Not at my keyboard but does your NAR have the nifi-standard-services-api-nar as
a parent? That should be where DBCPService is defined
Sent from my iPhone
> On Jun 22, 2020, at 6:30 PM, Russell Bateman <r...@windofkeltia.com> wrote:
>
> I find myself obliged to pick back up a custom processor, written by someone
> else a few years ago (in the NiFi 0.7.x era) at my company, that makes use
> of DBCPService. While I think I understand the nuances of interface versus
> concrete controller class, etc. I probably need a push out the door onto the
> road of understanding why NiFi is not starting (and it's my fault). My JUnit
> test code works fine; I've created myself a loading problem maybe because I'm
> not including the proper auxiliary NAR (in this new, reduced world)? Thanks!
>
> 2020-06-22 16:11:37,139 ERROR [main] org.apache.nifi.NiFi Failure to launch
> NiFi due to java.util.ServiceConfigurationError:
> org.apache.nifi.processor.Processor: Provider
> com.imatsolutions.processor.JdbcToAttributes could not be instantiated
> java.util.ServiceConfigurationError: org.apache.nifi.processor.Processor:
> Provider com.imatsolutions.processor.JdbcToAttributes could not be
> instantiated
> at java.util.ServiceLoader.fail(ServiceLoader.java:232)
> at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
> at
> java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
> at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
> at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
> at
> org.apache.nifi.nar.StandardExtensionDiscoveringManager.loadExtensions(StandardExtensionDiscoveringManager.java:156)
> at
> org.apache.nifi.nar.StandardExtensionDiscoveringManager.discoverExtensions(StandardExtensionDiscoveringManager.java:131)
> at
> org.apache.nifi.nar.StandardExtensionDiscoveringManager.discoverExtensions(StandardExtensionDiscoveringManager.java:117)
> at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:942)
> at org.apache.nifi.NiFi.<init>(NiFi.java:158)
> at org.apache.nifi.NiFi.<init>(NiFi.java:72)
> at org.apache.nifi.NiFi.main(NiFi.java:301)
> *Caused by: java.lang.NoClassDefFoundError: org/apache/nifi/dbcp/DBCPService*
> at com.imatsolutions.processor.JdbcCommon.<clinit>(JdbcCommon.java:31)
> at
> com.imatsolutions.processor.AbstractJdbcTo.<clinit>(AbstractJdbcTo.java:290)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at java.lang.Class.newInstance(Class.java:442)
> at
> java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
> ... 9 common frames omitted
> Caused by: java.lang.ClassNotFoundException: org.apache.nifi.dbcp.DBCPService
> at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
> ... 17 common frames omitted
>
> I'm doing stuff like this inside my custom processor. (I hope this gives
> enough to go on.)
>
> public class JdbcToAttributes...
> {
> public static final PropertyDescriptor DBCP_SERVICE = new
> PropertyDescriptor.Builder()
> .name( "Database Connection Pooling Service" )
> .description( "The controller service that is used to obtain
> connection to database" )
> .required( true )
> .identifiesControllerService( DBCPService.class )
> .build();
> ...
>
> public void onTrigger( final ProcessContext context, final ProcessSession
> session, ProcessSessionFactory factory )
> throws ProcessException
> {
> ...
>
> final DBCPService dbcpService = context.getProperty( DBCP_SERVICE
> ).asControllerService( DBCPService.class );
> etc.
>
>
>
