Martin Mucha created NIFI-4762: ---------------------------------- Summary: unable to use groovy from InvokeScriptedProcessor Key: NIFI-4762 URL: https://issues.apache.org/jira/browse/NIFI-4762 Project: Apache NiFi Issue Type: Bug Components: Core Framework Affects Versions: 1.4.0 Reporter: Martin Mucha
Having following groovy, which just creates flowfile with sample json. Processor is configured such that it has script body in scriptBody property, while other property is empty. {code:groovy} import org.apache.nifi.processor.AbstractProcessor import org.apache.nifi.processor.ProcessContext import org.apache.nifi.processor.ProcessSession import org.apache.nifi.processor.Relationship import org.apache.nifi.processor.io.OutputStreamCallback class GenerateJsonProcessor extends AbstractProcessor{ def REL_SUCCESS = new Relationship.Builder().name("success").description('FlowFiles that were successfully processed are routed here').build() @Override Set<Relationship> getRelationships() { return Collections.singleton(REL_SUCCESS) } @Override void onTrigger(ProcessContext context, ProcessSession session) { def newFlowFile = session.create() def json = "{}" session.write(newFlowFile, new OutputStreamCallback() { @Override void process(OutputStream out) throws IOException { def writer = new OutputStreamWriter(out); writer.write(json) writer.close() } }) session.transfer(newFlowFile, REL_SUCCESS) // session.commit() } } processor = new GenerateJsonProcessor() {code} produces following error: {code:log} java.lang.reflect.UndeclaredThrowableException: null at com.sun.proxy.$Proxy137.validate(Unknown Source) at org.apache.nifi.processors.script.InvokeScriptedProcessor.customValidate(InvokeScriptedProcessor.java:465) at org.apache.nifi.components.AbstractConfigurableComponent.validate(AbstractConfigurableComponent.java:126) at org.apache.nifi.controller.AbstractConfiguredComponent.validate(AbstractConfiguredComponent.java:329) at org.apache.nifi.controller.StandardProcessorNode.isValid(StandardProcessorNode.java:969) at org.apache.nifi.controller.FlowController.getProcessorStatus(FlowController.java:2976) at org.apache.nifi.controller.FlowController.getGroupStatus(FlowController.java:2571) at org.apache.nifi.controller.FlowController.getGroupStatus(FlowController.java:2513) at org.apache.nifi.controller.FlowController.getGroupStatus(FlowController.java:2485) at org.apache.nifi.controller.FlowController.getControllerStatus(FlowController.java:2473) at org.apache.nifi.reporting.SiteToSiteProvenanceReportingTask.onTrigger(SiteToSiteProvenanceReportingTask.java:227) at org.apache.nifi.controller.tasks.ReportingTaskWrapper.run(ReportingTaskWrapper.java:41) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: javax.script.ScriptException: java.lang.NullPointerException at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.invokeImpl(GroovyScriptEngineImpl.java:405) at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.access$100(GroovyScriptEngineImpl.java:98) at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl$3.invoke(GroovyScriptEngineImpl.java:446) ... 19 common frames omitted Caused by: java.lang.NullPointerException: null at java.io.File.<init>(File.java:277) at org.apache.nifi.processor.util.StandardValidators$FileExistsValidator.validate(StandardValidators.java:784) at org.apache.nifi.components.PropertyDescriptor.validate(PropertyDescriptor.java:200) at org.apache.nifi.components.AbstractConfigurableComponent.validate(AbstractConfigurableComponent.java:116) at sun.reflect.GeneratedMethodAccessor489.invoke(Unknown Source) {code} where error lies outside of written code. I'd assume, that this line: org.apache.nifi.processor.util.StandardValidators$FileExistsValidator.validate(StandardValidators.java:784) is the most relevant from this stacktrace. Why are we validating `null` valued file for existence? -- This message was sent by Atlassian JIRA (v6.4.14#64029)