Notification page for selective URI's (F5 load balancer (version 11.2.1)

Hi All - Thank you for your responses. Here is the iRule that worked for us.

when RULE_INIT { set static::debug 0 set static::cookie_expire_time 86400 set static::refresh_time 10 set static::notification_page " Site unavailable" } when HTTP_REQUEST { set mod_path [lindex [split [string trim [string tolower [HTTP::path]] "/"] "/"] 0]

if { $static::debug } { 
    log local0. "The variable mod_path is: $mod_path"
    log local0. "Refresh Time: $static::refresh_time"
}

switch $mod_path {
    "aaaaaaa" -
    "bbbbbbb" -
    "ccccccc" {
        if { $static::debug } {
            log local0. "Matched aaaaaaa pool!"
        }
        pool http_pool      
        }
    "ddddddd" {
        if { (not [HTTP::cookie exists NotificationDone]) } {
            if { $static::debug } {
                log local0. "Cookie was not set in ddddddd! Setting cookie!"
            }
            HTTP::respond 200 content [subst $static::notification_page] Mime-Type "text/html" Set-Cookie "NotificationDone=[clock seconds]; path=/; domain=.[HTTP::host]"
        } elseif { [eval [[clock seconds] - [HTTP::cookie value "NotificationDone"]]] > $static::cookie_expire_time } {
            if { $static::debug } {
                log local0. "CNotification Done Value: [HTTP::cookie value "NotificationDone"] Expire Time: $static::cookie_expire_time"
            }
            HTTP::cookie remove "NotificationDone"
            HTTP::respond 200 content [subst $static::notification_page] Mime-Type "text/html" Set-Cookie "NotificationDone=[clock seconds]; path=/; domain=.[HTTP::host]"
        }
        pool http_pool      
        }
    "" -
    "eeeeeeee" {
        if { (not [HTTP::cookie exists NotificationDone]) } {
            if { $static::debug } {
                log local0. "Cookie was not set in eeeeeee! Setting cookie!"
            }
            HTTP::respond 200 content [subst $static::notification_page] Mime-Type "text/html" Set-Cookie "NotificationDone=[clock seconds]; path=/; domain=.[HTTP::host]"
        } elseif { [eval [[clock seconds] - [HTTP::cookie value "NotificationDone"]]] > $static::cookie_expire_time } {
            if { $static::debug } {
                log local0. "CNotification Done Value: [HTTP::cookie value "NotificationDone"] Expire Time: $static::cookie_expire_time"
            }
            HTTP::cookie remove "NotificationDone"
            HTTP::respond 200 content [subst $static::notification_page] Mime-Type "text/html" Set-Cookie "NotificationDone=[clock seconds]; path=/; domain=.[HTTP::host]"
        }
        pool http_pool  
        }
}

}