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corda - java.lang.IllegalStateException : Was not expecting to find existing database transaction 错误

In lại 作者：行者123 更新时间：2023-12-02 09:12:30 40 4
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java.lang.IllegalStateException: Was not expecting to find existing database transaction on current strand when setting database: Thread[Test worker,5,main], net.corda.nodeapi.internal.persistence.DatabaseTransaction@3e9f2c2e
    at net.corda.nodeapi.internal.persistence.CordaPersistence.(CordaPersistence.kt:79)
    at net.corda.node.internal.AbstractNodeKt.configureDatabase(AbstractNode.kt:900)
    at net.corda.node.internal.AbstractNode.initialiseDatabasePersistence(AbstractNode.kt:668)
    at net.corda.testing.node.internal.InternalMockNetwork$MockNode.initialiseDatabasePersistence(InternalMockNetwork.kt:315)
    at net.corda.node.internal.AbstractNode.start(AbstractNode.kt:208)
    at net.corda.testing.node.internal.InternalMockNetwork$MockNode.start(InternalMockNetwork.kt:245)
    at net.corda.testing.node.internal.InternalMockNetwork.createNodeImpl(InternalMockNetwork.kt:377)
    at net.corda.testing.node.internal.InternalMockNetwork.createNode(InternalMockNetwork.kt:363)
    at net.corda.testing.node.internal.InternalMockNetwork.createNode(InternalMockNetwork.kt:358)
    at net.corda.testing.node.internal.InternalMockNetwork.createNotaries$node_driver(InternalMockNetwork.kt:211)
    at net.corda.testing.node.internal.InternalMockNetwork.(InternalMockNetwork.kt:194)
    at net.corda.testing.node.internal.InternalMockNetwork.(InternalMockNetwork.kt:100)
    at net.corda.testing.node.MockNetwork.(MockNetwork.kt:217)
    at net.corda.testing.node.MockNetwork.(MockNetwork.kt:211)
    at com.synechron.cordapp.flows.FlowUnitTests.setup(FlowUnitTests.kt:29)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:114)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:57)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:66)
    at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
    at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
    at com.sun.proxy.$Proxy1.processTestClass(Unknown Source)
    at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:109)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:146)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:128)
    at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
    at java.lang.Thread.run(Thread.java:748)

我有用于测试 Corda 自定义流程的测试类，个别测试用例运行成功，但当我运行类本身时抛出上述异常。流程只有创建线性状态的代码，如果vault上已经存在，则使用现有状态，然后分发给参与者。没有特别的逻辑或 DB session 打开。

测试类是为同一项目的其他流程编写的，无一异常(exception)。不知道为什么它会在 test cases 执行之间泄漏 DB tx.

1 Câu trả lời

sử dụng MockNode 时，您应该在执行访问其数据库的操作之前显式打开特定节点的数据库事务:

mockNodeA.transaction {
    // Access to the node's database...
}

您可以在此处查看示例:https://github.com/corda/cordapp-example/blob/release-V3/kotlin-source/src/test/kotlin/com/example/flow/IOUFlowTests.kt#L110

如果你没有这样做:

  • 你可能不小心访问了错误节点的数据库
  • 如果您连续运行多个测试套件，则在下一个测试套件中创建新的 MockNetwork 时，您将得到一个 IllegalStateException

关于corda - java.lang.IllegalStateException : Was not expecting to find existing database transaction 错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50559896/

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