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- Added `SchedulerWorkerOptions` class to encapsulate configuration for the scheduler worker. - Introduced `PlannerBackgroundService` to manage the planner loop, fetching and processing planning runs. - Created `PlannerExecutionService` to handle the execution logic for planning runs, including impact targeting and run persistence. - Developed `PlannerExecutionResult` and `PlannerExecutionStatus` to standardize execution outcomes. - Implemented validation logic within `SchedulerWorkerOptions` to ensure proper configuration. - Added documentation for the planner loop and impact targeting features. - Established health check endpoints and authentication mechanisms for the Signals service. - Created unit tests for the Signals API to ensure proper functionality and response handling. - Configured options for authority integration and fallback authentication methods.
169 lines
9.3 KiB
Markdown
169 lines
9.3 KiB
Markdown
# StellaOps Architecture Overview (Sprint 19)
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> **Ownership:** Architecture Guild • Docs Guild
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> **Audience:** Service owners, platform engineers, solution architects
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> **Related:** [High-Level Architecture](../07_HIGH_LEVEL_ARCHITECTURE.md), [Concelier Architecture](../ARCHITECTURE_CONCELIER.md), [Policy Engine Architecture](policy-engine.md), [Aggregation-Only Contract](../ingestion/aggregation-only-contract.md)
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This dossier summarises the end-to-end runtime topology after the Aggregation-Only Contract (AOC) rollout. It highlights where raw facts live, how ingest services enforce guardrails, and how downstream components consume those facts to derive policy decisions and user-facing experiences.
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---
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## 1 · System landscape
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```mermaid
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graph TD
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subgraph Edge["Clients & Automation"]
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CLI[stella CLI]
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UI[Console SPA]
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APIClients[CI / API Clients]
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end
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Gateway[API Gateway<br/>(JWT + DPoP scopes)]
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subgraph Scanner["Fact Collection"]
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ScannerWeb[Scanner.WebService]
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ScannerWorkers[Scanner.Workers]
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Agent[Agent Runtime]
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end
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subgraph Ingestion["Aggregation-Only Ingestion (AOC)"]
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Concelier[Concelier.WebService]
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Excititor[Excititor.WebService]
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RawStore[(MongoDB<br/>advisory_raw / vex_raw)]
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end
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subgraph Derivation["Policy & Overlay"]
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Policy[Policy Engine]
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Scheduler[Scheduler Services]
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Notify[Notifier]
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end
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subgraph Experience["UX & Export"]
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UIService[Console Backend]
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Exporters[Export / Offline Kit]
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end
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Observability[Telemetry Stack]
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CLI --> Gateway
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UI --> Gateway
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APIClients --> Gateway
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Gateway --> ScannerWeb
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ScannerWeb --> ScannerWorkers
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ScannerWorkers --> Concelier
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ScannerWorkers --> Excititor
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Concelier --> RawStore
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Excititor --> RawStore
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RawStore --> Policy
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Policy --> Scheduler
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Policy --> Notify
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Policy --> UIService
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Scheduler --> UIService
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UIService --> Exporters
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Exporters --> CLI
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Exporters --> Offline[Offline Kit]
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Observability -.-> ScannerWeb
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Observability -.-> Concelier
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Observability -.-> Excititor
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Observability -.-> Policy
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Observability -.-> Scheduler
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Observability -.-> Notify
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```
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Key boundaries:
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- **AOC border.** Everything inside the Ingestion subgraph writes only immutable raw facts plus link hints. Derived severity, consensus, and risk remain outside the border.
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- **Policy-only derivation.** Policy Engine materialises `effective_finding_*` collections and emits overlays; other services consume but never mutate them.
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- **Tenant enforcement.** Authority-issued DPoP scopes flow through Gateway to every service; raw stores and overlays include `tenant` strictly.
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---
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## 2 · Aggregation-Only Contract focus
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### 2.1 Responsibilities at the boundary
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| Area | Services | Responsibilities under AOC | Forbidden under AOC |
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|------|----------|-----------------------------|---------------------|
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| **Ingestion (Concelier / Excititor)** | `StellaOps.Concelier.WebService`, `StellaOps.Excititor.WebService` | Fetch upstream advisories/VEX, verify signatures, compute linksets, append immutable documents to `advisory_raw` / `vex_raw`, emit observability signals, expose raw read APIs. | Computing severity, consensus, suppressions, or policy hints; merging upstream sources into a single derived record; mutating existing documents. |
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| **Policy & Overlay** | `StellaOps.Policy.Engine`, Scheduler | Join SBOM inventory with raw advisories/VEX, evaluate policies, issue `effective_finding_*` overlays, drive remediation workflows. | Writing to raw collections; bypassing guard scopes; running without recorded provenance. |
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| **Experience layers** | Console, CLI, Exporters | Surface raw facts + policy overlays; run `stella aoc verify`; render AOC dashboards and reports. | Accepting ingestion payloads that lack provenance or violate guard results. |
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### 2.2 Raw stores
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| Collection | Purpose | Key fields | Notes |
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|------------|---------|------------|-------|
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| `advisory_raw` | Immutable vendor/ecosystem advisory documents. | `_id`, `tenant`, `source.*`, `upstream.*`, `content.raw`, `linkset`, `supersedes`. | Idempotent by `(source.vendor, upstream.upstream_id, upstream.content_hash)`. |
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| `vex_raw` | Immutable vendor VEX statements. | Mirrors `advisory_raw`; `identifiers.statements` summarises affected components. | Maintains supersedes chain identical to advisory flow. |
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| Change streams (`advisory_raw_stream`, `vex_raw_stream`) | Feed Policy Engine and Scheduler. | `operationType`, `documentKey`, `fullDocument`, `tenant`, `traceId`. | Scope filtered per tenant before delivery. |
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### 2.3 Guarded ingestion sequence
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```mermaid
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sequenceDiagram
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participant Upstream as Upstream Source
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participant Connector as Concelier/Excititor Connector
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participant Guard as AOCWriteGuard
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participant Mongo as MongoDB (advisory_raw / vex_raw)
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participant Stream as Change Stream
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participant Policy as Policy Engine
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Upstream-->>Connector: CSAF / OSV / VEX document
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Connector->>Connector: Normalize transport, compute content_hash
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Connector->>Guard: Candidate raw doc (source + upstream + content + linkset)
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Guard-->>Connector: ERR_AOC_00x on violation
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Guard->>Mongo: Append immutable document (with tenant & supersedes)
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Mongo-->>Stream: Change event (tenant scoped)
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Stream->>Policy: Raw delta payload
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Policy->>Policy: Evaluate policies, compute effective findings
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```
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---
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### 2.4 Authority scopes & tenancy
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| Scope | Holder | Purpose | Notes |
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|-------|--------|---------|-------|
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| `advisory:ingest` / `vex:ingest` | Concelier / Excititor collectors | Append raw documents through ingestion endpoints. | Paired with tenant claims; requests without tenant are rejected. |
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| `advisory:read` / `vex:read` | DevOps verify identity, CLI | Run `stella aoc verify` or call `/aoc/verify`. | Read-only; cannot mutate raw docs. |
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| `effective:write` | Policy Engine | Materialise `effective_finding_*` overlays. | Only Policy Engine identity may hold; ingestion contexts receive `ERR_AOC_006` if they attempt. |
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| `findings:read` | Console, CLI, exports | Consume derived findings. | Enforced by Gateway and downstream services. |
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---
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## 3 · Data & control flow highlights
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1. **Ingestion:** Concelier / Excititor connectors fetch upstream documents, compute linksets, and hand payloads to `AOCWriteGuard`. Guards validate schema, provenance, forbidden fields, supersedes pointers, and append-only rules before writing to Mongo.
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2. **Verification:** `stella aoc verify` (CLI/CI) and `/aoc/verify` endpoints replay guard checks against stored documents, mapping `ERR_AOC_00x` codes to exit codes for automation.
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3. **Policy evaluation:** Mongo change streams deliver tenant-scoped raw deltas. Policy Engine joins SBOM inventory (via BOM Index), executes deterministic policies, writes overlays, and emits events to Scheduler/Notify.
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4. **Experience surfaces:** Console renders an AOC dashboard showing ingestion latency, guard violations, and supersedes depth. CLI exposes raw-document fetch helpers for auditing. Offline Kit bundles raw collections alongside guard configs to keep air-gapped installs verifiable.
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5. **Observability:** All services emit `ingestion_write_total`, `aoc_violation_total{code}`, `ingestion_latency_seconds`, and trace spans `ingest.fetch`, `ingest.transform`, `ingest.write`, `aoc.guard`. Logs correlate via `traceId`, `tenant`, `source.vendor`, and `content_hash`.
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---
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## 4 · Offline & disaster readiness
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- **Offline Kit:** Packages raw Mongo snapshots (`advisory_raw`, `vex_raw`) plus guard configuration and CLI verifier binaries so air-gapped sites can re-run AOC checks before promotion.
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- **Recovery:** Supersedes chains allow rollback to prior revisions without mutating documents. Disaster exercises must rehearse restoring from snapshot, replaying change streams into Policy Engine, and re-validating guard compliance.
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- **Migration:** Legacy normalised fields are moved to temporary views during cutover; ingestion runtime removes writes once guard-enforced path is live (see [Migration playbook](../ingestion/aggregation-only-contract.md#8-migration-playbook)).
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---
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## 5 · References
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- [Aggregation-Only Contract reference](../ingestion/aggregation-only-contract.md)
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- [Concelier architecture](../ARCHITECTURE_CONCELIER.md)
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- [Excititor architecture](../ARCHITECTURE_EXCITITOR.md)
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- [Policy Engine architecture](policy-engine.md)
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- [Authority service](../ARCHITECTURE_AUTHORITY.md)
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- [Observability standards (upcoming)](../observability/policy.md) – interim reference for telemetry naming.
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---
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## 6 · Compliance checklist
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- [ ] AOC guard enabled for all Concelier and Excititor write paths in production.
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- [ ] Mongo schema validators deployed for `advisory_raw` and `vex_raw`; change streams scoped per tenant.
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- [ ] Authority scopes (`advisory:*`, `vex:*`, `effective:*`) configured in Gateway and validated via integration tests.
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- [ ] `stella aoc verify` wired into CI/CD pipelines with seeded violation fixtures.
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- [ ] Console AOC dashboard and CLI documentation reference the new ingestion contract.
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- [ ] Offline Kit bundles include guard configs, verifier tooling, and documentation updates.
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- [ ] Observability dashboards include violation, latency, and supersedes depth metrics with alert thresholds.
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---
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*Last updated: 2025-10-26 (Sprint 19).*
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