Single I-rule with 1000+ URI Redirect

So, my way would be to use Data groups. Not sure if this is the "best" way though. Most likely a better way than a v long irule.

So create a Datagroup with all your redirects called redir_dg (for example):

/aboutus/ContactUs/index.html := /en/about/contact
etc.....

And then refer to this datagroup in an irule:

when HTTP_REQUEST {
if { [class match [string tolower [HTTP::uri]] starts_with redir_dg] } {
    HTTP::redirect http://[HTTP::host][class match -value [string tolower [HTTP::uri]] starts_with redir_dg]
  }
}

Hope that helps. I'm sure better iRules than I will think of a better way but it might get you started.

N

For that many redirects, I'd HIGHLY recommend a data group list to map to-from information, and then a much smaller iRule.

Example iRule:

when HTTP_REQUEST {
    if { [class match [string tolower [HTTP::uri]] starts_with my_uri_dg] } {
        HTTP::redirect "http://[HTTP::host][class match -value [string tolower [HTTP::uri]] starts_with my_uri_dg]"
    }
}

Example (string-based) data group list:

/aboutus/contactus/index.html := /en/about/contact
/aboutyou/contactme/index.html := /en/about/contactme
/aboutfred/contactfred/index.html := /en/about/contactfred

Also notice that the left side is all lowercase, because you're evaluating a [string tolower ] match in the iRule. In this way you can manage a 1000 line data group list instead of a much larger and much more complicated iRule.

I would direct you to the following article for an expanded discussion on creating internal and external data groups:

https://devcentral.f5.com/articles/v11-irules-data-group-updates.UuaFkLROm00

And this one to automate the creation on an internal data group from an external file:

https://devcentral.f5.com/questions/irule-data-group

iControl is another option to build data groups. I've used this extensively for adding records into data groups by iterating through a CSV file containing /olduri/ and /new/uri key/value pairs...

function Add-DataGroupValues()
{
    param([string]$dataGroupName,[string[]]$dataGroupMember,[string]$dataGroupValue)
    $stringClass = New-Object -TypeName iControl.LocalLBClassStringClass
    $stringClass.name = $dataGroupName
    $stringClass.members = ((,$dataGroupMember))
    (Get-F5.iControl).LocalLBClass.add_string_class_member((,$stringClass))

    $stringValueClass = New-Object -TypeName iControl.LocalLBClassStringClass
    $stringValueClass.name = $dataGroupName
    $stringValueClass.members = ((,$dataGroupMember))
    $values = (Get-F5.iControl).LocalLBClass.set_string_class_member_data_value($stringValueClass,$dataGroupValue)
    }

 Get the CSV info
$records = Get-CSVInfo

 Add to data group
foreach($record in $records)
{
    $dataGroupMember = $record.Name
    $dataGroupValue = $record.Value
    Add-DataGroupValues $dataGroupName $dataGroupMember $dataGroupValue
}
(Get-F5.iControl).SystemConfigSync.save_configuration("bigip.conf","SAVE_FULL")

We implemented and it doesn't redirect correctly. Below is I-rule and a sample of Data Group. Would this type of redirect have issue on 10.2.4 Build 655.0 Hotfix HF4? I see I-rule being executed on statistices. Is there any other ways to troubleshoot this?

I-rule

when HTTP_REQUEST {

if { [class match [string tolower [HTTP::uri]] starts_with redir_dg] } {

HTTP::redirect http://[HTTP::host][class match -value [string tolower [HTTP::uri]] 
starts_with redir_dg]

} }

Data Group - redir_dg

/aboutus/ContactUs/index.html := /en/about/contact

/aboutus/news/index.html := /en/about/news

/aboutus/ := /en/about-us

/aboutus/place/index.html := /en/about-us

When you say "it doesn't redirect correctly", what do you mean exactly? Does it not redirect at all, or are there unintended actions taken? Any errors in the logs?

I found my issue. Some worked and others did not. The ones that didn't work I had uppercase letters in my Data Group. I tried to copy and past a list i recieved from the web team to save time but it ended up bitting me. Thank you for the quick repsonce! it ended up being a case of upper case Datagroup when I-rule specifically changes to lower case!