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fun verifyCustomPaymentRailSettlement(obligation: Obligation<TokenType>, payment: CustomPayment<TokenType>): VerifyResult { | |
val oracleService = serviceHub.cordaService(MyPaymentRailService::class.java) | |
val result = oracleService.hasPaymentSettled(payment, obligation) | |
// .. check result status, etc.. | |
} |
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@CordaService | |
class MyPaymentRailService(val services: AppServiceHub) : SingletonSerializeAsToken() { | |
// API Methods here | |
// checkObligeeReceivedPayment(..) | |
// hasPaymentSettled(..) | |
} |
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class VerifySettlement(private val otherSession: FlowSession) : FlowLogic<Unit>() { | |
// .. omitting .. | |
@Suspendable | |
override fun call() { | |
// .. omitting .. | |
// 4. Handle different settlement methods. | |
val verifyResult = when (settlementMethod) { |
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abstract class CustomMakeOffLedgerPayment<T: TokenType>( | |
val amount: Amount<T>, | |
private val obligationStateAndRef: StateAndRef<Obligation<*>>, | |
open val settlementMethod: OffLedgerPayment<*>, | |
override val progressTracker: ProgressTracker = MakeOffLedgerPayment.tracker() | |
): MakeOffLedgerPayment<T>(amount, obligationStateAndRef, settlementMethod, progressTracker) { | |
@Suspendable | |
override fun setup() { | |
// Perform any setup tasks needed for your payment rail | |
} |
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abstract class CustomMakeOffLedgerPayment<T: TokenType>( | |
val amount: Amount<T>, | |
private val obligationStateAndRef: StateAndRef<Obligation<*>>, | |
open val settlementMethod: OffLedgerPayment<*>, | |
override val progressTracker: ProgressTracker = MakeOffLedgerPayment.tracker() | |
): MakeOffLedgerPayment<T>(amount, obligationStateAndRef, settlementMethod) { | |
@Suspendable | |
override fun setup() { | |
// Perform any setup tasks needed for your payment rail | |
} |
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data class CustomPayment<T : TokenType>( | |
override val paymentReference: PaymentReference, | |
override val amount: Amount<T>, | |
override var status: PaymentStatus = PaymentStatus.SENT | |
) : Payment<T> { | |
override fun toString(): String { | |
return "Amount: $amount, Transaction ID: $paymentReference, Status: $status" | |
} | |
} |
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data class CustomSettlementMethod( | |
override val accountToPay: String, | |
override val settlementOracle: Party, | |
override val paymentFlow: Class<CustomMakeOffLedgerPayment<*>> = CustomMakeOffLedgerPayment::class.java | |
) : OffLedgerPayment<MakeCustomPayment<*>> { | |
override fun toString(): String { | |
return "Pay account $accountToPay and use $settlementOracle as settlement Oracle." | |
} | |
} |
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@CordaService | |
class MyPaymentRailService(val services: AppServiceHub) : SingletonSerializeAsToken() { | |
// API methods here | |
// makePayment() | |
// checkBalance(), etc.. | |
} |
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@CordaService | |
class MyPaymentRailService(val services: AppServiceHub) : SingletonSerializeAsToken() { | |
// API methods here | |
// makePayment() | |
// checkBalance(), etc.. | |
} |
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@InitiatingFlow | |
@StartableByRPC | |
class IOUSettleFlow(val linearId: UniqueIdentifier, val amount: Amount<Currency>): FlowLogic<SignedTransaction>() { | |
@Suspendable | |
override fun call(): SignedTransaction { | |
// Step 1. Retrieve the IOU state from the vault. | |
val queryCriteria = QueryCriteria.LinearStateQueryCriteria(linearId = listOf(linearId)) | |
val iouToSettle = serviceHub.vaultService.queryBy<IOUState>(queryCriteria).states.single() | |
val counterparty = iouToSettle.state.data.lender |
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