question Re: writing custom processors in nifi in Archives of Support Questions (Read Only)

writing custom processors in nifi

avijeetd — Mon, 13 Feb 2017 15:22:09 GMT

Hi All,

whats the best way to learn writing custom processors in nifi, looking for the documentation where the nifi internal framework and components are well explained. For example, what are controller services?

What is the different types of processors - for example what is the difference between GetXXX and FetchXXX processors?

Thanks,

Avijeet

Re: writing custom processors in nifi

aervits — Mon, 13 Feb 2017 20:22:42 GMT

Here's the link to nifi docs, https://nifi.apache.org/docs.html it has a lot of info but you can also search on this site as developers of nifi usually post a ton of material here https://community.hortonworks.com/spaces/63/data-flow-track.html?topics=Nifi&type=question

Re: writing custom processors in nifi

dzaratsian — Mon, 13 Feb 2017 21:06:09 GMT

@Avijeet Dash

Here's a good HCC article describing the process to build a custom NiFi processor: https://community.hortonworks.com/articles/4318/build-custom-nifi-processor.html

If you want to use existing processors/code and modify for your own purpose, then many of the standard processors can be found here: https://github.com/apache/nifi/tree/master/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard

If you check out these NiFi processors, you'll be able to view the code for getXXX versus fetchXXX in order to understand the difference (or to modify for your own custom use).