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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
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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

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

        So you need to check for yet unknown included node names other than GetFoler and FolderShape?

        Cheers, Kai