962 lines
41 KiB
Swift
962 lines
41 KiB
Swift
//
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import MobileCoin
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import SignalServiceKit
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public class PaymentsProcessor: NSObject {
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public override init() {
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super.init()
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AppReadiness.runNowOrWhenAppDidBecomeReadySync {
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Self.databaseStorage.appendDatabaseChangeDelegate(self)
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}
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AppReadiness.runNowOrWhenAppDidBecomeReadyAsync {
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self.process()
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}
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NotificationCenter.default.addObserver(self,
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selector: #selector(process),
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name: SSKReachability.owsReachabilityDidChange,
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object: nil)
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NotificationCenter.default.addObserver(self,
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selector: #selector(process),
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name: .OWSApplicationDidBecomeActive,
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object: nil)
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NotificationCenter.default.addObserver(self,
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selector: #selector(process),
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name: PaymentsConstants.arePaymentsEnabledDidChange,
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object: nil)
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}
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private static let unfairLock = UnfairLock()
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// Each instance of PaymentProcessingOperation represents
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// an attempt to usher a payment "one step forward" in the
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// processing state machine.
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//
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// On success, a PaymentProcessingOperation will enqueue
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// a new PaymentProcessingOperation to continue the process
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// until the payment is complete or failed.
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//
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// If a PaymentProcessingOperation fails but can be retried,
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// we'll enqueue a new PaymentProcessingOperation (possibly
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// after a retry delay).
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//
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// We use this collection to ensure that we don't process
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// a payment that is already being processed via a sequence
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// of PaymentProcessingOperations.
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//
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// This should only be accessed via unfairLock.
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private var processingPaymentIds = Set<String>()
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// We use a dedicated queue for processing
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// "outgoing, not yet verified" payments.
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//
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// This ensures that they are processed serially.
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let processingQueue_outgoing: OperationQueue = {
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let operationQueue = OperationQueue()
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operationQueue.name = "PaymentsProcessor-Outgoing"
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operationQueue.maxConcurrentOperationCount = 1
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return operationQueue
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}()
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// We use another queue for all other processing.
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let processingQueue_default: OperationQueue = {
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let operationQueue = OperationQueue()
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operationQueue.name = "PaymentsProcessor-Default"
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// We want a concurrency level high enough to ensure that
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// high-priority operations are processed in a timely manner.
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operationQueue.maxConcurrentOperationCount = 3
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return operationQueue
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}()
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private func processingQueue(forPaymentModel paymentModel: TSPaymentModel) -> OperationQueue {
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if paymentModel.isOutgoing,
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!paymentModel.isVerified {
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return processingQueue_outgoing
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} else {
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return processingQueue_default
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}
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}
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// This method tries to process every "unresolved" transaction.
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//
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// For incoming transactions, this involves verification.
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//
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// For outgoing transactions, this involves verification,
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// sending a notification message, etc.
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//
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// We need to ensure that there's only one operation for a given
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// payment record at a time. This processor works in batches.
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// A given payment record's operation will make a best effort to
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// resolve that payment record until it is complete or failed,
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// although the operations may fail to do so.
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@objc
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public func process() {
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DispatchQueue.global().async {
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guard !CurrentAppContext().isRunningTests else {
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return
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}
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guard Self.paymentsHelper.arePaymentsEnabled else {
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return
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}
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guard
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AppReadiness.isAppReady,
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CurrentAppContext().isMainAppAndActive,
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DependenciesBridge.shared.tsAccountManager.registrationStateWithMaybeSneakyTransaction.isRegistered
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else {
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return
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}
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guard !DebugFlags.paymentsHaltProcessing.get() else {
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return
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}
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// Kick of processing for any payments that need
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// processing but are not yet being processed.
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self.buildProcessingOperations()
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}
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}
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private func buildProcessingOperations() {
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// Find all unresolved payment records.
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var paymentModels: [TSPaymentModel] = Self.databaseStorage.read { transaction in
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PaymentFinder.paymentModels(paymentStates: Array(Self.paymentStatesToProcess),
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transaction: transaction)
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}
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paymentModels.sort { (left, right) -> Bool in
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left.sortDate.compare(right.sortDate) == .orderedAscending
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}
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// Create a new operation for any payment that needs to be
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// processed that we're not already processing.
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let delegate: PaymentProcessingOperationDelegate = self
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Self.unfairLock.withLock {
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for paymentModel in paymentModels {
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let paymentId = paymentModel.uniqueId
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// Don't add an operation if we're already processing this payment model.
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guard !self.processingPaymentIds.contains(paymentId) else {
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continue
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}
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self.processingPaymentIds.insert(paymentId)
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let operation = PaymentProcessingOperation(delegate: delegate,
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paymentModel: paymentModel)
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processingQueue(forPaymentModel: paymentModel).addOperation(operation)
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}
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}
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}
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// The list of payment states that _do not_ need processing.
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private static var paymentStatesToIgnore: Set<TSPaymentState> {
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Set([
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.outgoingComplete,
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.outgoingFailed,
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.incomingComplete,
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.incomingFailed
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])
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}
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// The list of payment states that _do_ need processing.
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private static var paymentStatesToProcess: Set<TSPaymentState> {
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Set([
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.outgoingUnsubmitted,
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.outgoingUnverified,
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.outgoingVerified,
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.outgoingSending,
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.outgoingSent,
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.incomingUnverified,
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.incomingVerified
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])
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}
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// MARK: - RetryScheduler
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// Retries occur after a fixed delay (e.g. per exponential backoff)
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// but this should short-circuit if reachability becomes available.
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fileprivate class RetryScheduler: NSObject {
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private let paymentModel: TSPaymentModel
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private let nextRetryDelayInteral: TimeInterval
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private weak var delegate: PaymentProcessingOperationDelegate?
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private let hasScheduled = AtomicBool(false, lock: .sharedGlobal)
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private var timer: Timer?
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var paymentId: String { paymentModel.uniqueId }
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init(paymentModel: TSPaymentModel,
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retryDelayInteral: TimeInterval,
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nextRetryDelayInteral: TimeInterval,
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delegate: PaymentProcessingOperationDelegate) {
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self.paymentModel = paymentModel
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self.nextRetryDelayInteral = nextRetryDelayInteral
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self.delegate = delegate
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super.init()
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DispatchQueue.global().asyncAfter(deadline: .now() + retryDelayInteral) { [weak self] in
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self?.tryToSchedule()
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}
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NotificationCenter.default.addObserver(self,
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selector: #selector(reachabilityChanged),
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name: SSKReachability.owsReachabilityDidChange,
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object: nil)
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}
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@objc
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private func reachabilityChanged() {
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AssertIsOnMainThread()
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guard reachabilityManager.isReachable else {
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return
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}
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tryToSchedule()
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}
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private func tryToSchedule() {
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guard hasScheduled.tryToSetFlag() else {
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return
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}
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timer?.invalidate()
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timer = nil
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delegate?.retryProcessing(paymentModel: paymentModel,
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nextRetryDelayInteral: nextRetryDelayInteral)
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}
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}
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private var retrySchedulerMap = [String: RetryScheduler]()
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private func add(retryScheduler: RetryScheduler) {
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Self.unfairLock.withLock {
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retrySchedulerMap[retryScheduler.paymentId] = retryScheduler
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}
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}
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private func remove(retryScheduler: RetryScheduler) {
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Self.unfairLock.withLock {
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_ = retrySchedulerMap.removeValue(forKey: retryScheduler.paymentId)
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}
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}
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}
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// MARK: -
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extension PaymentsProcessor: DatabaseChangeDelegate {
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public func databaseChangesDidUpdate(databaseChanges: DatabaseChanges) {
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AssertIsOnMainThread()
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owsAssertDebug(AppReadiness.isAppReady)
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guard databaseChanges.didUpdateModel(collection: TSPaymentModel.collection()) else {
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return
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}
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process()
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}
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public func databaseChangesDidUpdateExternally() {
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AssertIsOnMainThread()
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owsAssertDebug(AppReadiness.isAppReady)
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process()
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}
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public func databaseChangesDidReset() {
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AssertIsOnMainThread()
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owsAssertDebug(AppReadiness.isAppReady)
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process()
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}
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}
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// MARK: - PaymentProcessingOperationDelegate
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extension PaymentsProcessor: PaymentProcessingOperationDelegate {
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static func canBeProcessed(paymentModel: TSPaymentModel) -> Bool {
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guard !paymentModel.isUnidentified,
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!paymentModel.isComplete,
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!paymentModel.isFailed else {
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return false
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}
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return true
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}
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func continueProcessing(paymentModel: TSPaymentModel) {
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tryToScheduleProcessingOperation(paymentModel: paymentModel,
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label: "Continue processing",
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retryDelayInteral: nil)
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}
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func retryProcessing(paymentModel: TSPaymentModel, nextRetryDelayInteral: TimeInterval) {
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tryToScheduleProcessingOperation(paymentModel: paymentModel,
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label: "Retry processing",
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retryDelayInteral: nextRetryDelayInteral)
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}
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private func tryToScheduleProcessingOperation(paymentModel: TSPaymentModel,
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label: String,
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retryDelayInteral: TimeInterval?) {
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let paymentId = paymentModel.uniqueId
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Self.unfairLock.withLock {
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owsAssertDebug(processingPaymentIds.contains(paymentId))
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}
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guard Self.canBeProcessed(paymentModel: paymentModel) else {
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self.endProcessing(paymentModel: paymentModel)
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return
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}
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let operation = PaymentProcessingOperation(delegate: self,
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paymentModel: paymentModel,
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retryDelayInteral: retryDelayInteral)
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processingQueue(forPaymentModel: paymentModel).addOperation(operation)
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}
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func scheduleRetryProcessing(
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paymentModel: TSPaymentModel,
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retryDelayInteral: TimeInterval,
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nextRetryDelayInteral: TimeInterval
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) {
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add(retryScheduler: RetryScheduler(
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paymentModel: paymentModel,
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retryDelayInteral: retryDelayInteral,
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nextRetryDelayInteral: nextRetryDelayInteral,
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delegate: self
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))
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}
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func endProcessing(paymentModel: TSPaymentModel) {
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endProcessing(paymentId: paymentModel.uniqueId)
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}
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func endProcessing(paymentId: String) {
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Self.unfairLock.withLock {
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owsAssertDebug(processingPaymentIds.contains(paymentId))
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processingPaymentIds.remove(paymentId)
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}
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}
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}
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// MARK: -
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private protocol PaymentProcessingOperationDelegate: AnyObject {
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func continueProcessing(paymentModel: TSPaymentModel)
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func retryProcessing(paymentModel: TSPaymentModel,
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nextRetryDelayInteral: TimeInterval)
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func scheduleRetryProcessing(paymentModel: TSPaymentModel,
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retryDelayInteral: TimeInterval,
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nextRetryDelayInteral: TimeInterval)
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func endProcessing(paymentModel: TSPaymentModel)
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func endProcessing(paymentId: String)
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}
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// MARK: -
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// See comments on PaymentsProcessor.process().
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private class PaymentProcessingOperation: OWSOperation {
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private weak var delegate: PaymentProcessingOperationDelegate?
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private let paymentId: String
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private let retryDelayInteral: TimeInterval
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private static let defaultRetryDelayInteral: TimeInterval = 1 * kSecondInterval
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init(delegate: PaymentProcessingOperationDelegate,
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paymentModel: TSPaymentModel,
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retryDelayInteral: TimeInterval? = nil) {
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self.delegate = delegate
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self.paymentId = paymentModel.uniqueId
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self.retryDelayInteral = retryDelayInteral ?? Self.defaultRetryDelayInteral
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super.init()
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self.queuePriority = queuePriority(forPaymentModel: paymentModel)
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}
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private func queuePriority(forPaymentModel paymentModel: TSPaymentModel) -> Operation.QueuePriority {
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switch paymentModel.paymentState {
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case .outgoingUnsubmitted,
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.outgoingUnverified:
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return .veryHigh
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case .outgoingVerified,
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.outgoingSending,
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.outgoingSent:
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return .normal
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case .incomingUnverified,
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.incomingVerified:
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return .high
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case .outgoingComplete,
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.incomingComplete,
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.outgoingFailed,
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.incomingFailed:
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owsFailDebug("Unexpected paymentState: \(paymentModel.paymentState.formatted)")
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return .normal
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@unknown default:
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owsFailDebug("Invalid paymentState: \(paymentModel.paymentState.formatted)")
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return .normal
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}
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}
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override public func run() {
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firstly {
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processStep()
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}.done {
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self.reportSuccess()
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}.catch { error in
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// processStep() should never fail.
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owsFailDebug("Unexpected error: \(error)")
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self.reportError(SSKUnretryableError.paymentsProcessingFailure)
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}
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}
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// It's important that every operation completes in a reasonable
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// period of time, to ensure that the operation queue doesn't
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// stall and payments are processed in a timely manner.
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fileprivate static let maxInterval: TimeInterval = kSecondInterval * 30
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// Try to usher a payment "one step forward" in the processing
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// state machine.
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//
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// We need to user transactions/payments through the various
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// steps of the state machine as quickly as possible, retry when
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// necessary, and avoid getting stuck in a tight retry loop.
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// Therefore retries are throttled and/or do backoff - but retry
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// behavior depends on the type of operation.
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private func processStep() -> Guarantee<Void> {
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// When this promise chain completes, we must call continueProcessing()
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// or endProcessing().
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firstly(on: DispatchQueue.global()) { () -> Promise<TSPaymentModel> in
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self.processStep(paymentModel: self.loadPaymentModelWithSneakyTransaction())
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}.timeout(seconds: Self.timeoutDuration, description: "process") { () -> Error in
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PaymentsError.timeout
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}.done(on: DispatchQueue.global()) { paymentModel in
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self.delegate?.continueProcessing(paymentModel: paymentModel)
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}.recover(on: DispatchQueue.global()) { (error: Error) -> Guarantee<Void> in
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switch error {
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case let paymentsError as PaymentsError:
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switch paymentsError {
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case .notEnabled,
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.userNotRegisteredOrAppNotReady,
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.userHasNoPublicAddress,
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.invalidCurrency,
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.invalidWalletKey,
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.invalidAmount,
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.invalidFee,
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.insufficientFunds,
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.invalidModel,
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.tooOldToSubmit,
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.indeterminateState,
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.unknownSDKError,
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.invalidInput,
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.invalidServerResponse,
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.attestationVerificationFailed,
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.outdatedClient,
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.serverRateLimited,
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.serializationError,
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.missingModel,
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.connectionFailure,
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.timeout,
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.invalidTransaction,
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.inputsAlreadySpent,
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.defragmentationFailed,
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.invalidPassphrase,
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.invalidEntropy,
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.killSwitch,
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.fogOutOfSync,
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.outgoingVerificationTakingTooLong,
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.missingMemo:
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owsFailDebugUnlessMCNetworkFailure(error)
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case .authorizationFailure:
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owsFailDebugUnlessMCNetworkFailure(error)
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case .verificationStatusUnknown,
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.ledgerBlockTimestampUnknown:
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// These errors are expected.
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Logger.info("Error: \(error)")
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case .defragmentationRequired:
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// These errors are expected but should be very rare.
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owsFailDebugUnlessMCNetworkFailure(error)
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}
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default:
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owsFailDebugUnlessMCNetworkFailure(error)
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}
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guard let paymentModel = self.loadPaymentModelWithSneakyTransaction() else {
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owsFailDebug("Could not reload payment model.")
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self.delegate?.endProcessing(paymentId: self.paymentId)
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return Guarantee.value(())
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}
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self.handleProcessingError(paymentModel: paymentModel, error: error)
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return Guarantee.value(())
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}
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}
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|
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private func handleProcessingError(paymentModel: TSPaymentModel, error: Error) {
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switch error {
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case let paymentsError as PaymentsError:
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switch paymentsError {
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case .notEnabled,
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.userNotRegisteredOrAppNotReady,
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.userHasNoPublicAddress,
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.invalidCurrency,
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.invalidWalletKey,
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.invalidAmount,
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.invalidFee,
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.insufficientFunds,
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.invalidModel,
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.tooOldToSubmit,
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.indeterminateState,
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.unknownSDKError,
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.invalidInput,
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.authorizationFailure,
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.invalidServerResponse,
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.attestationVerificationFailed,
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.outdatedClient,
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.serializationError,
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.missingModel,
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.invalidTransaction,
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.inputsAlreadySpent,
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.defragmentationFailed,
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.invalidPassphrase,
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.invalidEntropy,
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.killSwitch,
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.outgoingVerificationTakingTooLong,
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.missingMemo:
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// Do not retry these errors.
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delegate?.endProcessing(paymentId: self.paymentId)
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case .serverRateLimited:
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// Exponential backoff of at least 30 seconds.
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//
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// TODO: Revisit when FOG rate limiting behavior is well-defined.
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let retryDelayInteral = 30 + self.retryDelayInteral
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let nextRetryDelayInteral = self.retryDelayInteral * 2
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delegate?.scheduleRetryProcessing(paymentModel: paymentModel,
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retryDelayInteral: retryDelayInteral,
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nextRetryDelayInteral: nextRetryDelayInteral)
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case .connectionFailure,
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.fogOutOfSync,
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.timeout:
|
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// Vanilla exponential backoff.
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let retryDelayInteral = self.retryDelayInteral
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let nextRetryDelayInteral = self.retryDelayInteral * 2
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delegate?.scheduleRetryProcessing(paymentModel: paymentModel,
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retryDelayInteral: retryDelayInteral,
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nextRetryDelayInteral: nextRetryDelayInteral)
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case .verificationStatusUnknown,
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.ledgerBlockTimestampUnknown:
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// Exponential backoff.
|
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//
|
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// If the payment _has_ already been verified, we're just trying to fill
|
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// in a missing ledger timestamp. That is low priority and we can
|
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// backoff aggressively.
|
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//
|
|
// If the payment _hasn't_ been verified yet, we want to retry fairly
|
|
// aggressively.
|
|
let backoffFactor: TimeInterval = paymentModel.isVerified ? 4 : 1.5
|
|
var retryDelayInteral = self.retryDelayInteral
|
|
if paymentModel.isVerified {
|
|
// Don't try to fill in a missing ledger timestamp more than once per hour.
|
|
// Things work reasonably well without this extra info, it's not clear
|
|
// how long a missing ledger timestamp might take to appear, and we might
|
|
// have a large number of payments without this info.
|
|
retryDelayInteral += kHourInterval * 1
|
|
}
|
|
let nextRetryDelayInteral = self.retryDelayInteral * backoffFactor
|
|
delegate?.scheduleRetryProcessing(paymentModel: paymentModel,
|
|
retryDelayInteral: retryDelayInteral,
|
|
nextRetryDelayInteral: nextRetryDelayInteral)
|
|
case .defragmentationRequired:
|
|
// Vanilla exponential backoff.
|
|
let retryDelayInteral = self.retryDelayInteral
|
|
let nextRetryDelayInteral = self.retryDelayInteral * 2
|
|
delegate?.scheduleRetryProcessing(paymentModel: paymentModel,
|
|
retryDelayInteral: retryDelayInteral,
|
|
nextRetryDelayInteral: nextRetryDelayInteral)
|
|
}
|
|
default:
|
|
// Do not retry assertion errors.
|
|
delegate?.endProcessing(paymentId: self.paymentId)
|
|
}
|
|
}
|
|
|
|
private func loadPaymentModelWithSneakyTransaction() -> TSPaymentModel? {
|
|
Self.databaseStorage.read { transaction in
|
|
TSPaymentModel.anyFetch(uniqueId: self.paymentId, transaction: transaction)
|
|
}
|
|
}
|
|
|
|
private static let timeoutDuration: TimeInterval = 60
|
|
|
|
private func processStep(paymentModel: TSPaymentModel?) -> Promise<TSPaymentModel> {
|
|
guard let paymentModel = paymentModel else {
|
|
return Promise(error: OWSAssertionError("Could not reload the payment record."))
|
|
}
|
|
|
|
let paymentStateBeforeProcessing = paymentModel.paymentState
|
|
|
|
return firstly(on: DispatchQueue.global()) { () -> Promise<Void> in
|
|
let formattedState = paymentModel.descriptionForLogs
|
|
|
|
guard PaymentsProcessor.canBeProcessed(paymentModel: paymentModel) else {
|
|
throw OWSAssertionError("Cannot process: \(formattedState)")
|
|
}
|
|
|
|
owsAssertDebug(paymentModel.isValid)
|
|
|
|
switch paymentModel.paymentState {
|
|
case .outgoingUnsubmitted:
|
|
return self.submitOutgoingPayment(paymentModel: paymentModel)
|
|
case .outgoingUnverified:
|
|
return self.verifyOutgoingPayment(paymentModel: paymentModel)
|
|
case .outgoingVerified:
|
|
return self.sendPaymentNotificationMessage(paymentModel: paymentModel)
|
|
case .outgoingSending,
|
|
.outgoingSent:
|
|
return Self.updatePaymentStatePromise(paymentModel: paymentModel,
|
|
fromState: paymentModel.paymentState,
|
|
toState: .outgoingComplete)
|
|
case .incomingUnverified:
|
|
return self.verifyIncomingPayment(paymentModel: paymentModel)
|
|
case .incomingVerified:
|
|
return Self.updatePaymentStatePromise(paymentModel: paymentModel,
|
|
fromState: .incomingVerified,
|
|
toState: .incomingComplete)
|
|
case .outgoingComplete,
|
|
.incomingComplete,
|
|
.outgoingFailed,
|
|
.incomingFailed:
|
|
throw OWSAssertionError("Cannot process: \(formattedState)")
|
|
@unknown default:
|
|
throw OWSAssertionError("Unknown paymentState: \(formattedState)")
|
|
}
|
|
}.map {
|
|
guard let latestModel = self.loadPaymentModelWithSneakyTransaction() else {
|
|
owsFailDebug("Could not reload payment model.")
|
|
throw PaymentsError.missingModel
|
|
}
|
|
|
|
let paymentStateAfterProcessing = latestModel.paymentState
|
|
if paymentStateBeforeProcessing == paymentStateAfterProcessing {
|
|
owsFailDebug("Payment state did not change after successful processing step: \(latestModel.descriptionForLogs)")
|
|
}
|
|
|
|
return latestModel
|
|
}
|
|
}
|
|
|
|
private func submitOutgoingPayment(paymentModel: TSPaymentModel) -> Promise<Void> {
|
|
owsAssertDebug(paymentModel.paymentState == .outgoingUnsubmitted)
|
|
|
|
guard !payments.isKillSwitchActive else {
|
|
do {
|
|
try Self.databaseStorage.write { transaction in
|
|
try paymentModel.updatePaymentModelState(fromState: .outgoingUnsubmitted,
|
|
toState: .outgoingUnverified,
|
|
transaction: transaction)
|
|
}
|
|
} catch {
|
|
owsFailDebug("Error: \(error)")
|
|
}
|
|
return Promise(error: PaymentsError.killSwitch)
|
|
}
|
|
|
|
if DebugFlags.paymentsSkipSubmissionAndOutgoingVerification.get() {
|
|
return Self.updatePaymentStatePromise(paymentModel: paymentModel,
|
|
fromState: .outgoingUnsubmitted,
|
|
toState: .outgoingUnverified)
|
|
}
|
|
|
|
// Only try to submit transactions within the first N minutes of them
|
|
// being initiated. If the app is terminated right after a transaction
|
|
// is initiated (before transaction it can be submitted), we don't want
|
|
// to submit it if the app is opened much later.
|
|
let submissionInterval = kMinuteInterval * 5
|
|
let createdDate = paymentModel.createdDate
|
|
let isRecentEnoughToSubmit = abs(createdDate.timeIntervalSinceNow) <= submissionInterval
|
|
|
|
guard isRecentEnoughToSubmit else {
|
|
// We mark the payment as "unverified", not "failed". It's conceivable
|
|
// that the transaction was submitted but the record was never marked
|
|
// as such (due to a race around app being terminated).
|
|
do {
|
|
try Self.databaseStorage.write { transaction in
|
|
try paymentModel.updatePaymentModelState(fromState: .outgoingUnsubmitted,
|
|
toState: .outgoingUnverified,
|
|
transaction: transaction)
|
|
}
|
|
} catch {
|
|
owsFailDebug("Error: \(error)")
|
|
}
|
|
Logger.warn("Not recent enough to submit.")
|
|
return Promise(error: PaymentsError.tooOldToSubmit)
|
|
}
|
|
|
|
guard let mcTransactionData = paymentModel.mcTransactionData,
|
|
mcTransactionData.count > 0,
|
|
let transaction = MobileCoin.Transaction(serializedData: mcTransactionData) else {
|
|
|
|
Self.handleIndeterminatePayment(paymentModel: paymentModel)
|
|
|
|
return Promise(error: PaymentsError.indeterminateState)
|
|
}
|
|
|
|
return firstly { () -> Promise<MobileCoinAPI> in
|
|
Self.paymentsImpl.getMobileCoinAPI()
|
|
}.then(on: DispatchQueue.global()) { (mobileCoinAPI: MobileCoinAPI) -> Promise<Void> in
|
|
return mobileCoinAPI.submitTransaction(transaction: transaction)
|
|
}.then(on: DispatchQueue.global()) { _ in
|
|
Self.updatePaymentStatePromise(paymentModel: paymentModel,
|
|
fromState: .outgoingUnsubmitted,
|
|
toState: .outgoingUnverified)
|
|
}.recover(on: DispatchQueue.global()) { (error: Error) -> Promise<Void> in
|
|
if case PaymentsError.inputsAlreadySpent = error {
|
|
// e.g. if we double-submit a transaction, it should become unverified,
|
|
// not stuck in unsubmitted.
|
|
return Self.updatePaymentStatePromise(paymentModel: paymentModel,
|
|
fromState: .outgoingUnsubmitted,
|
|
toState: .outgoingUnverified)
|
|
} else {
|
|
throw error
|
|
}
|
|
}
|
|
}
|
|
|
|
private func verifyOutgoingPayment(paymentModel: TSPaymentModel) -> Promise<Void> {
|
|
owsAssertDebug(paymentModel.paymentState == .outgoingUnverified)
|
|
|
|
if DebugFlags.paymentsSkipSubmissionAndOutgoingVerification.get() {
|
|
return firstly(on: DispatchQueue.global()) { () -> Void in
|
|
try Self.databaseStorage.write { transaction in
|
|
guard let paymentModel = TSPaymentModel.anyFetch(uniqueId: paymentModel.uniqueId,
|
|
transaction: transaction) else {
|
|
throw OWSAssertionError("Missing TSPaymentModel.")
|
|
}
|
|
paymentModel.update(mcLedgerBlockIndex: 111, transaction: transaction)
|
|
paymentModel.update(paymentState: .outgoingVerified, transaction: transaction)
|
|
}
|
|
}
|
|
}
|
|
|
|
return firstly { () -> Promise<MobileCoinAPI> in
|
|
Self.paymentsImpl.getMobileCoinAPI()
|
|
}.then(on: DispatchQueue.global()) { (mobileCoinAPI: MobileCoinAPI) -> Promise<Void> in
|
|
firstly { () -> Promise<MCOutgoingTransactionStatus> in
|
|
guard let mcTransactionData = paymentModel.mcTransactionData,
|
|
mcTransactionData.count > 0,
|
|
let transaction = MobileCoin.Transaction(serializedData: mcTransactionData) else {
|
|
|
|
Self.handleIndeterminatePayment(paymentModel: paymentModel)
|
|
|
|
throw PaymentsError.indeterminateState
|
|
}
|
|
|
|
return mobileCoinAPI.getOutgoingTransactionStatus(transaction: transaction)
|
|
}.map { (transactionStatus: MCOutgoingTransactionStatus) in
|
|
try Self.databaseStorage.write { transaction in
|
|
switch transactionStatus.transactionStatus {
|
|
case .unknown:
|
|
throw PaymentsError.verificationStatusUnknown
|
|
case .accepted(let block):
|
|
if !paymentModel.hasMCLedgerBlockIndex {
|
|
paymentModel.update(mcLedgerBlockIndex: block.index, transaction: transaction)
|
|
}
|
|
if let ledgerBlockDate = block.timestamp,
|
|
!paymentModel.hasMCLedgerBlockTimestamp {
|
|
paymentModel.update(mcLedgerBlockTimestamp: ledgerBlockDate.ows_millisecondsSince1970,
|
|
transaction: transaction)
|
|
}
|
|
try paymentModel.updatePaymentModelState(fromState: .outgoingUnverified,
|
|
toState: .outgoingVerified,
|
|
transaction: transaction)
|
|
|
|
// If we've verified a payment, our balance may have changed.
|
|
Self.paymentsImpl.updateCurrentPaymentBalance()
|
|
case .failed:
|
|
Self.markAsFailed(paymentModel: paymentModel,
|
|
paymentFailure: .validationFailed,
|
|
paymentState: .outgoingFailed,
|
|
transaction: transaction)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private class func markAsFailedPromise(paymentModel: TSPaymentModel,
|
|
paymentFailure: TSPaymentFailure,
|
|
paymentState: TSPaymentState) -> Promise<Void> {
|
|
Self.databaseStorage.write(.promise) { transaction in
|
|
markAsFailed(paymentModel: paymentModel,
|
|
paymentFailure: paymentFailure,
|
|
paymentState: paymentState,
|
|
transaction: transaction)
|
|
}
|
|
}
|
|
|
|
private class func markAsFailed(paymentModel: TSPaymentModel,
|
|
paymentFailure: TSPaymentFailure,
|
|
paymentState: TSPaymentState) {
|
|
Self.databaseStorage.write { transaction in
|
|
markAsFailed(paymentModel: paymentModel,
|
|
paymentFailure: paymentFailure,
|
|
paymentState: paymentState,
|
|
transaction: transaction)
|
|
}
|
|
}
|
|
|
|
private class func markAsFailed(paymentModel: TSPaymentModel,
|
|
paymentFailure: TSPaymentFailure,
|
|
paymentState: TSPaymentState,
|
|
transaction: SDSAnyWriteTransaction) {
|
|
paymentModel.update(withPaymentFailure: paymentFailure,
|
|
paymentState: paymentState,
|
|
transaction: transaction)
|
|
}
|
|
|
|
private func sendPaymentNotificationMessage(paymentModel: TSPaymentModel) -> Promise<Void> {
|
|
owsAssertDebug(paymentModel.paymentState == .outgoingVerified)
|
|
|
|
guard !paymentModel.isOutgoingTransfer else {
|
|
// No need to notify for "transfer out" transactions.
|
|
return Self.updatePaymentStatePromise(paymentModel: paymentModel,
|
|
fromState: .outgoingVerified,
|
|
toState: .outgoingSent)
|
|
}
|
|
|
|
return firstly(on: DispatchQueue.global()) { () -> Void in
|
|
try Self.databaseStorage.write { transaction in
|
|
guard let paymentModel = TSPaymentModel.anyFetch(uniqueId: paymentModel.uniqueId, transaction: transaction) else {
|
|
throw OWSAssertionError("Missing paymentModel.")
|
|
}
|
|
guard paymentModel.paymentState == .outgoingVerified else {
|
|
throw OWSAssertionError("Unexpected paymentState: \(paymentModel.descriptionForLogs).")
|
|
}
|
|
do {
|
|
let notify = {
|
|
if paymentModel.isDefragmentation {
|
|
PaymentsImpl.sendDefragmentationSyncMessage(paymentModel: paymentModel,
|
|
transaction: transaction)
|
|
} else {
|
|
_ = try PaymentsImpl.sendPaymentNotificationMessage(paymentModel: paymentModel,
|
|
transaction: transaction)
|
|
PaymentsImpl.sendOutgoingPaymentSyncMessage(paymentModel: paymentModel,
|
|
transaction: transaction)
|
|
}
|
|
}
|
|
|
|
try notify()
|
|
|
|
if DebugFlags.paymentsDoubleNotify.get() {
|
|
// Notify again.
|
|
try notify()
|
|
}
|
|
|
|
try paymentModel.updatePaymentModelState(fromState: .outgoingVerified,
|
|
toState: .outgoingSending,
|
|
transaction: transaction)
|
|
} catch {
|
|
if case PaymentsError.invalidModel = error {
|
|
try paymentModel.updatePaymentModelState(fromState: .outgoingVerified,
|
|
toState: .outgoingComplete,
|
|
transaction: transaction)
|
|
}
|
|
throw error
|
|
}
|
|
}
|
|
}.asVoid()
|
|
}
|
|
|
|
private func verifyIncomingPayment(paymentModel: TSPaymentModel) -> Promise<Void> {
|
|
owsAssertDebug(paymentModel.paymentState == .incomingUnverified)
|
|
|
|
return firstly { () -> Promise<MobileCoinAPI> in
|
|
Self.paymentsImpl.getMobileCoinAPI()
|
|
}.then(on: DispatchQueue.global()) { (mobileCoinAPI: MobileCoinAPI) -> Promise<MCIncomingReceiptStatus> in
|
|
|
|
guard let mcReceiptData = paymentModel.mcReceiptData,
|
|
let receipt = MobileCoin.Receipt(serializedData: mcReceiptData) else {
|
|
|
|
Self.handleIndeterminatePayment(paymentModel: paymentModel)
|
|
|
|
return Promise(error: PaymentsError.indeterminateState)
|
|
}
|
|
|
|
return mobileCoinAPI.getIncomingReceiptStatus(receipt: receipt)
|
|
}.map { (receiptStatus: MCIncomingReceiptStatus) in
|
|
try Self.databaseStorage.write { transaction in
|
|
switch receiptStatus.receiptStatus {
|
|
case .unknown:
|
|
throw PaymentsError.verificationStatusUnknown
|
|
case .received(let block):
|
|
paymentModel.update(mcLedgerBlockIndex: block.index,
|
|
transaction: transaction)
|
|
if let ledgerBlockDate = block.timestamp {
|
|
paymentModel.update(mcLedgerBlockTimestamp: ledgerBlockDate.ows_millisecondsSince1970,
|
|
transaction: transaction)
|
|
} else {
|
|
Logger.warn("Missing ledgerBlockDate.")
|
|
}
|
|
paymentModel.update(withPaymentAmount: receiptStatus.paymentAmount,
|
|
transaction: transaction)
|
|
try paymentModel.updatePaymentModelState(fromState: .incomingUnverified,
|
|
toState: .incomingVerified,
|
|
transaction: transaction)
|
|
|
|
// If we've verified a payment, our balance may have changed.
|
|
Self.paymentsImpl.updateCurrentPaymentBalance()
|
|
case .failed:
|
|
Self.markAsFailed(paymentModel: paymentModel,
|
|
paymentFailure: .validationFailed,
|
|
paymentState: .incomingFailed,
|
|
transaction: transaction)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class func handleIndeterminatePayment(paymentModel: TSPaymentModel) {
|
|
owsFailDebug("Indeterminate payment: \(paymentModel.descriptionForLogs)")
|
|
|
|
// A payment is indeterminate if we don't know if it exists
|
|
// in the ledger and have no way to resolve that. For example,
|
|
// a user might submit a payment, then scrub the payment before
|
|
// it is verified. In this case, the only way to recover is
|
|
// to discard the payment record and reconcile using the transaction
|
|
// history. Presumably this should only be possible if the user
|
|
// scrubs an unverified payment.
|
|
|
|
databaseStorage.write { transaction in
|
|
paymentModel.anyRemove(transaction: transaction)
|
|
|
|
Self.payments.scheduleReconciliationNow(transaction: transaction)
|
|
}
|
|
}
|
|
|
|
private static func updatePaymentStatePromise(paymentModel: TSPaymentModel,
|
|
fromState: TSPaymentState,
|
|
toState: TSPaymentState) -> Promise<Void> {
|
|
owsAssertDebug(paymentModel.paymentState == fromState)
|
|
|
|
return firstly(on: DispatchQueue.global()) { () -> Void in
|
|
try Self.databaseStorage.write { transaction in
|
|
guard let paymentModel = TSPaymentModel.anyFetch(uniqueId: paymentModel.uniqueId,
|
|
transaction: transaction) else {
|
|
throw OWSAssertionError("Missing TSPaymentModel.")
|
|
}
|
|
guard paymentModel.paymentState == fromState else {
|
|
throw OWSAssertionError("Unexpected paymentState: \(paymentModel.paymentState.formatted) != \(fromState.formatted).")
|
|
}
|
|
paymentModel.update(paymentState: toState, transaction: transaction)
|
|
}
|
|
}
|
|
}
|
|
}
|