question Re: Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code in Support Questions

Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code

pradhumankumar_ — Fri, 03 Mar 2017 22:09:21 GMT

If I am adding a property from UI it is giving me an error saying property is not valid

Although using UpdateAttribute processor we update the existing attribute but I am looking for ways to add new property in a processor say 'GetFile' and I want to add a property say 'nickname'

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Re: Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code

pradhumankumar_ — Fri, 03 Mar 2017 22:11:43 GMT

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Re: Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code

mburgess — Fri, 03 Mar 2017 22:23:37 GMT

If you are trying to add an attribute to a flow file, you can use UpdateAttribute for that. If you are trying to add a property to a processor, then it depends on the processor whether it supports dynamic (or "User-Defined") properties. If a processor does not support dynamic properties, then when you try to add one, the processor will be deemed invalid.

Re: Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code

pradhumankumar_ — Fri, 03 Mar 2017 22:36:22 GMT

@Matt Burgess

Thank your for your response.

Which all processor supports dynamic properties. Any link would be helpful.

Thanks,

Re: Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code

MattWho — Fri, 03 Mar 2017 22:49:18 GMT

@Pradhuman Gupta

Processors that support dynamic properties will include that information in their associated documentation.

You can access processor documentation specific the NiFi release you are running via help found in the menu located in the upper right corner of the NiFi UI.

You can also find the latest Apache NiFi version processor documentation here:

https://nifi.apache.org/docs.html

As an example of a processor that supports dynamic properties, look at GenerateFlowFile or UpdateAttribute.

Thanks,

Matt

Re: Can we add custom attribute in Apache NiFi on the fly in a processor without making a change in code

pradhumankumar_ — Fri, 03 Mar 2017 22:54:44 GMT

@Matt Clarke

Hi Matt,

Thank you I understood it now, I will go through documentation to learn more on this.

Thanks