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https://github.com/codex-storage/nim-codex.git
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3181361658
* [state machine] Allow querying of state properties * [purchasing] use new state machine * [state machine] remove old state machine implementation * [purchasing] remove duplication in error handling
36 lines
965 B
Nim
36 lines
965 B
Nim
import ../statemachine
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import ./errorhandling
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import ./error
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import ./started
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import ./cancelled
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type PurchaseSubmitted* = ref object of ErrorHandlingState
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method `$`*(state: PurchaseSubmitted): string =
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"submitted"
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method run*(state: PurchaseSubmitted, machine: Machine): Future[?State] {.async.} =
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let purchase = Purchase(machine)
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let request = !purchase.request
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let market = purchase.market
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let clock = purchase.clock
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proc wait {.async.} =
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let done = newFuture[void]()
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proc callback(_: RequestId) =
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done.complete()
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let subscription = await market.subscribeFulfillment(request.id, callback)
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await done
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await subscription.unsubscribe()
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proc withTimeout(future: Future[void]) {.async.} =
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let expiry = request.expiry.truncate(int64)
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await future.withTimeout(clock, expiry)
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try:
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await wait().withTimeout()
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except Timeout:
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return some State(PurchaseCancelled())
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return some State(PurchaseStarted())
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