nim-codex/codex/contracts/storage.nim
Eric Mastro 372f827982 [marketplace] add/remove proofs for contract state
Add or remove proof requirements when a request contract’s state changes. When a request sale has completed (for a slot), the host who purchased that slot now must provide regular proofs for the data they are contracted to hold. This is now enforced by adding the slotId to the HashSet of Ids for which to require proofs. When a request has been cancelled (not all slots were filled before the request expired), proofs no longer need to be provided and the slotId is removed from teh HashSet.

Add `isCancelled` and `isSlotCancelled` checks to query the contract state without relying the on the state context variable in the contract. Because contract state can only be updated in a transaction, and the client withdrawing funds is responsible for changing the contract state to “Cancelled”, the `isCancelled` and `isSlotCancelled` functions were introduced to check the state regardless of whether or not the client had already withdrawn their funds.
2022-10-25 15:10:35 +11:00

57 lines
2.4 KiB
Nim

import pkg/ethers
import pkg/json_rpc/rpcclient
import pkg/stint
import pkg/chronos
import ./requests
export stint
export ethers
type
Storage* = ref object of Contract
StorageRequested* = object of Event
requestId*: RequestId
ask*: StorageAsk
SlotFilled* = object of Event
requestId* {.indexed.}: RequestId
slotIndex* {.indexed.}: UInt256
slotId* {.indexed.}: SlotId
RequestFulfilled* = object of Event
requestId* {.indexed.}: RequestId
RequestCancelled* = object of Event
requestId* {.indexed.}: Id
ProofSubmitted* = object of Event
id*: SlotId
proof*: seq[byte]
proc collateralAmount*(storage: Storage): UInt256 {.contract, view.}
proc slashMisses*(storage: Storage): UInt256 {.contract, view.}
proc slashPercentage*(storage: Storage): UInt256 {.contract, view.}
proc deposit*(storage: Storage, amount: UInt256) {.contract.}
proc withdraw*(storage: Storage) {.contract.}
proc balanceOf*(storage: Storage, account: Address): UInt256 {.contract, view.}
proc requestStorage*(storage: Storage, request: StorageRequest) {.contract.}
proc fillSlot*(storage: Storage, requestId: RequestId, slotIndex: UInt256, proof: seq[byte]) {.contract.}
proc withdrawFunds*(storage: Storage, requestId: Id) {.contract.}
proc payoutSlot*(storage: Storage, requestId: RequestId, slotIndex: UInt256) {.contract.}
proc getRequest*(storage: Storage, id: RequestId): StorageRequest {.contract, view.}
proc getHost*(storage: Storage, id: SlotId): Address {.contract, view.}
proc proofPeriod*(storage: Storage): UInt256 {.contract, view.}
proc proofTimeout*(storage: Storage): UInt256 {.contract, view.}
proc proofEnd*(storage: Storage, id: SlotId): UInt256 {.contract, view.}
proc missingProofs*(storage: Storage, id: SlotId): UInt256 {.contract, view.}
proc isCancelled*(storage: Storage, id: Id): bool {.contract, view.}
proc isSlotCancelled*(storage: Storage, id: Id): bool {.contract, view.}
proc isProofRequired*(storage: Storage, id: SlotId): bool {.contract, view.}
proc willProofBeRequired*(storage: Storage, id: SlotId): bool {.contract, view.}
proc getChallenge*(storage: Storage, id: SlotId): array[32, byte] {.contract, view.}
proc getPointer*(storage: Storage, id: SlotId): uint8 {.contract, view.}
proc submitProof*(storage: Storage, id: SlotId, proof: seq[byte]) {.contract.}
proc markProofAsMissing*(storage: Storage, id: SlotId, period: UInt256) {.contract.}