我对FlowResponder下的呼叫流程有疑问。
如您所见，我仅需要为NodeB调用子流进行插入/更新。 我可以这样做吗？
当我尝试出现此错误时
java.io.IOException：有效负载无效 在net.corda.node.services.statemachine.FlowStateMachineImplKt.checkPayloadIs（FlowStateMachineImpl.kt：605）〜[corda-node-3.3-corda.jar :?] 在net.corda.node.services.statemachine.FlowStateMachineImpl.receive（FlowStateMachineImpl.kt：231）〜[corda-node-3.3-corda.jar :?] 在net.corda.node.services.statemachine.FlowSessionImpl.receive（FlowSessionImpl.kt：44）〜[corda-node-3.3-corda.jar :?] 在net.corda.node.services.statemachine.FlowSessionImpl.receive（FlowSessionImpl.kt：48）〜[corda-node-3.3-corda.jar :?] 在net.corda.core.flows.ReceiveTransactionFlow.call（ReceiveTransactionFlow.kt：74）〜[corda-core-3.3-corda.jar :?] 在net.corda.core.flows.ReceiveTransactionFlow.call（ReceiveTransactionFlow.kt：24）〜[corda-core-3.3-corda.jar :?] 在net.corda.core.flows.FlowLogic.subFlow（FlowLogic.kt：290）〜[corda-core-3.3-corda.jar :?] 在net.corda.core.flows.SignTransactionFlow.call（CollectSignaturesFlow.kt：212）〜[corda-core-3.3-corda.jar :?] 在net.corda.core.flows.SignTransactionFlow.call（CollectSignaturesFlow.kt：197）〜[corda-core-3.3-corda.jar :?] 在net.corda.core.flows.FlowLogic.subFlow（FlowLogic.kt：290）〜[corda-core-3.3-corda.jar :?] 在th.co.jventures.ddlp.cordapp.flows.CustomerIssueFlowResponder.call（CustomerIssueFlow.kt：196）〜[classes / :?] 在th.co.jventures.ddlp.cordapp.flows.CustomerIssueFlowResponder.call（CustomerIssueFlow.kt：177）〜[classes / :?] 在net.corda.node.services.statemachine.FlowStateMachineImpl.run（FlowStateMachineImpl.kt：96）[corda-node-3.3-corda.jar :?] 在net.corda.node.services.statemachine.FlowStateMachineImpl.run（FlowStateMachineImpl.kt：44）[corda-node-3.3-corda.jar :?] 在co.paralleluniverse.fibers.Fiber.run1（Fiber.java:1092）[quasar-core-0.7.9-jdk8.jar：0.7.9] 在co.paralleluniverse.fibers.Fiber.exec（Fiber.java:788）[quasar-core-0.7.9-jdk8.jar：0.7.9] 在co.paralleluniverse.fibers.RunnableFiberTask.doExec（RunnableFiberTask.java:100）[quasar-core-0.7.9-jdk8.jar：0.7.9] 在co.paralleluniverse.fibers.RunnableFiberTask.run（RunnableFiberTask.java:91）[quasar-core-0.7.9-jdk8.jar：0.7.9] 在java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）[？：1.8.0_181] 在java.util.concurrent.FutureTask.run $$$ capture（FutureTask.java:266）[？：1.8.0_181] 在java.util.concurrent.FutureTask.run（FutureTask.java）处[？：1.8.0_181] 在java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 201（ScheduledThreadPoolExecutor.java:180）[？：1.8.0_181] 在java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.run（ScheduledThreadPoolExecutor.java:293）[？：1.8.0_181] 在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）[？：1.8.0_181] 在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）[？：1.8.0_181] 在net.corda.node.utilities.AffinityExecutor $ ServiceAffinityExecutor $ 1 $ thread $ 1.run（AffinityExecutor.kt：62）上[corda-node-3.3-corda.jar :?] 原因：java.io.NotSerializableException：描述类型为描述符net.corda：Rd6hxg + 0oJROxKDXK8OerA ==的类型为类net.corda.core.transactions.SignedTransaction，但为java.util.List 在net.corda.nodeapi.internal.serialization.amqp.DeserializationInput.readObject $ node_api（DeserializationInput.kt：133）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.amqp.DeserializationInput.readObjectOrNull $ node_api（DeserializationInput.kt：109）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.amqp.DeserializationInput.readObjectOrNull $ node_api $ default（DeserializationInput.kt：108）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.amqp.DeserializationInput $ deserialize $ 1.invoke（DeserializationInput.kt：98）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.amqp.DeserializationInput.des（DeserializationInput.kt：80）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.amqp.DeserializationInput.deserialize（DeserializationInput.kt：96）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.amqp.AbstractAMQPSerializationScheme.deserialize（AMQPSerializationScheme.kt：123）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.SerializationFactoryImpl $ deserialize $ 1 $ 1.invoke（SerializationScheme.kt：111）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.core.serialization.SerializationFactory.withCurrentContext（SerializationAPI.kt：66）〜[corda-core-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.SerializationFactoryImpl $ deserialize $ 1.invoke（SerializationScheme.kt：111）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.SerializationFactoryImpl $ deserialize $ 1.invoke（SerializationScheme.kt：86）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.core.serialization.SerializationFactory.asCurrent（SerializationAPI.kt：80）〜[corda-core-3.3-corda.jar :?] 在net.corda.nodeapi.internal.serialization.SerializationFactoryImpl.deserialize（SerializationScheme.kt：111）〜[corda-node-api-3.3-corda.jar :?] 在net.corda.node.services.statemachine.FlowStateMachineImplKt.checkPayloadIs（FlowStateMachineImpl.kt：603）〜[corda-node-3.3-corda.jar：？]
此处启动流程代码
package th.co.jventures.ddlp.cordapp.flows
import co.paralleluniverse.fibers.Suspendable
import net.corda.confidential.IdentitySyncFlow
import net.corda.core.contracts.Command
import net.corda.core.contracts.UniqueIdentifier
import net.corda.core.contracts.requireThat
import net.corda.core.flows.*
import net.corda.core.identity.Party
import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder
import net.corda.core.utilities.ProgressTracker
import net.corda.core.utilities.unwrap
import th.co.jventures.ddlp.cordapp.contracts.CustomerContract
import th.co.jventures.ddlp.cordapp.core.commons.CordappConstants
import th.co.jventures.ddlp.cordapp.dto.CustomerIssueData
import th.co.jventures.ddlp.cordapp.services.CustomerService
import th.co.jventures.ddlp.cordapp.states.Address
import th.co.jventures.ddlp.cordapp.states.Consent
import th.co.jventures.ddlp.cordapp.states.CustomerState
import th.co.jventures.ddlp.cordapp.utils.CordappValidationUtils.Companion.requiredNotWhen
import java.util.*
@InitiatingFlow
@StartableByRPC
class CustomerIssueFlow(private val customerIssueData: CustomerIssueData) : FlowLogic<String>() {
companion object {
object GENERATING_TRANSACTION : ProgressTracker.Step("Generating transaction based on new IOU.")
object VERIFYING_TRANSACTION : ProgressTracker.Step("Verifying contract constraints.")
object SIGNING_TRANSACTION : ProgressTracker.Step("Signing transaction with our private key.")
object GATHERING_SIGS : ProgressTracker.Step("Gathering the counterparty's signature.") {
override fun childProgressTracker() = CollectSignaturesFlow.tracker()
}
object FINALISING_TRANSACTION : ProgressTracker.Step("Obtaining notary signature and recording transaction.") {
override fun childProgressTracker() = FinalityFlow.tracker()
}
fun tracker() = ProgressTracker(
GENERATING_TRANSACTION,
VERIFYING_TRANSACTION,
SIGNING_TRANSACTION,
GATHERING_SIGS,
FINALISING_TRANSACTION
)
}
override val progressTracker = tracker()
@Suspendable
override fun call(): String {
// Obtain a reference to the notary we want to use.
val notary = serviceHub.networkMapCache.notaryIdentities[0]
// Stage 1.
progressTracker.currentStep = GENERATING_TRANSACTION
// Generate an unsigned transaction.
val customerService = serviceHub.cordaService(CustomerService::class.java)
//#################################################################//
val pahNode = serviceHub.networkMapCache.getPeerByLegalName(CordappConstants.Node.PAH) as Party
val participants = listOf(ourIdentity, pahNode)
val customerStateAndRef = customerService.findByIdCardNoAndPartner(idCarNo = customerIssueData.customerData.idCardNo!!, partner = customerIssueData.customerData.partner!!)
//check duplicate customer
requiredNotWhen(customerStateAndRef == null, "Customer already registered")
val addresses = customerIssueData.customerData.addresses?.map { it ->
Address(
seqId = it.seqId,
id = UUID.randomUUID().toString(),
type = it.type,
houseNumber = it.houseNumber,
street = it.street,
subDistrict = it.subDistrict,
district = it.district,
province = it.province,
postalCode = it.postalCode,
countryCode = it.countryCode,
mobile = it.mobile,
telephone = it.telephone
)
}
val consentsArray = customerIssueData.customerData.consents?.map { it ->
Consent(
id = UUID.randomUUID().toString(),
partner = it.partner,
product = it.product,
reference = it.reference,
createDate = it.createDate
)
}
val linearId = UniqueIdentifier()
val customerState = CustomerState(
linearId = linearId,
externalCustomerNo = customerIssueData.customerData.externalCustomerNo!!,
title = customerIssueData.customerData.title!!,
firstName = customerIssueData.customerData.firstName!!,
middleName = customerIssueData.customerData.middleName!!,
lastName = customerIssueData.customerData.lastName!!,
idCardNo = customerIssueData.customerData.idCardNo!!,
email = customerIssueData.customerData.email!!,
partner = customerIssueData.customerData.partner!!,
product = customerIssueData.customerData.product!!,
consents = consentsArray,
status = CordappConstants.CustomerStatus.Active,
addresses = addresses,
participants = participants,
createDate = Date(),
createBy = customerIssueData.customerData.username!!,
changeDate = Date(),
changeBy = customerIssueData.customerData.username!!
)
val txCommand = Command(CustomerContract.Commands.Issue(), customerState.participants.map { it.owningKey })
val txBuilder = TransactionBuilder(notary)
.addOutputState(customerState, CustomerContract.CONTRACT_ID)
.addCommand(txCommand)
//#################################################################//
// Stage 2.
progressTracker.currentStep = VERIFYING_TRANSACTION
// Verify that the transaction is valid.
txBuilder.verify(serviceHub)
// Stage 3.
progressTracker.currentStep = SIGNING_TRANSACTION
// Sign the transaction.
val partSignedTx = serviceHub.signInitialTransaction(txBuilder)
// Stage 4.
progressTracker.currentStep = GATHERING_SIGS
// Send the state to the counterparty, and receive it back with their signature.
val session = (customerState.participants - ourIdentity).map { initiateFlow(it) }
val fullySignedTx = subFlow(CollectSignaturesFlow(partSignedTx, session, GATHERING_SIGS.childProgressTracker()))
// Stage 5.
progressTracker.currentStep = FINALISING_TRANSACTION
// Notarise and record the transaction in both parties' vaults.
subFlow(FinalityFlow(fullySignedTx, FINALISING_TRANSACTION.childProgressTracker()))
return customerState.linearId.toString()
}
}
@InitiatedBy(CustomerIssueFlow::class)
class CustomerIssueFlowResponder(val otherSideSession: FlowSession) : FlowLogic<SignedTransaction>() {// TwoPartyDealFlow.Acceptor(otherSideSession) {
@Suspendable
override fun call(): SignedTransaction {
// val finalTx = super.call()
println("######## START CustomerIssueFlowResponder ########################################################")
println(ourIdentity)
val signTransactionFlow = object : SignTransactionFlow(otherSideSession) {
override fun checkTransaction(stx: SignedTransaction) = requireThat {
// val output = stx.tx.outputs.single().data
//"This must be an CustomerState." using (output is CustomerState)
}
}
val stx = subFlow(ReceiveTransactionFlow(otherSideSession, checkSufficientSignatures = false))
val customerState = stx.tx.outputs.single().data as CustomerState
subFlow(CustomerPAHIssueOrUpdateFlow(customerState))
println("######## END CustomerIssueFlowResponder ########################################################")
return subFlow(signTransactionFlow)
}
}
和子流
package th.co.jventures.ddlp.cordapp.flows
import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.Command
import net.corda.core.contracts.UniqueIdentifier
import net.corda.core.contracts.requireThat
import net.corda.core.flows.*
import net.corda.core.identity.Party
import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder
import net.corda.core.utilities.ProgressTracker
import net.corda.core.utilities.loggerFor
import th.co.jventures.ddlp.cordapp.contracts.CustomerContract
import th.co.jventures.ddlp.cordapp.core.commons.CordappConstants
import th.co.jventures.ddlp.cordapp.services.CustomerService
import th.co.jventures.ddlp.cordapp.states.CustomerState
@InitiatingFlow
@StartableByService
@StartableByRPC
class CustomerPAHIssueOrUpdateFlow(private val customerState: CustomerState) : FlowLogic<String>() {
companion object {
val log = loggerFor<CustomerPAHIssueOrUpdateFlow>()
object GENERATING_TRANSACTION : ProgressTracker.Step("Generating transaction based on new IOU.")
object VERIFYING_TRANSACTION : ProgressTracker.Step("Verifying contract constraints.")
object SIGNING_TRANSACTION : ProgressTracker.Step("Signing transaction with our private key.")
object GATHERING_SIGS : ProgressTracker.Step("Gathering the counterparty's signature.") {
override fun childProgressTracker() = CollectSignaturesFlow.tracker()
}
object FINALISING_TRANSACTION : ProgressTracker.Step("Obtaining notary signature and recording transaction.") {
override fun childProgressTracker() = FinalityFlow.tracker()
}
fun tracker() = ProgressTracker(
GENERATING_TRANSACTION,
VERIFYING_TRANSACTION,
SIGNING_TRANSACTION,
GATHERING_SIGS,
FINALISING_TRANSACTION
)
}
override val progressTracker = tracker()
@Suspendable
override fun call(): String {
// Obtain a reference to the notary we want to use.
val notary = serviceHub.networkMapCache.notaryIdentities[0]
// Stage 1.
progressTracker.currentStep = GENERATING_TRANSACTION
// Generate an unsigned transaction.
val customerService = serviceHub.cordaService(CustomerService::class.java)
//#################################################################//
val pahNode = serviceHub.networkMapCache.getPeerByLegalName(CordappConstants.Node.PAH) as Party
//val participants = listOf(ourIdentity, pahNode)
val customerStateAndRef = customerService.findByIdCardNoAndPartner(idCarNo = customerState.idCardNo!!, partner = CordappConstants.PartnerNameList.PAH)
val txBuilder = TransactionBuilder(notary)
if (customerStateAndRef == null) {
log.info("===================================================")
val linearId = UniqueIdentifier()
val customerOutputState = customerState.copy(linearId = linearId, participants = listOf(pahNode), partner = CordappConstants.PartnerNameList.PAH)
val txCommand = Command(CustomerContract.Commands.Issue(), customerState.participants.map { it.owningKey })
log.info("Create new JVC Customer : {}", customerOutputState)
txBuilder.addOutputState(customerOutputState, CustomerContract.CONTRACT_ID)
.addCommand(txCommand)
log.info("===================================================")
} else {
log.info("===================================================")
val txCommand = Command(CustomerContract.Commands.Update(), customerState.participants.map { it.owningKey })
val customerOutputState = customerState.copy(participants = listOf(pahNode), partner = CordappConstants.PartnerNameList.PAH)
log.info("Update existing JVC Customer : {}", customerOutputState)
txBuilder.addInputState(customerStateAndRef)
txBuilder.addOutputState(customerOutputState, CustomerContract.CONTRACT_ID)
.addCommand(txCommand)
log.info("===================================================")
}
//#################################################################//
// Stage 2.
progressTracker.currentStep = VERIFYING_TRANSACTION
// Verify that the transaction is valid.
txBuilder.verify(serviceHub)
// Stage 3.
progressTracker.currentStep = SIGNING_TRANSACTION
// Sign the transaction.
val partSignedTx = serviceHub.signInitialTransaction(txBuilder)
// Stage 4.
progressTracker.currentStep = GATHERING_SIGS
// Send the state to the counterparty, and receive it back with their signature.
val session = (customerState.participants - ourIdentity).map { initiateFlow(it) }
val fullySignedTx = subFlow(CollectSignaturesFlow(partSignedTx, session, GATHERING_SIGS.childProgressTracker()))
// Stage 5.
progressTracker.currentStep = FINALISING_TRANSACTION
// Notarise and record the transaction in both parties' vaults.
/*For syndicate loan phase
//Initial default wallet with 0.00 THB
subFlow(WalletIssueFlow(WalletIssueData(
amount = BigDecimal.ZERO,
currency = DEFAULT_CURRENCY,
customerId = linearId.id.toString()
)))
*/
subFlow(FinalityFlow(fullySignedTx, FINALISING_TRANSACTION.childProgressTracker()))
return customerState.linearId.toString()
}
}
@InitiatedBy(CustomerPAHIssueOrUpdateFlow::class)
class CustomerPAHIssueOrUpdateFlowResponder(val otherPartyFlow: FlowSession) : FlowLogic<SignedTransaction>() {
@Suspendable
override fun call(): SignedTransaction {
val signTransactionFlow = object : SignTransactionFlow(otherPartyFlow) {
override fun checkTransaction(stx: SignedTransaction) = requireThat {
//val output = stx.tx.outputs.single().data
// "This must be an CustomerState." using (output is CustomerState)
}
}
return subFlow(signTransactionFlow)
}
}
答案 0 :(得分：1)
此问题与从流中调用子流无关。相反，问题出在CustomerIssueFlowResponder的这一行：
val stx = subFlow(ReceiveTransactionFlow(otherSideSession, checkSufficientSignatures = false))
从流的另一端没有相应的事务发送，导致以下类型的异常：
java.io.NotSerializableException：带描述符的描述类型 net.corda：Rd6hxg + 0oJROxKDXK8OerA ==应该是类别类 net.corda.core.transactions.SignedTransaction，但为java.util.List
代替调用ReceiveTransactionFlow，只需使用SignTransactionFlow返回的事务即可。