Execute script - python example

[Madhukar Thota <ma...@gmail.com>]

Hi

I am looking for an example in python to convert a new field based on
attribute value.

Let say syslog.facilty holds value 23, based on the value i want to create
new field with text value like syslog.facility_label=LOCAL7

If this transformation possible with existing processors, please provide an
example or direct me to right processor.

Thanks in Advance,

Re: Execute script - python example

[Conrad Crampton <co...@SecData.com>]

Hi,
UpdateAttributes is (probably) the processor you need. Using ExpressionLanguage you can set a new attribute based on the value of another. Might get quite long though if you have a number of lookups to do.
On a side note, if you have the value that you want to map to a label (23 -> LOCAL7 in your example), and it is in the FlowFile content, then you can use ReplaceTextWithMapping to use a regexp and lookup to a mapping file (on the local drive – in the format of

value[tab]replacement\n

But this replaces the original value in and not adds to it in the FlowFile content, not attributes. Only including this as I wanted to do a similar thing but the lookups were from FlowFile not attributes.

HTH,
Conrad

From: Madhukar Thota <ma...@gmail.com>>
Reply-To: "users@nifi.apache.org<ma...@nifi.apache.org>" <us...@nifi.apache.org>>
Date: Thursday, 18 February 2016 at 04:15
To: "users@nifi.apache.org<ma...@nifi.apache.org>" <us...@nifi.apache.org>>
Subject: Execute script - python example

Hi

I am looking for an example in python to convert a new field based on attribute value.

Let say syslog.facilty holds value 23, based on the value i want to create new field with text value like syslog.facility_label=LOCAL7

If this transformation possible with existing processors, please provide an example or direct me to right processor.

Thanks in Advance,



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