Forum Discussion

islam_nadim's avatar
islam_nadim
Icon for Cirrus rankCirrus
Jun 12, 2020

Multiple iRules on Same VS not working

Hello guys,

I have 2 iRules similar to each other, with the only difference is the URI.

Only the first iRule gets triggered, either apply the iRule or skip, based on the URI

Tried to merge them into a single iRule, but a static variable caused an issue.

I have a variable in the 

WHEN RULE_INIT 
{
  set static::myVariable "some string"
}

This static variable is set depending on the URI. So, I thought of merging both iRules into a single one, but this is not working due to this Variable.

So, now:

1) How can I get both iRules to be triggered?

2) How can I merge both, and set the static variable based on the URI?

application delivery
iRules
LTM
  • youssef1's avatar
    youssef1
    Jun 15, 2020

    Hello,

    Yes you can easly.

    The simple way to achieve your need is to merge your irule.

    when RULE_INIT - Will allow you to set an var

     when CLIENT_ACCEPTED - L4, yo can't manage restriction based on URI

    when HTTP_REQUEST - you can manage URI/URL (L7)

    when HTTP_RESPONSE - http response L7

    Example:

    when RULE_INIT {
	set static::myVariable "some string"
}
 
when CLIENT_ACCEPTED {
...
}
 
when HTTP_REQUEST {
witch -glob [string tolower [HTTP::path]] {
	"/uri1" {
		# Apply your need 1
	}
	"uri2" {
		# Apply your need 2
	}
	default {
		# Apply your default need
	}
}
 
when HTTP_RESPONSE {
...
}

    you just have to manage all your uses cases well and sequence the actions...

    if you send me your irules privately i can do it for you.

    regards

  • youssef1's avatar
    youssef1
    Icon for Cumulonimbus rankCumulonimbus
    Jun 12, 2020

    Hi Guy,

     

    can you published your Irule, it wil be more easier to help you with code.

    Or can you describe your both irule because if you have an HTTP::response or redirert... it will be normal that the second irule will not be executed. In all case published your Irule and I will help you.

     

    Thank you

    • islam_nadim's avatar
      islam_nadim
      Icon for Cirrus rankCirrus
      Jun 12, 2020

      Hello Youssef,

      Unfortunately, I can't share my iRule. But both iRules have:

      when RULE_INIT {
 
when CLIENT_ACCEPTED {
 
when HTTP_REQUEST {
 
when HTTP_RESPONSE {

      I need to apply the iRules based on the URI. IS this something possible?

      Both iRules do exactly the same, with just a different string for a static variable in the "when RULE_INIT" section which I need to set the string for it based on the URI to be able to use a single iRule instead

      • youssef1's avatar
        youssef1
        Icon for Cumulonimbus rankCumulonimbus
        Jun 15, 2020

        Hello,

        Yes you can easly.

        The simple way to achieve your need is to merge your irule.

        when RULE_INIT - Will allow you to set an var

         when CLIENT_ACCEPTED - L4, yo can't manage restriction based on URI

        when HTTP_REQUEST - you can manage URI/URL (L7)

        when HTTP_RESPONSE - http response L7

        Example:

        when RULE_INIT {
	set static::myVariable "some string"
}
 
when CLIENT_ACCEPTED {
...
}
 
when HTTP_REQUEST {
witch -glob [string tolower [HTTP::path]] {
	"/uri1" {
		# Apply your need 1
	}
	"uri2" {
		# Apply your need 2
	}
	default {
		# Apply your default need
	}
}
 
when HTTP_RESPONSE {
...
}

        you just have to manage all your uses cases well and sequence the actions...

        if you send me your irules privately i can do it for you.

        regards