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12-05-2020
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04-05-2021
05:40 AM
I'd like to provide an update on this, but the issue is not fully resolved. I found a jar in [maven repo](https://mvnrepository.com/artifact/org.apache.nifi/nifi-lookup-service-api/1.13.0) which has the `LookupService` This together with [org.apache.nifi.serialization.record.Record](https://mvnrepository.com/artifact/org.apache.nifi/nifi-record) I can compile and run the maven successfully. According to maven repo dependency both these should be declared with the scope `provided`. So I did that. In my processor now I have `LookupService` used as follows. public static final PropertyDescriptor CLIENT_LOOKUP_SERVICE =
new PropertyDescriptor.Builder()
.name("Client CSV Lookup service")
.identifiesControllerService(LookupService.class)
.required(true)
.build(); Also in the onShedule() I use it as follows @Override
public void onScheduled(ProcessContext context) {
this.clientNiFiLookupService = context.getProperty(CLIENT_LOOKUP_SERVICE).asControllerService(LookupService.class);
} Now the problem is I cannot package the nar. It doesn't like the I excluded the LookupService class. even if I remove provided scope it doesn't get included as well. [INFO] Generating documentation for NiFi extensions in the NAR...
[INFO] Found a dependency on version 1.13.0 of NiFi API
[ERROR] Could not generate extensions' documentation
java.lang.NoClassDefFoundError: org/apache/nifi/lookup/LookupService
...
...
[ERROR] Failed to execute goal org.apache.nifi:nifi-nar-maven-plugin:1.3.1:nar (default-nar) on project nifi-decoder-processors-nar: Execution default-nar of goal org.apache.nifi:nifi-nar-maven-plugin:1.3.1:nar failed: A required class was missing while executing org.apache.nifi:nifi-nar-maven-plugin:1.3.1:nar: org/apache/nifi/lookup/LookupService
[ERROR] -----------------------------------------------------
[ERROR] realm = extension>org.apache.nifi:nifi-nar-maven-plugin:1.3.1 So how do we use this LookupService in our custom processors?
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12-06-2020
10:24 PM
@Vin900, as this is an older post, you would have a better chance of receiving a resolution by starting a new thread. This will also be an opportunity to provide details specific to your environment that could aid others in assisting you with a more accurate answer to your question. You can link this thread as a reference in your new post.
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