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adrian_171483's avatar
adrian_171483
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Oct 06, 2016
Solved

Irule to "prepend" directory and retain URI

Hi. i have a requirement for the following:   type somesite.com/anything/anything   then we need to add /something into the URI without a redirect and retain the original client URI reques...
application delivery
LTM
  • adrian_171483's avatar
    adrian_171483
    Nov 04, 2016
    when HTTP_REQUEST {
    HTTP::header replace Host "[HTTP::host]:38080"
    log local0. "Sending request to server"
    Log the original path if debug is enabled
   if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::host][HTTP::uri]"}

    If the path doesn't already start with the base URI and version, insert it
   if {[string tolower [HTTP::path]] starts_with "/api/"}{
      HTTP::path "/imr-ce-web[HTTP::path]"

       Log the modified path if debug is enabled
      if {$::uri_mapping_debug}{log local0. "Modified path: path: [HTTP::host][HTTP::uri]"}
   }
}
adrian_171483's avatar
adrian_171483
Icon for Cirrus rankCirrus

so the Irule is not modifying the path for some reason ??

when RULE_INIT {

The base of the URI set ::uri_base "/mystring/"

Enable/disable debug logging to /var/log/ltm set ::uri_mapping_debug 1 }

when HTTP_REQUEST { Log the original path if debug is enabled if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::path]"}

If the path doesn't already start with the base URI and version, insert it if {not ([string tolower [HTTP::path]] starts_with "$::uri_base$::version_string")}{ HTTP::path [string map [list $::uri_base] [HTTP::path]]

   Log the modified path if debug is enabled
  if {$::uri_mapping_debug}{log local0. "Modified path: [string map [list $::uri_base "$::uri_base$::version_string/"] [HTTP::path]]"}

} }

Thu Nov 3 19:38:07 GMT 2016 info xxx tmm[14206] Rule /Common/PREPEND-DEV-TEST : Original path: /api/1/claimrefs Thu Nov 3 19:38:07 GMT 2016 info xxx tmm[14206] Rule /Common/PREPEND-DEV-TEST : Modified path: /api/1/claimrefs

adrian_171483's avatar
adrian_171483
Icon for Cirrus rankCirrus
Nov 04, 2016

So i have cracked it, 

    when HTTP_REQUEST {
    HTTP::header replace Host "[HTTP::host]:38080"
    log local0. "Sending request to server"
    Log the original path if debug is enabled
   if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::host][HTTP::uri]"}

    If the path always starts with /api/ prepend the uri with /something
   if {[string tolower [HTTP::path]] starts_with "/api/"}{
      HTTP::path "/something[HTTP::path]"

       Log the modified path if debug is enabled
      if {$::uri_mapping_debug}{log local0. "Modified path: path: [HTTP::host][HTTP::uri]"}
   }
}