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