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shopkeeper56_23's avatar
shopkeeper56_23
Icon for Cirrostratus rankCirrostratus
Sep 20, 2016

Recursive Data Group Match

Hi,

 

I'm trying to perform a recursive binding of variables based off information in a large source string of values and a Data Group.

 

Here is the pseudo-logic of what I'm trying to perform...

 

DataGroup String "A" = Value "1" String "B" = Value "2" String "C" = Value "3"

 

Source_String : "A | C | Z | F | G | H | T | B"

 

I would like to recursively search $Source_String and bind the corresponding Data Group value for each match to a new variable. In the above example the desired variable output would be...

 

$Desired_Variable = "1 3 2"

 

Any ideas?

 

application delivery
BIG-IP Access Policy Manager (APM)
iRules

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  • Kai_Wilke's avatar
    Kai_Wilke
    Icon for MVP rankMVP
    Sep 20, 2016

    Hi Shopkeeper56,

    you may try the iRule snippet below...

    Datagroup:

    ltm data-group internal DG_RESOLVE_CHARS {
    records {
        A {
            data 1
        }
        B {
            data 2
        }
        C {
            data 3
        }
    }
    type string
}
`

    iRule Snippet:

    set input "A | C | Z | F | G | H | T | B"
set output ""
foreach char [split $input "|"] {
    if { [set dg_value [class match -value [string trim $char] equals DG_RESOLVE_CHARS]] ne "" } then {
        lappend output $dg_value
    }
}
log local0.debug "Output: \"$output\""

    Logfile:

    Sep 20 17:15:27 f5-02 debug tmm[11263]: Rule /Common/Debug : Output: "1 3 2"

    Cheers, Kai