url redirect based on Geo location and VIP active

I've modified the irule for url redirect based on Geo location by continent. I also need to include this redirect invokes when only the VIP is in active. Let me know how to achieve

when HTTP_REQUEST { if {[HTTP::path] eq “/” } { set client_ip [IP::client_addr] set client_continent [whereis $client_ip continent] if { $client_ip ne “” } { switch [string toupper [whereis $client_ip continent]] { “NA” { HTTP::redirect “http://app-NA.abc.com” } “EU” { HTTP::redirect “http://app-EMEA.abc.com” } “AS” { HTTP::redirect “http://app-APAC.abc.com” } “SA” { HTTP::redirect “http://app-NA.abc.com” } “AF” { HTTP::redirect “http://app-EMEA.abc.com” } “OC” { HTTP::redirect “http://app-APAC.abc.com” } default { HTTP::redirect “http://app-NA.abc.com” } } } }

Virtual Server status is returned from the pool status that is associated to the VS. So you could nest an if condition checking the pool for each VS before redirecting:

eg:

    .
    .
    switch  [whereis [IP::client_addr] continent] {
    “NA” { 
        if { [active_members my_NA_pool] < 1 } { 
            HTTP::redirect “http://app-NA.abc.com” 
        }
    .
    .

Ok, so I've taken another look at this as sounds like you want to have a default redirect in the event the pool member (and therefore the VIP is down). It was starting to get messy with nested 'if' statements within the switch. Also there was a lot of repetition so thought using a loop may be better, rather than adding more conditions.

I've put your redirects and pool details for each region in a datagroup and added them to an array so that the variable can be used in the loop. I've tested the syntax but not the functionality

Please leave feedback

DATAGROUP:

ltm data-group internal geo_dg {
    records {
        NA {
            data "POOL my_NA_pool|URL http://app-NA.abc.com" 
        }
        EU { 
            data "POOL my_EU_pool|URL http://app-EMEA.abc.com"
        }
        AS { 
            data "POOL my_AS_pool|URL http://app-APAC.abc.com"
        }
        SA { 
            data "POOL my_SA_pool|URL http://app-NA.abc.com"
        }
        AF { 
            data "POOL my_AF_pool|URL http://app-EMEA.abc.com"
        }
        OC { 
            data "POOL my_AF_pool|URL http://app-APAC.abc.com"
        }
    }
    type string
}

IRULE:

when HTTP_REQUEST {

    set dgLocation geo_dg
    set regions {NA EU AS SA AF OC}
    set ipLocation [whereis [IP::client_addr] continent]
    set defaultRedirect "http://app-NA.abc.com"

    if {[HTTP::path] eq "/" } { 
         check GeoLocation matches what is defined in the datagroup
        if {[class match $ipLocation equals $dgLocation]} {
            loop through the regions in the list 
            foreach region $regions {
                 create array based on DG values 
                array set geoArray [split [string trim [class lookup $region $poolDg]] "|"]
                 check for active members
                if { [active_members $geoArray(POOL)] >= 1 } {
                    HTTP::redirect $geoArray(URL)
                } else {
                     default redirect if pool is down
                    HTTP::redirect $defaultRedirect
                }
                array unset geoArray
            }

        } else {
             default redirect if GeoLocation doesn't match datagroup
            HTTP::redirect $defaultRedirect
        }
    }
}