在流测试中重新启动节点会引发错误

Question

我的节点有一个自定义配置文件，事件流程如下：
1. 启动我的网络
2.运行创建令牌类型 3 的流
。停止节点
4.将令牌类型标识符添加到自定义配置
5。启动节点
6.现在，我的其他流可以从自定义配置中读取该值并完成其工作

// Custom config map
Map<String, String> customConfig = new LinkedHashMap<>();
// Assign custom config to nodes
network = new MockNetwork(new MockNetworkParameters().withCordappsForAllNodes(ImmutableList.of(
TestCordapp.findCordapp("xxx").withConfig(customConfig),
// Run the network and my flow that creates some value to be stored in the config
// Stop the nodes
network.stopNodes();
// Add new value to custom config
customConfig.put("new_value", someNewValue);
// Start the nodes
network.startNodes();

但是第二次启动网络时出现此错误：

java.lang.IllegalStateException: Unable to determine which flow to use when responding to: 
com.r3.corda.lib.tokens.workflows.flows.rpc.ConfidentialRedeemFungibleTokens. 
[com.r3.corda.lib.tokens.workflows.flows.rpc.ConfidentialRedeemFungibleTokensHandler, 
com.r3.corda.lib.tokens.workflows.flows.rpc.ConfidentialRedeemFungibleTokensHandler] are all registered 
with equal weight.

Answer 1

corda-app 中是否存在多个流？尝试覆盖现有流时遇到类似的错误。在deployNodes gradle task下的节点定义中添加flowOverride后，问题就消失了。

例：

node {
name "O=PartyA,L=London,C=GB"
p2pPort 10004
rpcSettings {
address("localhost:10005")
adminAddress("localhost:10006")
}
rpcUsers = [[user: "user1", "password": "test", "permissions": ["ALL"]]]
flowOverride("com.example.flow.ExampleFlow.Initiator",
"com.example.flow.OverrideAcceptor")
}

有关此内容的更多信息，请参见以下链接： https://docs.corda.net/head/flow-overriding.html#configuring-responder-flows https://lankydan.dev/2019/03/02/extending-and-overriding-flows-from-external-cordapps