在网络中部署默认公证节点的正确配置是什么？

Question

我使用两台不同的机器部署corda网络:在第一台机器中，我使用以下配置部署公证员和oracle服务：

公证

myLegalName="O=Notary,L=London,C=GB"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
p2pAddress="machine-ip1:10004"
notary : {
    validating : false
}
devMode : true

甲骨文

myLegalName="O=Oracle,L=London,C=GB"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
p2pAddress="machine-ip1:10001"
rpcSettings {
    address="0.0.0.0:10002"
    adminAddress="0.0.0.0:10003"
}
rpcUsers=[
    {
        password=test
        permissions=[
            ALL
        ]
        user=user1
    }
]
devMode : true

在第二个过程中，我部署了以下各方节点：

Party

myLegalName="O=Party,L=London,C=GB"
keyStorePassword : "cordacadevpass"
trustStorePassword : "trustpass"
p2pAddress="machine-ip2:10001"
rpcSettings {
    address="0.0.0.0:10002"
    adminAddress="0.0.0.0:10003"
}
rpcUsers=[
    {
        password=test
        permissions=[
            ALL
        ]
        user=user1
    }
]
devMode : true

一旦Party启动一个流程，构建一个事务，它就会失败，引发这个异常：

java.lang.IllegalStateException: Need to specify a notary for the state, or set a default one on TransactionBuilder 
        at net.corda.core.transactions.TransactionBuilder.addOutputState(TransactionBuilder.kt:172) 
        at net.corda.core.transactions.TransactionBuilder.addOutputState$default(TransactionBuilder.kt:171) 

呼叫功能是：

override fun call(): SignedTransaction {

    val notary = serviceHub.networkMapCache.getNotary(CordaX500Name("Notary", "London", "GB"))!!

    val issueState = CashOwningState(amount, ourIdentity)
    val issueCommand = Command(
        CashIssueContract.Commands.Issue(),
        issueState.participants.map { it.owningKey })

    val txBuilder = TransactionBuilder(notary).withItems(
        StateAndContract(issueState, CashIssueContract.TEST_CONTRACT_ID),
        issueCommand)

    txBuilder.verify(serviceHub)

    val fullySignedTx = serviceHub.signInitialTransaction(txBuilder)

    return subFlow(FinalityFlow(fullySignedTx, FINALIZING_TX.childProgressTracker()))
}

Notary似乎是在网络中找到的，但CordApp不承认它是公证人。

Answer 1

这不是CorDapp不承认公证人的问题。引发此异常的唯一地方是这里。

@JvmOverloads
fun addOutputState(state: ContractState, contract: ContractClassName, constraint: AttachmentConstraint = AutomaticHashConstraint): TransactionBuilder {
    checkNotNull(notary) { "Need to specify a notary for the state, or set a default one on TransactionBuilder initialisation" }
    addOutputState(state, contract, notary!!, constraint = constraint)
    return this
}

当通过传递公证人来实例化TransactionBuilder时，不执行检查所传递的一方是否实际上是公证人。

您必须尝试在代码中没有公证的情况下向TransactionBuilder添加输出状态。