49 lines
1.5 KiB
Nim
49 lines
1.5 KiB
Nim
import common, api
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import chronicles
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logScope: service = "fork_service"
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proc pollForFork(vc: ValidatorClientRef) {.async.} =
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let fork =
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try:
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await vc.getHeadStateFork()
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except ValidatorApiError as exc:
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error "Unable to retrieve head state's fork", reason = exc.msg
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return
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except CatchableError as exc:
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error "Unexpected error occured while getting fork information",
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err_name = exc.name, err_msg = exc.msg
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return
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if vc.fork.isNone() or vc.fork.get() != fork:
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vc.fork = some(fork)
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notice "Fork update success", fork = fork
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proc waitForNextEpoch(service: ForkServiceRef) {.async.} =
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let vc = service.client
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let sleepTime = vc.beaconClock.durationToNextEpoch() + TIME_DELAY_FROM_SLOT
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debug "Sleeping until next epoch", sleep_time = sleepTime
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await sleepAsync(sleepTime)
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proc mainLoop(service: ForkServiceRef) {.async.} =
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service.state = ServiceState.Running
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let vc = service.client
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debug "Service started"
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try:
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while true:
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await vc.pollForFork()
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await service.waitForNextEpoch()
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except CatchableError as exc:
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warn "Service crashed with unexpected error", err_name = exc.name,
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err_msg = exc.msg
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proc init*(t: typedesc[ForkServiceRef],
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vc: ValidatorClientRef): Future[ForkServiceRef] {.async.} =
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debug "Initializing service"
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var res = ForkServiceRef(client: vc, state: ServiceState.Initialized)
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await vc.pollForFork()
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return res
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proc start*(service: ForkServiceRef) =
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service.lifeFut = mainLoop(service)
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