Create iRule to change URI Path to parse last directory

Hi,

Could you tell us what's wrong when you use this iRule ?

And last thing, it would be better to use switch instead of multiple if / else if .

Hi,

I've rewritten the rule using switch -glob as suggested. Not sure if this works yet but will test soon. With /cache/ I'm trying parse the last directory and everything after that. e.g. “eat9.raspberry.pies.com/cache/1.1.201311042258/js/jquery.js” is changed to “eat9.raspberry.pies.com/js/jquery.js” but doesn't seem to be working.

I get error item not found.

elseif { [HTTP::host] eq "eat9.raspberry.pies.com" }    { 
 switch -glob [HTTP::uri] {  
"/fonts/" -
"/css/" -
"/templates/" -
"/js/" -
"/images/" -
"/pages/"  { pool PL_eat9.raspberry.pies.com_1444 
    }
"/cache/" {
set depth [URI::path [HTTP::uri] depth]
set last_dir [URI::path [HTTP::uri] $depth $depth]
set last_string [string trimleft [string range $last_dir [expr {[string last / $last_dir]}] end] -/]

[HTTP::uri] "$last_dir$last_string" { pool PL_eat9.raspberry.pies.com_1444 
    }   
 }
 }

Thanks

You don't have to use 2 times $depth for last_dir creation.

set last_dir [URI::path [HTTP::uri] $depth]

Can you log what your last_string returns to you ?

Hi,

I couldn't get switch -glob working but will persevere.

I did manage to parse the last 2 directories of the uri + basename + query string. Turns out they wanted the /cache/1.1.201311042258/ stripped from the URI and parse the remaining directory including basename and query string.

e.g eat9.raspberry.pies.com/cache/1.1.201311042258/js/jquery.js” is changed to “eat9.raspberry.pies.com/js/jquery.js”

So this is what seems to work for this part.

 elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/cache/") } {
set depth [URI::path [HTTP::uri] depth]
set last_dir [URI::path [HTTP::uri] 3 $depth]
set base [URI::basename [HTTP::uri]]
HTTP::uri "$last_dir$base?[HTTP::query]"
pool PL_eats9.media.pies.com_1444 
}

This is what the entire iRule looks like for now. Or at least until I can retest switch.

when HTTP_REQUEST { 
{ ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/API/v") } {
     pool PL_eats9.pies.com_99
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/APIConfig") } {
     pool PL_eats9.pies.com_99
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/myGateWay/v") } {
     pool PL_eats9.pies.com_99
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/testAPI") } {
     pool PL_eats9.pies.com_99
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/svc/") } {
     pool PL_eats9.pies.com_99  
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/pagedata/") } {
     pool PL_eats9.pies.com_1443
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/pages") } {
     pool PL_eats9.media.pies.com_1444
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/fonts") } {
     pool PL_eats9.media.pies.com_1444
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/css") } {
     pool PL_eats9.media.pies.com_1444
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/templates") } {
     pool PL_eats9.media.pies.com_1444
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/js/") } {
     pool PL_eats9.media.pies.com_1444
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/images") } {
     pool PL_eats9.media.pies.com_1444
  } elseif { ([HTTP::host] eq "eats9.raspberry.pies.com") && ([HTTP::uri] starts_with "/cache/") } {
   set depth [URI::path [HTTP::uri] depth]
 set last_dir [URI::path [HTTP::uri] 3 $depth]
   set base [URI::basename [HTTP::uri]]
    HTTP::uri "$last_dir$base?[HTTP::query]"
    pool PL_eats9.media.pies.com_1444
  } elseif { [HTTP::host] eq "eats9.raspberry.pies.com" } {
     pool PL_eats9.pies.com_1443
  }
}

Thanks,

Dave

You forgot a if statement at line 2 ;)