Function to divide a number by X

fadjer · January 15, 2018, 4:01pm

Hi,

I have a field in bytes format and I need to displayed it in a dashboard in megabytes format.

After reading in existing posts, the only available way seems to be the use of a pipeline, by making the conversion in a function and adding an new field.

But I did not notice any mathematical function to allow division, ideally integer division…

I really want to avoid writing a plugin for a such basic stuff

Do you know any existing add-on where can I find this kind of functions?

Any other solution for my problem is welcome

Thanks in advance

jochen · January 15, 2018, 4:02pm

This functionality has been implemented as arithmetic operators, e. g. / for division.

github.com

Graylog2/graylog-plugin-pipeline-processor/blob/2.4.0/plugin/src/test/resources/org/graylog/plugins/pipelineprocessor/parser/arithmetic.txt

rule "arithmetic operators"
when
    1.0 + 1.0 == 2.0 &&
    8 * 2 > 15 &&
    double_valued_func() / 20.0 == 0.0 &&
    21 % 20 == 1 &&
    10.0 / 20.0 == 0.5 &&
    +10.0 / -5.0 == -2.0 &&
    -double_valued_func() == -0.0 &&
    double_valued_func() + 1.0 > 0.0
then
    trigger_test();
end

fadjer · January 15, 2018, 4:14pm

Thanks for your quick answer.

It will be nice if you could improve this part of the documentation:

http://docs.graylog.org/en/2.4/pages/pipelines/rules.html

jochen · January 15, 2018, 4:35pm

Feels free to create a feature request (or even a pull request) in the documentation repository:

fadjer · January 15, 2018, 5:40pm

Just Done! Thanks again

github.com/Graylog2/documentation

Improve functions documentation

opened 05:39PM - 15 Jan 18 UTC

fadjer

enhancement feature triaged

In the 2.4 documentation you do not speak about arithmetic operations, and when …we read this part of the documentation we suppose that we must write custom functions for that: http://docs.graylog.org/en/2.4/pages/pipelines/rules.html **There are two different types of actions: Function calls Variable assignments** .... Could you please improve function documentation and detail the existence and the use of arithmetic operator like in the example just-after: https://github.com/Graylog2/graylog-plugin-pipeline-processor/blob/2.4.0/plugin/src/test/resources/org/graylog/plugins/pipelineprocessor/parser/arithmetic.txt Many Thanks

system · January 29, 2018, 5:41pm

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Function to divide a number by X

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