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Sensors: per-service and container sensors, pattern-limited tokens, fleet query, steady sampler

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- service.<unit>.active|state for services that are enabled, up or failed
- containers.* and container.<name>.running|state|health|mem|cpu (cgroup reads, no docker stats)
- sensors:read tokens can be limited to ID patterns, enforced on every endpoint and,
  through the hub's filter header, on managed machines; the header can only narrow
- /api/fleet/sensors/query: one shaped query, every machine, one request
- the sampler waits what's left of the interval, so 250 ms means 4 a second
- Monitors asks for the families it draws instead of *
- unpowered hwmon sentinels (-93 °C) are not temperatures

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Mitchell-Johnson
2026-09-19 08:08:44 -07:00
co-authored by Claude Fable 5.1
parent 4ddf10be51
commit 4c2eb57ea6
11 changed files with 383 additions and 51 deletions
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web/src/Dashboard.tsx
+4 -4
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@@ -4,7 +4,7 @@ import Sparkline from './Sparkline'
import { Loading, Spinner, toast } from './ui'
import { fmtMs, useRefreshMs } from './prefs'
import { fetchCatalog, fetchHistories, useSensorStream } from './sensors'
import { Catalog, MONITOR_HISTORY, MONITOR_SHAPE, Values, sampleOf, seriesOf, stale } from './sampleAdapter'
import { Catalog, MONITOR_HISTORY, MONITOR_SHAPE, Values, mergeValues, sampleOf, seriesOf, stale } from './sampleAdapter'
import { Widget, WidgetData, WidgetSpec, shapeOf } from './widgets'
import WidgetPicker from './WidgetPicker'
@@ -302,7 +302,7 @@ export default function Dashboard() {
// thresholds; one batch of histories to seed the curves; one stream for the values.
const catalog = useRef<Catalog>(new Map())
const refetching = useRef(false)
const stock = useSensorStream<{ v: Values }>(MONITOR_SHAPE, { full: false, everyMs: refreshMs })
const stock = useSensorStream<unknown[]>(MONITOR_SHAPE, { full: false, everyMs: refreshMs })
const seed = useCallback(async () => {
try {
catalog.current = new Map((await fetchCatalog()).map((x) => [x.id, x]))
@@ -312,8 +312,8 @@ export default function Dashboard() {
}, [])
useEffect(() => { seed() }, [seed, stock.resumed]) // on load, and again after the page was hidden: the curves have a gap to refill
useEffect(() => {
const v = stock.data?.v
if (!v || catalog.current.size === 0) return
if (!stock.data || catalog.current.size === 0) return
const v: Values = mergeValues(stock.data)
if (stale(v, catalog.current) && !refetching.current) { // something appeared (a disk, an interface): learn its labels
refetching.current = true
fetchCatalog().then((c) => { catalog.current = new Map(c.map((x) => [x.id, x])) }).catch(() => {}).finally(() => window.setTimeout(() => { refetching.current = false }, 10000))