Event Consumption Model

Executive Summary

Event Consumption Model defines how Algosure modules and platform capabilities consume events. Consumers react to facts without mutating source ownership incorrectly.

Why This Exists

Event consumers drive cross-domain processes, AIOS orchestration, notifications, analytics projections, integration follow-up, and audit enrichment. Without clear rules, consumers can duplicate source facts or create hidden coupling.

Owner

The owner is the Chief Product Officer and Enterprise Architect.

Business Value

Governed consumption makes event-driven workflows reliable, auditable, and safe across tenants and Domains.

Consumption Flow

flowchart LR
    Event[Published Event]
    Handler[Consumer Handler]
    Idempotency[Idempotency Check]
    Reaction[Owned Reaction]
    Projection[Projection or Workflow State]
    Audit[Audit Record]

    Event --> Handler
    Handler --> Idempotency
    Idempotency --> Reaction
    Reaction --> Projection
    Reaction --> Audit

Consumer Types

Consumer	Valid Reaction
Domain module	Update own projections, start own workflow, request source module behavior through owned boundaries.
Workflow process	Advance cross-domain process state based on accepted facts.
AIOS	Assemble context, delegate Digital Professional work, produce recommendations, request approvals.
Notification	Create notification intent or delivery workflow from subscribed facts.
Analytics	Build projections, snapshots, metrics, reports, and executive insights.
Integration boundary	Publish external integration events or trigger external follow-up where approved.
Audit trail	Record event receipt, processing status, and traceability evidence.

Consumer Rules

Rule	Requirement
Consumers are idempotent	Reprocessing the same event must not duplicate irreversible effects.
Consumers own their reactions	The source publisher does not own consumer behavior.
Consumers do not mutate source ownership	A consumer must not directly change another module's records or facts.
Consumers respect tenant context	Event handling must validate tenant and organization context before acting.
Consumers handle unknown versions safely	Unknown or unsupported event versions must be rejected, parked, or handled by compatibility policy.
Consumers record failures	Failed processing must be visible for retry, dead-letter handling, and audit.

AIOS Consumption Rules

Rule	Meaning
AIOS reacts to events as triggers	Events may start or advance AIOS work, but AIOS output remains governed.
AIOS requests authorized context	Event metadata is not enough for full context; AIOS must request permitted source context.
AIOS returns proposals through workflows	Recommendations, drafts, and decisions are accepted only through owning application services.
AIOS events stay in Intelligence	AI task and reasoning facts are owned by Intelligence.

Non-Implementation Boundary

This document does not define handler class names, subscriber registration, queue consumers, framework annotations, storage mechanisms, or processing threads.