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annotations/_docs/02_document/diagrams/flows/flow_sse_subscription.md
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Oleksandr Bezdieniezhnykh 03f879206e docs+src: complete Steps 1-3 outcomes + auth re-sync baseline
This commit captures everything produced during autodev existing-code
Steps 1 (Document), 2 (Architecture Baseline Scan), and 3 (Test Spec),
together with the targeted auth + CORS re-sync triggered on 2026-05-14
when codebase drift was detected at Step 4 entry. None of this work was
previously committed.

Step 1 (Document) — 50+ _docs/02_document/ files: problem, solution,
architecture, system flows, glossary, module-layout, per-component
specs (01..06), modules, deployment, diagrams, data model, FINAL
report, verification log, discovery.

Step 2 (Architecture Baseline) — architecture_compliance_baseline.md.
Verdict PASS_WITH_WARNINGS (0 Critical, 0 High, 1 Medium, 2 Low). No
High/Critical findings; auto-chained to Step 3 per existing-code flow.

Step 3 (Test Spec) — _docs/02_document/tests/* (67 scenarios across
blackbox, security, resilience, resource-limit, performance), plus
e2e/docker-compose.test.yml, e2e/seed/run.sh, scripts/run-tests.sh,
scripts/run-performance-tests.sh. Coverage 88% over the active scope
(40 of 45 items covered, 6 RB-deferred, 5 documented-as-uncovered).

Targeted auth + CORS re-sync — replaces the deleted in-house token
issuer with a JWKS-verifier model. AuthController and TokenService
removed; JwtExtensions switched from HS256 symmetric to ES256 over
admin's JWKS. ConfigurationResolver and CorsConfigurationValidator
added under src/Infrastructure/. ADR-002 and ADR-006 retired; SEC-01,
SEC-02, SEC-03 marked Closed. One new testability risk recorded in
architecture.md Open Risks Section 6 (JWKS HTTPS gating).

Source changes:
- src/Auth/JwtExtensions.cs (modified) — ES256, JWKS, alg pinning
- src/Program.cs (modified) — DI wiring for ConfigurationResolver
  and CorsConfigurationValidator
- src/Controllers/AuthController.cs (deleted) — no in-service issuance
- src/Services/TokenService.cs (deleted) — same
- src/Infrastructure/ConfigurationResolver.cs (new)
- src/Infrastructure/CorsConfigurationValidator.cs (new)
- .env.example (new) — required env var documentation
- .gitignore (updated)

Cross-repo coordination: _docs/cross-repo/flights_h1_h2_h3_change_spec
captures the change-spec for downstream services that consumed the now
deleted /auth endpoints.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-14 20:19:05 +03:00

1.5 KiB

Flow F3 — Real-time SSE Subscription

Cross-reference: system-flows.md → Flow F3.

Sequence

sequenceDiagram
    autonumber
    participant UI
    participant Ctrl as AnnotationsController.Events (component 02 doc-ownership)
    participant Evt as AnnotationEventService (02)
    participant ProducerF1 as Flow F1 (annotation create)
    participant ProducerF8 as Flow F8 (dataset bulk status)

    UI->>Ctrl: GET /annotations/events (Accept: text/event-stream, JWT ANN)
    Ctrl->>Ctrl: set Content-Type: text/event-stream, no-cache
    Ctrl->>Evt: ReadAllAsync(cancellationToken)
    par event sources
        ProducerF1->>Evt: PublishAsync(eventDto)
        ProducerF8->>Evt: PublishAsync(eventDto)
    end
    Evt-->>Ctrl: yield AnnotationEventDto
    Ctrl-->>UI: data: {json}\n\n
    UI--xCtrl: client disconnects
    Ctrl->>Ctrl: cancellation token fires; loop exits

State

stateDiagram-v2
    [*] --> Subscribing
    Subscribing --> Streaming: header sent + reader attached
    Streaming --> Streaming: PublishAsync -> data frame
    Streaming --> Closed: client cancel / process restart
    Closed --> [*]

Notes

  • Channel is unbounded: a slow client cannot back-pressure the producer. If a client stalls indefinitely, memory growth is bounded by per-publisher cancellation tokens at the controller level. Step 4 verification candidate.
  • Cross-pod fan-out is not provided — each pod has its own channel. Sticky sessions or a broker-backed bus required for horizontal scale.