nim-codex/codex/sales/states/slotreserving.nim

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import pkg/questionable
import pkg/questionable/results
import pkg/metrics
import ../../logutils
import ../../market
import ../salesagent
import ../statemachine
import ./errorhandling
import ./cancelled
import ./failed
import ./filled
import ./ignored
import ./downloading
import ./errored
type
SaleSlotReserving* = ref object of ErrorHandlingState
logScope:
topics = "marketplace sales reserving"
method `$`*(state: SaleSlotReserving): string = "SaleSlotReserving"
method onCancelled*(state: SaleSlotReserving, request: StorageRequest): ?State =
return some State(SaleCancelled())
method onFailed*(state: SaleSlotReserving, request: StorageRequest): ?State =
return some State(SaleFailed())
method onSlotFilled*(state: SaleSlotReserving, requestId: RequestId,
slotIndex: UInt256): ?State =
return some State(SaleFilled())
method run*(state: SaleSlotReserving, machine: Machine): Future[?State] {.async.} =
let agent = SalesAgent(machine)
let data = agent.data
let context = agent.context
let market = context.market
logScope:
requestId = data.requestId
slotIndex = data.slotIndex
let canReserve = await market.canReserveSlot(data.requestId, data.slotIndex)
if canReserve:
try:
trace "Reserving slot"
await market.reserveSlot(data.requestId, data.slotIndex)
except MarketError as e:
return some State( SaleErrored(error: e) )
trace "Slot successfully reserved"
return some State( SaleDownloading() )
else:
# do not re-add this slot to the queue, and return bytes from Reservation to
# the Availability
debug "Slot cannot be reserved, ignoring"
return some State( SaleIgnored(reprocessSlot: false, returnBytes: true) )