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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | 3x 3x 3x 3x 11x 11x 20x 13x 10x 20x 10x 10x 20x 10x 10x 10x 11x 11x 9x 1x 9x 11x 9x 10x 9x 11x | /**
* @see frontend/docs/UX/layer-contracts/L1-data-layer.md §3.7
*
* Data-age -tarkistus non-SSE-näkymille. Palauttaa datan iän
* millisekunteina ja binäärin stale-tilan.
*
* Ikäkynnys = gcTime - retention_margin = 30 min - 5 min = 25 min
*
* Ei renderöi mitään — puhdas hook.
*/
import { useState, useEffect } from 'react'
import { useQueryClient } from '@tanstack/react-query'
import type { EntityPath } from './contracts'
import type { QueryParams } from '../interfaces'
import { normalizeFilters } from './mutationQueue'
const GC_TIME_MS = 30 * 60 * 1000
const RETENTION_MARGIN_MS = 5 * 60 * 1000
const AGE_THRESHOLD_MS = GC_TIME_MS - RETENTION_MARGIN_MS
const TICK_INTERVAL_MS = 60_000
export interface DataAgeResult {
ageMs: number
isStale: boolean
}
export function useDataAge(
entityPath: EntityPath,
normalizedParams?: QueryParams,
): DataAgeResult {
const queryClient = useQueryClient()
const normParams = normalizedParams ? normalizeFilters(normalizedParams) : null
function compute(): DataAgeResult {
const queries = queryClient
.getQueryCache()
.getAll()
.filter((q) => {
if (q.queryKey[0] !== entityPath) return false
Eif (!normParams) return true
const keyParams = q.queryKey[1] as QueryParams | undefined
if (!keyParams) return true
const normJson = JSON.stringify(normParams)
const keyJson = JSON.stringify(keyParams)
return normJson === keyJson
})
const timestamps = queries
.map((q) => q.state.dataUpdatedAt)
.filter((t): t is number => t > 0)
if (timestamps.length === 0) {
return { ageMs: Infinity, isStale: true }
}
const ageMs = Date.now() - Math.max(...timestamps)
return { ageMs, isStale: ageMs > AGE_THRESHOLD_MS }
}
const [result, setResult] = useState<DataAgeResult>(compute)
useEffect(() => {
const id = setInterval(() => {
setResult(compute())
}, TICK_INTERVAL_MS)
return () => clearInterval(id)
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [entityPath, normalizedParams])
useEffect(() => {
const unsubscribe = queryClient.getQueryCache().subscribe(() => {
setResult(compute())
})
return unsubscribe
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [entityPath, normalizedParams])
return result
}
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