Parse the first and second character in the path?

Hi Mike,

 

 

You can check two characters using two character classes like this: [aA][bB]. This would match ab, Ab, aB and BB. AA2AL would be simple if you set the path to lower case ([string tolower [HTTP::path]]) and then used /a[a-l]*. However, I can't think of a simple way to handle two character ranges like am - bl.

 

 

Anyone have ideas on this?

 

 

Aaron

Aaron,

 

 

Thanks a bunch for the idea here. It really got my wheels spinning. Got it to work with lowercase only at first. So basically repeated it with uppercase a the first letter to parse. Also the issue with it character ranging within the string was a huge road block. Was addressed by creating another query by going to the next character and still pointing it to the correct pool. A little more work but gets the job done. Aaron thanks again.

 

 

example will explain what I am talking about above.

 

 

when HTTP_REQUEST {

 

Parse the first then second character in the path

 

switch -glob [HTTP::path] {

 

"/a[a-lA-L]*" {

 

pool reward-uat5.123.com_AA2AL

 

}

 

"/A[a-lA-L]*" {

 

pool reward-uat5.123.com_AA2AL

 

}

 

"/a[m-zM-Z]*" {

 

pool reward-uat5.123.com_AM2BL

 

}

 

"/A[m-zM-Z]*" {

 

pool reward-uat5.123.com_AM2BL

 

}

 

"/b[a-lA-L]*" {

 

pool reward-uat5.123.com_AM2BL

 

}

 

"/B[a-lA-L]*" {

 

pool reward-uat5.123.com_AM2BL

 

}

 

"/b[m-zM-Z]*" {

 

pool reward-uat5.123.com_BM2CD

 

}

 

"/B[m-zM-Z]*" {

 

pool reward-uat5.123.com_BM2CD

 

}

 

"/c[a-dA-D]*" {

 

pool reward-uat5.123.com_BM2CD

 

}

 

"/C[a-dA-D]*" {

 

pool reward-uat5.123.com_BM2CD

 

}

 

default {

 

Requested URI was a leading forward slash only

 

pool reward-uat5.123.com_AA2AL

 

}

 

}

 

}

 

That's a novel solution! You can logically set the path to lower case without modifying the actual path that in the request sent to the pool. This allows you to remove some switch cases. You can also combine multiple cases where the action is the same:

 
 when HTTP_REQUEST { 
     Parse the first then second character in the path 
    switch -glob [string tolower [HTTP::path]] { 
       "/a[a-l]*" { 
          pool reward-uat5.123.com_AA2AL 
       } 
       "/a[m-z]*" - 
       "/b[a-l]*" { 
          pool reward-uat5.123.com_AM2BL 
       } 
       "/b[m-z]*" - 
       "/c[a-d]*" { 
          pool reward-uat5.123.com_BM2CD 
       } 
       default { 
           Requested URI was a leading forward slash only 
          pool reward-uat5.123.com_AA2AL 
       } 
    } 
 }  
 

Aaron