How can I extract SOAP envelope from raw data using rex

[msmit205]

I would like to use a rex so I can pull the SOAP Envelope out of raw text and then send it to xmlprettyprint. Can anyone help me with the rex statement that would extract just the soap envelope from the example raw text below?

{"severity":"DEBUG","logger":"org.mule.module.http.internal.HttpMessageLogger","thread":"[dmvproxy-1.0.2-RELEASE].HTTP_Listener_Configuration.worker.790","message":"LISTENER\nPOST \/inolrsproxy HTTP\/1.1\r\nContent-Type: text\/xml; charset=UTF-8\r\nAccept: *\/*\r\nUser-Agent: Apache CXF 3.1.4\r\nX-Takipi-SN: 18480\r\nCache-Control: no-cache\r\nPragma: no-cache\r\nHost: dmv-proxy.dmv-proxy.rancher.internal:8081\r\nConnection: keep-alive\r\nContent-Length: 3413\r\n\r\n<soap:Envelope xmlns:soap=\"http:\/\/schemas.xmlsoap.org\/soap\/envelope\/\"><soap:Body><test>testvalue<\/test><\/soap:Body><\/soap:Envelope>"}

[elliotproebstel · Accepted solution]

Sure. I'd use this:
... | rex field=_raw "(?<soap_envelope><soap:Envelope.*\/soap:Envelope>)"

If you also want it to remove all the extra escape characters, you could add this to the end:
| rex mode=sed field=soap_envelope "s/\\\//g"

Here's where I tested the first part of the regex:
https://regex101.com/r/3SO9zD/1

[msmit205]

Thanks for the quick reply. When I run this search in the browser, I still get the standard result with TIME and EVENT columns, and the EVENT looks the same as it did before. How can I get the browser to display just the Soap that has been extracted by rex?

[elliotproebstel]

If you only want to display the value of the soap_envelope fields, you can append this to your search:
| stats values(soap_envelope) AS soap_envelope