Mark Spanbroek ea3b9916b2
contracts: introduce types for time and tokens
fixes bugs with slotqueue and repostore, where
expiry duration was misinterpreted as expiry
timestamp
2025-04-17 17:30:05 +02:00

44 lines
1.1 KiB
Nim

import pkg/chronos
import pkg/stew/endians2
import pkg/upraises
type
Clock* = ref object of RootObj
SecondsSince1970* = int64
Timeout* = object of CatchableError
method now*(clock: Clock): SecondsSince1970 {.base, gcsafe, upraises: [].} =
raiseAssert "not implemented"
method waitUntil*(clock: Clock, time: SecondsSince1970) {.base, async.} =
raiseAssert "not implemented"
method start*(clock: Clock) {.base, async.} =
discard
method stop*(clock: Clock) {.base, async.} =
discard
proc withTimeout*(
future: Future[void], clock: Clock, expiry: SecondsSince1970
) {.async.} =
let timeout = clock.waitUntil(expiry)
try:
await future or timeout
finally:
await timeout.cancelAndWait()
if not future.completed:
await future.cancelAndWait()
raise newException(Timeout, "Timed out")
proc toBytes*(i: SecondsSince1970): seq[byte] =
let asUint = cast[uint64](i)
@(asUint.toBytes)
proc toSecondsSince1970*(bytes: seq[byte]): SecondsSince1970 =
let asUint = uint64.fromBytes(bytes)
cast[int64](asUint)
proc toSecondsSince1970*(num: uint64): SecondsSince1970 =
cast[int64](num)