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Daniel_104432's avatar
Daniel_104432
Icon for Nimbostratus rankNimbostratus
Sep 19, 2011

How to read a string + value from a data group list

Hello there,

 

i've got some trouble with a datagroup list. We are using a lot of lists to match strings against client host requests but now I want to use the value of the matched string for a redirect destination.

 

 

So in detail i want to do something like this:

 

1. A client asks for bla.foobar.org

 

2. The Bigip is getting the request and is matching it against the data group list foobar_list.

 

3. The host matches and the bigip is doing a redirect to "www.foobar.org/bla"

 

 

class foobar_list {

 

"bla.foobar.org" { "www.foobar.org/bla" }

 

}

 

 

 

The reason I want to do it like this is to get away from one irule per redirect. We have way to much irules only for simple redirects. But I don't understand how to use the value.

 

 

I hope something like this is working:

 

if { [matchclass [HTTP::host] contains $::foobar_list] }

 

{

 

HTTP::respond 301 Location [vlaue of bla.foobar.org]

 

}

 

 

I only need to know how to get the value :)

 

 

thanks in advance.

 

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  • Michael_Yates's avatar
    Michael_Yates
    Icon for Nimbostratus rankNimbostratus
    Sep 19, 2011
    Hi Daniel,

    I created an example for you. In my example I capture the "-value" of a matching "-name" and store it in a variable. In the if statement, if a match was found and the value is not empty then it will redirect to the location.

    I am providing the Data Group and the iRule so that you can make modifications and test with hit. 

    
class string_value_test_group {
   {
      "/foo" { "http://www.yahoo.com" }
      "/foofoo" { "http://www.google.com" }
      "/foofoofoo" { "http://www.msn.com" }
   }
}

when HTTP_REQUEST {
set redirecturl [class match -value [string tolower [HTTP::uri]] starts_with string_value_test_group ]
if { $redirecturl ne "" } {
HTTP::respond 301 Location $redirecturl
}
}

    Hope this helps.