question Re: NiFi - Extract content from AVRO FlowFile to attributes in Support Questions

NiFi - Extract content from AVRO FlowFile to attributes

AntonBV — Thu, 27 Apr 2023 11:50:02 GMT

Hi, I have flow file with an Avro record. Is there any chance to extract one field value from this record to attribute without converting record to Json format and without using the groovy script.

I need to extract field value from content to attribute for using it as a part of cache identifier in the further processor.

Thank you.

Re: NiFi - Extract content from AVRO FlowFile to attributes

cotopaul — Thu, 27 Apr 2023 17:21:04 GMT

@AntonBV,

You could give it a try with PartitionRecord, which will place the results of a RecordPath directly into a FlowFile Attribute. I am using it already on AVRO data so it should work for you as well.
PartitionRecord: https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi/nifi-standard-nar/1.20.0/org.apache.nifi.processors.standard.PartitionRecord/index.html
Record Path: https://nifi.apache.org/docs/nifi-docs/html/record-path-guide.html

Re: NiFi - Extract content from AVRO FlowFile to attributes

AntonBV — Thu, 27 Apr 2023 19:18:37 GMT

@cotopaul,
Thank you a lot. That is exactly what I need.