nim-libp2p/libp2p/utils/heartbeat.nim

34 lines
975 B
Nim

# Nim-Libp2p
# Copyright (c) 2023 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
# * MIT license ([LICENSE-MIT](LICENSE-MIT))
# at your option.
# This file may not be copied, modified, or distributed except according to
# those terms.
{.push raises: [].}
import chronos, chronicles
export chronicles
template heartbeat*(name: string, interval: Duration, body: untyped): untyped =
var nextHeartbeat = Moment.now()
while true:
body
nextHeartbeat += interval
let now = Moment.now()
if nextHeartbeat < now:
let
delay = now - nextHeartbeat
itv = interval
if delay > itv:
info "Missed multiple heartbeats",
heartbeat = name, delay = delay, hinterval = itv
else:
debug "Missed heartbeat", heartbeat = name, delay = delay, hinterval = itv
nextHeartbeat = now + itv
await sleepAsync(nextHeartbeat - now)