

9-stage event lifecycle — architecture phase only

Created

Event created and registered in the event registry. Event ID assigned. Source module recorded.

Requires real event source module to be connected. No fake events created.

Validated

Event schema and payload validated against the registered event type definition.

Requires real event schema registry. No fake validation results.

Published

Event published to the event bus topic. Available for routing to subscribers.

Requires real publisher registration. No fake published events.

Routed

Event routed to the appropriate subscriber queues based on routing policy.

Requires real routing engine. No fake routing decisions.

Delivered

Event delivered to the target subscriber module. Awaiting acknowledgement.

Requires real delivery infrastructure. No fake delivery confirmations.

Acknowledged

Subscriber acknowledged receipt and processing of the event.

Requires real subscriber acknowledgement. No fake ACKs.

CompletedTerminal

Event lifecycle completed successfully. Event archived.

Terminal success state. Requires real end-to-end event pipeline.

Failed

Event delivery failed. Retry manager will attempt redelivery based on retry policy.

Requires real retry infrastructure. No fake retry counts.

Dead LetterTerminal

Event moved to dead letter queue after exhausting retry attempts.

Terminal failure state. Dead letter queue is empty — no fake dead letters.