nim-codex/codex/utils/timer.nim
markspanbroek d56eb6aee1
Validator (#387)
* [contracts] Add SlotFreed event

* [integration] allow test node to be stopped twice

* [cli] add --validator option

* [contracts] remove dead code

* [contracts] instantiate OnChainMarket and OnChainClock only once

* [contracts] add Validation

* [sales] remove duplicate import

* [market] add missing import

* [market] subscribe to all SlotFilled events

* [market] add freeSlot()

* [sales] fix warnings

* [market] subscribe to SlotFreed events

* [contracts] fix warning

* [validator] keep track of filled slots

* [validation] remove slots that have ended

* [proving] absorb Proofs into Market

Both Proofs and Market are abstractions around
the Marketplace contract, having them separately
is more trouble than it's worth at the moment.

* [market] add markProofAsMissing()

* [clock] speed up waiting for clock in tests

* [validator] mark proofs as missing

* [timer] fix error on node shutdown

* [cli] handle --persistence and --validator separately

* [market] allow retrieval of proof timeout value

* [validator] do not subscribe to SlotFreed events

Freed slots are already handled in
removeSlotsThatHaveEnded(), and onSlotsFreed()
interfered with its iterator.

* [validator] Start validation at the start of a new period

To decrease the likelihood that we hit the validation timeout.

* [validator] do not mark proofs as missing after timeout

* [market] check whether proof can be marked as missing

* [validator] simplify validation

Simulate a transaction to mark proof as missing, instead
of trying to keep track of all the conditions that may
lead to a proof being marked as missing.

* [build] use nim-ethers PR #40

Uses "pending" blocktag instead of "latest" blocktag
for better simulation of transactions before sending
them.

https://github.com/status-im/nim-ethers/pull/40

* [integration] integration test for validator

* [validator] monitor a maximum number of slots

Adds cli parameter --validator-max-slots.

* [market] fix missing collateral argument

After rebasing, add the new argument to fillSlot calls.

* [build] update to nim-ethers 0.2.5

* [validator] use Set instead of Table to keep track of slots

* [validator] add logging

* [validator] add test for slot failure

* [market] use "pending" blocktag to use more up to date block time

* [contracts] remove unused import

* [validator] fix: wait until after period ends

The smart contract checks that 'end < block.timestamp',
so we need to wait until the block timestamp is greater
than the period end.
2023-04-19 15:06:00 +02:00

53 lines
1.4 KiB
Nim

## Nim-Codex
## 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.
## Timer
## Used to execute a callback in a loop
import pkg/chronos
import pkg/chronicles
import pkg/upraises
type
TimerCallback* = proc(): Future[void] {.gcsafe, upraises:[].}
Timer* = ref object of RootObj
callback: TimerCallback
interval: Duration
name: string
loopFuture: Future[void]
proc new*(T: type Timer, timerName = "Unnamed Timer"): T =
T(
name: timerName
)
proc timerLoop(timer: Timer) {.async.} =
try:
while true:
await timer.callback()
await sleepAsync(timer.interval)
except CancelledError:
raise
except CatchableError as exc:
error "Timer caught unhandled exception: ", name=timer.name, msg=exc.msg
method start*(timer: Timer, callback: TimerCallback, interval: Duration) {.base.} =
if timer.loopFuture != nil:
return
trace "Timer starting: ", name=timer.name
timer.callback = callback
timer.interval = interval
timer.loopFuture = timerLoop(timer)
method stop*(timer: Timer) {.async, base.} =
if timer.loopFuture != nil:
trace "Timer stopping: ", name=timer.name
await timer.loopFuture.cancelAndWait()
timer.loopFuture = nil