53 lines
1.9 KiB
Nim
53 lines
1.9 KiB
Nim
import pkg/ethers
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import pkg/upraises
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import pkg/questionable
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import ../market
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import ./storage
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type
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OnChainMarket* = ref object of Market
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contract: Storage
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signer: Signer
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MarketSubscription = market.Subscription
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EventSubscription = ethers.Subscription
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OnChainMarketSubscription = ref object of MarketSubscription
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eventSubscription: EventSubscription
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export market
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func new*(_: type OnChainMarket, contract: Storage): OnChainMarket =
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without signer =? contract.signer:
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raiseAssert("Storage contract should have a signer")
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OnChainMarket(contract: contract, signer: signer)
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method requestStorage(market: OnChainMarket, request: StorageRequest) {.async.} =
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var request = request
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request.client = await market.signer.getAddress()
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await market.contract.requestStorage(request)
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method offerStorage(market: OnChainMarket, offer: StorageOffer) {.async.} =
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var offer = offer
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offer.host = await market.signer.getAddress()
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await market.contract.offerStorage(offer)
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method subscribeRequests(market: OnChainMarket,
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callback: OnRequest):
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Future[MarketSubscription] {.async.} =
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proc onEvent(event: StorageRequested) {.upraises:[].} =
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callback(event.request)
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let subscription = await market.contract.subscribe(StorageRequested, onEvent)
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return OnChainMarketSubscription(eventSubscription: subscription)
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method subscribeOffers(market: OnChainMarket,
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requestId: array[32, byte],
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callback: OnOffer):
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Future[MarketSubscription] {.async.} =
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proc onEvent(event: StorageOffered) {.upraises:[].} =
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if event.requestId == requestId:
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callback(event.offer)
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let subscription = await market.contract.subscribe(StorageOffered, onEvent)
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return OnChainMarketSubscription(eventSubscription: subscription)
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method unsubscribe*(subscription: OnChainMarketSubscription) {.async.} =
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await subscription.eventSubscription.unsubscribe()
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