2014-08-22 8:26 GMT+03:00 Yuheng Du <yuhe...@clemson.edu>:
> Hi Guys, I have a perl program who uses Search:Elasticsearch to do a
> query based on input variables.
>
> The two input variables are given in a Single rule, When I use 'spawn'
> action to execute this script:
>
> #check if stats requirements are met, 1 sigma is used.
> type=Single
> ptype=RegExp
> pattern=\"reading(\d+)\"\s+=>\s+([-+]?\d*\.?\d+)
> desc=CAPTURE_READING_$1
> action=write - reading$1 of %id $2;\
> spawn /usr/bin/perl /home/yuheng/Downloads/SEC/sec-2.7.5/calMean.pl
> "%id" "$2"
>
> it gives me an error:
>
> [NoNodes] ** No nodes are available: [localhost:9200], called from sub
> Search::Elasticsearch::Transport::__ANON__ at
> /usr/local/share/perl/5.14.2/Try/Tiny.pm
> line 81.Child 3215 terminated with non-zero exitcode 255 ( /usr/bin/perl
> /home/yuheng/Downloads/SEC/sec-2.7.5/calMean.pl "aiken_7" "0.0" )
>
>
> But if I do a SingleWithScript like this:
> #check if stats requirements are met, 1 sigma is used.
> type=SingleWithScript
> ptype=RegExp
> pattern=\"reading(\d+)\"\s+=>\s+([-+]?\d*\.?\d+)
> desc=CAPTURE_READING_$1
> script=/usr/bin/perl /home/yuheng/Downloads/SEC/sec-2.7.5/calMean.pl
> "%id" "$2"
> action=write - reading$1 of %id $2;\
>
> It compiles, but the second argument ""%id", which is an action variable
> from another rule, could not be passed to the perl script correctly.
>
The action list variables can be used only in action lists (rule fields
which have the 'action', 'action2', etc keywords). Due to the design of
action list, action list variables have to be substituted right before the
action list gets executed, but this often happens way after the rule
matching. Using action list variables in all rule fields would thus involve
two substitution rounds which would make the design and clarity of the
rules more complex. (For example, the timestamp variable %t could hold both
the time of rule matching and action list execution.) For the sake of
simplicity, action list variables are only visible in action lists and
their substitution takes place at the list execution.
kind regards,
risto
>
> Can anyone help?
>
> Thanks,
>
> Yuheng
>
>
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