e8537460a3
- Introduced AGENTS.md, README.md, TASKS.md, and implementation_plan.md for Vexer, detailing mission, responsibilities, key components, and operational notes. - Established similar documentation structure for Vulnerability Explorer and Zastava modules, including their respective workflows, integrations, and observability notes. - Created risk scoring profiles documentation outlining the core workflow, factor model, governance, and deliverables. - Ensured all modules adhere to the Aggregation-Only Contract and maintain determinism and provenance in outputs.
65 lines
4.4 KiB
Markdown
65 lines
4.4 KiB
Markdown
# Implementation plan — Graph
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## Delivery phases
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- **Phase 1 – Graph Indexer foundations**
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Stand up Graph Indexer service, node/edge schemas, ingestion from SBOM/Concelier/Excititor events, identity stability, and snapshot materialisation.
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- **Phase 2 – Graph API service**
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Expose search, query, path, impact, diff, and overlay endpoints with RBAC, cost controls, and streaming responses.
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- **Phase 3 – Console & CLI experiences**
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Ship Graph Explorer UI (WebGL canvas, filters, diff mode, overlays) and CLI (`stella sbom graph ...`) for automation pipelines.
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- **Phase 4 – Advanced analytics**
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Implement clustering, centrality, saved queries, overlay caching, and Policy Engine explain integration.
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- **Phase 5 – Exports & offline**
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Deliver GraphML/CSV/NDJSON exports, Offline Kit bundles (`nodes.jsonl`, `edges.jsonl`, overlays), and deterministic manifests.
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- **Phase 6 – Observability & hardening**
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Complete dashboards, alerts, runbooks, load/perf testing, and a11y/accessibility review.
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## Work breakdown
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- **Services**
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- Graph Indexer: event consumers, node/edge builders, snapshot/version handling, aggregate metrics.
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- Graph API: validation, planner/cost guard, streaming tile engine, diff/overlay builder, exports.
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- Worker jobs: clustering, diff, overlay materialisation with backpressure awareness.
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- **Data model & storage**
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- Collections/tables (`graph_nodes`, `graph_edges`, `graph_snapshots`, `graph_saved_queries`, `graph_overlays_cache`), indexes, tenant partitioning, append-only change logs.
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- Evaluate document + adjacency vs graph DB abstraction; ensure deterministic serialization for exports.
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- **Console**
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- Feature module `graph-explorer` with routes, canvas renderer, panels, diff UI, saved queries, export workflows, a11y pass.
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- Telemetry instrumentation for user interactions and query budgets.
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- **CLI & SDK**
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- `stella sbom graph query|diff|impact|export`, with JSON schema and piping support.
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- SDK utilities for automation and CI pipelines.
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- **Policy & VEX integration**
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- Fetch explain traces for policy overlays, integrate VEX suppressions, align with Policy Engine & VEX Lens data models.
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- **Observability & Ops**
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- Metrics (ingest lag, query latency, cache hit rate), log/traces, dashboards, alerting for runaway queries and OOM.
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- Runbooks for incident classes (query denial, cache poisoning, degraded render).
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- **Documentation**
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- Maintain overview, API, query language, console guide, CLI reference, policy/VEX integration docs with compliance checklists.
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## Acceptance criteria
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- Graph Indexer ingests SBOM/advisory/VEX events deterministically with tenant isolation and append-only provenance.
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- Graph API serves search/query/path/diff/overlay endpoints within budgeted latency and enforces cost limits + RBAC.
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- Console explorer visualises topology, overlays, diffs, saved queries; CLI commands mirror functionality for automation.
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- Exports (GraphML/CSV/NDJSON) and Offline Kit bundles reproduce snapshots and overlays with signed manifests.
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- Observability dashboards/alerts detect ingest lag, query failures, cache churn, and memory pressure; runbooks guide remediation.
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- Policy/VEX overlays align with Policy Engine explain traces and VEX suppressions.
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## Risks & mitigations
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- **Graph scale/complexity:** adopt adjacency compression, cached overlays, streaming pagination, enforced query budgets.
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- **Tenant bleed:** strict tenant filters, fuzz tests, data masking, compliance reviews.
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- **Runaway queries/visualization:** cost planner, query timeout, UI hints, safe mode renders.
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- **Cache poisoning:** input validation, schema versioning, eviction policies.
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- **Offline parity gaps:** deterministic export pipeline, integration tests for Offline Kit import.
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## Test strategy
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- **Unit:** node/edge builders, identifier stability, overlay computations, query planner, diff engine.
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- **Integration:** end-to-end ingest + query flows across SBOM/advisory/VEX, saved query execution, diff exports.
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- **Performance:** large SBOM datasets, concurrency, memory profiling, WebGL rendering.
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- **Security:** tenant isolation tests, RBAC, query cost abuse.
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- **Offline:** export/import verification, manifest hashing, CLI replay.
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## Definition of done
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- All phases delivered with telemetry, documentation, runbooks, and Offline Kit parity.
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- Console/CLI parity validated; a11y review complete.
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- ./TASKS.md and ../../TASKS.md updated; README/architecture/plan kept current with imposed rule references.
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