question Re: how to keep Environmental property file in cache , which will be used across the processor. in Archives of Support Questions (Read Only)

how to keep Environmental property file in cache , which will be used across the processor.

saminathancs17 — Tue, 08 Nov 2016 18:18:14 GMT

Hi Team,

I have requirement like need to read the environment property file and keep in memory, also need to auto refresh is any update done in property file. Example Env.properties

parent_path = /sourcesystem/country/

Auth_key = 234234fsdaf234

password =**************

IN = india

i need to use the above property in my processor across the flow. Example in ListFile processor i want to use ${parent_path} , this should replace "/sourcesystem/country/ " value.

Re: how to keep Environmental property file in cache , which will be used across the processor.

gkeys — Tue, 08 Nov 2016 20:49:57 GMT

There are 2 ways to do it:

1) Custom properties file

put name=value pairs in custom property file: parent_path=/sourcesystem/country/
put custom property file in a location you choose on the nifi cluster
open the existing nifi.properties file
for property nifi.variable.registry.properties, set it to the path to your custom property file (or a csv of a list of custom property files)
in your processor, use ${parent_path} as you indicate

2) OS environment variable (best for sensitive values not to be exposed in a file)

set the OS environment variable: export Auth_key=234234fsdaf234
reference ${Auth_key} in your processor

The following links show more details

Re: how to keep Environmental property file in cache , which will be used across the processor.

saminathancs17 — Tue, 08 Nov 2016 22:19:28 GMT

I tried with 1) Custom properties file. This is working. Thank you Greg Keys

Re: how to keep Environmental property file in cache , which will be used across the processor.

venkataprasadma — Tue, 08 Nov 2016 22:20:37 GMT

Thanks @Greg Keys for your quick response. Custom Properties file is working absolutely fine

Re: how to keep Environmental property file in cache , which will be used across the processor.

gkeys — Tue, 08 Nov 2016 22:31:02 GMT

Glad it helped 🙂 (If you want to get more reuse from nifi, see first link in answer for reusing templates during development).