Github user patricker commented on the issue:
https://github.com/apache/nifi/pull/1478
@joewitt @pvillard31 I made the changes and squashed the commits since
about 50% of my changes were basically rolled back to the original code.
One issue... it doesn't work anymore. I'm looking for a little guidance on
what I might have missed (of course since there is no functional change maybe
it never worked and I was testing with an old build?). The error makes it sound
like it's a standard, 'can't find your class' error. Since the code all lives
in the same JAR I added a resource file to register the interface and class
(it's in the commit), which made no difference.
Here is the stack trace I'm getting:
> Caused by: org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'flowService': FactoryBean threw exception on object
creation; nested exception is
org.springframework.beans.factory.BeanCreationException: Error creating bean
with name 'flowController': FactoryBean threw exception on object creation;
nested exception is java.lang.RuntimeException: Unable to create Flow
Configuration DAO
at
org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:175)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1585)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:317)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1060)
~[spring-context-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.apache.nifi.web.contextlistener.ApplicationStartupContextListener.contextInitialized(ApplicationStartupContextListener.java:53)
~[na:na]
... 28 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'flowController': FactoryBean threw exception on object
creation; nested exception is java.lang.RuntimeException: Unable to create Flow
Configuration DAO
at
org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:175)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1585)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:317)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1060)
~[spring-context-4.2.4.RELEASE.jar:4.2.4.RELEASE]
at
org.apache.nifi.spring.StandardFlowServiceFactoryBean.getObject(StandardFlowServiceFactoryBean.java:48)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
at
org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
... 34 common frames omitted
Caused by: java.lang.RuntimeException: Unable to create Flow Configuration
DAO
at
org.apache.nifi.controller.FlowController.<init>(FlowController.java:480)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
at
org.apache.nifi.controller.FlowController.createStandaloneInstance(FlowController.java:378)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
at
org.apache.nifi.spring.FlowControllerFactoryBean.getObject(FlowControllerFactoryBean.java:74)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
at
org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168)
~[spring-beans-4.2.4.RELEASE.jar:4.2.4.RELEASE]
... 41 common frames omitted
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO
at
org.apache.nifi.controller.FlowController.createFlowConfigurationDAO(FlowController.java:851)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
at
org.apache.nifi.controller.FlowController.<init>(FlowController.java:478)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
... 44 common frames omitted
Caused by: java.lang.ClassNotFoundException:
org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
~[na:1.8.0_91]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_91]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
~[na:1.8.0_91]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_91]
at java.lang.Class.forName0(Native Method) ~[na:1.8.0_91]
at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_91]
at
org.apache.nifi.nar.NarThreadContextClassLoader.createInstance(NarThreadContextClassLoader.java:194)
~[nifi-nar-utils-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
at
org.apache.nifi.controller.FlowController.createFlowConfigurationDAO(FlowController.java:845)
~[nifi-framework-core-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
... 45 common frames omitted
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