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MIS-Contro-Tower/Reliability.md
2026-04-24 14:06:15 +00:00

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Data Reliability — Handoff Prompt Problem Same machine shows different numbers in 3 places:

Home UI (Node-RED): goodParts=353, OEE=77.9% Recap: goodParts=185, OEE=56% Machine detail: OEE=4.3%, "Sin datos" in 1h timeline Root cause: each view queries a different table with different logic. No single source of truth.

Rule: pick one source per metric, reuse across views Metric Authoritative source Why goodParts, scrapParts (per WO) MachineWorkOrder.good_parts / scrap_parts Node-RED writes this via UPDATE work_orders SET .... It's what Home UI shows. cycleCount MachineWorkOrder.cycle_count Same reason. oee / availability / performance / quality time-weighted avg of MachineKpiSnapshot rows in window Snapshots are minute-by-minute; Node-RED already sends them. Don't recompute. Stops (count, duration) MachineEvent filtered by eventType IN (microstop, macrostop, mold-change) + data->>'status' != 'active' + !is_update && !is_auto_ack Deduped at source. Timeline segments UNION of: MachineWorkOrder status spans, MachineEvent (mold-change/micro/macro), filled with idle Only way to get continuous coverage. Backend changes /api/recap/[machineId]/route.ts and /api/recap/summary/route.ts goodParts aggregation — stop summing MachineCycle.good_delta. Instead:

// For window [start, end], sum good_parts from WOs that had activity in window const wos = await prisma.machineWorkOrder.findMany({ where: { machineId, orgId, updatedAt: { gte: start } }, select: { workOrderId: true, sku: true, good_parts: true, scrap_parts: true, target_qty: true, status: true, updatedAt: true } }); const goodParts = wos.reduce((s, w) => s + (w.good_parts ?? 0), 0); const scrapParts = wos.reduce((s, w) => s + (w.scrap_parts ?? 0), 0); Optionally scope to WOs that were RUNNING during the window; but for 24h window this rarely matters.

OEE aggregation — time-weighted average:

const snaps = await prisma.machineKpiSnapshot.findMany({ where: { machineId, orgId, ts: { gte: start, lte: end } }, orderBy: { ts: 'asc' }, select: { ts: true, oee: true, availability: true, performance: true, quality: true } });

function weightedAvg(field: 'oee' | 'availability' | 'performance' | 'quality') { if (snaps.length === 0) return null; let totalMs = 0, sum = 0; for (let i = 0; i < snaps.length; i++) { const nextTs = (snaps[i+1]?.ts ?? end).getTime(); const dt = Math.max(0, nextTs - snaps[i].ts.getTime()); sum += (snaps[i][field] ?? 0) * dt; totalMs += dt; } return totalMs > 0 ? sum / totalMs : null; } Return null (not 0, not 100) when no snapshots. Frontend renders — for null.

Stops aggregation — filter properly:

const stops = await prisma.machineEvent.findMany({ where: { machineId, orgId, ts: { gte: start, lte: end }, eventType: { in: ['microstop','macrostop'] }, } }); const real = stops.filter(e => { const d = e.data as any; return d?.status !== 'active' && !d?.is_auto_ack && !d?.is_update; }); const stopsCount = real.length; const stopsMin = real.reduce((s, e) => s + (((e.data as any)?.stoppage_duration_seconds ?? 0) / 60), 0); /api/recap/[machineId]/timeline — MUST include mold-change Segment builder in priority order (higher priority wins when overlapping):

mold-change segments (pair active→resolved by incidentKey, duration from data.duration_sec) macrostop segments (same pairing) microstop segments (merge runs <60s apart into cluster) production segments — derived from WO status history, use MachineWorkOrder.status transitions + MachineCycle density (no cycles for >threshold → not production) idle gap-fill Never return empty array if any event exists in window. "Sin datos" only if literally zero rows in both MachineEvent and MachineCycle for the window.

Merge rules:

Same-type consecutive segments separated by <30s → merge Any segment <30s duration, absorb into neighbor Return format:

{ range: { start, end }, segments: Array<{ type: 'production' | 'mold-change' | 'macrostop' | 'microstop' | 'idle', startMs, endMs, durationSec, label?: string, // WO id, mold ids, reason workOrderId?: string, sku?: string, reasonLabel?: string, }>, hasData: boolean // false only if literally empty } Frontend changes RecapMachineCard.tsx / Machine detail page / OverviewTimeline.tsx All three MUST consume the same endpoint and render from the same shape. Timeline in Machine detail page (app/(app)/machines/[machineId]/MachineDetailClient.tsx) currently queries its own source — refactor to call /api/recap/[machineId]/timeline with range=1h for the small timeline, range=24h for the recap.

"Sin datos" fallback: render only when hasData === false. If timeline has any mold-change or stop segment, render the bar.

Null handling for OEE If backend returns oee: null:

Sin datos de KPI
Not 0.0%. Not 100%. Dash. User knows "no data" vs. "bad performance".

Reconciling with Home UI live numbers Home UI reads live state.activeWorkOrder.goodParts from Node-RED. Recap reads MachineWorkOrder.good_parts from CT DB.

These WILL briefly differ because of outbox lag (cycle POST → DB insert → next recap query). Mitigate:

Cache recap endpoints 30-60s max (shorter than current 2-5 min). On recap header, show "Actualizado hace Xs" timestamp so user sees freshness. Pi cycle outbox should already be fast (<5s normally). If backlog is persistent, flag it in the UI with a "CT desincronizado" warning (compare MachineHeartbeat.ts to now; if >5min, show amber status). Sanity check queries for debugging Run on CT to audit one machine:

-- Authoritative WO state (matches Home UI) SELECT work_order_id, sku, good_parts, scrap_parts, cycle_count, status, "updatedAt" FROM "MachineWorkOrder" WHERE "machineId" = '' ORDER BY "updatedAt" DESC LIMIT 5;

-- What KPI snapshots exist in last 24h SELECT ts, oee, availability, performance, quality FROM "MachineKpiSnapshot" WHERE "machineId" = '' AND ts > NOW() - INTERVAL '24 hours' ORDER BY ts DESC LIMIT 20;

-- Events breakdown SELECT "eventType", COUNT() AS total, COUNT() FILTER (WHERE data->>'status' = 'active') AS active, COUNT() FILTER (WHERE (data->>'is_update')::bool) AS updates, COUNT() FILTER (WHERE (data->>'is_auto_ack')::bool) AS auto_acks FROM "MachineEvent" WHERE "machineId" = '' AND ts > NOW() - INTERVAL '24 hours' GROUP BY "eventType"; If MachineWorkOrder.good_parts says 353 and Home UI says 353 but recap says 185 → recap is still using old aggregation. If MachineKpiSnapshot count is 0 for last hour → Node-RED isn't sending snapshots (check outbox).

Checklist not done Recap endpoints use MachineWorkOrder.good_parts not cycle sum not done OEE uses time-weighted MachineKpiSnapshot avg, returns null when empty not done Timeline includes mold-change events not done Machine detail timeline uses same endpoint as recap not done "Sin datos" fallback only when hasData: false not done Null OEE renders as —, not 0 or 100 not done Same endpoint feeds recap grid mini timeline + detail full timeline not done Cache TTL reduced to 30-60s not done Staleness indicator visible in UI header Non-goals: no schema changes, no Node-RED changes, no new ingest endpoints