如何使用TokenSDK中的addIssueTokens Utility方法

Question

我想使用 addIssueTokens 将令牌添加到 TransactionBuilder。我的代码

@InitiatingFlow
@StartableByRPC
class Issue(val otherParty: Party) : FlowLogic<SignedTransaction>() {
    override val progressTracker = ProgressTracker()
    @Suspendable
    override fun call() : SignedTransaction{
        val jpyToken = createFungibleToken("JPY", 1000, otherParty)
        val gbToken = createFungibleToken("GB", 1000, otherParty)
        val notary = serviceHub.networkMapCache.notaryIdentities.single()
        val txBuilder = TransactionBuilder(notary)
        //may be add other output input
        //....
        
        //add token to txBuilder
        addIssueTokens(txBuilder, listOf(jpyToken,gbToken))
        txBuilder.verify(serviceHub)
        // Sign the transaction
        val ptx = serviceHub.signInitialTransaction(txBuilder, ourIdentity.owningKey)
        // Instantiate a network session with the shareholder
        val holderSession = initiateFlow(otherParty)
        val sessions = listOf(holderSession)
        // Ask the shareholder to sign the transaction
        val stx = subFlow(CollectSignaturesFlow(ptx, listOf(holderSession)))
        return subFlow<SignedTransaction>(FinalityFlow(stx, sessions))
    }
    fun createFungibleToken(symbol:String,amout:Long,target : AbstractParty) : FungibleToken{
        val tokenType = TokenType(symbol, 0)
        val issuedTokenType = IssuedTokenType(ourIdentity, tokenType)
        val amount = Amount<IssuedTokenType>(amout, issuedTokenType)
        return FungibleToken(amount, target)
    }
}
@InitiatedBy(Issue::class)
class IssueResponder(val otherPartySession: FlowSession) : FlowLogic<SignedTransaction>() {
    @Suspendable
    override fun call(): SignedTransaction  {
        val signTransactionFlow = object : SignTransactionFlow(otherPartySession) {
            override fun checkTransaction(stx: SignedTransaction) = requireThat {
            }
        }
        val txId = subFlow(signTransactionFlow).id
        return subFlow(ReceiveFinalityFlow(otherPartySession, expectedTxId = txId))
    }
}

shell: 开始流程

>>start com.template.flows.Issue otherParty: "O=PartyB,L=New York,C=US"
Starting
Collecting signatures from counterparties.
Starting
Broadcasting transaction to participants
Done
Flow completed with result: SignedTransaction(id=547B812BA5574168DA8085C87AADFCAFA2A098CF62F375C21D450C0FE2402547)

好像Flow完成了。但是我查了partyB的数据库，vault_states table .

里面没有数据

为什么？

ps.i 知道如何使用 com.r3.corda.lib.tokens.workflows.flows.rpc.IssueTokens flow

Answer 1

在发行代币时，holder不是必需的签名者；尝试从发起者和响应者流中删除 CollectSignaturesFlow 和 SignTransactionFlow 调用；只保留 FinalityFlow 和 ReceiveFinalityFlow.

您可以看到here所需的签名者是：

发行issuer。
holder 就搬家了。
赎回issuer和holder。

而且合同还说 here 可能还有其他签名者；所以我不能 100% 确定这就是问题的原因。
尝试删除签名流程并重新运行您的测试；让我知道它是否有效。
另一件事，检查启动节点的日志（日志位于节点文件夹结构内的 logs 文件夹内）；有什么错误吗？

如何使用TokenSDK中的addIssueTokens Utility方法

How to use addIssueTokens Utility method in TokenSDK

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