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Vladimir_Akhmarov's avatar
Vladimir_Akhmarov
Icon for Cirrus rankCirrus
Dec 08, 2022
Solved

No matches under XML_CONTENT_BASED_ROUTING

Hello!   I have a requirement to match and log selected XML content under APM enabled VS I tried to follow https://techdocs.f5.com/en-us/bigip-15-0-0/big-ip-local-traffic-manager-implementations/r...
application delivery
BIG-IP Access Policy Manager (APM)
ews
xml
xpath
  • Kai_Wilke's avatar
    Kai_Wilke
    Dec 08, 2022

    Hi akhmarov,

    just wanted to get sure... 😉

    Try to format your xpath-query case-sensitive... 😉

     

    //m:GetFolder/*

     

    Cheers, Kai

Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Dec 08, 2022

You're welcome!

Cheers, Kai

  • Vladimir_Akhmarov's avatar
    Vladimir_Akhmarov
    Icon for Cirrus rankCirrus
    Dec 08, 2022

    Kai, may I ask you how to construct XPath query to find each node starting with "m:"?

     

    <m:GetFolder xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
    <m:FolderShape>
        ...
    </m:FolderShape>
    <m:FolderIds>
        ...
    </m:FolderIds>
</m:GetFolder>

    I need to extract "GetFolder", "FolderShape" and "FolderIds" with their properties

    • Vladimir_Akhmarov's avatar
      Vladimir_Akhmarov
      Icon for Cirrus rankCirrus
      Dec 08, 2022

      Seems that the answer to my question should be "NO" because paragraph Writing XPath queries from https://techdocs.f5.com/en-us/bigip-15-0-0/big-ip-local-traffic-manager-implementations/routing-based-on-xml-content.html#GUID-CB96E40C-6AA4-4B0F-A8A4-3A131BC10BB1 states 4. Write queries to match elements and attributes

      To catch something like GetFolder from my original XML example I tied to use:

      local-name(//soap:Body/m:*)
name(//soap:Body/m:*)
//soap:Body/m:*

      But the last XPath query was the only match found in logs

      So I must consider that XML_CONTENT_BASED_ROUTING event cannot be used for XML node names extraction

      Any help appreciated 🙂

    • Kai_Wilke's avatar
      Kai_Wilke
      Icon for MVP rankMVP
      Dec 08, 2022

      Hi ahkmarov,

      i used XPath expression tools in the past to write my queries. It helps a lot...

      Free Online XPath Tester / Evaluator - FreeFormatter.com

      You may change your queries to... (use both)

       

       

      //m:GetFolder/m:FolderIds/*
//m:GetFolder/m:FolderShape/*

       

       

      The XML and iRule you've provided would output this...

       

       

      <XML_CONTENT_BASED_ROUTING>: //m:GetFolder/m:FolderShape/* = IdOnly
<XML_CONTENT_BASED_ROUTING>: //m:GetFolder/m:FolderIds/* =

       

       

      Cheers, Kai

      • Vladimir_Akhmarov's avatar
        Vladimir_Akhmarov
        Icon for Cirrus rankCirrus
        Dec 08, 2022

        Thanks!

         

        I used http://xpather.com/ for tests

         

        My issue is that I do not know exact XML node names, like GetFolder or FolderShape. I would like to iterate SOAP body and receive node names to analyze them