Forum Discussion

jonathan_voigt_'s avatar
jonathan_voigt_
Icon for Nimbostratus rankNimbostratus
Nov 06, 2009

url rewrite and routing

Hi,

 

 

I need have a single dns (VSA) capable of routing to multiple pools based on context (e.g. /en/ or /fr/ , however, the web app's on these pools is the same. One supports english and one supports french, however there is no way to distinguish the two witout using separate pools.

 

 

I basically need to:

 

 

1. access a url with /en/ as context and route to pool 1, however, remove /en/ from uri before routing.

 

2. access a url with /fr/ as context and route to pool 2, however, remove /fr/ from uri before routing.

 

 

i know this is possible, but wondering if there is an easy way to accomplish this.

 

 

thanks in advance!

 

 

application delivery
dev
devops
iRules
  • jonathan_voigt_'s avatar
    jonathan_voigt_
    Icon for Nimbostratus rankNimbostratus
    Nov 06, 2009
    please disregard this one as it's not possible without setting some special cookie once user is determined (french/english) as there is no unique identifier to determine where to send user after english or french selection

     

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Nov 09, 2009
    You could check the start of the URI, select a pool, set a "pool" cookie to track the correct pool and insert a persistence cookie to ensure the client is persisted to the same language pool and same pool member. If that sounds like an option for you, reply and we can come up with an example.

     

     

    Aaron
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Nov 09, 2009
    Here's something to start with: 

     
 when HTTP_REQUEST { 
  
     Make sure to add a OneConnect profile with this iRule 
     http://devcentral.f5.com/wiki/default.aspx/AdvDesignConfig/oneconnect 
  
     If language already exists from prior HTTP request 
      on same TCP connection, unset it 
    if {[info exists language]}{ 
       unset language 
    } 
  
     Check requested path 
    switch -glob [HTTP::path] { 
       "/en/* { 
          set language "en" 
          pool pool_en 
       } 
       "/fr/*" { 
          set language "fr" 
          pool pool_fr 
       } 
       default { 
  
           No language prefix in the path,  
     so check if pool selector cookie has a value 
  if {[HTTP::cookie value "lang"] ne ""}{ 
  
      Select pool based on cookie value 
     switch [HTTP::cookie value "lang"] { 
        "en" { 
           pool pool_en 
        } 
        "fr" { 
           pool pool_fr 
        } 
     } 
          } 
       } 
    } 
  
     If there was a language prefix in the URI, remove it 
    if {[info exists language]}{ 
  
        Remove /en/ or /fr/ from the requested path 
       HTTP::path [string range [HTTP::path] 0 3] 
    } 
 } 
 when HTTP_RESPONSE { 
  
     Set a pool selector cookie in response 
    if {[info exists language]}{ 
  
       HTTP::cookie insert name "lang" value $language path / 
    } 
 }

    Aaron