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Forum Discussion

wilcdr's avatar
wilcdr
Icon for Nimbostratus rankNimbostratus
Nov 02, 2017

Dynamically creating static variables per virtual server

Not sure if this is something that can even be done but I can't get it to work. I'm trying to create an iRule that I can generically use to attach to an undefined number of VIPs and I need to have ...
application delivery
devops
iRules
LTM
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Nov 03, 2017

look at this article about Some iRule commands temporarily suspend iRule processing

if you change the value every multiple times an hour, table may be a good solution. if this value is changed less than once an hour, the static value is still the best solution.

you can use array to store this variable

when HTTP_REQUEST {
    if { [HTTP::uri] starts_with "/changeVariable" } {
        set VIPName [string tolower [URI::query [HTTP::uri] VIPName]]
        set static::myVar(/Common/${VIPName}) foo
        log local0. "Variable name = static::myVar(/Common/${VIPName})"
        log local0. "value = $static::myVar(/Common/${VIPName})"
    }
}