chore(grafana-metric-gateway): archive verified+synced change
Move to openspec/changes/archive/2026-07-09-grafana-metric-gateway/ (R100 renames preserved). 9 artifacts. Canonical openspec/specs/ prometheus-charting/ (30 reqs, first non-additive sync) remains. Carry-overs in archive-report: SC-106 stale component name (cosmetic); partial revert of prometheus-direct-charting per new network constraint.
This commit is contained in:
Developer
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# Apply Progress: Grafana Metric Gateway
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**Change:** `grafana-metric-gateway`
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**Phase:** apply-progress
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**Date:** 2026-07-09
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**Status:** complete — all 33 tasks done, all gates green, verified (see `verify-report.md`)
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## Slices delivered
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Two slices, each its own commit, each leaving `pytest` / `npm run build` / `npm run lint` / `ruff` green.
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### Slice 1 — Backend gateway transport (commit `df80c68`, amended)
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- `integrations/prometheus.py` — `PrometheusConfig` rewritten: dropped `base_url`; added `grafana_url: ServiceBaseUrl` + `datasource_uid: str = "prometheus"` + kept `timeout_seconds`; secret_fields now `grafana_api_key` (required, encrypted). Widget kinds chart/gauge/mean/metric unchanged (GM-101).
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- `widgets/prometheus_range.py` — added `normalize_grafana_frames(raw)` refactored from the recovered `65bae95` code; shares `_dedup_label` with the retained `normalize_prometheus_matrix` (DRY). `step_for_window` preserved (qBit dependency) (GM-104).
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- `widgets/sources.py` — renamed `PrometheusWidgetSource` → `MetricSource` (SERVICE_ADAPTERS key stays `"prometheus"`). All four kinds (`chart`/`gauge`/`mean`/`metric`) now route through one `_gateway_query` POSTing `{grafana_url}/api/ds/query` with `Authorization: Bearer {api_key}` + datasource `{uid, type:"prometheus"}`; window presets map to `from`/`intervalMs`/`maxDataPoints`. **Zero direct `/api/v1/query[_range]` calls remain** (GM-102/106/107/108/109).
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- `routers/monitoring.py` — `get_prometheus_status` runs `expr:"up"` through the gateway; maps failures (auth/unreachable/datasource) (GM-110).
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- `main.py` — startup old-config validation: detects persisted prometheus services with the old shape (`base_url`/no `grafana_url`) and logs a migration warning. Best-effort, no crash (GM-113).
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- `CHANGELOG.md` — `[Unreleased]` BREAKING entry: reconfigure prometheus services with `grafana_url`/`datasource_uid`/`grafana_api_key` (GM-114).
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- Tests rewritten: chart/gauge/mean adapter tests assert `POST /api/ds/query` + frames mock (not direct Prom). `test_prometheus_range.py` gains `normalize_grafana_frames` tests.
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### Slice 2 — Frontend widget renames (commit `7e91e7f`)
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- `git mv` (R100, history preserved): `PrometheusChartWidget.tsx` → `MetricChartWidget.tsx` (+ test); same for Gauge + Mean. Exports renamed; tests updated (GM-111).
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- `integrations/registry.ts` — `prometheus` binding's component refs updated to `MetricChartWidget`/`MetricGaugeWidget`/`MetricMeanWidget`. Kinds stay `chart`/`gauge`/`mean`/`metric`. Barrel `widgets/index.ts` updated (GM-112).
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- `PrometheusMetricWidget` deliberately KEPT under that name (design §3.1) — it's the instant-query numeric widget, adapted (design §3.4 Option A) to read the gateway's normalized `{result:[{label,points}]}` shape via last-point extraction.
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- Rendering unchanged: `LineSeriesChart`, gauge bands, mean windowing preserved verbatim. qBit widgets untouched.
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## Deviations from tasks.md
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- None functional. `PrometheusMetricWidget` was not renamed (design §3.1 explicitly kept it); its data-shape was adapted per design §3.4 Option A.
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## Final gate results
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| Gate | Result |
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|---|---|
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| `backend && PYTHONPATH=src python3 -m pytest -q` | **331 passed**, 2 warnings (pre-existing pythonjsonlogger DeprecationWarning) |
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| `backend && PYTHONPATH=src python3 -m ruff check src tests` | **All checks passed** |
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| `frontend && npm run build` | **exit 0** (pre-existing chunk-size warning) |
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| `frontend && npm run lint` | **0 errors**, 1 pre-existing warning (`WidgetConfigDialog.tsx`, untouched) |
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| `frontend && npx vitest run` | **151 passed** — renamed Metric* tests + qBit speed (LineSeriesChart non-regression) all green |
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## Verification
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See `verify-report.md` — adversarial fresh-context review: **15/16 PASS, 1 PARTIAL** (GM-115 coverage gap: no startup-validation or status-auth-failed enumerated tests; code paths correct). No blocking code findings. The partial is a coverage gap, not a defect; can be closed with two small tests if desired before archive.
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# Archive Report — `grafana-metric-gateway`
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> Phase: **archive** · Change: `grafana-metric-gateway` · Repo: `/home/user/manage`
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> Mode: file-backed (`artifactStore: openspec`). No source-code edits; only OpenSpec artifacts
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> were touched. **Not committed** — the parent/orchestrator owns the archive commit. No push, no `gh`.
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**Status: ARCHIVED.** All eight lifecycle phases are complete (proposal → spec → design → tasks →
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apply → verify → sync → **archive**). Every archive precondition is verified PASS (see §2). The
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canonical `openspec/specs/prometheus-charting/spec.md` (updated by `sdd-sync` with the project's
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first non-additive delta — 16 MODIFIED + 3 ADDED) remains in place as the durable end-state spec and
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is **not** moved (archive never moves canonical specs). The change folder was moved to
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`openspec/changes/archive/2026-07-09-grafana-metric-gateway/` via `git mv` to preserve history.
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---
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## 0. Archive disposition
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- **Disposition: `archived`.** The parent explicitly requested the `git mv` and owns the commit, so
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the move is executed here and left staged for the parent's explicit-path commit.
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- **Archive convention:** OpenSpec SDD archive contract for `openspec` mode — completed file-backed
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sync → write the in-folder archive report → move the change folder to
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`openspec/changes/archive/YYYY-MM-DD-{change}/`. No standalone manifest/index exists under
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`openspec/` (only `config.yaml`, `changes/`, `specs/`), so the folder move **is** the archive
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mechanism. No `rules.archive` override exists in `openspec/config.yaml`.
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- **Target archived path:** `openspec/changes/archive/2026-07-09-grafana-metric-gateway/`
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- **Archive date:** `2026-07-09` (ISO).
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- **Canonical spec left in place (not moved):** `openspec/specs/prometheus-charting/spec.md` —
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30 requirements (SC-101 … SC-130). Verified present and untouched after the move.
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- **`openspec/specs/web-ui/spec.md` and `openspec/specs/service-storage/spec.md` also left
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untouched** (the other canonical domains).
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- **Audit-trail integrity:** the change folder was moved as a whole, including the legacy flat
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`spec.md`, the per-domain delta `specs/prometheus-charting/spec.md`, `apply-progress.md`,
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`verify-report.md`, and `sync-report.md`, which travel with the record. Nothing was silently
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deleted or rewritten.
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## 1. Native `sdd-status` read & discrepancy statement
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The native `gentle-pi.sdd-status` engine supplied by the parent reports **non-actionable state for
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this archive** because it was resolved without a change context: `changeName: null`,
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`artifacts: all missing`, `applyState: blocked`, `dependencies.archive: blocked`,
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`blockedReasons: ["Change selection is ambiguous: grafana-metric-gateway, per-instance-hook-scoping,
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service-credential-tester."]`, `isNonAuthoritative: false`. This is a **parent-resolution artifact**:
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the engine auto-detected three active changes and could not pick one. The ambiguity does **not**
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reflect the state of `grafana-metric-gateway`, which this archive task was **explicitly assigned**.
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**Discrepancy with the parent's authoritative confirmed state — RESOLVED in favor of the parent.**
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The parent physically verified (and this executor re-confirmed directly against the filesystem in
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§2) that all 33 tasks are ticked, `apply-progress.md` exists and records the work, the verify report
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confirms functional completion, and the sync report confirms a SYNCED canonical domain. Per the
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archive contract's non-authoritative-store carve-out guidance and the parent's explicit instruction,
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the stale `archive: blocked` / "ambiguous" labels are **disregarded** and the archive **proceeds**.
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Direct filesystem re-validation (§2) is the source of truth for this report.
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## 2. Archive preconditions (validated directly against the filesystem)
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| Precondition | Evidence | Result |
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|---|---|---|
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| Verify report present | `verify-report.md` | ✓ verdict **PASS** (functionally complete) |
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| Verify clearly passing — no unresolved `FAIL`/`BLOCKED`/`CRITICAL` | the sole CRITICAL was a reconcilable task-hygiene gap (33 unchecked boxes + missing `apply-progress.md`), now **resolved**; GM-115 was PARTIAL on enumerated test-coverage only (non-critical), treated as closed per parent confirmation (15/16 PASS → 16/16) | ✓ |
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| Sync report present & successful | `sync-report.md` → **Status: SYNCED** | ✓ |
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| Canonical spec exists (sync target, updated) | `openspec/specs/prometheus-charting/spec.md` (30 requirements, SC-101 … SC-130) | ✓ |
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| Change-side domain delta exists | `specs/prometheus-charting/spec.md` (16 MODIFIED + 3 ADDED) | ✓ |
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| Delta op-class = non-additive (MODIFIED + ADDED; no REMOVED) | MODIFIED=16, ADDED=3, REMOVED=0, RENAMED=0 | ✓ |
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| Requirement-ID parity | canonical 30 = 27 retained + 3 ADDED; contiguous SC-101 … SC-130, no gaps/dupes | ✓ |
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| proposal / design / tasks artifacts present | all populated | ✓ |
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| **Final Task Completion Gate — zero unchecked `- [ ]`** | `grep -nE '^\s*- \[ \]' tasks.md` → **NONE**; `grep -cE '^\s*- \[x\]'` → **33** | ✓ |
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| `apply-progress.md` present & records the work | present; status "complete — all 33 tasks done", 2 slices documented | ✓ |
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| No active same-domain (`prometheus-charting`) collision | `sameDomainActiveChanges: []`, `collisions: []` (per sync-report §2); only this change carries a `prometheus-charting` delta | ✓ |
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**Stale-checkbox reconciliation note.** At verify time, all 33 implementation/verification checkboxes
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(Slice 1 §1.1–1.16, Slice 2 §2.1–2.11, Integration §3.1–3.6) were unchecked and `apply-progress.md`
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did not exist. That condition was reconciled **before** archive: the boxes are now all ticked and
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`apply-progress.md` was authored documenting the two landed slices (`df80c68`, `7e91e7f`) and the
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gate results. `apply-progress.md` plus the verify report prove every previously-unchecked task
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complete. No archive-time mechanical checkbox repair was needed — the gate now passes on the
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persisted `tasks.md` as-is. No partial-archive approval applies.
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## 3. Artifacts read (archive preflight)
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- `openspec/changes/grafana-metric-gateway/proposal.md`
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- `openspec/changes/grafana-metric-gateway/spec.md` (flat, authoritative planning artifact — 16 requirements GM-101 … GM-116)
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- `openspec/changes/grafana-metric-gateway/specs/prometheus-charting/spec.md` (change-side domain delta)
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- `openspec/changes/grafana-metric-gateway/design.md`
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- `openspec/changes/grafana-metric-gateway/tasks.md`
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- `openspec/changes/grafana-metric-gateway/apply-progress.md`
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- `openspec/changes/grafana-metric-gateway/verify-report.md`
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- `openspec/changes/grafana-metric-gateway/sync-report.md`
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- `openspec/specs/prometheus-charting/spec.md` (canonical, sync target — verified present and untouched)
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- `openspec/config.yaml` (rules: proposal/tasks; no `rules.archive` override)
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- House-style reference: `openspec/changes/archive/2026-07-08-prometheus-direct-charting/archive-report.md`
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> The legacy flat `spec.md` is **not** the only spec artifact: a per-domain delta
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> (`specs/prometheus-charting/spec.md`) and a canonical spec both exist, so the "legacy flat spec
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> as the *only* artifact" archive-block condition does not apply. The flat spec travels with the
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> archived folder as part of the audit trail.
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## 4. Domains synced & requirement delta
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| Domain | Change-side delta | Canonical | Action |
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|---|---|---|---|
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| `prometheus-charting` | `specs/prometheus-charting/spec.md` | `openspec/specs/prometheus-charting/spec.md` | **MODIFIED + ADDED** — 16 requirement blocks replaced in place by exact ID; 3 new requirements appended |
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- **MODIFIED (16)** — transport & naming requirements replaced in place by exact SC- ID: SC-101,
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SC-102, SC-103, SC-104, SC-105, SC-107, SC-109, SC-111, SC-112, SC-114, SC-115, SC-116, SC-121,
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SC-122, SC-125, SC-126. These switch the data source from direct Prom (`/api/v1/query[_range]`) to
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the Grafana `POST /api/ds/query` gateway, and re-scope the "no grafana references" requirements to
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"no grafana **service type**" (transport refs now allowed).
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- **ADDED (3)** — fresh canonical IDs continuing the SC- sequence: SC-128 (`get_prometheus_status`
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validates the full gateway path), SC-129 (startup logs old-shape prometheus config without
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crashing), SC-130 (Grafana is the sanctioned transport for the prometheus service).
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- **PRESERVED (11)** — unchanged in canonical, not in the delta: SC-106, SC-108, SC-110, SC-113,
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SC-117, SC-118, SC-119, SC-120, SC-123, SC-124, SC-127.
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- **REMOVED (0)** · **RENAMED (0)** — nothing destructive.
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> **This is the project's first non-additive canonical sync.** The MODIFIED-heavy delta was approved
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> in the parent dispatch (explicitly identified as "the project's first non-additive sync," with the
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> exact SC-xxx to modify enumerated). See §7.
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## 5. Final lifecycle status (all 8 phases done)
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| Phase | Status | Evidence |
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|---|---|---|
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| Proposal | ✅ done | `proposal.md` |
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| Spec | ✅ done | flat `spec.md` (16) + domain delta `specs/prometheus-charting/spec.md` (16 MODIFIED + 3 ADDED) |
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| Design | ✅ done | `design.md` |
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| Tasks | ✅ done | `tasks.md` — **33/33** checked, zero `- [ ]` |
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| Apply | ✅ done | 2 slices delivered (commits `df80c68` slice-1 backend, `7e91e7f` slice-2 frontend renames) |
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| Verify | ✅ PASS | `verify-report.md` — 15/16 PASS, GM-115 PARTIAL-on-coverage (closed per parent; effectively 16/16); gates green |
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| Sync | ✅ done | `sync-report.md` — SYNCED; canonical `prometheus-charting` domain MODIFIED + ADDED (now 30 requirements) |
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| Archive | ✅ done | this report + folder move performed |
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## 6. Gate results (per verify-report / apply-progress)
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| Gate | Command | Result |
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|---|---|---|
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| Backend tests | `cd backend && PYTHONPATH=src python3 -m pytest -q` | **PASS** — 331 passed (2 pre-existing warnings) |
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| Backend lint | `cd backend && PYTHONPATH=src python3 -m ruff check src tests` | **PASS** — All checks passed |
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| Frontend build | `cd frontend && npm run build` | **PASS** — exit 0 (pre-existing chunk-size advisory) |
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| Frontend lint | `cd frontend && npm run lint` | **PASS** — 0 errors (1 pre-existing unrelated warning) |
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| Frontend tests | `cd frontend && npx vitest run` | **PASS** — 151 passed / 44 files |
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## 7. Carry-over follow-ups & non-blocking notes (recorded for the record)
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1. **[COSMETIC — deferred fix]** **Preserved SC-106 still names `PrometheusChartWidget`.** SC-106 was
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explicitly listed as **PRESERVED** (not MODIFIED) in this change's "Canonical delta intent", so it
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was left verbatim in the canonical spec. It reads: *"…preserved in the rebranded
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`PrometheusChartWidget`."* This change **renames** that component to `MetricChartWidget` (GM-111),
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so the component name in that one canonical block is now stale. The *intent* — recharts renderer
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(line chart, multi-series, axes, tooltip, `mergeSeries`, color tokens) reused unchanged — remains
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true. This is purely a cosmetic carry-over; a future change may refresh the name if desired. Not
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blocking.
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2. **[INFO — first non-additive sync]** **The first non-additive canonical sync is complete.** 16
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MODIFIED + 3 ADDED + 0 REMOVED were applied to `openspec/specs/prometheus-charting/spec.md` by
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exact-ID block replacement. All 16 MODIFIED headers matched the canonical spec exactly (zero
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mismatches); the canonical spec now has 30 requirements (SC-101 … SC-130, contiguous). No
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destructive REMOVED requirements were used, so no destructive-removal guard was triggered. The
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MODIFIED-heavy delta was approved in the parent dispatch.
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3. **[INFO — partial revert of `prometheus-direct-charting`]** **This change partially reverts the
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archived `prometheus-direct-charting` (2026-07-08).** A new network constraint surfaced after
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`prometheus-direct-charting` shipped: the Prometheus instance is **not directly reachable** from
|
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the Manage backend (firewalled / different network / no auth proxy); Grafana is the only reachable
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surface. This change undoes that change's direct-Prom transport and Grafana **removal** (re-routing
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all metric queries through Grafana's `POST /api/ds/query` datasource proxy, restoring the
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`normalize_grafana_frames` normalizer recovered from git commit `65bae95`), while **preserving**
|
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its durable gauge/mean/`LineSeriesChart`/rendering work. It is a justified reversal based on new
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information, not a fourth flip of preference. The canonical `prometheus-charting` domain now
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reflects the gateway transport (Grafana = transport; Prometheus = logical source). The
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`prometheus` service type remains the sole metric surface — **no `grafana` service type is
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reintroduced**.
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4. **[VERIFY carry-over]** GM-115 was PARTIAL in verify on enumerated test-coverage only (no
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startup-validation test; no status 401/403 → `auth_failed` test). Functional code is correct and
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green; the parent confirmed this as closed (effectively 16/16). The new SC-128 (status gateway
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path) and SC-129 (startup validation) canonicalize this behavior; two small follow-up tests may be
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added in a future change.
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5. **[INFO]** `normalize_prometheus_matrix` is intentionally retained as dead production code
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(future-proof for a possible `direct_url` path); canonicalized by the MODIFIED SC-102.
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6. **[INFO]** Stale generated `.pi-map.md` artifacts still reference old `Prometheus*Widget` names;
|
||||
not deliverable source (ignored by tsc/vite/eslint) — regenerate via
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`project_map_patch`/`project_map_validate` at the orchestrator's convenience. **Not touched by
|
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this archive.**
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7. **[INFO]** The working tree carries unrelated dirty/untracked items **not owned by this archive**:
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a whitespace-only uncommitted modification to `frontend/src/pages/ServicesPage.tsx` (predating/
|
||||
orthogonal to this change) and untracked `.pi-tmp/*` scratch files (other-change strays). Per
|
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discipline these were **left untouched**.
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## 8. Residual risks & destructive-merge statement
|
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- **Destructive sync / merge:** **none destructive.** Zero REMOVED requirements; the 16 MODIFIED
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blocks replaced transport/naming requirements in place by exact ID with the durable behavior
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preserved. The MODIFIED-heavy non-additive delta was approved in the parent dispatch (explicit
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"first non-additive sync" identification + enumerated SC-xxx). No destructive-removal guard was
|
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triggered.
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- **Backend / data-contract impact:** none new beyond the documented operator migration. All
|
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Prometheus metric queries are gated behind Grafana's `/api/ds/query` with **zero** direct-Prom HTTP
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||||
residue in `widgets/sources.py`. Old-shape `prometheus` services (with `base_url`) warn on startup
|
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and return `grafana_url is required` errors until reconfigured — the intended degraded state, with
|
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the required operator action documented in the CHANGELOG. The `{series}` / `{value}` widget data
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shapes are preserved. Archive touched only OpenSpec docs + the folder move.
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||||
- **No critical verification issues** remain (CRITICAL issues are non-overridable; the one verify
|
||||
CRITICAL was the reconcilable checkbox/apply-progress gap, now resolved).
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||||
- **No browser/visual smoke** was performed (out of scope); recharts rendering is structurally
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||||
tested only.
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||||
- **Memory observation IDs:** none — `artifactStore: openspec`; traceability lives in the filesystem
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archive + canonical spec.
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## 9. Move performed
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```
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git mv openspec/changes/grafana-metric-gateway openspec/changes/archive/2026-07-09-grafana-metric-gateway
|
||||
```
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||||
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||||
- **All 9 artifacts confirmed present at the archived path:** `proposal.md`, `spec.md`,
|
||||
`specs/prometheus-charting/spec.md` (delta), `design.md`, `tasks.md`, `apply-progress.md`,
|
||||
`verify-report.md`, `sync-report.md`, `archive-report.md` (this file).
|
||||
- **Canonical `openspec/specs/prometheus-charting/spec.md` remains in place** (verified untouched
|
||||
after the move). `openspec/specs/web-ui/spec.md` and `openspec/specs/service-storage/spec.md` also
|
||||
untouched.
|
||||
- Renames were left **staged** (R100 detection preserved) for the parent's explicit-path commit.
|
||||
`git restore --staged` was **not** run after the `git mv` (a prior archive agent did so and
|
||||
discarded rename detection).
|
||||
|
||||
---
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||||
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### Appendix — Files written/moved by this archive (OpenSpec only; no source code)
|
||||
|
||||
- **Written:** `openspec/changes/grafana-metric-gateway/archive-report.md` (this file) — at the
|
||||
active path before the move; travels with the move into the archive.
|
||||
- **Moved (via `git mv`):** the entire
|
||||
`openspec/changes/grafana-metric-gateway/` directory →
|
||||
`openspec/changes/archive/2026-07-09-grafana-metric-gateway/`.
|
||||
- **Left in place (durable canonical):** `openspec/specs/prometheus-charting/spec.md`.
|
||||
- **Not committed / not pushed** — the parent owns the commit with explicit paths.
|
||||
@@ -0,0 +1,506 @@
|
||||
# SDD Design: Grafana Metric Gateway
|
||||
|
||||
**Change:** `grafana-metric-gateway`
|
||||
**Phase:** design
|
||||
**Date:** 2026-07-09
|
||||
|
||||
## 0. Source findings (read before anything else)
|
||||
|
||||
The proposal and spec were written against a mental model. Reading actual source surfaced deviations the design must account for. Trust source, not assumptions.
|
||||
|
||||
| Spec/proposal claim | Actual source reality | Design impact |
|
||||
|---|---|---|
|
||||
| Spec assumption #3: "`normalize_prometheus_matrix` retained because `QbittorrentSampleStore.window()` returns data in a matrix-adjacent shape consumed by `QbittorrentSpeedWidget`" | **WRONG.** `QbittorrentWidgetSource.fetch` (sources.py:395–425) builds `{series}` **inline** — `{"label": "download", "points": [{"t": s["ts"] * 1000, "v": s["dl_speed"]}, ...]}`. It NEVER calls `normalize_prometheus_matrix`. After this change removes all direct-Prom paths, `normalize_prometheus_matrix` becomes **dead code**. | Design recommends KEEPING `normalize_prometheus_matrix` (harmless, future-proof for `direct_url` future-phase) but flagging it as currently-unused. Do NOT delete — removing a tested helper adds risk for zero gain. |
|
||||
| Proposal: "rename `PrometheusWidgetSource` → `MetricSource`" | Only 3 widgets are renamed (Chart/Gauge/Mean). The 4th kind, `metric`, uses `PrometheusMetricWidget` — which is NOT renamed per proposal §3 ("`MetricChartWidget` / `MetricGaugeWidget` / `MetricMeanWidget`"). | `PrometheusMetricWidget` stays as-is. The internal `MetricSource` class handles all 4 kinds; the frontend component name for `metric` is unchanged. |
|
||||
| monitoring.py helpers: `_base_url`, `_auth_headers`, `_timeout` | These read `service.config.get("base_url")` and `service.secrets.get("api_key")` — both will change (config: `grafana_url`; secret: `grafana_api_key`). | `get_prometheus_status` is rewritten to use gateway fields directly, not the shared `_base_url`/`_auth_headers` helpers (those still serve other service types). A local helper in the status function reads `grafana_url`/`grafana_api_key`/`datasource_uid`. |
|
||||
| Proposal §5.1: "secret schema: replace any existing secret with `grafana_api_key`" | Current `prometheus` definition has `SecretField(key="api_key", label="API key", helper="Optional bearer token")` — it's optional, not required. | Replaced by `SecretField(key="grafana_api_key", label="Grafana API key", required=True, helper="Service account token or API key for the Grafana gateway")`. Old `api_key` is inert in persisted rows (dropped on next save per spec assumption #4). |
|
||||
| `PrometheusMetricWidget.tsx` has complex formatting logic (formatPrometheusValue) | ~63 lines, parses `{resultType, result}` vector/matrix shapes. It calls the backend `metric` kind which currently returns `{"result": payload.get("data", {})}` from `_instant_query`. | After this change, `_instant_query` becomes `_gateway_query` (POST `/api/ds/query`), and the response is normalized via `normalize_grafana_frames` then returned in a compatible shape. The frontend component stays unchanged; only the transport + response normalization changes. See §2.4 for the exact shape mapping. |
|
||||
|
||||
No proposal/spec scope change is required — the *intent* (route through Grafana) still holds. The findings above refine implementation details.
|
||||
|
||||
---
|
||||
|
||||
## 1. Architecture overview
|
||||
|
||||
This change cuts the direct-Prometheus HTTP path and routes all metric queries through Grafana's `/api/ds/query` datasource proxy. Grafana becomes the transport; Prometheus remains the logical service type.
|
||||
|
||||
```
|
||||
BEFORE (prometheus-direct-charting) AFTER (grafana-metric-gateway)
|
||||
───── ─────
|
||||
WidgetData fetch WidgetData fetch
|
||||
└► PrometheusWidgetSource.fetch └► MetricSource.fetch
|
||||
└► GET prom:9090/api/v1/query_range └► POST grafana:3000/api/ds/query
|
||||
└► GET prom:9090/api/v1/query {queries:[{datasource:{uid, type},
|
||||
└► normalize_prometheus_matrix() expr, intervalMs, maxDataPoints}],
|
||||
from, to}
|
||||
└► normalize_grafana_frames()
|
||||
→ {series} / {value} / {result}
|
||||
```
|
||||
|
||||
Config changes from `{base_url, timeout_seconds}` + optional `api_key` to `{grafana_url, datasource_uid, timeout_seconds}` + required `grafana_api_key`. No frontend rendering change.
|
||||
|
||||
---
|
||||
|
||||
## 2. Backend design
|
||||
|
||||
### 2.1 PrometheusConfig model (GM-101)
|
||||
|
||||
**File:** `backend/src/media_library_viewer_api/integrations/prometheus.py`
|
||||
|
||||
```python
|
||||
class PrometheusConfig(ServiceConfigBase):
|
||||
"""Non-secret Prometheus-via-Grafana gateway config."""
|
||||
grafana_url: ServiceBaseUrl
|
||||
datasource_uid: str = "prometheus"
|
||||
timeout_seconds: int = 10
|
||||
```
|
||||
|
||||
Secret fields:
|
||||
|
||||
```python
|
||||
secret_fields=[
|
||||
SecretField(
|
||||
key="grafana_api_key",
|
||||
label="Grafana API key",
|
||||
required=True,
|
||||
helper="Service account token or API key for the Grafana gateway",
|
||||
),
|
||||
],
|
||||
```
|
||||
|
||||
Widget config models (`PrometheusMetricWidgetConfig`, `PrometheusChartWidgetConfig`, `PrometheusGaugeWidgetConfig`, `PrometheusMeanWidgetConfig`) are UNCHANGED — they hold `promql`, `window`, `warn_at`, etc., which are transport-agnostic.
|
||||
|
||||
**Note on naming:** the widget config model classes keep `Prometheus*` names (they are Pydantic models internal to the definition module, not user-facing components). Only the frontend components rename to `Metric*`. This is intentional: the service IS Prometheus (the PromQL dialect, the datasource); Grafana is just how Manage reaches it.
|
||||
|
||||
### 2.2 normalize_grafana_frames helper (GM-104)
|
||||
|
||||
**File:** `backend/src/media_library_viewer_api/widgets/prometheus_range.py` (added alongside existing helpers)
|
||||
|
||||
Recovered from git commit `65bae95` (`GrafanaWidgetSource._fetch_chart`), refactored into a standalone function that shares the label-dedup rule with `normalize_prometheus_matrix`:
|
||||
|
||||
```python
|
||||
def normalize_grafana_frames(raw: dict[str, Any]) -> list[dict[str, Any]]:
|
||||
"""Turn a Grafana /api/ds/query response into the {label, points} series shape.
|
||||
|
||||
Parses results.<refId>.frames[] where each frame has:
|
||||
- data.values: [[timestamps...], [values...]]
|
||||
- schema.fields: [{name, labels?, config?: {displayName?}}, ...]
|
||||
|
||||
Label rule (same as normalize_prometheus_matrix, shared via _dedup_label):
|
||||
1. Prefer config.displayName (explicitly set in Grafana).
|
||||
2. Else use Prometheus metric labels (sorted k=v, excluding __-prefixed).
|
||||
3. Else fall back to the field name, or "value".
|
||||
4. Dedup collisions with " (n)" suffix.
|
||||
"""
|
||||
```
|
||||
|
||||
**Shared dedup extraction:** The label-dedup logic (`seen` dict + `(n)` suffix) currently exists inline in both `normalize_prometheus_matrix` and the recovered `_fetch_chart`. The design extracts it into a private `_dedup_label(label: str, seen: dict[str, int]) -> str` helper used by both normalizers. This prevents duplication (GM-104 "dedup logic is not copy-pasted").
|
||||
|
||||
```python
|
||||
def _dedup_label(label: str, seen: dict[str, int]) -> str:
|
||||
"""Apply ' (n)' suffix on collision. Mutates and reads from seen dict."""
|
||||
if label in seen:
|
||||
seen[label] += 1
|
||||
return f"{label} ({seen[label]})"
|
||||
seen[label] = 0
|
||||
return label
|
||||
```
|
||||
|
||||
Both `normalize_prometheus_matrix` and `normalize_grafana_frames` call `_dedup_label` instead of inlining the logic.
|
||||
|
||||
### 2.3 MetricSource class — gateway query transport (GM-102)
|
||||
|
||||
**File:** `backend/src/media_library_viewer_api/widgets/sources.py`
|
||||
|
||||
`PrometheusWidgetSource` is renamed to `MetricSource`. The `SERVICE_ADAPTERS` dict key stays `"prometheus"` (GM-112 — kind strings unchanged).
|
||||
|
||||
The core new method is `_gateway_query`, which replaces both `_range_query` and `_instant_query`:
|
||||
|
||||
```python
|
||||
class MetricSource:
|
||||
"""Run PromQL queries through a Grafana gateway (/api/ds/query)."""
|
||||
|
||||
async def fetch(self, service, widget_kind, config):
|
||||
# dispatch chart/gauge/mean/metric → _fetch_chart/_fetch_gauge/_fetch_mean/_fetch_metric
|
||||
# each calls _gateway_query with appropriate window/maxDataPoints
|
||||
|
||||
async def _gateway_query(
|
||||
self, grafana_url: str, api_key: str, datasource_uid: str,
|
||||
timeout: int, promql: str,
|
||||
window_seconds: int | None = None,
|
||||
max_data_points: int = 200,
|
||||
) -> dict[str, Any]:
|
||||
"""POST {grafana_url}/api/ds/query; return normalized result.
|
||||
|
||||
- window_seconds=None → instant query (from=now-1m, to=now, maxDataPoints=1)
|
||||
- window_seconds=<N> → range query (from=now-Ns, to=now, step derived)
|
||||
"""
|
||||
```
|
||||
|
||||
**Request body construction:**
|
||||
|
||||
```python
|
||||
step = step_for_window(window_seconds) if window_seconds else 15
|
||||
interval_ms = step * 1000
|
||||
|
||||
body = {
|
||||
"queries": [{
|
||||
"datasource": {"uid": datasource_uid, "type": "prometheus"},
|
||||
"expr": promql,
|
||||
"format": "time_series",
|
||||
"intervalMs": interval_ms,
|
||||
"maxDataPoints": 1 if window_seconds is None else max_data_points,
|
||||
"refId": "A",
|
||||
}],
|
||||
"from": f"now-{window_seconds or 60}s" if window_seconds else "now-1m",
|
||||
"to": "now",
|
||||
}
|
||||
```
|
||||
|
||||
Headers: `{"Authorization": f"Bearer {api_key}", "Content-Type": "application/json"}`.
|
||||
|
||||
HTTP: `requests.post(f"{grafana_url}/api/ds/query", json=body, headers=headers, timeout=timeout)` wrapped in `asyncio.wait_for(asyncio.to_thread(...), timeout=timeout)`.
|
||||
|
||||
Error handling (GM-103): catch `asyncio.TimeoutError` → `{"error": "Grafana query timed out"}`; catch `requests.RequestException` → `{"error": f"Grafana query failed: {exc}"}`. The outer `fetch` method's try/except catches everything else → `{"error": ...}`. Never raises.
|
||||
|
||||
**Per-kind mapping (§2.3.1–§2.3.4):**
|
||||
|
||||
#### 2.3.1 _fetch_chart (GM-106)
|
||||
|
||||
```python
|
||||
async def _fetch_chart(self, grafana_url, api_key, datasource_uid, timeout, config):
|
||||
promql = config.get("promql")
|
||||
if not promql:
|
||||
return {"error": "promql is required"}
|
||||
window = WINDOW_PRESETS.get(config.get("window", "1h"), WINDOW_PRESETS["1h"])
|
||||
raw = await self._gateway_query(grafana_url, api_key, datasource_uid, timeout, promql, window_seconds=window)
|
||||
if "error" in raw:
|
||||
return raw
|
||||
return {"series": normalize_grafana_frames(raw)}
|
||||
```
|
||||
|
||||
The `_gateway_query` return value on success is the raw Grafana JSON response dict. `normalize_grafana_frames` parses `results.A.frames[]` into `[{label, points}]`.
|
||||
|
||||
#### 2.3.2 _fetch_gauge (GM-107)
|
||||
|
||||
Instant query via `window_seconds=None` (minimal window, `maxDataPoints=1`). The last point of the single frame is the scalar:
|
||||
|
||||
```python
|
||||
async def _fetch_gauge(self, grafana_url, api_key, datasource_uid, timeout, config):
|
||||
raw = await self._gateway_query(grafana_url, api_key, datasource_uid, timeout,
|
||||
config.get("promql") or "", window_seconds=None)
|
||||
if "error" in raw:
|
||||
return raw
|
||||
series = normalize_grafana_frames(raw)
|
||||
if len(series) != 1:
|
||||
return {"error": "Gauge requires a single-series query; refine your PromQL"}
|
||||
points = series[0]["points"]
|
||||
if not points:
|
||||
return {"error": "Gauge query returned no scalar value"}
|
||||
value = points[-1]["v"] # latest point
|
||||
if value is None:
|
||||
return {"error": "Gauge query returned no scalar value"}
|
||||
return {
|
||||
"value": value,
|
||||
"warn_at": config.get("warn_at"),
|
||||
"crit_at": config.get("crit_at"),
|
||||
"min": config.get("min"),
|
||||
"max": config.get("max"),
|
||||
"unit": config.get("unit"),
|
||||
}
|
||||
```
|
||||
|
||||
#### 2.3.3 _fetch_mean (GM-108)
|
||||
|
||||
Range query over the window preset; average all non-null points of the single series:
|
||||
|
||||
```python
|
||||
async def _fetch_mean(self, grafana_url, api_key, datasource_uid, timeout, config):
|
||||
promql = config.get("promql")
|
||||
if not promql:
|
||||
return {"error": "promql is required"}
|
||||
window = WINDOW_PRESETS.get(config.get("window", "1h"), WINDOW_PRESETS["1h"])
|
||||
raw = await self._gateway_query(grafana_url, api_key, datasource_uid, timeout, promql, window_seconds=window)
|
||||
if "error" in raw:
|
||||
return raw
|
||||
series = normalize_grafana_frames(raw)
|
||||
if len(series) != 1:
|
||||
return {"error": "Mean requires a single-series query; refine your PromQL"}
|
||||
nums = [p["v"] for p in series[0]["points"] if p["v"] is not None]
|
||||
if not nums:
|
||||
return {"error": "Mean query returned no numeric samples in the window"}
|
||||
return {"value": sum(nums) / len(nums), "unit": config.get("unit")}
|
||||
```
|
||||
|
||||
#### 2.3.4 _fetch_metric (GM-109)
|
||||
|
||||
Instant query; return result in a shape compatible with `PrometheusMetricWidget`'s expectations. The frontend component currently reads `data.result.result` (a vector/matrix). The gateway response normalized via `normalize_grafana_frames` produces `[{label, points}]` — the frontend component must handle this shape. **Design decision:** return the normalized series as-is in `{"result": series}` so the frontend component adapts to read `data.result` as an array of `{label, points}` (matching the chart shape). This is a small frontend adaptation in the component (see §3.3). If the frontend change proves too large for Slice 2, the fallback is to return the raw Grafana response structure and let the frontend parse it — but the normalized shape is preferred for consistency.
|
||||
|
||||
### 2.4 get_prometheus_status via gateway (GM-110)
|
||||
|
||||
**File:** `backend/src/media_library_viewer_api/routers/monitoring.py`
|
||||
|
||||
The current `get_prometheus_status` does two direct-Prom HTTP calls (`/-/healthy` + `/api/v1/status/buildinfo`). These are replaced by a single gateway query:
|
||||
|
||||
```python
|
||||
def get_prometheus_status(service_id, store):
|
||||
service = resolve_service_record(store, "prometheus", service_id)
|
||||
if service is None:
|
||||
return _status_response(None, error="no_service_configured")
|
||||
|
||||
grafana_url = str(service.config.get("grafana_url") or "").rstrip("/")
|
||||
api_key = str(service.secrets.get("grafana_api_key") or "")
|
||||
datasource_uid = str(service.config.get("datasource_uid") or "prometheus")
|
||||
timeout = int(service.config.get("timeout_seconds") or 10)
|
||||
|
||||
if not grafana_url or not api_key:
|
||||
return _status_response(service, error="gateway_not_configured")
|
||||
|
||||
try:
|
||||
body = { # trivial 'up' query
|
||||
"queries": [{"datasource": {"uid": datasource_uid, "type": "prometheus"},
|
||||
"expr": "up", "format": "time_series",
|
||||
"intervalMs": 15000, "maxDataPoints": 1, "refId": "A"}],
|
||||
"from": "now-1m", "to": "now",
|
||||
}
|
||||
resp = requests.post(f"{grafana_url}/api/ds/query", json=body,
|
||||
headers={"Authorization": f"Bearer {api_key}",
|
||||
"Content-Type": "application/json"},
|
||||
timeout=timeout)
|
||||
resp.raise_for_status()
|
||||
except requests.HTTPError as exc:
|
||||
status_code = exc.response.status_code if exc.response else 0
|
||||
if status_code in (401, 403):
|
||||
return _status_response(service, error="auth_failed")
|
||||
return _status_response(service, error="gateway_error")
|
||||
except requests.RequestException:
|
||||
return _status_response(service, error="prometheus_unreachable")
|
||||
|
||||
return _status_response(service, version="ok")
|
||||
```
|
||||
|
||||
Error mapping: 401/403 → `"auth_failed"`; connection error → `"prometheus_unreachable"`; other non-2xx → `"gateway_error"`. Success → `version="ok"` (spec assumption #2: Grafana `/api/ds/query` doesn't carry Prom build-info).
|
||||
|
||||
The shared `_base_url`/`_auth_headers`/`_timeout` helpers in monitoring.py are NOT modified — they still serve `get_alertmanager_status` which reads `base_url`/`api_key` from alertmanager services. The Prom status function reads gateway fields directly.
|
||||
|
||||
### 2.5 Startup validation for old config shape (GM-113)
|
||||
|
||||
**File:** `backend/src/media_library_viewer_api/main.py` (lifespan, or a small validation helper)
|
||||
|
||||
The existing `validate_auth_settings(settings)` runs on startup. A complementary check iterates persisted `prometheus` service instances and detects old-shape config:
|
||||
|
||||
```python
|
||||
def _validate_prometheus_gateway_config(store: SettingsStore) -> None:
|
||||
"""Warn (not crash) about old-shape prometheus services that need migration."""
|
||||
for service in store.list_services("prometheus"):
|
||||
config = service.get("config") or {}
|
||||
if "base_url" in config and "grafana_url" not in config:
|
||||
logger.warning(
|
||||
"Prometheus service '%s' (id=%s) uses the old 'base_url' config shape. "
|
||||
"Reconfigure with grafana_url + grafana_api_key (see CHANGELOG).",
|
||||
service.get("name"), service.get("id"),
|
||||
)
|
||||
```
|
||||
|
||||
Called from `lifespan` after `ensure_defaults()`. This logs a warning but does NOT crash, disable, or delete the service (GM-113: "MUST NOT crash startup"). The service's widget fetches will fail at runtime with a gateway error (since `grafana_url` is absent) — that's the expected degraded state until the operator reconfigures.
|
||||
|
||||
### 2.6 Imports cleanup in sources.py
|
||||
|
||||
The `PrometheusWidgetSource` → `MetricSource` rename changes the class referenced in `SERVICE_ADAPTERS`:
|
||||
|
||||
```python
|
||||
SERVICE_ADAPTERS: dict[str, WidgetSource] = {
|
||||
"prometheus": MetricSource(), # was PrometheusWidgetSource()
|
||||
...
|
||||
}
|
||||
```
|
||||
|
||||
The import block gains `normalize_grafana_frames`:
|
||||
|
||||
```python
|
||||
from media_library_viewer_api.widgets.prometheus_range import (
|
||||
WINDOW_PRESETS,
|
||||
normalize_grafana_frames,
|
||||
normalize_prometheus_matrix, # kept (currently dead code after this change; future-proof)
|
||||
step_for_window,
|
||||
)
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 3. Frontend design
|
||||
|
||||
### 3.1 Widget rename via git mv (GM-111)
|
||||
|
||||
| Old path | New path |
|
||||
|---|---|
|
||||
| `frontend/src/widgets/PrometheusChartWidget.tsx` | `frontend/src/widgets/MetricChartWidget.tsx` |
|
||||
| `frontend/src/widgets/PrometheusGaugeWidget.tsx` | `frontend/src/widgets/MetricGaugeWidget.tsx` |
|
||||
| `frontend/src/widgets/PrometheusMeanWidget.tsx` | `frontend/src/widgets/MetricMeanWidget.tsx` |
|
||||
| `frontend/src/widgets/__tests__/PrometheusChartWidget.test.tsx` | `frontend/src/widgets/__tests__/MetricChartWidget.test.tsx` |
|
||||
| `frontend/src/widgets/__tests__/PrometheusGaugeWidget.test.tsx` | `frontend/src/widgets/__tests__/MetricGaugeWidget.test.tsx` |
|
||||
| `frontend/src/widgets/__tests__/PrometheusMeanWidget.test.tsx` | `frontend/src/widgets/__tests__/MetricMeanWidget.test.tsx` |
|
||||
|
||||
**NOT renamed:** `PrometheusMetricWidget.tsx` (the `metric` kind widget). The proposal only names Chart/Gauge/Mean for the `Metric*` rename. `PrometheusMetricWidget` keeps its name.
|
||||
|
||||
**Per-file changes inside the renamed files:**
|
||||
|
||||
- Exported function name: `PrometheusChartWidget` → `MetricChartWidget` (and Gauge/Mean equivalents).
|
||||
- All rendering code (recharts, LineSeriesChart, gauge bands, formatValue, formatMean) is **preserved unchanged**.
|
||||
- The test files update their import + the component reference.
|
||||
|
||||
### 3.2 Registry binding update (GM-112)
|
||||
|
||||
**File:** `frontend/src/integrations/registry.ts`
|
||||
|
||||
Imports change:
|
||||
|
||||
```typescript
|
||||
import { MetricChartWidget } from "../widgets/MetricChartWidget";
|
||||
import { MetricGaugeWidget } from "../widgets/MetricGaugeWidget";
|
||||
import { MetricMeanWidget } from "../widgets/MetricMeanWidget";
|
||||
// PrometheusMetricWidget import stays
|
||||
```
|
||||
|
||||
Widget KIND strings stay `"chart"`, `"gauge"`, `"mean"`, `"metric"` (persisted in widget instance rows — must not change).
|
||||
|
||||
Component refs change:
|
||||
|
||||
```typescript
|
||||
component: MetricChartWidget, // was PrometheusChartWidget (chart kind)
|
||||
component: MetricGaugeWidget, // was PrometheusGaugeWidget (gauge kind)
|
||||
component: MetricMeanWidget, // was PrometheusMeanWidget (mean kind)
|
||||
// metric kind: PrometheusMetricWidget (unchanged)
|
||||
```
|
||||
|
||||
### 3.3 Barrel export update
|
||||
|
||||
**File:** `frontend/src/widgets/index.ts`
|
||||
|
||||
```typescript
|
||||
export { MetricChartWidget } from "./MetricChartWidget";
|
||||
export { MetricGaugeWidget } from "./MetricGaugeWidget";
|
||||
export { MetricMeanWidget } from "./MetricMeanWidget";
|
||||
// PrometheusMetricWidget export stays
|
||||
```
|
||||
|
||||
### 3.4 PrometheusMetricWidget adaptation (if needed)
|
||||
|
||||
`PrometheusMetricWidget.tsx` currently reads `data.result` as a Prometheus `{resultType, result: [{metric, value}]}` shape. After the transport change, the backend returns the normalized Grafana series for the `metric` kind too. Two options:
|
||||
|
||||
- **Option A (preferred):** Backend `_fetch_metric` returns `{"result": normalize_grafana_frames(raw)}` (array of `{label, points}`), and the frontend component is adapted to render from this shape. Small change — the component's rendering logic switches from parsing Prom vector to rendering the last point of each series.
|
||||
- **Option B (fallback):** Backend `_fetch_metric` returns the raw Grafana response in a Prom-compatible shape, minimizing frontend change.
|
||||
|
||||
Design recommends Option A for shape consistency. The component's formatting logic (`formatPrometheusValue`) is reused for the scalar value extraction.
|
||||
|
||||
---
|
||||
|
||||
## 4. Test changes
|
||||
|
||||
### 4.1 Backend tests
|
||||
|
||||
**File:** `backend/tests/test_widgets.py`
|
||||
|
||||
- Existing chart/gauge/mean adapter tests assert `GET /api/v1/query_range` — rewritten to assert `POST /api/ds/query`. The mock response changes from Prom matrix shape to Grafana frames shape. Assertions on the `{series}` / `{value}` output shape stay the same.
|
||||
- The `ServiceRecord` mock in tests changes from `{config: {base_url, timeout_seconds}, secrets: {api_key}}` to `{config: {grafana_url, datasource_uid, timeout_seconds}, secrets: {grafana_api_key}}`.
|
||||
|
||||
**File:** `backend/tests/test_prometheus_range.py`
|
||||
|
||||
- New tests for `normalize_grafana_frames`: label fallback chain (displayName → labels → "value"), dedup, NaN handling, empty frames.
|
||||
- Existing `normalize_prometheus_matrix` tests stay (dead code but still tested).
|
||||
|
||||
**File:** `backend/tests/test_api.py`
|
||||
|
||||
- `get_prometheus_status` test: assert `POST /api/ds/query` instead of `GET /-/healthy` + `GET /api/v1/status/buildinfo`.
|
||||
|
||||
**File:** `backend/tests/test_services.py`
|
||||
|
||||
- Prometheus service config test: assert `grafana_url` field (not `base_url`); assert `grafana_api_key` secret field.
|
||||
|
||||
### 4.2 Frontend tests
|
||||
|
||||
- Renamed test files follow the `git mv` and assert the new component names. Test cases (loading/error/rendered) are preserved.
|
||||
- If PrometheusMetricWidget is adapted (§3.4 Option A), its test updates the mock data shape.
|
||||
|
||||
---
|
||||
|
||||
## 5. Slice plan
|
||||
|
||||
### Slice 1 — Backend: config + adapter + frames normalizer + status + tests (~300–380 lines)
|
||||
|
||||
- `integrations/prometheus.py`: PrometheusConfig change (drop `base_url`, add `grafana_url`/`datasource_uid`; secret `grafana_api_key`).
|
||||
- `widgets/prometheus_range.py`: add `normalize_grafana_frames` + `_dedup_label` shared helper.
|
||||
- `widgets/sources.py`: rename `PrometheusWidgetSource` → `MetricSource`; add `_gateway_query`; rewrite `_fetch_chart`/`_fetch_gauge`/`_fetch_mean`/`_fetch_metric`; update `SERVICE_ADAPTERS`.
|
||||
- `routers/monitoring.py`: rewrite `get_prometheus_status` for gateway path.
|
||||
- `main.py`: add `_validate_prometheus_gateway_config` startup check.
|
||||
- `CHANGELOG.md`: migration note.
|
||||
- Tests: update all affected backend tests (test_widgets, test_prometheus_range, test_api, test_services).
|
||||
|
||||
### Slice 2 — Frontend: widget renames + registry + barrel (~200–280 lines)
|
||||
|
||||
- `git mv` 3 component files + 3 test files (6 renames).
|
||||
- Rename exported functions inside each file.
|
||||
- `registry.ts`: update imports + component refs.
|
||||
- `widgets/index.ts`: update barrel exports.
|
||||
- If needed: adapt `PrometheusMetricWidget.tsx` for normalized series shape.
|
||||
- Tests: verify renamed tests pass.
|
||||
|
||||
Each slice ≤400 lines. S1 → S2 order. S1 is independently shippable (backend works, frontend just has stale names until S2).
|
||||
|
||||
---
|
||||
|
||||
## 6. Key design decisions summary
|
||||
|
||||
| # | Decision | Rationale |
|
||||
|---|---|---|
|
||||
| 1 | `normalize_grafana_frames` recovered from `65bae95`, not rewritten | Known-good code; avoids re-deriving the Grafana frames schema |
|
||||
| 2 | Shared `_dedup_label` extracted from both normalizers | GM-104 "dedup not copy-pasted"; DRY |
|
||||
| 3 | `_gateway_query` is the single transport method (replaces `_range_query` + `_instant_query`) | One POST path for all kinds; `window_seconds=None` signals instant |
|
||||
| 4 | Instant-query mapping: `from=now-1m, to=now, maxDataPoints=1` (spec assumption #1) | Grafana `/api/ds/query` has no native instant endpoint; minimal-window is pragmatic |
|
||||
| 5 | `normalize_prometheus_matrix` kept (dead code after this change) | Harmless; future-proof for `direct_url` future-phase; removing tested code adds risk |
|
||||
| 6 | `PrometheusMetricWidget` NOT renamed (only Chart/Gauge/Mean → Metric*) | Proposal only names 3 widgets; `metric` kind stays `PrometheusMetricWidget` |
|
||||
| 7 | Status check returns `version="ok"` (spec assumption #2) | Grafana `/api/ds/query` lacks Prom build-info; richer version is future-phase |
|
||||
| 8 | Startup validation logs warning, doesn't crash (GM-113) | Operator needs to migrate at their pace; degraded widgets show gateway error |
|
||||
|
||||
---
|
||||
|
||||
## 7. Risk assessment
|
||||
|
||||
| Risk | Likelihood | Impact | Mitigation |
|
||||
|---|---|---|---|
|
||||
| Grafana `/api/ds/query` response shape varies across versions | Medium | Medium | Recovered normalizer handles shapes defensively; add a test fixture from current Grafana |
|
||||
| Old-shape services cause confusing widget errors | Medium | Low | Startup warning + gateway error message names the service |
|
||||
| `normalize_prometheus_matrix` dead code confuses future maintainers | Low | Low | Inline comment explains why it's kept; it's in a tested helper module |
|
||||
| PrometheusMetricWidget shape mismatch after transport change | Medium | Medium | §3.4 Option A adaptation; if too large, Option B fallback (raw response) |
|
||||
| Canonical sync MODIFIED delta mismatches SC- IDs | Low | Medium | Spec §"Canonical delta intent" maps every GM→SC; sync phase references it |
|
||||
|
||||
---
|
||||
|
||||
## 8. File change inventory
|
||||
|
||||
### Backend (Slice 1)
|
||||
|
||||
| File | Change |
|
||||
|---|---|
|
||||
| `integrations/prometheus.py` | PrometheusConfig: drop `base_url`, add `grafana_url`/`datasource_uid`; secret `grafana_api_key` |
|
||||
| `widgets/prometheus_range.py` | Add `normalize_grafana_frames` + `_dedup_label` shared helper |
|
||||
| `widgets/sources.py` | Rename class → `MetricSource`; add `_gateway_query`; rewrite 4 `_fetch_*` methods |
|
||||
| `routers/monitoring.py` | Rewrite `get_prometheus_status` for gateway path |
|
||||
| `main.py` | Add `_validate_prometheus_gateway_config` startup check |
|
||||
| `CHANGELOG.md` | BREAKING migration note |
|
||||
| `tests/test_widgets.py` | Update chart/gauge/mean tests for gateway POST + frames mock |
|
||||
| `tests/test_prometheus_range.py` | Add `normalize_grafana_frames` tests |
|
||||
| `tests/test_api.py` | Update `get_prometheus_status` test |
|
||||
| `tests/test_services.py` | Update prometheus config schema test |
|
||||
|
||||
### Frontend (Slice 2)
|
||||
|
||||
| File | Change |
|
||||
|---|---|
|
||||
| `widgets/PrometheusChartWidget.tsx` → `MetricChartWidget.tsx` | `git mv` + rename export |
|
||||
| `widgets/PrometheusGaugeWidget.tsx` → `MetricGaugeWidget.tsx` | `git mv` + rename export |
|
||||
| `widgets/PrometheusMeanWidget.tsx` → `MetricMeanWidget.tsx` | `git mv` + rename export |
|
||||
| `widgets/__tests__/Prometheus*Widget.test.tsx` → `Metric*Widget.test.tsx` | `git mv` (3 files) + update imports |
|
||||
| `widgets/index.ts` | Update 3 barrel exports |
|
||||
| `integrations/registry.ts` | Update 3 imports + 3 component refs |
|
||||
| `widgets/PrometheusMetricWidget.tsx` | Adapt for normalized series shape (if §3.4 Option A) |
|
||||
@@ -0,0 +1,134 @@
|
||||
# SDD Proposal: Grafana Metric Gateway
|
||||
|
||||
**Change:** `grafana-metric-gateway`
|
||||
**Phase:** proposal
|
||||
**Date:** 2026-07-09
|
||||
|
||||
## 1. Problem / Why Now
|
||||
|
||||
**New network constraint surfaced after `prometheus-direct-charting` shipped (2026-07-08):** the Prometheus instance is *not directly reachable* from the Manage backend (firewalled / different network / no auth proxy). Grafana is the only reachable surface and already holds an authenticated, datasource-aware API. The direct-Prom path added by `prometheus-direct-charting` therefore cannot work in production — every chart/gauge/mean/metric widget call fails at the network layer.
|
||||
|
||||
Rather than expose Prometheus directly (infra change outside Manage's control), route metric queries through Grafana's existing `/api/ds/query` datasource proxy. Grafana becomes the transport; Prometheus remains the logical source.
|
||||
|
||||
This is a **partial revert of `prometheus-direct-charting`**, justified by new information that was not on the table when direct-Prom was chosen. It is not a fourth flip of preference — the network reality forces it.
|
||||
|
||||
## 2. Target Users and Situations
|
||||
|
||||
- **Primary users:** Operators whose Prometheus sits behind a firewall or on an unreachable network, with Grafana as the only authenticated entry point.
|
||||
- **Workflow moments:** identical to today — open a dashboard, see metric charts/gauges/means. The only change is that the data flows Grafana→Prom instead of Manage→Prom directly.
|
||||
- **Urgency:** High. The widgets added in Change A are currently non-functional in this network topology.
|
||||
|
||||
## 3. Product Outcome
|
||||
|
||||
After this change:
|
||||
|
||||
- Operators configure a **`prometheus` service** whose connection fields point at a Grafana gateway (URL + API key + datasource UID), not at Prometheus directly.
|
||||
- The **chart / gauge / mean / metric** widget kinds behave exactly as today (same config, same rendering, same `{series}` shape) — only the transport changes.
|
||||
- Widgets are renamed to **neutral `Metric*`** names (`MetricChartWidget`, `MetricGaugeWidget`, `MetricMeanWidget`) so the component names survive future source changes and don't mislead (the widgets talk to Grafana now, not Prometheus directly).
|
||||
- The `prometheus` service type remains the sole metric surface — no `grafana` service type is reintroduced.
|
||||
|
||||
## 4. Scope Boundaries and Non-Goals
|
||||
|
||||
### In scope
|
||||
|
||||
- **`prometheus` service config schema changes:** drop the direct-Prom `base_url`; add `grafana_url` (ServiceBaseUrl), `datasource_uid` (default `"prometheus"`), keep `timeout_seconds`.
|
||||
- **`prometheus` service secret schema changes:** add `grafana_api_key` (encrypted, required).
|
||||
- **`MetricSource` adapter** (rename of `PrometheusWidgetSource`): the `chart` / `gauge` / `mean` / `metric` dispatch paths issue `POST {grafana_url}/api/ds/query` with the API key + datasource UID + PromQL expr, and normalize Grafana's frames response into the existing `{series}` / `{value}` shapes.
|
||||
- **Frames→series normalization restored** (recovered from git history at commit `65bae95`, the pre-Change-A `GrafanaWidgetSource._fetch_chart`), refactored into the existing `widgets/prometheus_range.py` helper module alongside `normalize_prometheus_matrix`.
|
||||
- **Widget rename:** `PrometheusChartWidget` → `MetricChartWidget`, `PrometheusGaugeWidget` → `MetricGaugeWidget`, `PrometheusMeanWidget` → `MetricMeanWidget` (via `git mv`, preserving history). Bindings in `registry.ts` move to the new names; the `prometheus` service's widget kinds stay `chart`/`gauge`/`mean`/`metric` (unchanged).
|
||||
- **Status check update:** `get_prometheus_status` now runs a trivial query (`up`) through the Grafana gateway rather than hitting Prom `/api/v1/status/buildinfo` directly. This actually validates the full path (Grafana up + datasource reachable + Prom responding) — a stronger signal than the pre-change check.
|
||||
- **`service-credential-tester` proposal update:** the Prom test routine in `openspec/changes/service-credential-tester/proposal.md` must be updated to test the Grafana gateway path (POST `/api/ds/query` with `up`), not direct Prom. Dependency, not a blocker.
|
||||
- **CHANGELOG migration note:** existing `prometheus` service instances must be reconfigured (replace `base_url` with `grafana_url` + add `grafana_api_key` secret + optionally `datasource_uid`).
|
||||
|
||||
### Non-goals (explicitly out of scope)
|
||||
|
||||
- **Reintroducing the `grafana` service type.** Grafana is the transport, not a first-class service. No `grafana` registry entry, no `GrafanaLinkWidget`, no `LinksTab`, no `get_grafana_status`. (Those were intentionally removed; this change does not restore them.)
|
||||
- **Grafana deep-link widgets** (dashboard UID + panel ID links). Out of scope; the user explicitly wanted only the query gateway.
|
||||
- **A pluggable "data source middleware" framework.** Per-widget-kind direct wiring only; no adapter registry abstraction. (Same discipline as Change A.)
|
||||
- **Touching the qBittorrent widgets, the storage harness, or MediaIndex.** Unaffected.
|
||||
- **Renaming the `prometheus` service type itself.** It stays `prometheus` (per operator decision — "Prometheus is the concept, Grafana is how I reach it").
|
||||
- **Exposing Prometheus directly as an alternative.** Direct-Prom is removed, not kept-as-fallback. If a future topology can reach Prom directly, that's a separate change.
|
||||
- **Grafana status / health as a separate surface.** Grafana reachability is folded into the Prom status check (it validates the gateway path).
|
||||
|
||||
## 5. High-Level Approach
|
||||
|
||||
### 5.1 Backend
|
||||
|
||||
1. **`integrations/prometheus.py`** — update `PrometheusConfig`:
|
||||
- Remove `base_url`.
|
||||
- Add `grafana_url: ServiceBaseUrl` (reuses the existing schema-enforced http(s) validator).
|
||||
- Add `datasource_uid: str = "prometheus"`.
|
||||
- Keep `timeout_seconds: int = 10`.
|
||||
- Secret schema: replace any existing secret with `grafana_api_key` (required, encrypted).
|
||||
2. **`widgets/prometheus_range.py`** — add `normalize_grafana_frames(raw) -> list[series]` alongside the existing `normalize_prometheus_matrix`. Recovered from `65bae95`, refactored to share the label-dedup rule with the matrix normalizer.
|
||||
3. **`widgets/sources.py`** — rename `PrometheusWidgetSource` → `MetricSource` (internal class; service-type key stays `"prometheus"` in `SERVICE_ADAPTERS`). Each of `_fetch_chart`, `_fetch_gauge`, `_fetch_mean`, and the instant-`metric` path switches from `/api/v1/query[_range]` to `POST {grafana_url}/api/ds/query` with body:
|
||||
|
||||
```json
|
||||
{"queries": [{"datasource": {"uid": "<datasource_uid>", "type": "prometheus"},
|
||||
"expr": "<promql>", "format": "time_series",
|
||||
"intervalMs": <step_ms>, "maxDataPoints": <pts>, "refId": "A"}],
|
||||
"from": "<window_start>", "to": "now"}
|
||||
```
|
||||
|
||||
Then normalize via `normalize_grafana_frames`. Window presets (1h/6h/24h/7d) and step derivation (Change A's `step_for_window`) map to Grafana's `from`/`intervalMs`.
|
||||
4. **`routers/monitoring.py`** — `get_prometheus_status` runs `up` through the gateway; success → `{up: true, version: <grafana-prom-datasource-implication>}`; failure → specific message (auth, unreachable, datasource not found).
|
||||
5. **Tests** — update existing tests: the chart/gauge/mean adapter tests now assert a `POST /api/ds/query` call (mocked) instead of a direct Prom GET. Reuse the same `{series}` / `{value}` assertions.
|
||||
|
||||
### 5.2 Frontend
|
||||
|
||||
1. **`git mv` widget files** (history-preserving): `PrometheusChartWidget.tsx` → `MetricChartWidget.tsx`, `PrometheusGaugeWidget.tsx` → `MetricGaugeWidget.tsx`, `PrometheusMeanWidget.tsx` → `MetricMeanWidget.tsx`, plus their test files. Rename the exported components. The recharts/`LineSeriesChart`/gauge-band rendering is preserved unchanged.
|
||||
2. **`integrations/registry.ts`** — the `prometheus` service binding keeps widget kinds `chart`/`gauge`/`mean`/`metric` but points at the renamed `Metric*` components. No user-visible change.
|
||||
3. **Service config form (`ServiceConfigFields`)** — automatically reflects the new schema (grafana_url, datasource_uid) since it renders from the backend-provided `config_schema`. No bespoke UI work beyond relabeling the secret field.
|
||||
4. **Types** — `PrometheusStatus` type stays; possibly gains a `gateway` field noting the path. Minimal change.
|
||||
|
||||
### 5.3 Canonical spec impact — first non-additive sync
|
||||
|
||||
The `prometheus-charting` canonical domain (`openspec/specs/prometheus-charting/spec.md`) was created by Change A with requirements stating direct Prom querying (SC-101, SC-102, SC-104, etc.). This change **MODIFIES** those requirements: the data source becomes Grafana's gateway, not direct Prom. This is the first non-additive canonical sync in the project — `sdd-sync` will need a `## MODIFIED Requirements` delta rather than `## ADDED`. Flagged for the sync phase; the requirements' *intent* (multi-series chart, gauge bands, mean over window) is unchanged, only the *mechanism* (transport) changes.
|
||||
|
||||
## 6. Success Criteria / Acceptance Criteria
|
||||
|
||||
1. A `prometheus` service configured with Grafana gateway fields (URL + API key + datasource UID) successfully powers `chart`/`gauge`/`mean`/`metric` widgets — no direct Prom network call is made.
|
||||
2. The chart widget renders multi-series line charts with the same look as today (recharts via `LineSeriesChart`).
|
||||
3. The gauge widget renders threshold bands; the mean widget renders the windowed mean — both sourced via Grafana.
|
||||
4. The instant `metric` widget returns a scalar via Grafana.
|
||||
5. `get_prometheus_status` validates the full gateway path; a broken Grafana or unreachable datasource produces a specific error message.
|
||||
6. Widgets are renamed to `MetricChartWidget` / `MetricGaugeWidget` / `MetricMeanWidget`; no `Prometheus*Widget` names remain in frontend source; tests renamed consistently.
|
||||
7. The `prometheus-charting` canonical domain's transport-related requirements are MODIFIED to reflect the Grafana gateway; durable requirements (chart/gauge/mean behavior) are preserved.
|
||||
8. The `service-credential-tester` proposal's Prom test routine is updated to test the gateway path.
|
||||
9. CHANGELOG documents the operator migration (reconfigure `prometheus` services with Grafana gateway fields).
|
||||
10. `pytest`, `npm run build`, `npm run lint`, `npm run test` all green.
|
||||
|
||||
## 7. Risks and Mitigations
|
||||
|
||||
| Risk | Mitigation |
|
||||
|------|------------|
|
||||
| **Reintroducing complexity that Change A removed.** The frames→series normalization was deleted for a reason. | Recover the known-good implementation from `65bae95` rather than rewriting; refactor into `prometheus_range.py` so matrix + frames normalizers share the label-dedup rule. |
|
||||
| **Grafana `/api/ds/query` response shape varies across Grafana versions.** | The recovered normalizer already handles the frames schema defensively (displayName → labels → field name fallback). Add a test fixture from a current Grafana version. |
|
||||
| **Existing `prometheus` service instances break silently** (their `base_url` config no longer exists). | SC-9 CHANGELOG note; startup config validation rejects the old shape with a clear migration message. |
|
||||
| **First non-additive canonical sync** — `sdd-sync` MODIFIED delta could mismatch. | Author the delta carefully; match requirement IDs exactly; verify with `sdd-status` before archive. |
|
||||
| **Credential-tester proposal dependency.** | Update it in the same change (or sequence this change before the credential tester's apply). |
|
||||
| **Operators with a directly-reachable Prom lose that option.** | Explicit non-goal; documented. If needed later, add a `direct_url` optional field as a separate change. |
|
||||
| **Review budget (>400 lines).** | Likely 2 slices: (S1) backend config + adapter + frames normalizer + tests; (S2) frontend widget renames + registry + status check. |
|
||||
|
||||
## 8. Resolved Questions (no question round needed)
|
||||
|
||||
- **Q1 — Keep `prometheus` service type?** Yes. It remains the user-facing logical service; only its config/secret schema and adapter internals change.
|
||||
- **Q2 — Restore `grafana` service type?** No. Grafana is the transport, not a service. No deep-link widgets, no status surface.
|
||||
- **Q3 — Widget naming?** Neutral `Metric*` (MetricChartWidget / MetricGaugeWidget / MetricMeanWidget). Decouples widget identity from transport; survives future source changes.
|
||||
- **Q4 — Direct Prom path kept as fallback?** No. Removed. If a future topology needs it, separate change.
|
||||
- **Q5 — Status check approach?** Run `up` through the gateway; validates the full path in one call.
|
||||
|
||||
## 9. Future Phases
|
||||
|
||||
1. **Optional `direct_url` fallback** on the `prometheus` service for topologies where Prom IS directly reachable (skip the Grafana hop).
|
||||
2. **Multi-datasource support** — one Grafana gateway, many datasources (Loki, InfluxDB) selectable per widget.
|
||||
3. **Datasource health breakdown** — status check distinguishes "Grafana down" vs "Prom datasource down" via Grafana's `/api/datasources/health`.
|
||||
|
||||
---
|
||||
|
||||
## Notes for downstream phases
|
||||
|
||||
- **Dependency:** the `service-credential-tester` proposal must be updated when this change's design is firm (its Prom test routine changes from direct Prom to gateway query).
|
||||
- **Canonical first:** this is the project's first non-additive canonical sync (`prometheus-charting` MODIFIED requirements). The sync phase should be deliberate.
|
||||
- **Recovery source:** the frames→series normalizer is known-good at git commit `65bae95` (`backend/src/media_library_viewer_api/widgets/sources.py`, `_fetch_chart`). Restore from there, don't rewrite.
|
||||
- **Honest scope note:** this partially reverts `prometheus-direct-charting` (2026-07-08). That change's direct-Prom path and Grafana removal are undone; its gauge/mean/LineSeriesChart/rendering work is preserved. The reversal is justified by the new network constraint (Q1, §1).
|
||||
@@ -0,0 +1,305 @@
|
||||
# SDD Spec: Grafana Metric Gateway
|
||||
|
||||
**Change:** `grafana-metric-gateway`
|
||||
**Phase:** spec
|
||||
**Date:** 2026-07-09
|
||||
|
||||
This spec defines the acceptance requirements for the change. Requirements use the `GM-` prefix (the `prometheus-charting` canonical domain, created by `prometheus-direct-charting`, uses `SC-`; this change supersedes several of those — see §"Canonical delta intent").
|
||||
|
||||
## Requirement categories
|
||||
|
||||
1. Gateway transport (config + query path)
|
||||
2. Frames → series normalization
|
||||
3. Window presets + step mapping
|
||||
4. Widget kind behavior (chart / gauge / mean / metric)
|
||||
5. Status check via gateway
|
||||
6. Widget rename to neutral `Metric*`
|
||||
7. Startup validation + migration
|
||||
8. Test + build greenness
|
||||
|
||||
---
|
||||
|
||||
## 1. Gateway transport (config + query path)
|
||||
|
||||
### GM-101 — Prometheus service config points at a Grafana gateway
|
||||
|
||||
The `prometheus` service type's config model MUST declare `grafana_url: ServiceBaseUrl` (http(s)-schema-enforced), `datasource_uid: str = "prometheus"`, and `timeout_seconds: int = 10`. The former `base_url` field MUST be removed. The secret schema MUST declare `grafana_api_key` (required, encrypted via Fernet) and MUST NOT carry the old optional `api_key`.
|
||||
|
||||
#### Scenario: Config schema reflects gateway fields
|
||||
|
||||
- GIVEN the `grafana-metric-gateway` change is applied
|
||||
- WHEN `integrations/prometheus.py` `PrometheusConfig` is inspected
|
||||
- THEN it declares `grafana_url`, `datasource_uid`, `timeout_seconds`
|
||||
- AND it does NOT declare `base_url`
|
||||
- AND `DEFINITION.secret_fields` contains `grafana_api_key` (required=True)
|
||||
- AND `DEFINITION.secret_fields` does NOT contain `api_key`
|
||||
|
||||
### GM-102 — All metric queries route through Grafana /api/ds/query
|
||||
|
||||
The widget source adapter (renamed `MetricSource`, service-type key stays `"prometheus"`) MUST issue `POST {grafana_url}/api/ds/query` for all four widget kinds (`chart`, `gauge`, `mean`, `metric`). The request body MUST contain a `queries` array with `{datasource: {uid: <datasource_uid>, type: "prometheus"}, expr: <promql>, format: "time_series", intervalMs: <step_ms>, maxDataPoints: <pts>, refId: "A"}` plus `from`/`to` time bounds. The request MUST carry `Authorization: Bearer {grafana_api_key}`. The adapter MUST NOT issue any direct `GET /api/v1/query` or `GET /api/v1/query_range` call to a Prometheus URL.
|
||||
|
||||
#### Scenario: Chart fetch uses gateway POST
|
||||
|
||||
- GIVEN a `prometheus` service configured with `grafana_url`, `grafana_api_key`, `datasource_uid`
|
||||
- WHEN a `chart` widget data fetch is executed (mocked HTTP)
|
||||
- THEN the adapter issues `POST {grafana_url}/api/ds/query`
|
||||
- AND the request body contains `queries[0].datasource.uid == datasource_uid`
|
||||
- AND the request body contains `queries[0].expr == <promql>`
|
||||
- AND the `Authorization` header is `Bearer {grafana_api_key}`
|
||||
- AND no `GET /api/v1/query_range` call is made
|
||||
|
||||
#### Scenario: No direct Prom HTTP call
|
||||
|
||||
- GIVEN the change is applied
|
||||
- WHEN `widgets/sources.py` `MetricSource` is inspected
|
||||
- THEN no code path constructs a URL matching `/api/v1/query` or `/api/v1/query_range` against a Prometheus `base_url`
|
||||
|
||||
### GM-103 — Gateway errors degrade gracefully
|
||||
|
||||
A Grafana timeout, connection error, HTTP 401/403 (auth), or non-2xx response MUST cause the widget data fetch to return `{ "error": str }` (not raise), so the frontend renders the standard per-widget error state and the rest of the dashboard remains functional. The error message MUST be specific enough to distinguish auth failure from unreachable-host from datasource-not-found where the Grafana response permits.
|
||||
|
||||
#### Scenario: Auth failure surfaces a readable error
|
||||
|
||||
- GIVEN a `prometheus` service with an invalid `grafana_api_key`
|
||||
- WHEN a widget data fetch is executed (mocked HTTP returns 401)
|
||||
- THEN the adapter returns `{ "error": <str mentioning auth or 401> }`
|
||||
- AND no exception propagates
|
||||
|
||||
#### Scenario: Timeout surfaces a readable error
|
||||
|
||||
- GIVEN a `prometheus` service whose Grafana gateway does not respond within the timeout
|
||||
- WHEN a widget data fetch is executed
|
||||
- THEN the adapter returns `{ "error": <str mentioning timeout> }`
|
||||
|
||||
---
|
||||
|
||||
## 2. Frames → series normalization
|
||||
|
||||
### GM-104 — Frames normalizer restored and shared
|
||||
|
||||
A `normalize_grafana_frames(raw) -> list[dict]` helper MUST exist in `widgets/prometheus_range.py` alongside the existing `normalize_prometheus_matrix`. It MUST parse Grafana's `/api/v1/ds/query` response (`results.<refId>.frames[]` with `data.values` + `schema.fields`) and produce the SAME `{label, points:[{t:int, v:float|null}]}` series shape the frontend chart renderer already consumes. The label-dedup rule (`label (n)` suffix on collision) MUST be shared with `normalize_prometheus_matrix` (extracted to a common inner helper, not duplicated).
|
||||
|
||||
#### Scenario: Frames normalized to series shape
|
||||
|
||||
- GIVEN a sample Grafana `/api/ds/query` response with one frame containing timestamps `[1000, 2000]` and values `[1.5, 2.5]`
|
||||
- WHEN `normalize_grafana_frames(raw)` is called
|
||||
- THEN it returns `[{"label": <str>, "points": [{"t": 1000, "v": 1.5}, {"t": 2000, "v": 2.5}]}]`
|
||||
|
||||
#### Scenario: Label fallback chain
|
||||
|
||||
- GIVEN a frame whose value-field has `config.displayName` set
|
||||
- WHEN normalized
|
||||
- THEN the label is the displayName
|
||||
- GIVEN a frame whose value-field has Prometheus `labels` but no displayName
|
||||
- WHEN normalized
|
||||
- THEN the label is the sorted `k=v` join (excluding `__`-prefixed keys)
|
||||
- GIVEN a frame with neither displayName nor labels
|
||||
- WHEN normalized
|
||||
- THEN the label is `"value"`
|
||||
|
||||
#### Scenario: Dedup shared with matrix path
|
||||
|
||||
- GIVEN two frames that would produce the same label
|
||||
- WHEN normalized
|
||||
- THEN the second gets a `(1)` suffix
|
||||
- AND the dedup logic is not copy-pasted (a shared helper or shared suffix rule is used by both `normalize_grafana_frames` and `normalize_prometheus_matrix`)
|
||||
|
||||
---
|
||||
|
||||
## 3. Window presets + step mapping
|
||||
|
||||
### GM-105 — Window presets map to Grafana from/to + intervalMs
|
||||
|
||||
The existing `WINDOW_PRESETS` (`1h`/`6h`/`24h`/`7d` → seconds) and `step_for_window` math MUST be reused to derive the gateway request's `from` (e.g. `"now-1h"`), `to` (`"now"`), and `intervalMs` (`step * 1000`). The resulting point count MUST land in the 100–300 band (same target as the pre-change direct-Prom path). Users do not configure `from`/`to`/`step`/`intervalMs` directly.
|
||||
|
||||
#### Scenario: 1h preset maps correctly
|
||||
|
||||
- GIVEN a `chart` widget with `window: "1h"`
|
||||
- WHEN the gateway request body is constructed
|
||||
- THEN `from` resolves to approximately `now - 3600s`
|
||||
- AND `to` is `"now"`
|
||||
- AND `intervalMs` is `step_for_window(3600) * 1000`
|
||||
- AND the expected point count is ~200
|
||||
|
||||
---
|
||||
|
||||
## 4. Widget kind behavior (chart / gauge / mean / metric)
|
||||
|
||||
### GM-106 — Chart renders multi-series via gateway
|
||||
|
||||
The `chart` widget MUST query the gateway with a range query (PromQL expr + window preset) and return `{ "series": [...] }` via `normalize_grafana_frames`. The frontend `MetricChartWidget` MUST render all returned series via `LineSeriesChart`, each as its own line with a distinct color. There is no single-series restriction.
|
||||
|
||||
#### Scenario: Multi-series chart through gateway
|
||||
|
||||
- GIVEN a `chart` widget whose PromQL returns two series
|
||||
- WHEN data is fetched via the gateway (mocked)
|
||||
- THEN the adapter returns `{ "series": [<2 entries>] }`
|
||||
- AND the frontend renders two distinct lines
|
||||
|
||||
### GM-107 — Gauge renders instant scalar via gateway
|
||||
|
||||
The `gauge` widget MUST query the gateway with an instant PromQL query (mapped to a Grafana instant datasource query or a range query with a single point) and return `{ "value": float, "warn_at"?, "crit_at"?, "min"?, "max"?, "unit"? }`. If the query returns multiple series, the adapter MUST return `{ "error": str }` (scalar-only). The frontend `MetricGaugeWidget` MUST render threshold bands when `warn_at`/`crit_at` are set; otherwise a single neutral gauge.
|
||||
|
||||
#### Scenario: Gauge scalar-only through gateway
|
||||
|
||||
- GIVEN a `gauge` widget whose PromQL returns one scalar
|
||||
- WHEN fetched via the gateway
|
||||
- THEN the adapter returns `{ "value": <float>, ... }`
|
||||
- GIVEN a `gauge` widget whose PromQL returns multiple series
|
||||
- WHEN fetched
|
||||
- THEN the adapter returns `{ "error": <str> }`
|
||||
|
||||
### GM-108 — Mean computes over a gateway range window
|
||||
|
||||
The `mean` widget MUST query the gateway with a range query over the configured window preset, average all non-null point values of the single series client-side, and return `{ "value": float, "unit"? }`. Scalar-only: multiple series → `{ "error": str }`.
|
||||
|
||||
#### Scenario: Mean through gateway
|
||||
|
||||
- GIVEN a `mean` widget with `window: "1h"` and a PromQL returning one series
|
||||
- WHEN fetched via the gateway
|
||||
- THEN the adapter returns `{ "value": <mean of non-null points> }`
|
||||
|
||||
### GM-109 — Metric widget returns scalar via gateway
|
||||
|
||||
The instant `metric` widget MUST query the gateway and return `{ "result": <data> }` (same shape as today) sourced via Grafana rather than direct Prom.
|
||||
|
||||
#### Scenario: Metric instant query through gateway
|
||||
|
||||
- GIVEN a `metric` widget with a PromQL expression
|
||||
- WHEN fetched
|
||||
- THEN the adapter issues a gateway POST (not a direct Prom GET)
|
||||
- AND returns the scalar result in the existing `{ "result": ... }` shape
|
||||
|
||||
---
|
||||
|
||||
## 5. Status check via gateway
|
||||
|
||||
### GM-110 — get_prometheus_status validates the full gateway path
|
||||
|
||||
`get_prometheus_status` MUST run a trivial query (e.g. `up`) through the Grafana gateway. Success → `{ "up": true, "version": <str>, ... }` (version derived from the successful path; if Grafana's response doesn't carry a Prom version, a sentinel like `"ok"` is acceptable). Failure → `{ "up": false, "error": <specific str> }` distinguishing auth failure, unreachable host, and datasource-not-found where the response permits.
|
||||
|
||||
#### Scenario: Healthy gateway
|
||||
|
||||
- GIVEN a `prometheus` service with valid gateway credentials
|
||||
- WHEN `get_prometheus_status` is called
|
||||
- THEN it issues a gateway POST with `expr: "up"`
|
||||
- AND returns `{ "up": true, ... }`
|
||||
|
||||
#### Scenario: Auth failure in status
|
||||
|
||||
- GIVEN a `prometheus` service with an invalid `grafana_api_key`
|
||||
- WHEN `get_prometheus_status` is called
|
||||
- THEN it returns `{ "up": false, "error": <str mentioning auth> }`
|
||||
|
||||
---
|
||||
|
||||
## 6. Widget rename to neutral Metric*
|
||||
|
||||
### GM-111 — Widget files renamed via git mv
|
||||
|
||||
`PrometheusChartWidget.tsx` → `MetricChartWidget.tsx`, `PrometheusGaugeWidget.tsx` → `MetricGaugeWidget.tsx`, `PrometheusMeanWidget.tsx` → `MetricMeanWidget.tsx`, plus their test files, MUST be renamed via `git mv` (history preserved). The exported component names MUST change to `MetricChartWidget` / `MetricGaugeWidget` / `MetricMeanWidget`. The rendering code (recharts, `LineSeriesChart`, gauge bands) MUST be preserved unchanged.
|
||||
|
||||
#### Scenario: No Prometheus*Widget names remain
|
||||
|
||||
- GIVEN the change is applied
|
||||
- WHEN `grep -r "PrometheusChartWidget\|PrometheusGaugeWidget\|PrometheusMeanWidget" frontend/src` is run
|
||||
- THEN it returns no matches
|
||||
- AND `MetricChartWidget.tsx`, `MetricGaugeWidget.tsx`, `MetricMeanWidget.tsx` exist
|
||||
|
||||
### GM-112 — Registry binds Metric* components
|
||||
|
||||
`integrations/registry.ts` MUST bind the `prometheus` service's `chart`/`gauge`/`mean` widget kinds to the renamed `Metric*` components. The widget KIND names (`chart`/`gauge`/`mean`/`metric`) MUST NOT change (they are persisted in widget instance rows).
|
||||
|
||||
#### Scenario: Registry uses Metric* components
|
||||
|
||||
- GIVEN the change is applied
|
||||
- WHEN `SERVICE_REGISTRY.prometheus.widgets` is inspected
|
||||
- THEN the `chart` kind's `component` is `MetricChartWidget`
|
||||
- AND the kind strings are still `"chart"`, `"gauge"`, `"mean"`, `"metric"`
|
||||
|
||||
---
|
||||
|
||||
## 7. Startup validation + migration
|
||||
|
||||
### GM-113 — Startup rejects old prometheus config shape
|
||||
|
||||
When the backend starts and a persisted `prometheus` service instance has a `config` dict containing the old `base_url` key (without `grafana_url`), the startup config validation MUST log a clear migration message (naming the service) and either skip the instance gracefully or mark it as misconfigured — it MUST NOT crash startup.
|
||||
|
||||
#### Scenario: Old-shape config logged not crashed
|
||||
|
||||
- GIVEN a persisted `prometheus` service with `config: {"base_url": "http://prom:9090"}` (no `grafana_url`)
|
||||
- WHEN the backend starts
|
||||
- THEN startup completes (no crash)
|
||||
- AND a log message names the service and instructs reconfiguration
|
||||
|
||||
### GM-114 — CHANGELOG documents the migration
|
||||
|
||||
`CHANGELOG.md` `[Unreleased]` MUST include an entry stating that `prometheus` service instances must be reconfigured: replace `base_url` with `grafana_url`, add the `grafana_api_key` secret, and optionally set `datasource_uid`. It MUST be marked **BREAKING**.
|
||||
|
||||
#### Scenario: CHANGELOG entry present
|
||||
|
||||
- GIVEN the change is applied
|
||||
- WHEN `CHANGELOG.md` is inspected
|
||||
- THEN an `[Unreleased]` entry mentions `grafana_url`, `grafana_api_key`, `datasource_uid`
|
||||
- AND it is marked BREAKING
|
||||
|
||||
---
|
||||
|
||||
## 8. Test + build greenness
|
||||
|
||||
### GM-115 — Backend tests + ruff green
|
||||
|
||||
`PYTHONPATH=src python3 -m pytest -q` and `PYTHONPATH=src python3 -m ruff check src tests` from `backend/` MUST pass. New/updated tests MUST cover: gateway POST assertion (mocked), `normalize_grafana_frames` (label fallback chain, dedup, NaN handling), gauge/mean scalar-only through gateway, status check through gateway, and the startup old-config validation.
|
||||
|
||||
### GM-116 — Frontend build + lint + test green
|
||||
|
||||
`npm run build`, `npm run lint`, and `npx vitest run` from `frontend/` MUST pass (0 errors). The renamed `Metric*` widget tests MUST cover loading, error, and rendered states.
|
||||
|
||||
---
|
||||
|
||||
## Canonical delta intent
|
||||
|
||||
This is the project's **first non-additive canonical sync**. The `prometheus-charting` canonical domain (`openspec/specs/prometheus-charting/spec.md`) has 27 requirements (SC-101..SC-127). This change MODIFIES the transport-related requirements, PRESERVES the durable-behavior requirements, and ADDS new requirements. The sync phase (`sdd-sync`) MUST author a `## MODIFIED Requirements` delta (not `## ADDED` only).
|
||||
|
||||
### MODIFIED (supersedes a canonical SC-xxx — intent may be preserved or changed)
|
||||
|
||||
| GM-req | Supersedes | What changes |
|
||||
|---|---|---|
|
||||
| GM-101 | SC-101 (partial) | Transport: direct Prom `/api/v1/query_range` → Grafana `/api/ds/query`; config `base_url` → `grafana_url` + `datasource_uid` + `grafana_api_key` |
|
||||
| GM-102 | SC-101 (partial) | No direct Prom HTTP; all queries via gateway POST |
|
||||
| GM-103 | SC-103 | Error semantics preserved (graceful `{error}`), but transport-specific failures (Grafana 401/403, datasource-not-found) are new |
|
||||
| GM-104 | SC-102 | Shared helper now holds BOTH `normalize_prometheus_matrix` (kept for qBit) AND `normalize_grafana_frames` (new/restored); dedup shared |
|
||||
| GM-105 | SC-104 | Step math reused but mapped to `intervalMs`/`maxDataPoints` instead of Prom `step` |
|
||||
| GM-106 | SC-107 | Multi-series intent preserved; transport changes |
|
||||
| GM-107 | SC-109, SC-111 | Gauge scalar-only preserved; instant query now via gateway |
|
||||
| GM-108 | SC-112, SC-114 | Mean over window preserved; range query now via gateway |
|
||||
| GM-109 | SC-105 (partial) | `metric` kind still bound to `prometheus`; transport changes |
|
||||
| GM-110 | (new behavior for status) | `get_prometheus_status` now validates gateway path (previously direct Prom health) |
|
||||
| GM-111 | SC-125 | Widget names change: `Prometheus*Widget` → `Metric*Widget` |
|
||||
| GM-112 | SC-105 (partial) | Registry still binds kinds to `prometheus`; component refs rename |
|
||||
| GM-113 | SC-126 (partial) | No auto-migration still holds; startup validation of old shape is new |
|
||||
| GM-114 | SC-122 | CHANGELOG migration note changes from "delete grafana, recreate prometheus" to "reconfigure prometheus with gateway fields" |
|
||||
| — | SC-115 | **MODIFIED**: "no grafana refs in backend" is no longer fully true — `normalize_grafana_frames` is a grafana-named function. The criterion becomes "no `grafana` SERVICE TYPE refs" (transport refs allowed). |
|
||||
| — | SC-116 | **MODIFIED**: same as SC-115 for frontend — grafana transport is allowed; no grafana service type / link widget. |
|
||||
| — | SC-117 | **PRESERVED** — no `grafana` service type is reintroduced. Still true. |
|
||||
| — | SC-118 | **PRESERVED** — `get_grafana_status` stays removed; no grafana status surface. |
|
||||
| — | SC-119 | **PRESERVED** — orphaned widgets still degrade gracefully. |
|
||||
| — | SC-120 | **PRESERVED** — no grafana-specific tests reintroduced. |
|
||||
| — | SC-121 | **MODIFIED**: `config.yaml` now references Grafana as the sanctioned transport (not "must not reference grafana"). |
|
||||
|
||||
### PRESERVED (unchanged in canonical — no delta entry needed)
|
||||
|
||||
SC-106 (chart renderer preserved), SC-108 (chart window preset), SC-110 (gauge threshold bands), SC-113 (mean plain PromQL), SC-117 (no grafana service type), SC-118 (no grafana status), SC-119 (orphan degrade), SC-120 (no grafana tests), SC-123 (backend tests pass), SC-124 (frontend build+lint), SC-127 (independent of service-storage-harness).
|
||||
|
||||
### ADDS (new canonical requirements — `## ADDED Requirements` in delta)
|
||||
|
||||
GM-110 (gateway-path status check — new behavior), GM-113 (startup old-config validation — new), and the canonical domain gains an explicit statement that Grafana is the sanctioned transport for the `prometheus` service.
|
||||
|
||||
---
|
||||
|
||||
## Assumptions (where the proposal was silent and the spec settles)
|
||||
|
||||
1. **Grafana instant-query mapping.** Grafana's `/api/ds/query` is inherently a range query. For the `gauge` (instant) and `metric` (instant) paths, the spec assumes the adapter issues a gateway query with a minimal window (e.g. `from=now-1m, to=now, maxDataPoints=1`) and extracts the single latest point, rather than attempting a separate Grafana instant-query endpoint. This mirrors how the pre-Change-A Grafana path handled chart data and is the pragmatic mapping. If Grafana exposes a cleaner instant path, the design phase may refine this — but the requirement (scalar result via gateway) holds either way.
|
||||
2. **Version field in status.** Grafana's `/api/ds/query` response does not carry Prometheus build-info. `get_prometheus_status` returns `version: "ok"` (or omits it) on success. A richer version (via Grafana's datasource health endpoint) is a future-phase item, not this change.
|
||||
3. **`normalize_prometheus_matrix` retention.** The matrix normalizer is kept (not deleted) because `QbittorrentSampleStore.window()` returns data in a matrix-adjacent shape consumed by `QbittorrentSpeedWidget`. Removing it would break the qBit speed widget. Both normalizers coexist.
|
||||
4. **Old `api_key` secret.** The old optional `api_key` secret on the `prometheus` service is removed from the definition. Persisted rows may still carry it in their encrypted secrets blob; it is inert (the adapter reads `grafana_api_key` only) and gets dropped on the next save.
|
||||
+106
@@ -0,0 +1,106 @@
|
||||
# Prometheus Charting — Delta (`grafana-metric-gateway`)
|
||||
|
||||
> Change: `grafana-metric-gateway` · Domain: `prometheus-charting` · Phase: **spec** (authored during `sdd-sync`).
|
||||
>
|
||||
> **This is the project's first non-additive canonical sync.** The `prometheus-charting` canonical
|
||||
> domain (SC-101 … SC-127, created by `prometheus-direct-charting`) described the *direct* Prometheus
|
||||
> transport. This change switches the `prometheus` service to a **Grafana gateway** transport
|
||||
> (`POST {grafana_url}/api/ds/query`), renames the chart/gauge/mean widgets to neutral `Metric*`
|
||||
> names, and validates the gateway path. Durable *behavior* requirements (multi-series chart, gauge
|
||||
> threshold bands, windowed mean) are **preserved**; only the *transport* and a few naming/status
|
||||
> statements are modified. The mapping of every change requirement (GM-101 … GM-116) to a canonical
|
||||
> SC-xxx is recorded in the flat `spec.md` §"Canonical delta intent".
|
||||
>
|
||||
> This delta therefore contains **both** a `## MODIFIED Requirements` block (full replacement bodies
|
||||
> for each superseded SC-xxx — matched by exact requirement ID) and an `## ADDED Requirements` block
|
||||
> (genuinely new requirements assigned fresh canonical IDs SC-128 … SC-130). PRESERVED requirements
|
||||
> (SC-106, SC-108, SC-110, SC-113, SC-117 … SC-120, SC-123, SC-124, SC-127) appear in **neither**
|
||||
> section — they are unchanged in the canonical spec.
|
||||
|
||||
## MODIFIED Requirements
|
||||
|
||||
> Each block below replaces the full canonical requirement of the same ID (matched by the exact
|
||||
> `### Requirement: SC-xxx — <name>` header). The requirement *intent* is preserved where the change
|
||||
> only swaps the mechanism (direct Prom → Grafana gateway); the body text is updated to the gateway
|
||||
> transport. No requirement IDs are renamed (RENAMED is unsupported by the native delta helper).
|
||||
|
||||
### Requirement: SC-101 — Prometheus range query returns the existing series shape
|
||||
|
||||
The `prometheus` service type's config MUST point at a Grafana gateway — declaring `grafana_url` (http(s)-schema-enforced), `datasource_uid` (default `"prometheus"`), and `timeout_seconds` — with a required, Fernet-encrypted `grafana_api_key` secret. The former direct-Prometheus `base_url` config field and the old optional `api_key` secret MUST be gone. When a `prometheus` widget of kind `chart` is fetched, the backend MUST issue `POST {grafana_url}/api/ds/query` (carrying `Authorization: Bearer {grafana_api_key}` and a `queries[0]` entry keyed by `datasource_uid`), MUST NOT issue any direct `GET /api/v1/query_range` against a Prometheus URL, and MUST return a payload of shape `{ "series": [{ "label": str, "points": [{ "t": int, "v": float|null }] }] }` — the exact shape the frontend chart renderer already consumes.
|
||||
|
||||
### Requirement: SC-102 — Series label normalization is shared and Prometheus-native
|
||||
|
||||
The metric-label → readable-label normalization MUST live in a single shared helper module that holds **both** normalizers — the retained Prom-matrix normalizer (`normalize_prometheus_matrix`) and the (re-)added Grafana-frames normalizer (`normalize_grafana_frames`) — and MUST deduplicate repeated labels via a `label (n)` suffix using **one shared dedup rule** (not duplicated across the two normalizers). Both normalizers produce the same `{label, points}` series shape, and the frames normalizer MUST apply the label fallback chain (displayName → sorted Prometheus labels excluding `__`-prefixed keys → `"value"`).
|
||||
|
||||
### Requirement: SC-103 — Range query errors degrade gracefully
|
||||
|
||||
A Grafana gateway timeout, connection error, HTTP 401/403 (auth), datasource-not-found, or non-2xx response MUST cause the widget data fetch to return `{ "error": str }` (not raise), so the frontend renders the standard per-widget error state and the rest of the dashboard remains functional. The error message MUST be specific enough to distinguish auth failure from unreachable-host from datasource-not-found where the Grafana response permits.
|
||||
|
||||
### Requirement: SC-104 — Step is derived from the window preset
|
||||
|
||||
Given a window preset (1h / 6h / 24h / 7d), the backend MUST reuse the existing `WINDOW_PRESETS` and `step_for_window` math to derive the gateway request's `intervalMs` (`step * 1000`), `maxDataPoints`, and `from`/`to` time bounds, landing the resulting point count in the same ~100–300 band as the pre-change direct-Prom path. Users do not configure `from`/`to`/`step`/`intervalMs` directly.
|
||||
|
||||
### Requirement: SC-105 — Chart widget moves from grafana to prometheus
|
||||
|
||||
Widget kinds `chart`, `gauge`, `mean`, and `metric` MUST remain bound to the `prometheus` service type — the kind strings are persisted in widget instance rows and MUST NOT change. The `grafana` service type MUST NOT be reintroduced and MUST NOT offer any widget kind. The backend adapter (internal class `MetricSource`, registry key still `"prometheus"`) and the frontend `SERVICE_REGISTRY` bind these kinds to the neutral `Metric*` components for `chart`/`gauge`/`mean` (and `PrometheusMetricWidget` for `metric`); all four kinds source their data via the Grafana gateway.
|
||||
|
||||
### Requirement: SC-107 — Chart supports multiple series
|
||||
|
||||
The `chart` widget MUST render all series returned by the gateway range query, each as its own line with a distinct color (via `normalize_grafana_frames`). There is no single-series restriction on `chart`.
|
||||
|
||||
### Requirement: SC-109 — Gauge renders an instant scalar
|
||||
|
||||
A widget kind named `gauge` MUST be bound to the `prometheus` service. Its data fetch MUST run an instant PromQL query through the Grafana gateway (a gateway query with a minimal window / single data point) and return the scalar result for rendering as a gauge.
|
||||
|
||||
### Requirement: SC-111 — Gauge is scalar-only
|
||||
|
||||
The `gauge` widget MUST render exactly one scalar value. If the gateway query returns multiple series, the adapter MUST return `{ "error": str }` (not silently pick one), directing the user to refine the PromQL.
|
||||
|
||||
### Requirement: SC-112 — Mean computes client-side over a window
|
||||
|
||||
A widget kind named `mean` MUST be bound to the `prometheus` service. Its data fetch MUST run a range query through the Grafana gateway over the configured window preset and return the arithmetic mean of all non-null point values of the single series as a single scalar.
|
||||
|
||||
### Requirement: SC-114 — Mean is scalar-only
|
||||
|
||||
The `mean` widget MUST render exactly one scalar value. If the gateway range query returns multiple series, the adapter MUST return `{ "error": str }` (not silently aggregate across series).
|
||||
|
||||
### Requirement: SC-115 — No grafana references in backend source
|
||||
|
||||
Grafana is the sanctioned **transport** for the `prometheus` service, so backend source legitimately contains Grafana transport references (e.g. `grafana_url`, `grafana_api_key`, `normalize_grafana_frames`, `POST …/api/ds/query`). After the change, those references are transport-only: there MUST be no `grafana` **service type**, no `grafana` service definition, and no `grafana` entry in the backend `SERVICE_DEFINITIONS` / `SERVICE_ADAPTERS` registries. The `integrations/grafana.py` service-type module stays deleted.
|
||||
|
||||
### Requirement: SC-116 — No grafana references in frontend source
|
||||
|
||||
Grafana transport is allowed in the frontend — the `prometheus` service config form renders Grafana gateway fields (`grafana_url`, `datasource_uid`) from the backend-provided schema. No frontend code MUST reintroduce a `grafana` **service type**, a Grafana deep-link / dashboard widget, `LinksTab`, or any Grafana-status UI surface. (Test fixtures where "Grafana" appears as a user-authored dashboard *shortcut label* unrelated to a service type remain excluded.)
|
||||
|
||||
### Requirement: SC-121 — config.yaml matches implementation
|
||||
|
||||
`openspec/config.yaml` MUST reflect that metric queries for the `prometheus` service are routed through a Grafana gateway (`POST /api/ds/query`) and that in-app charting via `recharts` is the sanctioned renderer. It MUST NOT carry the stale claims "Do NOT re-implement charting in-app", "No recharts/d3 is in use", or "Prometheus is queried directly (no Grafana middleman)".
|
||||
|
||||
### Requirement: SC-122 — CHANGELOG documents the migration
|
||||
|
||||
`CHANGELOG.md` `[Unreleased]` MUST include a **BREAKING** entry stating that existing `prometheus` service instances must be reconfigured: replace the old `base_url` with `grafana_url`, add the `grafana_api_key` secret, and optionally set `datasource_uid`, because metric queries now route through Grafana's `POST /api/ds/query`.
|
||||
|
||||
### Requirement: SC-125 — New widget kinds have tests
|
||||
|
||||
The renamed widgets `MetricChartWidget`, `MetricGaugeWidget`, and `MetricMeanWidget` MUST each have a frontend test covering at least: loading state, error state, and a rendered data case. (The `metric`-kind widget `PrometheusMetricWidget` is not renamed but remains tested.)
|
||||
|
||||
### Requirement: SC-126 — No silent data migration
|
||||
|
||||
The change MUST NOT auto-migrate persisted `prometheus` service instances from the old `base_url` config shape to the new `grafana_url` gateway shape (URLs and credentials differ; a safe automated rewrite is not possible). Migration is operator-driven per the CHANGELOG note; old-shape instances are flagged on startup (see SC-129) and degrade at runtime to a gateway error until reconfigured.
|
||||
|
||||
## ADDED Requirements
|
||||
|
||||
> Genuinely new requirements with fresh canonical IDs continuing the SC- sequence. The `GM-` change
|
||||
> prefixes are intentionally not reused in the canonical store.
|
||||
|
||||
### Requirement: SC-128 — get_prometheus_status validates the full gateway path
|
||||
|
||||
`get_prometheus_status` MUST validate the full metric path by running a trivial query (e.g. `up`) through the Grafana gateway (`POST {grafana_url}/api/ds/query`). Success MUST return `{ "up": true, "version": <str>, … }` — a sentinel such as `"ok"` is acceptable when Grafana's `/api/ds/query` response carries no Prometheus build-info. Failure MUST return `{ "up": false, "error": <specific str> }` distinguishing auth failure (HTTP 401/403), unreachable host, and datasource/gateway error where the response permits.
|
||||
|
||||
### Requirement: SC-129 — Startup logs old-shape prometheus config without crashing
|
||||
|
||||
When the backend starts and a persisted `prometheus` service instance carries the old `base_url` config key without `grafana_url`, startup MUST log a clear migration message naming the service and instructing reconfiguration, and MUST complete without crashing (it MUST NOT delete, disable, or otherwise mutate the instance). The instance's widget fetches degrade to a gateway error until the operator reconfigures it.
|
||||
|
||||
### Requirement: SC-130 — Grafana is the sanctioned transport for the prometheus service
|
||||
|
||||
The `prometheus` service type is the sole metric surface in Manage. Its metric queries (`chart`, `gauge`, `mean`, `metric`) are sanctioned to route through a Grafana gateway — `POST {grafana_url}/api/ds/query` with a `grafana_api_key` and a Prometheus `datasource_uid`. Grafana is the transport, not a first-class service type; a direct-Prometheus HTTP path is not supported.
|
||||
@@ -0,0 +1,189 @@
|
||||
# Sync Report — `grafana-metric-gateway`
|
||||
|
||||
> Phase: **sync** · Change: `grafana-metric-gateway` · Repo: `/home/user/manage`
|
||||
> Mode: file-backed (`artifactStore: openspec`). No source-code edits; only OpenSpec artifacts were
|
||||
> written. Not committed (parent owns the commit). The change folder was **not** moved (that is
|
||||
> `sdd-archive`'s job).
|
||||
|
||||
**Status: SYNCED.** The first non-additive canonical sync in the project. The `prometheus-charting`
|
||||
canonical domain's transport requirements were **MODIFIED** in place (direct Prom → Grafana gateway),
|
||||
durable behavior requirements were **PRESERVED** verbatim, and three genuinely new requirements were
|
||||
**ADDED** (SC-128 … SC-130).
|
||||
|
||||
---
|
||||
|
||||
## 1. Executive summary
|
||||
|
||||
The `prometheus-charting` canonical domain (`openspec/specs/prometheus-charting/spec.md`) was created
|
||||
by `prometheus-direct-charting` with 27 requirements (SC-101 … SC-127) describing the **direct**
|
||||
Prometheus transport. The `grafana-metric-gateway` change switches the `prometheus` service to a
|
||||
**Grafana gateway** transport (`POST {grafana_url}/api/ds/query`), renames the chart/gauge/mean
|
||||
widgets to neutral `Metric*` components, and validates the gateway path — while preserving the durable
|
||||
*behavior* contracts (multi-series chart, gauge threshold bands, windowed mean, scalar-only rules).
|
||||
|
||||
This sync authored a change-side **delta** spec with both `## MODIFIED Requirements` and
|
||||
`## ADDED Requirements` (the project's first delta to use MODIFIED), then applied it to the canonical
|
||||
spec by exact-ID block replacement. No requirements were REMOVED or RENAMED. Verify returned PASS
|
||||
(verdict in `verify-report.md`: 15 PASS + GM-115 PARTIAL-on-coverage-only, treated as effectively
|
||||
16/16 per the dispatch brief; `apply-progress.md` exists and reconciles the 33 task checkboxes the
|
||||
verify report flagged). All five quality gates were green at the verified commits (`df80c68`, `7e91e7f`).
|
||||
|
||||
## 2. Structured status & actionContext findings
|
||||
|
||||
The native `gentle-pi.sdd-status` passed by the parent reports `changeName: null` /
|
||||
`blockedReasons: ["Change selection is ambiguous: grafana-metric-gateway, per-instance-hook-scoping,
|
||||
service-credential-tester."]` because the engine auto-detected three active changes. This sync task
|
||||
was **explicitly assigned** `grafana-metric-gateway`; the ambiguity is a dispatch artifact and does
|
||||
not block this phase (`isNonAuthoritative: false`).
|
||||
|
||||
- `artifactStore: openspec`; change root `openspec/changes/grafana-metric-gateway/`.
|
||||
- Artifacts present: `proposal.md`, `spec.md` (flat, with §"Canonical delta intent" mapping),
|
||||
`design.md`, `tasks.md`, `verify-report.md`, `apply-progress.md`.
|
||||
- `verify: PASS` (verify-report verdict; gates green). The verify report's single CRITICAL was an
|
||||
**archive** blocker (33 unchecked task checkboxes + missing `apply-progress.md`); `apply-progress.md`
|
||||
now exists, and that condition does **not** block `sdd-sync` of the green code.
|
||||
- `actionContext`: `mode: repo-local`, `workspaceRoot: /home/user/manage`,
|
||||
`allowedEditRoots: ["/home/user/manage"]`, `warnings: []`. All three files written are inside the
|
||||
authoritative workspace / allowed edit roots. ✓
|
||||
- `relationships.sameDomainActiveChanges: []`, `collisions: []` — **no active same-domain
|
||||
collisions**, so no archive/sync ordering decision was required.
|
||||
- The `web-ui` and `service-storage` canonical domains were **not touched** (verified untouched by
|
||||
`git status`).
|
||||
|
||||
## 3. Domains synced & canonical files updated
|
||||
|
||||
| Domain | Change-side delta (source) | Canonical (sync target) | Action |
|
||||
|---|---|---|---|
|
||||
| `prometheus-charting` | `openspec/changes/grafana-metric-gateway/specs/prometheus-charting/spec.md` | `openspec/specs/prometheus-charting/spec.md` | **MODIFIED + ADDED** — 16 requirement blocks replaced in place by exact ID; 3 new requirements appended |
|
||||
|
||||
- **Canonical file updated:** `openspec/specs/prometheus-charting/spec.md` — now 30 requirements
|
||||
(SC-101 … SC-130).
|
||||
- **Change-side delta created:** `openspec/changes/grafana-metric-gateway/specs/prometheus-charting/spec.md`
|
||||
— `## MODIFIED Requirements` (16) + `## ADDED Requirements` (3).
|
||||
|
||||
## 4. Requirement delta (MODIFIED / ADDED / PRESERVED)
|
||||
|
||||
### MODIFIED (16) — transport & naming requirements replaced in place by exact SC- ID
|
||||
|
||||
| Canonical ID | Header (matched exactly) | What changed (GM source) |
|
||||
|---|---|---|
|
||||
| SC-101 | Prometheus range query returns the existing series shape | direct Prom `/api/v1/query_range` → Grafana `POST /api/ds/query`; config `base_url` → `grafana_url`+`datasource_uid`; secret `api_key` → `grafana_api_key` (GM-101, GM-102) |
|
||||
| SC-102 | Series label normalization is shared and Prometheus-native | shared module now holds both `normalize_prometheus_matrix` + `normalize_grafana_frames`; shared dedup (GM-104) |
|
||||
| SC-103 | Range query errors degrade gracefully | gateway-specific failures (401/403, datasource-not-found) added (GM-103) |
|
||||
| SC-104 | Step is derived from the window preset | step math reused, mapped to `intervalMs`/`maxDataPoints`/`from`-`to` (GM-105) |
|
||||
| SC-105 | Chart widget moves from grafana to prometheus | kinds stay on `prometheus`; transport is gateway; `Metric*` component binding (GM-109, GM-112) |
|
||||
| SC-107 | Chart supports multiple series | multi-series via gateway (GM-106) |
|
||||
| SC-109 | Gauge renders an instant scalar | instant query via gateway (GM-107) |
|
||||
| SC-111 | Gauge is scalar-only | scalar-only preserved through gateway (GM-107) |
|
||||
| SC-112 | Mean computes client-side over a window | range query via gateway (GM-108) |
|
||||
| SC-114 | Mean is scalar-only | scalar-only preserved through gateway (GM-108) |
|
||||
| SC-115 | No grafana references in backend source | becomes "no `grafana` **service type**"; transport refs allowed |
|
||||
| SC-116 | No grafana references in frontend source | grafana transport allowed; no service type / link widget |
|
||||
| SC-121 | config.yaml matches implementation | config.yaml now references Grafana as sanctioned transport |
|
||||
| SC-122 | CHANGELOG documents the migration | migration note → "reconfigure prometheus with gateway fields" (GM-114) |
|
||||
| SC-125 | New widget kinds have tests | renamed `Metric*` widgets tested (GM-111) |
|
||||
| SC-126 | No silent data migration | no auto-migrate of old-shape prometheus config; operator reconfigures (GM-113) |
|
||||
|
||||
### ADDED (3) — fresh canonical IDs continuing the SC- sequence
|
||||
|
||||
| Canonical ID | Header | GM source |
|
||||
|---|---|---|
|
||||
| SC-128 | get_prometheus_status validates the full gateway path | GM-110 |
|
||||
| SC-129 | Startup logs old-shape prometheus config without crashing | GM-113 (new behavior) |
|
||||
| SC-130 | Grafana is the sanctioned transport for the prometheus service | sanctioned-transport statement |
|
||||
|
||||
### PRESERVED (11) — unchanged in canonical; NOT in the delta
|
||||
|
||||
SC-106 (chart renderer reused), SC-108 (chart window preset), SC-110 (gauge threshold bands),
|
||||
SC-113 (mean plain PromQL), SC-117 (no grafana service type in registries), SC-118 (grafana status/UI
|
||||
removed), SC-119 (orphan degrade), SC-120 (grafana tests removed), SC-123 (backend tests pass),
|
||||
SC-124 (frontend typecheck/build/lint), SC-127 (non-blocking on service-storage-harness).
|
||||
|
||||
> **Count reconciliation:** 16 MODIFIED + 11 PRESERVED = 27 pre-existing requirements (SC-101 …
|
||||
> SC-127, all retained); + 3 ADDED (SC-128 … SC-130) = **30 total** in the canonical spec post-sync.
|
||||
|
||||
### REMOVED (0) · RENAMED (0)
|
||||
|
||||
No requirements were removed or renamed. RENAMED is intentionally unsupported by the native delta
|
||||
helper; the GM→SC mapping was resolved as ADDED/MODIFIED, never RENAMED.
|
||||
|
||||
## 5. Guardrails, approvals & destructive-sync assessment
|
||||
|
||||
- **Same-domain collisions:** none (`sameDomainActiveChanges: []`, `collisions: []`). No ordering
|
||||
decision was needed.
|
||||
- **Destructive sync:** This is a **non-additive** (MODIFIED-heavy) sync — 16 MODIFIED blocks, 0
|
||||
REMOVED. Per the sync contract, a destructive/large-MODIFIED sync requires explicit approval
|
||||
recorded in the parent prompt. **Approval is recorded:** the dispatch brief explicitly identifies
|
||||
this as "the project's first non-additive sync," enumerates the exact SC-xxx to modify (including
|
||||
the partial ones), and directs the MODIFIED/ADDED/PRESERVED split. No REMOVED requirements are
|
||||
used. Proceeding under that recorded approval.
|
||||
- **MODIFIED-block matching:** every MODIFIED block header matched the canonical spec **exactly**
|
||||
(verified by `grep` of all 16 headers pre-edit; all 16 replacements applied with zero header
|
||||
mismatches). No `## RENAMED Requirements` section was authored.
|
||||
- **Legacy flat spec:** the flat `spec.md` is intentionally **left in place** as the planning
|
||||
artifact the work was built against (archive convention keeps flat specs); the new domain delta
|
||||
sits alongside it under `specs/prometheus-charting/`.
|
||||
- **Other-domain isolation:** `openspec/specs/web-ui/spec.md` and `openspec/specs/service-storage/spec.md`
|
||||
were **not modified** (`git status --porcelain` empty for both).
|
||||
|
||||
## 6. Validation / checks performed (file-backed, read-only)
|
||||
|
||||
Run from `/home/user/manage` (no source edits, no test re-runs — owned by verify, already green):
|
||||
|
||||
| Check | Command | Result |
|
||||
|---|---|---|
|
||||
| Canonical requirement count | `grep -cE "^### Requirement: SC-"` | **30** ✓ (was 27; +3 ADDED) |
|
||||
| Canonical ID sequence intact | `grep -oE "SC-[0-9]+" \| sort -un` | SC-101 … SC-130, contiguous, no gaps/dupes ✓ |
|
||||
| MODIFIED headers all matched | 16 exact-header edits to canonical | all 19 edits applied (front-matter, Purpose, 16 bodies, append) with **zero header mismatches** ✓ |
|
||||
| No direct-Prom residue in canonical | `grep -c "api/v1/query_range"` canonical | **1** — and it is SC-101's intentional "MUST NOT issue any direct `GET /api/v1/query_range`" negation ✓ |
|
||||
| Preserved block integrity | spot-check SC-106/108/110/113/117/118/127 | preserved verbatim ✓ |
|
||||
| Delta is MODIFIED + ADDED only | count delta section headers | MODIFIED=1, ADDED=1, REMOVED=0, RENAMED=0 ✓ (no REMOVED → no destructive removal) |
|
||||
| Delta ADDED IDs are fresh | `grep "SC-12[89]\|SC-130"` delta | SC-128, SC-129, SC-130 ✓ (no GM- reuse in canonical) |
|
||||
| `web-ui` / `service-storage` untouched | `git status --porcelain openspec/specs/{web-ui,service-storage}` | empty ✓ |
|
||||
| Front-matter + Purpose consistent | re-read canonical head | transport narrative updated to gateway (no "no Grafana middleman" contradiction with SC-121/SC-130) ✓ |
|
||||
| Markdown validity | write-time lint | all three files clean ✓ |
|
||||
|
||||
## 7. Matching issues
|
||||
|
||||
**None.** All 16 MODIFIED block headers matched the canonical spec exactly; no fallback or fuzzy
|
||||
matching was required. The single `api/v1/query_range` occurrence in the canonical post-sync is the
|
||||
intentional negation inside SC-101, not a stale direct-Prom requirement.
|
||||
|
||||
## 8. Carry-over / residual notes for the archive summary
|
||||
|
||||
1. **[COSMETIC, non-blocking]** SC-106 (PRESERVED) still reads "preserved in the rebranded
|
||||
`PrometheusChartWidget`". This change renames that component to `MetricChartWidget` (GM-111), but
|
||||
SC-106 was explicitly listed as **PRESERVED** (not MODIFIED) in the change's "Canonical delta
|
||||
intent", so it was left verbatim. The *intent* (recharts renderer reused unchanged) remains true;
|
||||
only the component name in that one block is a cosmetic carry-over. A future change may refresh
|
||||
the name if desired.
|
||||
2. **[VERIFY carry-over, non-blocking for sync]** GM-115 was PARTIAL in verify on enumerated
|
||||
test-coverage only (no startup-validation test; no status 401/403 → `auth_failed` test). Functional
|
||||
code is correct; the dispatch brief treats this as closed/effectively-PASS. The new SC-128
|
||||
(status gateway path) and SC-129 (startup validation) requirements now canonicalize this behavior;
|
||||
`sdd-archive` may note the test-coverage gap.
|
||||
3. **[INFO]** `normalize_prometheus_matrix` is intentionally retained as dead production code
|
||||
(future-proof for a possible `direct_url` path); canonicalized by the MODIFIED SC-102.
|
||||
4. **[INFO]** Stale generated `.pi-map.md` artifacts still reference old `Prometheus*Widget` names;
|
||||
not deliverable source — regenerate at the orchestrator's convenience.
|
||||
5. **[INFO]** Two uncommitted whitespace-only edits exist in the working tree
|
||||
(`PrometheusMetricWidget.tsx`, `ServicesPage.tsx`) — unrelated to this sync; no files were staged
|
||||
by this phase (`git diff --cached` empty).
|
||||
|
||||
## 9. Next recommended phase
|
||||
|
||||
→ **`sdd-archive`** (clean). Re-scan the native status engine to confirm `specs: done` / `sync: ready`
|
||||
/ `archive: ready`, then move the change to
|
||||
`openspec/changes/archive/YYYY-MM-DD-grafana-metric-gateway`, carrying over the items in §8. Do
|
||||
**not** commit or push — the parent owns the commit with explicit paths.
|
||||
|
||||
---
|
||||
|
||||
### Appendix — Files written by this sync (OpenSpec only; no source code)
|
||||
|
||||
- `openspec/changes/grafana-metric-gateway/specs/prometheus-charting/spec.md` — **change-side domain
|
||||
delta** (`## MODIFIED Requirements` × 16 + `## ADDED Requirements` × 3).
|
||||
- `openspec/specs/prometheus-charting/spec.md` — **canonical spec** (MODIFIED × 16 in place, ADDED × 3
|
||||
appended; now 30 requirements SC-101 … SC-130; front-matter + Purpose updated for transport
|
||||
consistency).
|
||||
- `openspec/changes/grafana-metric-gateway/sync-report.md` — this report.
|
||||
@@ -0,0 +1,265 @@
|
||||
# SDD Tasks: Grafana Metric Gateway
|
||||
|
||||
**Change:** `grafana-metric-gateway`
|
||||
**Phase:** tasks
|
||||
**Date:** 2026-07-09
|
||||
|
||||
## Review Workload Forecast
|
||||
|
||||
| Field | Value |
|
||||
|-------|-------|
|
||||
| Estimated changed lines | ~500–660 (sum of two implementation slices) |
|
||||
| 400-line budget risk | Low–Medium |
|
||||
| Chained PRs recommended | Yes |
|
||||
| Suggested split | PR 1: backend config + adapter + frames normalizer + status + tests → PR 2: frontend widget renames + registry + barrel |
|
||||
| Delivery strategy | auto-chain |
|
||||
| Chain strategy | stacked-to-main |
|
||||
|
||||
```text
|
||||
Decision needed before apply: No
|
||||
Chained PRs recommended: Yes
|
||||
Chain strategy: stacked-to-main
|
||||
400-line budget risk: Low–Medium
|
||||
```
|
||||
|
||||
> Each slice individually lands under the 400-line review budget. Slices are ordered S1 → S2; S1 is independently shippable (backend works with gateway path, frontend just has stale `Prometheus*` names until S2). Per `openspec/config.yaml` rules, each slice leaves `npm run build` (tsc -b + vite build), `npm run lint`, and backend `pytest` green.
|
||||
|
||||
---
|
||||
|
||||
## Slice ordering rationale (critical)
|
||||
|
||||
**Slice 1 changes the backend transport from direct Prom to Grafana gateway.** After S1:
|
||||
|
||||
- `prometheus` service config uses `grafana_url`/`datasource_uid` + `grafana_api_key` secret (no `base_url`).
|
||||
- `MetricSource` (renamed from `PrometheusWidgetSource`) queries `POST {grafana_url}/api/ds/query`.
|
||||
- `normalize_grafana_frames` is restored and shared with `normalize_prometheus_matrix` via `_dedup_label`.
|
||||
- `get_prometheus_status` validates the gateway path.
|
||||
- Startup warns about old-shape config.
|
||||
- All backend tests are updated to assert `/api/ds/query` POST + frames mock (NOT direct Prom GET).
|
||||
- Frontend widget files still carry `Prometheus*` names — that's fine; they still work (the KIND strings `chart`/`gauge`/`mean`/`metric` are unchanged, only the transport under the hood changes).
|
||||
|
||||
**Slice 2 renames the three frontend widgets to neutral `Metric*`** via `git mv` (history-preserving) and updates registry/barrel references. Pure rename; no rendering change. `PrometheusMetricWidget` is NOT renamed (the `metric` kind stays — proposal only names Chart/Gauge/Mean).
|
||||
|
||||
This ordering ensures the transport change is proven (backend tests green) before any frontend churn, so the two risks (gateway transport + widget rename) never compound in a single slice.
|
||||
|
||||
---
|
||||
|
||||
## Slice 1: Backend gateway transport + frames normalizer + status + tests
|
||||
|
||||
**Goal:** Route all `prometheus` widget queries through Grafana `/api/ds/query` instead of direct Prom HTTP. Restore the frames→series normalizer (from git `65bae95`) into the shared helper module. Update status check, startup validation, CHANGELOG, and all affected backend tests.
|
||||
|
||||
**Satisfies:** GM-101, GM-102, GM-103, GM-104, GM-105, GM-106, GM-107, GM-108, GM-109, GM-110, GM-113, GM-114, GM-115.
|
||||
|
||||
- [x] **1.1 Update `PrometheusConfig` to gateway fields (GM-101)**
|
||||
- Files: `backend/src/media_library_viewer_api/integrations/prometheus.py` (modify)
|
||||
- Lines: ~15
|
||||
- Dependencies: none
|
||||
- Details: In `PrometheusConfig`, remove `base_url: ServiceBaseUrl`; add `grafana_url: ServiceBaseUrl` and `datasource_uid: str = "prometheus"`. Keep `timeout_seconds: int = 10`. In the `DEFINITION.secret_fields`, replace the existing optional `api_key` secret with `SecretField(key="grafana_api_key", label="Grafana API key", required=True, helper="Service account token or API key for the Grafana gateway")`. Widget config models (`PrometheusChartWidgetConfig`, `PrometheusGaugeWidgetConfig`, `PrometheusMeanWidgetConfig`, `PrometheusMetricWidgetConfig`) are UNCHANGED.
|
||||
|
||||
- [x] **1.2 Add `normalize_grafana_frames` + shared `_dedup_label` helper (GM-104)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/prometheus_range.py` (modify)
|
||||
- Lines: ~80
|
||||
- Dependencies: none
|
||||
- Details: Recover the frames→series normalizer from git commit `65bae95` (`GrafanaWidgetSource._fetch_chart`'s normalization block). Refactor into a standalone `normalize_grafana_frames(raw: dict[str, Any]) -> list[dict[str, Any]]` that parses `results.<refId>.frames[]` (each frame has `data.values` = `[[timestamps...], [values...]]` + `schema.fields` with `config.displayName` / `labels` / `name`). Label rule: prefer `config.displayName`; else sorted `k=v` from Prometheus labels (excluding `__`-prefixed); else field name; else `"value"`. Extract the dedup suffix logic (`seen` dict + `" (n)"`) into a private `_dedup_label(label: str, seen: dict[str, int]) -> str` shared by BOTH `normalize_grafana_frames` and `normalize_prometheus_matrix` (refactor the latter to call it — GM-104 "dedup logic is not copy-pasted"). Null handling: `None`/`"NaN"`/`"+Inf"`/`"-Inf"` → `v: None`. Keep `normalize_prometheus_matrix` in the module (design decision 5: dead code after this change but harmless + future-proof).
|
||||
|
||||
- [x] **1.3 Add backend unit tests for `normalize_grafana_frames` + `_dedup_label`**
|
||||
- Files: `backend/tests/test_prometheus_range.py` (modify)
|
||||
- Lines: ~80
|
||||
- Dependencies: 1.2
|
||||
- Details: Add tests: (a) single frame with timestamps `[1000, 2000]` and values `[1.5, 2.5]` → `[{"label": ..., "points": [{"t": 1000, "v": 1.5}, {"t": 2000, "v": 2.5}]}]`; (b) label fallback chain — displayName takes priority; else sorted `k=v` labels; else `"value"`; (c) dedup — two frames producing the same label → second gets `" (1)"` suffix; (d) NaN/null handling. Existing `normalize_prometheus_matrix` tests stay green (they now route through `_dedup_label`).
|
||||
|
||||
- [x] **1.4 Rename `PrometheusWidgetSource` → `MetricSource` + add `_gateway_query` (GM-102)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/sources.py` (modify)
|
||||
- Lines: ~90
|
||||
- Dependencies: 1.2
|
||||
- Details: Rename class `PrometheusWidgetSource` → `MetricSource`. Update `SERVICE_ADAPTERS["prometheus"] = MetricSource()`. Add import of `normalize_grafana_frames` from `prometheus_range`. Add a new `_gateway_query(self, grafana_url: str, api_key: str, datasource_uid: str, timeout: int, promql: str, window_seconds: int | None = None, max_data_points: int = 200) -> dict[str, Any]` that: builds the `/api/ds/query` POST body (queries array with `datasource: {uid, type: "prometheus"}`, `expr`, `format: "time_series"`, `intervalMs = step * 1000`, `maxDataPoints`, `refId: "A"`; plus `from`/`to` — `window_seconds=None` → instant mapping `from=now-1m, to=now, maxDataPoints=1`; `window_seconds=<N>` → `from=now-{N}s, to=now`); sets `Authorization: Bearer {api_key}` header; runs `requests.post` via `asyncio.wait_for(asyncio.to_thread(...), timeout=timeout)`; catches `asyncio.TimeoutError` → `{"error": "Grafana query timed out"}`, `requests.RequestException` → `{"error": f"Grafana query failed: {exc}"}`; on success returns the raw Grafana JSON dict. The `.fetch()` method extracts `grafana_url`, `grafana_api_key`, `datasource_uid`, `timeout` from the `ServiceRecord` and dispatches per kind (1.5–1.8). Errors never raise (GM-103).
|
||||
|
||||
- [x] **1.5 Rewrite `_fetch_chart` to use gateway (GM-106)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/sources.py` (modify, same file as 1.4)
|
||||
- Lines: ~10 (within the ~90 of 1.4)
|
||||
- Dependencies: 1.4
|
||||
- Details: `_fetch_chart` now calls `_gateway_query(..., window_seconds=WINDOW_PRESETS[window])`, then `normalize_grafana_frames(raw)` → `{"series": series}`. Reuses `WINDOW_PRESETS` + `step_for_window` (unchanged). Errors propagate as `{"error": ...}`.
|
||||
|
||||
- [x] **1.6 Rewrite `_fetch_gauge` to use gateway (GM-107)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/sources.py` (modify, same file)
|
||||
- Lines: ~10 (within the ~90 of 1.4)
|
||||
- Dependencies: 1.4
|
||||
- Details: `_fetch_gauge` calls `_gateway_query(..., window_seconds=None)` (instant), normalizes via `normalize_grafana_frames`, enforces scalar-only (`len(series) != 1` → `{"error": "Gauge requires a single-series query; refine your PromQL"}`), extracts `points[-1]["v"]` as the latest scalar, returns `{"value", "warn_at", "crit_at", "min", "max", "unit"}` from config. Null value → `{"error": ...}`.
|
||||
|
||||
- [x] **1.7 Rewrite `_fetch_mean` to use gateway (GM-108)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/sources.py` (modify, same file)
|
||||
- Lines: ~10 (within the ~90 of 1.4)
|
||||
- Dependencies: 1.4
|
||||
- Details: `_fetch_mean` calls `_gateway_query(..., window_seconds=WINDOW_PRESETS[window])`, normalizes, enforces scalar-only, averages all non-null `points[*]["v"]` of the single series, returns `{"value": mean, "unit": config.get("unit")}`. Empty nums → `{"error": "Mean query returned no numeric samples in the window"}`.
|
||||
|
||||
- [x] **1.8 Rewrite `_fetch_metric` (instant) to use gateway (GM-109)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/sources.py` (modify, same file)
|
||||
- Lines: ~10 (within the ~90 of 1.4)
|
||||
- Dependencies: 1.4
|
||||
- Details: Replace the old `_instant_query` path. `_fetch_metric` calls `_gateway_query(..., window_seconds=None)`, normalizes via `normalize_grafana_frames`, returns `{"result": series}` (array of `{label, points}`). The frontend `PrometheusMetricWidget` adapts to this shape in Slice 2 (design §3.4 Option A) OR — if the adaptation proves too large for S2 — return a Prom-compatible shape as fallback (design Option B). Decide during apply based on the component's parsing surface.
|
||||
|
||||
- [x] **1.9 Remove dead direct-Prom code (`_range_query`, `_instant_query`)**
|
||||
- Files: `backend/src/media_library_viewer_api/widgets/sources.py` (modify, same file)
|
||||
- Lines: ~−50 (deletions)
|
||||
- Dependencies: 1.4–1.8
|
||||
- Details: Delete the now-unused `_range_query` and `_instant_query` private methods (they hit direct Prom `/api/v1/query[_range]`). The import of `normalize_prometheus_matrix` stays (design decision 5: kept as future-proof dead code; still imported harmlessly). Verify `grep -n "/api/v1/query" backend/src/media_library_viewer_api/widgets/sources.py` returns nothing (GM-102 "no direct Prom HTTP call").
|
||||
|
||||
- [x] **1.10 Rewrite `get_prometheus_status` for gateway path (GM-110)**
|
||||
- Files: `backend/src/media_library_viewer_api/routers/monitoring.py` (modify)
|
||||
- Lines: ~30
|
||||
- Dependencies: 1.4
|
||||
- Details: Replace the two direct-Prom HTTP calls (`/-/healthy` + `/api/v1/status/buildinfo`) with a single gateway POST: `POST {grafana_url}/api/ds/query` with body `{"queries": [{"datasource": {"uid": datasource_uid, "type": "prometheus"}, "expr": "up", "format": "time_series", "intervalMs": 15000, "maxDataPoints": 1, "refId": "A"}], "from": "now-1m", "to": "now"}` + `Authorization: Bearer {grafana_api_key}`. Read `grafana_url`/`grafana_api_key`/`datasource_uid`/`timeout_seconds` from the service record directly (do NOT modify the shared `_base_url`/`_auth_headers`/`_timeout` helpers — they still serve alertmanager). Error mapping: 401/403 → `error="auth_failed"`; `requests.RequestException` → `error="prometheus_unreachable"`; other non-2xx → `error="gateway_error"`. Success → `_status_response(service, version="ok")` (spec assumption #2). Missing gateway config → `error="gateway_not_configured"`.
|
||||
|
||||
- [x] **1.11 Add startup validation for old-shape prometheus config (GM-113)**
|
||||
- Files: `backend/src/media_library_viewer_api/main.py` (modify)
|
||||
- Lines: ~15
|
||||
- Dependencies: none
|
||||
- Details: Add a `_validate_prometheus_gateway_config(store: SettingsStore) -> None` helper that iterates `store.list_services("prometheus")` and, for each service whose `config` contains `"base_url"` but not `"grafana_url"`, logs a `logger.warning(...)` naming the service + id + migration instruction. Call it from `lifespan` after `ensure_defaults()`. MUST NOT crash startup (GM-113).
|
||||
|
||||
- [x] **1.12 Add CHANGELOG migration note (GM-114)**
|
||||
- Files: `CHANGELOG.md` (modify)
|
||||
- Lines: ~5
|
||||
- Dependencies: none
|
||||
- Details: Add `[Unreleased]` entry marked **BREAKING**: `prometheus` service instances must be reconfigured — replace `base_url` with `grafana_url`, add the `grafana_api_key` secret, optionally set `datasource_uid`. Metric widgets now query through Grafana's `/api/ds/query`.
|
||||
|
||||
- [x] **1.13 Update backend adapter tests for gateway POST + frames mock (GM-115)**
|
||||
- Files: `backend/tests/test_widgets.py` (modify)
|
||||
- Lines: ~80
|
||||
- Dependencies: 1.4–1.8
|
||||
- Details: Existing chart/gauge/mean adapter tests currently mock `GET /api/v1/query_range` or `/api/v1/query` and assert Prom matrix/vector shapes. Rewrite to mock `POST /api/ds/query` and return a Grafana frames-shaped response. The `ServiceRecord` mock changes from `{config: {base_url, timeout_seconds}, secrets: {api_key}}` to `{config: {grafana_url, datasource_uid, timeout_seconds}, secrets: {grafana_api_key}}`. Output assertions (`{series}` / `{value}`) stay the same — only the transport mock + input shape change. Scalar-only enforcement tests for gauge/mean stay. Error tests (timeout, 401) update to assert gateway-specific messages.
|
||||
|
||||
- [x] **1.14 Update `get_prometheus_status` test (GM-115)**
|
||||
- Files: `backend/tests/test_api.py` (modify)
|
||||
- Lines: ~20
|
||||
- Dependencies: 1.10
|
||||
- Details: The existing `TestPrometheusStatus` tests mock `GET /-/healthy` + `GET /api/v1/status/buildinfo`. Rewrite to mock `POST /api/ds/query` with `expr: "up"`. Assert `{up: true, version: "ok"}` on success, `{up: false, error: "auth_failed"}` on 401, `{up: false, error: "prometheus_unreachable"}` on connection error.
|
||||
|
||||
- [x] **1.15 Update prometheus service config schema test (GM-101)**
|
||||
- Files: `backend/tests/test_services.py` (modify)
|
||||
- Lines: ~10
|
||||
- Dependencies: 1.1
|
||||
- Details: The existing test that creates a prometheus service uses `{base_url: "http://prom:9090"}`. Update to `{grafana_url: "http://grafana:3000", datasource_uid: "prometheus"}` + secret `grafana_api_key`. Assert the service-type info exposes `grafana_url`/`datasource_uid` config fields and `grafana_api_key` secret field (not `base_url`/`api_key`).
|
||||
|
||||
- [x] **1.16 Verify Slice 1 (pytest + ruff + frontend still builds)**
|
||||
- Run: `cd backend && PYTHONPATH=src python3 -m pytest -q && PYTHONPATH=src python3 -m ruff check src tests`
|
||||
- Run: `cd frontend && npm run build && npm run lint`
|
||||
- Verify: all backend tests pass (adapter tests assert gateway POST, not direct Prom); ruff clean; frontend still builds + lints (no frontend change yet, so this is a regression check only).
|
||||
- **Risk flag:** existing chart/gauge/mean adapter tests MUST be updated (1.13) — they will fail if left asserting direct Prom. This is the riskiest item in Slice 1.
|
||||
- **Risk flag:** the qBit widgets (`QbittorrentSpeedWidget`, `QbittorrentActiveTorrentsWidget`, `QbittorrentTotalsWidget`) must stay green — they do NOT use `PrometheusWidgetSource`/`MetricSource`; `QbittorrentSpeedWidget` uses `LineSeriesChart` which is preserved untouched. Verify the qBit widget tests pass unchanged.
|
||||
|
||||
**Slice 1 total:** ~300–380 changed lines.
|
||||
|
||||
---
|
||||
|
||||
## Slice 2: Frontend widget renames to neutral Metric*
|
||||
|
||||
**Goal:** Rename `PrometheusChartWidget` → `MetricChartWidget`, `PrometheusGaugeWidget` → `MetricGaugeWidget`, `PrometheusMeanWidget` → `MetricMeanWidget` via `git mv` (history-preserving). Update registry imports, barrel exports, and any component references. `PrometheusMetricWidget` is NOT renamed. If design §3.4 Option A applies, adapt `PrometheusMetricWidget` for the normalized series shape returned by the gateway.
|
||||
|
||||
**Satisfies:** GM-111, GM-112, GM-116.
|
||||
|
||||
- [x] **2.1 `git mv` chart widget + rename export (GM-111)**
|
||||
- Files: `frontend/src/widgets/PrometheusChartWidget.tsx` → `frontend/src/widgets/MetricChartWidget.tsx` (git mv)
|
||||
- Lines: ~3 changed (rename export + import in self)
|
||||
- Dependencies: Slice 1 (1.4)
|
||||
- Details: `git mv` to preserve history. Rename exported function `PrometheusChartWidget` → `MetricChartWidget`. The rendering code (`LineSeriesChart`, `useWidgetData`, `SectionCard`, loading/error/empty states) is preserved UNCHANGED (GM-111 "rendering code preserved").
|
||||
|
||||
- [x] **2.2 `git mv` chart widget test + update import (GM-116)**
|
||||
- Files: `frontend/src/widgets/__tests__/PrometheusChartWidget.test.tsx` → `frontend/src/widgets/__tests__/MetricChartWidget.test.tsx` (git mv)
|
||||
- Lines: ~5 changed (import path, component name, describe label)
|
||||
- Dependencies: 2.1
|
||||
- Details: `git mv`. Update import to `MetricChartWidget` from `../MetricChartWidget`. Update `describe` label + component references. Test cases (loading skeleton, chart with series data, error alert, empty state) are preserved.
|
||||
|
||||
- [x] **2.3 `git mv` gauge widget + rename export (GM-111)**
|
||||
- Files: `frontend/src/widgets/PrometheusGaugeWidget.tsx` → `frontend/src/widgets/MetricGaugeWidget.tsx` (git mv)
|
||||
- Lines: ~3 changed
|
||||
- Dependencies: Slice 1 (1.4)
|
||||
- Details: `git mv`. Rename export `PrometheusGaugeWidget` → `MetricGaugeWidget`. Rendering (recharts `RadialBarChart`, threshold bands, `toPercent`, `formatValue`) preserved UNCHANGED.
|
||||
|
||||
- [x] **2.4 `git mv` gauge widget test + update import (GM-116)**
|
||||
- Files: `frontend/src/widgets/__tests__/PrometheusGaugeWidget.test.tsx` → `frontend/src/widgets/__tests__/MetricGaugeWidget.test.tsx` (git mv)
|
||||
- Lines: ~5 changed
|
||||
- Dependencies: 2.3
|
||||
- Details: `git mv`. Update import + describe label + component refs. Test cases (loading, with/without bands, error, empty) preserved.
|
||||
|
||||
- [x] **2.5 `git mv` mean widget + rename export (GM-111)**
|
||||
- Files: `frontend/src/widgets/PrometheusMeanWidget.tsx` → `frontend/src/widgets/MetricMeanWidget.tsx` (git mv)
|
||||
- Lines: ~3 changed
|
||||
- Dependencies: Slice 1 (1.4)
|
||||
- Details: `git mv`. Rename export `PrometheusMeanWidget` → `MetricMeanWidget`. Rendering (`formatMean`, `MetricCard`-style display, unit support) preserved UNCHANGED.
|
||||
|
||||
- [x] **2.6 `git mv` mean widget test + update import (GM-116)**
|
||||
- Files: `frontend/src/widgets/__tests__/PrometheusMeanWidget.test.tsx` → `frontend/src/widgets/__tests__/MetricMeanWidget.test.tsx` (git mv)
|
||||
- Lines: ~5 changed
|
||||
- Dependencies: 2.5
|
||||
- Details: `git mv`. Update import + describe label + component refs. Test cases (loading, data display, error, empty) preserved.
|
||||
|
||||
- [x] **2.7 Update registry imports + component refs (GM-112)**
|
||||
- Files: `frontend/src/integrations/registry.ts` (modify)
|
||||
- Lines: ~10
|
||||
- Dependencies: 2.1, 2.3, 2.5
|
||||
- Details: Change imports: `import { MetricChartWidget } from "../widgets/MetricChartWidget"` (was `PrometheusChartWidget`), same for Gauge + Mean. `PrometheusMetricWidget` import stays. Update the three `component:` refs in the `prometheus` binding's widgets array (chart → `MetricChartWidget`, gauge → `MetricGaugeWidget`, mean → `MetricMeanWidget`). Widget KIND strings (`"chart"`, `"gauge"`, `"mean"`, `"metric"`) MUST NOT change (persisted in widget instance rows).
|
||||
|
||||
- [x] **2.8 Update barrel exports (GM-111)**
|
||||
- Files: `frontend/src/widgets/index.ts` (modify)
|
||||
- Lines: ~3
|
||||
- Dependencies: 2.1, 2.3, 2.5
|
||||
- Details: Change three exports: `export { MetricChartWidget } from "./MetricChartWidget"` (was Prometheus), same for Gauge + Mean. `PrometheusMetricWidget` export stays.
|
||||
|
||||
- [x] **2.9 Adapt `PrometheusMetricWidget` for normalized series shape (if needed)**
|
||||
- Files: `frontend/src/widgets/PrometheusMetricWidget.tsx` (modify, NOT renamed)
|
||||
- Lines: ~15–25 (depends on whether Option A or B from design §3.4)
|
||||
- Dependencies: Slice 1 (1.8)
|
||||
- Details: After Slice 1, `_fetch_metric` returns `{"result": [{label, points}]}` (normalized Grafana series). The component currently parses Prom `{resultType, result: [{metric, value}]}` vector shape. Adapt the rendering to read the last point of each series in `data.result`. Reuse `formatPrometheusValue` for scalar formatting. If the adaptation exceeds ~25 lines, fall back to design Option B (backend returns Prom-compatible raw shape) and note the deviation. **Decision point during apply.**
|
||||
|
||||
- [x] **2.10 Grep-verify no stale `Prometheus*Widget` references (GM-111)**
|
||||
- Run: `grep -rn "PrometheusChartWidget\|PrometheusGaugeWidget\|PrometheusMeanWidget" frontend/src`
|
||||
- Verify: returns no matches (only `PrometheusMetricWidget` is allowed to remain).
|
||||
- **Risk flag:** this grep MUST pass before the slice is complete. If stale imports remain (e.g. in `Dashboard.tsx`, `WidgetConfigDialog.tsx`, or any other consumer), update them.
|
||||
|
||||
- [x] **2.11 Verify Slice 2 (build + lint + test)**
|
||||
- Run: `cd frontend && npm run build && npm run lint && npx vitest run`
|
||||
- Run: `cd backend && PYTHONPATH=src python3 -m pytest -q` (regression: Slice 1 tests still pass)
|
||||
- Verify: frontend typechecks + builds (renamed components resolve); lint 0 errors; vitest passes (renamed tests + `PrometheusMetricWidget` test if adapted in 2.9); backend still green.
|
||||
- **Risk flag:** qBit widget tests must stay green — `QbittorrentSpeedWidget` imports `LineSeriesChart` (unchanged), NOT any `Metric*` or `Prometheus*` widget. Confirm.
|
||||
|
||||
**Slice 2 total:** ~200–280 changed lines.
|
||||
|
||||
---
|
||||
|
||||
## Integration verification (post-slice)
|
||||
|
||||
- [x] **3.1 Full backend test run**
|
||||
- Run: `cd backend && PYTHONPATH=src python3 -m pytest -q`
|
||||
- Verify: all tests pass (no direct-Prom HTTP assertions remain).
|
||||
|
||||
- [x] **3.2 Full frontend build + lint + test**
|
||||
- Run: `cd frontend && npm run build && npm run lint && npx vitest run`
|
||||
- Verify: 0 errors; all widget tests pass including renamed `Metric*` + `PrometheusMetricWidget` + qBit widgets.
|
||||
|
||||
- [x] **3.3 Grep-verify no direct Prom HTTP in backend source**
|
||||
- Run: `grep -rn "/api/v1/query" backend/src/media_library_viewer_api/widgets/sources.py`
|
||||
- Verify: no matches (GM-102 "no direct Prom HTTP call").
|
||||
|
||||
- [x] **3.4 Grep-verify no stale Prometheus*Widget names (Chart/Gauge/Mean only)**
|
||||
- Run: `grep -rn "PrometheusChartWidget\|PrometheusGaugeWidget\|PrometheusMeanWidget" frontend/src`
|
||||
- Verify: no matches (GM-111).
|
||||
|
||||
- [x] **3.5 config.yaml accuracy check**
|
||||
- Verify: `openspec/config.yaml` still reflects the post-Change-A reality (Grafana as gateway transport is consistent with "Manage renders Prometheus-backed metrics via recharts"; the gateway is a transport detail, not a re-introduction of Grafana as a service type). If wording needs a small adjustment for clarity, note it — but do NOT revert the thin-dashboard rule.
|
||||
|
||||
- [x] **3.6 CHANGELOG check**
|
||||
- Verify: `CHANGELOG.md` `[Unreleased]` has the BREAKING entry naming `grafana_url`, `grafana_api_key`, `datasource_uid` (GM-114).
|
||||
|
||||
---
|
||||
|
||||
## Risk flags summary
|
||||
|
||||
1. **(a) Slice 1 adapter tests must be updated (task 1.13).** The existing chart/gauge/mean tests assert direct Prom `GET /api/v1/query[_range]`. If left unchanged they will fail. The rewrite asserts `POST /api/ds/query` with a Grafana frames mock. This is the riskiest item — if the frames mock shape doesn't match a real Grafana `/api/ds/query` response, the tests pass but production breaks. Mitigation: recover the exact response-handling code from `65bae95` (task 1.2) so the mock matches what the recovered normalizer expects.
|
||||
|
||||
2. **(b) Slice 2 `git mv` must update ALL references (task 2.10).** Any stale import of `PrometheusChartWidget`/`PrometheusGaugeWidget`/`PrometheusMeanWidget` will break the build. The grep in task 2.10 catches this. Known consumers: `registry.ts` (2.7), `index.ts` (2.8). Verify `Dashboard.tsx`, `WidgetConfigDialog.tsx`, `WidgetInstance.tsx`, and any service-tab references don't import the widget components directly (they resolve via the registry).
|
||||
|
||||
3. **(c) `PrometheusMetricWidget` shape adaptation (task 2.9).** Design §3.4 Option A may require up to ~25 lines of frontend change. If it proves larger, fall back to Option B (backend returns Prom-compatible raw shape). Decide during apply.
|
||||
|
||||
4. **(d) qBit widgets must stay green.** `QbittorrentSpeedWidget` uses `LineSeriesChart` (the shared renderer extracted in `service-storage-harness` Slice 2). This change does NOT touch `LineSeriesChart`. Verify qBit widget tests pass unchanged in both slices.
|
||||
|
||||
5. **(e) First non-additive canonical sync.** The `prometheus-charting` canonical domain's transport-related SC- requirements are MODIFIED by this change. The sync phase (`sdd-sync`) must author `## MODIFIED Requirements` deltas, not just `## ADDED`. Spec §"Canonical delta intent" maps every GM→SC. This is flagged for the sync phase, not the apply slices.
|
||||
@@ -0,0 +1,271 @@
|
||||
# Verify Report — grafana-metric-gateway
|
||||
|
||||
> Phase: **verify** · Change: `grafana-metric-gateway` · Repo: `/home/user/manage`
|
||||
> FRESH-CONTEXT adversarial read-only verification of the change against
|
||||
> `proposal.md`, `spec.md`, `design.md`, and `tasks.md`. **No source edits.**
|
||||
> This verify report is the only file written.
|
||||
|
||||
**Head commit verified:** `7e91e7f` (`feat(grafana-metric-gateway): slice 2 — rename widgets to Metric*`).
|
||||
|
||||
Two implementation slices are committed:
|
||||
|
||||
- `df80c68` slice 1 — backend gateway transport + `normalize_grafana_frames` + `MetricSource` adapter + status + validation + CHANGELOG
|
||||
- `7e91e7f` slice 2 — frontend widget renames
|
||||
|
||||
> NOTE: the dispatch brief cited slice hashes `f955ff2` / `7e91e7f`. The actual
|
||||
> landed slice-1 commit is `df80c68` (not `f955ff2`); slice-2 `7e91e7f` matches.
|
||||
> Content of both slices matches the spec/design/tasks; this is informational, not a defect.
|
||||
|
||||
---
|
||||
|
||||
## 0. Executive summary / verdict
|
||||
|
||||
**VERDICT: PASS — implementation complete and green; archive BLOCKED on a
|
||||
task-hygiene / missing-`apply-progress` issue (reconcilable without code).**
|
||||
|
||||
Every functional requirement **GM-101 … GM-116** was checked against source.
|
||||
All metric queries route through Grafana `POST {grafana_url}/api/ds/query` —
|
||||
**zero** direct Prometheus `GET /api/v1/query[_range]` calls remain in
|
||||
`widgets/sources.py` (confirmed by grep). The config schema migrated
|
||||
(`base_url`/`api_key` → `grafana_url`/`datasource_uid`/`grafana_api_key`); the
|
||||
adapter (`MetricSource`, service key `"prometheus"` unchanged) handles all four
|
||||
kinds (`chart`/`gauge`/`mean`/`metric`) via one `_gateway_query` transport;
|
||||
`normalize_grafana_frames` is restored and shares `_dedup_label` with the
|
||||
retained `normalize_prometheus_matrix`; `get_prometheus_status` probes the
|
||||
gateway with `expr: "up"`; startup logs (does not crash on) old-shape config;
|
||||
CHANGELOG carries the BREAKING migration note; the three frontend widgets are
|
||||
renamed `Metric*` via `git mv` (history preserved) and bound in the registry.
|
||||
qBit widgets are untouched and green. All four gates are green: backend
|
||||
`pytest` (**331 passed**), `ruff` (**clean**), frontend `npm run build`
|
||||
(**exit 0**), `npm run lint` (**0 errors**), `npx vitest run` (**151 passed / 44 files**).
|
||||
|
||||
Findings:
|
||||
|
||||
- **[CRITICAL — archive blocker, NOT a code defect]** **33 unchecked task
|
||||
checkboxes** remain in `tasks.md` (all of Slice 1 §1.1–1.16, Slice 2 §2.1–2.11,
|
||||
and Integration §3.1–3.6), and **`apply-progress.md` does not exist** to
|
||||
reconcile them. The underlying work *is* done and verified complete against
|
||||
source; the blocker is that the task tracker was never ticked and no
|
||||
apply-progress artifact was produced. Reconciliation = tick the boxes + write
|
||||
`apply-progress.md` (no code change). See §4.
|
||||
- **[WARNING]** **GM-115 is PARTIAL**: GM-115's enumerated coverage list
|
||||
explicitly requires "the startup old-config validation" test, which **does not
|
||||
exist**. The status check also lacks an explicit **auth_failed (401/403)**
|
||||
scenario test (GM-110 lists that scenario). The code paths exist and are
|
||||
correct; the gap is test coverage, not functionality. See §5.
|
||||
- **[INFO]** `normalize_prometheus_matrix` is now **dead code** in production
|
||||
(no active caller in `src/` besides its own definition + the `# noqa` import).
|
||||
This is **intentional** (design decision 5 — kept as future-proof + tested);
|
||||
qBit builds its series inline. Not a defect, documented for maintainers.
|
||||
- **[INFO]** Stale generated `.pi-map.md`/`.pi-map.index.md` artifacts still
|
||||
reference the old `PrometheusChartWidget`/`Gauge`/`Mean` names; these are not
|
||||
deliverable source (ignored by the build) and should be regenerated
|
||||
(`project_map_patch`/`validate`).
|
||||
- **[INFO]** Working tree has 2 uncommitted **whitespace-only** modifications
|
||||
(`PrometheusMetricWidget.tsx`, `ServicesPage.tsx` — one indentation line each,
|
||||
unrelated to the change substance). **No files are staged** (`git diff --cached` empty).
|
||||
|
||||
---
|
||||
|
||||
## 1. Structured status & actionContext findings
|
||||
|
||||
The native `gentle-pi.sdd-status` reports `changeName: null` /
|
||||
`blockedReasons: ["Change selection is ambiguous: grafana-metric-gateway,
|
||||
per-instance-hook-scoping, service-credential-tester."]` because the engine
|
||||
auto-detected three active changes. This verify task was **explicitly assigned**
|
||||
`grafana-metric-gateway`, so the ambiguity is a dispatch artifact, not a real
|
||||
blocker for this verification.
|
||||
|
||||
- `actionContext.mode: repo-local`; `workspaceRoot`/`allowedEditRoots` =
|
||||
`/home/user/manage`. All implementation files live under that root. ✓
|
||||
- `artifactStore: openspec`; `isNonAuthoritative: false`. The change dir exists
|
||||
with `proposal.md`, `spec.md`, `design.md`, `tasks.md` (this verify report is
|
||||
the 5th artifact). `apply-progress.md` is **missing** (CRITICAL — §4).
|
||||
- `dependencies.verify: blocked` (from the auto-detected ambiguity) is a false
|
||||
positive for this assigned change; verification proceeded.
|
||||
|
||||
---
|
||||
|
||||
## 2. Per-requirement verdict table (GM-101 … GM-116)
|
||||
|
||||
| GM-id | Requirement | Verdict | Evidence |
|
||||
|---|---|---|---|
|
||||
| **GM-101** | Config points at Grafana gateway | **PASS** | `prometheus.py` `PrometheusConfig`: `grafana_url: ServiceBaseUrl`, `datasource_uid: str = "prometheus"`, `timeout_seconds: int = 10`; no `base_url`. `DEFINITION.secret_fields` = `[SecretField(key="grafana_api_key", required=True)]`, no `api_key`. Tests: `test_services.py:120` (`"grafana_url" in schema`), `:185` (`secret_fields == ["grafana_api_key"]`), `:295` (`model_validate({"grafana_url": bad_url})`). |
|
||||
| **GM-102** | All queries via Grafana `/api/ds/query` | **PASS** | `sources.py` `MetricSource._gateway_query` POSTs `{grafana_url}/api/ds/query` for all 4 kinds; body has `queries[0].{datasource:{uid,type:"prometheus"},expr,format:"time_series",intervalMs,maxDataPoints,refId:"A"}` + `from`/`to`; header `Authorization: Bearer {api_key}`. `grep "/api/v1/query" sources.py` → **NONE**. `SERVICE_ADAPTERS["prometheus"]=MetricSource()`. Tests assert `call.args[0].endswith("/api/ds/query")`. |
|
||||
| **GM-103** | Gateway errors degrade gracefully | **PASS** | `_gateway_query` catches `asyncio.TimeoutError`→`{"error":"Grafana query timed out"}`, `requests.RequestException`→`{"error":f"Grafana query failed: {exc}"}`; outer `fetch` catches everything→`{"error":...}`. Never raises. The `{exc}` string carries HTTP status for auth distinction; status path (GM-110) maps `auth_failed` explicitly. |
|
||||
| **GM-104** | Frames normalizer restored + shared | **PASS** | `prometheus_range.py` has `normalize_grafana_frames(raw)` parsing `results.<refId>.frames[].{data.values,schema.fields}`; `normalize_prometheus_matrix` retained. Both call the shared private `_dedup_label(label, seen)`. Tests: label fallback chain (displayName→labels→"value"), dedup, NaN, insufficient-values skip. |
|
||||
| **GM-105** | Window presets → from/to + intervalMs | **PASS** | `WINDOW_PRESETS`+`step_for_window` reused. `_gateway_query`: `from=f"now-{N}s"`, `to="now"`, `intervalMs=step*1000`, `maxDataPoints=200` (clamped band). Users do not set from/to/step directly. |
|
||||
| **GM-106** | Chart multi-series via gateway | **PASS** | `_fetch_chart`→`_gateway_query(window)`→`normalize_grafana_frames`→`{"series":[...]}`. No single-series restriction. `MetricChartWidget` renders `LineSeriesChart`. Test `GM-106` (test_widgets.py:473) asserts 2-series `{series}`. |
|
||||
| **GM-107** | Gauge instant scalar via gateway | **PASS** | `_fetch_gauge`→`_gateway_query(window=None)`→normalize; scalar-only (`len!=1`→error, `None` value→error)→`{value,warn_at,crit_at,min,max,unit}`. `MetricGaugeWidget` renders threshold bands. |
|
||||
| **GM-108** | Mean over gateway range window | **PASS** | `_fetch_mean`→`_gateway_query(window)`→normalize; scalar-only; averages non-null points→`{value,unit}`; empty→error. |
|
||||
| **GM-109** | Metric instant scalar via gateway | **PASS** | `_fetch_metric`→`_gateway_query(window=None)`→`{"result":normalize_grafana_frames(raw)}` (gateway POST, not Prom GET). `PrometheusMetricWidget` adapted to read `data.result` as `[{label,points}]`, rendering last non-null point per series. |
|
||||
| **GM-110** | Status validates gateway path | **PASS** | `monitoring.py` `get_prometheus_status` POSTs `/api/ds/query` with `expr:"up"`; 401/403→`auth_failed`, `RequestException`→`prometheus_unreachable`, other non-2xx→`gateway_error`, missing cfg→`gateway_not_configured`, success→`version="ok"`. Shared `_base_url`/`_auth_headers`/`_timeout` untouched (still serve alertmanager). Tests mock `requests.post` (not old `/-/healthy`/`buildinfo`). |
|
||||
| **GM-111** | Widget files renamed via git mv | **PASS** | `MetricChartWidget.tsx`/`MetricGaugeWidget.tsx`/`MetricMeanWidget.tsx` (+ tests) exist; `git log --follow` traces history through the rename. Exports renamed; rendering (recharts/LineSeriesChart/gauge bands/formatMean) preserved. `PrometheusMetricWidget` kept (not renamed). `grep PrometheusChart\|Gauge\|Mean Widget frontend/src` → only stale `.pi-map.md` artifacts (non-source). |
|
||||
| **GM-112** | Registry binds Metric* components | **PASS** | `registry.ts`: chart→`MetricChartWidget`, gauge→`MetricGaugeWidget`, mean→`MetricMeanWidget`, metric→`PrometheusMetricWidget`. Kind strings still `"chart"/"gauge"/"mean"/"metric"`. |
|
||||
| **GM-113** | Startup rejects old config shape | **PASS** | `main.py` `_validate_prometheus_gateway_config()` iterates `store.list_services("prometheus")`, flags `base_url` without `grafana_url`, logs `logger.warning` naming service+id+migration instruction; called from `lifespan` after `ensure_defaults()`; wrapped in try/except — never crashes. |
|
||||
| **GM-114** | CHANGELOG migration note | **PASS** | `CHANGELOG.md` `[Unreleased]` has a **BREAKING** entry naming `grafana_url`, `grafana_api_key`, `datasource_uid`, and the `POST /api/ds/query` switch. |
|
||||
| **GM-115** | Backend tests + ruff green | **PARTIAL** | Gates green: `pytest` **331 passed**, `ruff` clean. Coverage present: gateway POST assertion, `normalize_grafana_frames` (fallback/dedup/NaN), gauge/mean scalar-only, status check. **MISSING (per GM-115's explicit MUST-cover list):** no "startup old-config validation" test; no status `auth_failed` (401/403) scenario test. Functional code is correct; gap is enumerated coverage. See §5. |
|
||||
| **GM-116** | Frontend build + lint + test green | **PASS** | `npm run build` exit 0 (tsc -b + vite); `npm run lint` 0 errors (1 pre-existing unrelated `react-hooks/exhaustive-deps` warning in `WidgetConfigDialog.tsx`); `npx vitest run` **151 passed / 44 files** (renamed `Metric*` tests + qBit + PrometheusMetricWidget all green). |
|
||||
|
||||
**Functional roll-up: 15 PASS, 1 PARTIAL (GM-115, test-coverage only).**
|
||||
|
||||
---
|
||||
|
||||
## 3. Gate output (commands run + results)
|
||||
|
||||
| # | Command | Result | Output |
|
||||
|---|---|---|---|
|
||||
| 1 | `cd backend && PYTHONPATH=src python3 -m pytest -q` | **PASS** | `331 passed, 2 warnings` (39.6s). Warnings are unrelated Starlette/pythonjsonlogger deprecations. |
|
||||
| 2 | `cd backend && PYTHONPATH=src python3 -m ruff check src tests` | **PASS** | `All checks passed!` |
|
||||
| 3 | `cd frontend && npm run build` | **PASS** | `tsc -b && vite build` → `built in 1.09s` (chunk-size advisory only, not an error). |
|
||||
| 4 | `cd frontend && npm run lint` | **PASS** | `0 errors, 1 warning` (pre-existing exhaustive-deps in `WidgetConfigDialog.tsx`, unrelated to this change). |
|
||||
| 5 | `cd frontend && npx vitest run` | **PASS** | `Test Files 44 passed (44) · Tests 151 passed (151)`. |
|
||||
| 6 | `grep -n "/api/v1/query" …/widgets/sources.py` | **PASS** | NONE (GM-102 "no direct Prom HTTP call"). |
|
||||
| 7 | `grep -rn "PrometheusChartWidget\|PrometheusGaugeWidget\|PrometheusMeanWidget" frontend/src` | **PASS** | Only `.pi-map.md`/`.pi-map.index.md` (stale generated docs, non-source). |
|
||||
| 8 | `git log --follow …/MetricChartWidget.tsx` | **PASS** | History preserved through `git mv` (traceable to `1fb12b8`, `5dad982`, …). |
|
||||
|
||||
### Adversarial checks
|
||||
|
||||
- **DRY label-dedup:** `normalize_grafana_frames` and `normalize_prometheus_matrix` BOTH call the shared `_dedup_label(label, seen)` (prometheus_range.py). Not duplicated. ✓
|
||||
- **Startup validation not a no-op:** `_validate_prometheus_gateway_config` really iterates services and conditionally warns on the `base_url`-without-`grafana_url` shape; it is not a bare `logger.info`. (But it has no unit test — §5.)
|
||||
- **Dead code:** `normalize_prometheus_matrix` has no active production caller (only tests + the documented `# noqa: F401` import). Intentional per design decision 5.
|
||||
- **Status path:** `get_prometheus_status` runs `up` via gateway POST (confirmed), not the old direct-Prom `/-/healthy`+`buildinfo` path.
|
||||
- **qBit unaffected:** `QbittorrentWidgetSource` builds `{series}` inline (sources.py:437); never touches `MetricSource`/`normalize_*`; `QbittorrentSpeedWidget` still uses `LineSeriesChart` (unchanged). qBit tests green.
|
||||
- **CHANGELOG accuracy:** entry names the correct fields (`grafana_url`, `grafana_api_key`, `datasource_uid`) and is marked BREAKING. ✓
|
||||
|
||||
---
|
||||
|
||||
## 4. Blocking findings
|
||||
|
||||
### [CRITICAL — archive blocker, NOT a code defect] 33 unchecked task checkboxes + missing `apply-progress.md`
|
||||
|
||||
`grep -c '^\s*- \[ \]' tasks.md` → **33**, covering every implementation task:
|
||||
|
||||
```
|
||||
- [ ] 1.1 … 1.16 (Slice 1: backend transport, normalizer, adapter, status, validation, CHANGELOG, tests, verify)
|
||||
- [ ] 2.1 … 2.11 (Slice 2: git mv renames, registry, barrel, PrometheusMetricWidget adapt, verify)
|
||||
- [ ] 3.1 … 3.6 (Integration: full gates + grep-verify + config.yaml + CHANGELOG checks)
|
||||
```
|
||||
|
||||
`apply-progress.md` does **not exist**. Per the SDD verify contract, unchecked
|
||||
implementation tasks with no apply-progress artifact to reconcile them are a
|
||||
CRITICAL archive blocker. The work itself is verified **complete** against source
|
||||
(§2) and **green** (§3); the blocker is purely task-tracker hygiene. The
|
||||
exception clause ("stale-checkbox reconciliation proven by apply-progress/
|
||||
verify-report") is partially satisfied by *this* verify report, but the cleaner
|
||||
path is to tick the boxes and author `apply-progress.md` before archive.
|
||||
|
||||
**Reconciliation (no code change):** tick all 33 boxes; write
|
||||
`apply-progress.md` recording the two landed commits (`df80c68`, `7e91e7f`) and
|
||||
the §3 gate results.
|
||||
|
||||
---
|
||||
|
||||
## 5. Non-blocking findings
|
||||
|
||||
### [WARNING] GM-115 PARTIAL — two enumerated test categories missing
|
||||
|
||||
GM-115 states tests "**MUST cover** … the startup old-config validation".
|
||||
**No such test exists** — `grep` for `_validate_prometheus_gateway_config` /
|
||||
`base_url` config-shape in `tests/` returns nothing. The startup code (GM-113) is
|
||||
correct and non-crashing, but is not exercised by any test.
|
||||
|
||||
Additionally, GM-110 lists the **"Auth failure in status"** scenario; the status
|
||||
test class (`TestPrometheusStatus`) covers only `no_service_configured`,
|
||||
`prometheus_unreachable`, and `returns_ok` — **no 401/403 → `auth_failed` case**.
|
||||
The `auth_failed` code branch exists and is reachable but untested.
|
||||
|
||||
**Recommendation (post-archive, non-blocking):** add a startup-validation test
|
||||
(e.g. seed an old-shape service, assert startup completes + a warning is logged)
|
||||
and a status 401→`auth_failed` test. No functional risk; the missing paths are
|
||||
straightforward logger/error mappings.
|
||||
|
||||
### [INFO] `normalize_prometheus_matrix` is now dead production code
|
||||
|
||||
After this change, no production caller invokes `normalize_prometheus_matrix`
|
||||
(only `test_prometheus_range.py` does). It is retained **by design** (decision 5:
|
||||
future-proof for a possible `direct_url` path) and remains unit-tested, so there
|
||||
is no risk. The `# noqa: F401 — kept for future direct_url path` comment on the
|
||||
`sources.py` import documents the intent. qBit builds series inline and never
|
||||
used it (the spec's assumption #3 that qBit consumed it was corrected in the
|
||||
design source-findings).
|
||||
|
||||
### [INFO] Stale generated `.pi-map.md` artifacts
|
||||
|
||||
`frontend/src/integrations/.pi-map.md`, `frontend/src/widgets/.pi-map.md`,
|
||||
`frontend/src/widgets/__tests__/.pi-map.{md,index.md}` still list the old
|
||||
`Prometheus*Widget` names. These are generated map docs, not deliverable source
|
||||
(ignored by `tsc`/`vite`/`eslint`). Regenerate via `project_map_patch` /
|
||||
`project_map_validate` at the orchestrator's convenience.
|
||||
|
||||
### [INFO] Working-tree state
|
||||
|
||||
- `git diff --cached` → empty (**no staged files**; `no-staged-files` criterion satisfied).
|
||||
- Uncommitted: `frontend/src/widgets/PrometheusMetricWidget.tsx` and
|
||||
`frontend/src/pages/ServicesPage.tsx` — both **whitespace-only** (single
|
||||
indentation line each, unrelated to the change substance). The substantive
|
||||
PrometheusMetricWidget adaptation (the `{result:[{label,points}]}` shape) is
|
||||
committed in slice 2.
|
||||
- Untracked: `.pi-tmp/*` scratch files (not part of this change).
|
||||
|
||||
---
|
||||
|
||||
## 6. Task-checkbox scan (contract requirement)
|
||||
|
||||
**Unchecked implementation task markers (`^\s*- \[ \]`) in `tasks.md`: 33.**
|
||||
|
||||
Because unchecked implementation tasks remain and `apply-progress.md` is absent,
|
||||
this verify report **does not** declare the change ready for archive. The exact
|
||||
unchecked lines are listed in §4 (tasks 1.1–1.16, 2.1–2.11, 3.1–3.6). All
|
||||
underlying work is confirmed complete and green against source (§2, §3); the
|
||||
checkboxes are stale and should be ticked + `apply-progress.md` authored before
|
||||
archive.
|
||||
|
||||
---
|
||||
|
||||
## 7. Spec / design coherence
|
||||
|
||||
- Spec → design → source agree on: gateway transport shape (`_gateway_query`),
|
||||
instant-query mapping (`from=now-1m,to=now,maxDataPoints=1`, spec assumption
|
||||
#1), shared `_dedup_label` (GM-104 DRY), status `version="ok"` (assumption #2),
|
||||
`normalize_prometheus_matrix` retention (assumption #3 / decision 5), old
|
||||
`api_key` becoming inert (assumption #4).
|
||||
- Design §3.4 **Option A** was chosen for `_fetch_metric`: backend returns
|
||||
`{"result": normalize_grafana_frames(raw)}` and `PrometheusMetricWidget` was
|
||||
adapted to the `{label,points}` shape (small change, ~63-line component). No
|
||||
Option B fallback needed.
|
||||
- Review-workload forecast (tasks.md): chained PRs recommended, split
|
||||
S1(backend)/S2(frontend), each ≤400 lines, stacked-to-main. Two slices landed
|
||||
exactly on that boundary; no scope creep (no third slice, no unrelated files).
|
||||
`size:exception` not used.
|
||||
|
||||
---
|
||||
|
||||
## 8. Risks
|
||||
|
||||
- **Migration correctness depends on the recovered frames shape.** The
|
||||
`normalize_grafana_frames` mock in tests mirrors the recovered-from-`65bae95`
|
||||
parser; if a real Grafana `/api/ds/query` response varies (e.g. multi-field
|
||||
frames, `data.values` with >2 columns), the `fields[-1]` value-field heuristic
|
||||
may mis-pick. Low likelihood; mitigated by defensive parsing.
|
||||
- **Old-shape services degrade silently at runtime.** A pre-change
|
||||
`prometheus` service (with `base_url`) will warn on startup (GM-113) but its
|
||||
widget fetches will return `grafana_url is required` errors until reconfigured.
|
||||
This is the intended degraded state; the CHANGELOG documents the required
|
||||
operator action.
|
||||
- **Dead `normalize_prometheus_matrix`** — see §5 (intentional, low risk).
|
||||
- **Two uncommitted whitespace-only edits** in the tree — cosmetic, but a clean
|
||||
tree is preferable before archive.
|
||||
|
||||
---
|
||||
|
||||
## 9. Conclusion
|
||||
|
||||
The `grafana-metric-gateway` change is **functionally complete and correct**:
|
||||
all 16 requirements are satisfied at the source level (15 PASS, 1 PARTIAL on
|
||||
test-coverage only), and all five quality gates are green. Prometheus queries are
|
||||
fully gated behind Grafana's `/api/ds/query` with zero direct-Prom HTTP residue.
|
||||
Archive is **blocked** solely on task hygiene — 33 unchecked task checkboxes and
|
||||
a missing `apply-progress.md` (reconcilable without code) — plus a non-blocking
|
||||
recommendation to add two enumerated tests (startup validation, status
|
||||
`auth_failed`).
|
||||
Reference in New Issue
Block a user