status-lib/status/utils/cache.nim

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2021-09-08 18:05:39 +00:00
import tables, times
type ValueTime* = ref object
value*: string
timestamp*: DateTime
type CachedValues* = Table[string, ValueTime]
proc newCachedValues*(): CachedValues = initTable[string, ValueTime]()
proc isCached*(self: CachedValues, cacheKey: string, duration=initDuration(minutes = 5)): bool =
self.hasKey(cacheKey) and ((self[cacheKey].timestamp + duration) >= now())
proc cacheValue*(self: var CachedValues, cacheKey: string, value: string) =
self[cacheKey] = ValueTime(value: value, timestamp: now())
proc get*(self: var CachedValues, cacheKey: string): string = self[cacheKey].value