Routing requests based on the content of XML fields

This useful bit of TrafficScript can be used in a Request rule for routing requests based on the contents of the "Source" field.

This is the solution to a request from a ZXTM 3.1 evaluator.

# Only do this for HTTP POSTs...
if( http.getMethod() != "POST" ) break;

$body = http.getRequestBody();
$source = xml.xpath.matchNodeSet( $body, "", "//Source/text()" );

# This sets $source to be
# "/dvrti1RTIDocRoot/portal2/60097.48806.65101.44299/8.pdf"

if( string.contains( $source, "/portal2/" ) ) {
   pool.use( "portal2 pool" );
} else if( string.contains( $source, "/qa3x/" ) ) {
   pool.use( "qa3x pool" );
}

Stephen Davis [Zeus] 01 July 2005

1 comment

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Comment from: Owen Garrett [Zeus Dev Team]

And for reference, here's an example of the SOAP request that they wanted to manage traffic for:

POST / HTTP/1.1
Host: portal.customer.com
Content-Type: text/xml; charset=UTF-8
SOAPAction: "urn:PartnerAPICallbackOnSynchronizeNotesAction"
Content-length: 1296
 
<E:Envelope xmlns:E="http://schemas.xmlsoap.org/soap/envelope/" 
      xmlns:A="http://schemas.xmlsoap.org/soap/encoding/" 
      xmlns:s="http://www.w3.org/2001/XMLSchema-instance" 
      xmlns:y="http://www.w3.org/2001/XMLSchema" 
      E:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
  <E:Body>
     <m:OnSynchronizeNotes xmlns:m="urn:PartnerAPI">
        <HostSessionID s:type="y:string">123</HostSessionID>
        <Source s:type="y:string">/dvrti1RTIDocRoot/portal2/60097.48806.65101.44299/8.pdf</Source>
        <Notes s:type="m:OperatedNotesList" A:arrayType="m:OperatedNote[1]">
           <item>
              <Ver s:type="y:int">1</Ver>
              <Operation s:type="m:OperationCode">added</Operation>
              <Id s:type="y:int">1</Id>
              <Page s:type="y:int">1</Page>
              <Type s:type="m:NoteType">Text</Type>
              <Time s:type="y:dateTime">2005-04-06T21:49:03Z</Time>
              <CTime s:type="y:dateTime">2005-04-06T21:49:03Z</CTime>
              <Author s:type="m:NoteAuthor">
                 <F s:type="y:string">John</F>
                 <L s:type="y:string">Reviewer1</L>
                 <Aid s:type="y:string">User01</Aid>
              </Author>
              <Anchor s:type="m:WPoint">
                 <Xcoord s:type="y:float">2378.3252</Xcoord>
                 <Ycoord s:type="y:float">2948.76855</Ycoord>
              </Anchor>
              <PageSize s:type="m:WSize">
                 <Xsize s:type="y:float">20400</Xsize>
                 <Ysize s:type="y:float">13200</Ysize>
              </PageSize>
              <Text s:type="y:string">test callback</Text>
           </item>
        </Notes>
     </m:OnSynchronizeNotes>
  </E:Body>
</E:Envelope>

They wanted to route traffic to one of two pools based on the value of the Source node in the XML document.

01 July 2005 @ 12:00

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Routing requests based on the content of XML fields

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