41 lines
1.0 KiB
Nim
41 lines
1.0 KiB
Nim
import ../statemachine
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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 PurchaseState
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method enterAsync(state: PurchaseSubmitted) {.async.} =
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without purchase =? (state.context as Purchase) and
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request =? purchase.request:
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raiseAssert "invalid state"
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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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state.switch(PurchaseCancelled())
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return
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except CatchableError as error:
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state.switch(PurchaseErrored(error: error))
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return
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state.switch(PurchaseStarted())
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method description*(state: PurchaseSubmitted): string =
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"submitted"
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