[atlas] Sagan: 'Response' object has no attribute 'edns0'

19 Feb 2015

      Hi all, I'm trying to do some basic DNS UDM result parsing using Sagan.

I'd like to have an easy way to extract the NSID. I followed the
instruction found here:

https://www.ripe.net/ripe/mail/archives/ripe-atlas/2014-May/001475.html

'from ripe.atlas.sagan import Result
 result = Result("your-JSON-result-blob-here")
 print(result.responses[0].edns0.options[0].nsid)'

That didn't work, as I get:

AttributeError: 'Result' object has no attribute 'responses'

So I figured I need to use a DnsResult, instead. I then have the
following Python code:

 from ripe.atlas.sagan import DnsResult
 import json

 url = "https://atlas.ripe.net/api/v1/measurement-latest/1873691/"
 results = json.load(urllib.urlopen(url))

 for probe in results:
  sagan_result = DnsResult(results[probe][0])
  print(sagan_result.responses[0].edns0.options[0].nsid)

This gives me:

    print(sagan_result.responses[0].edns0.options[0].nsid)
AttributeError: 'Response' object has no attribute 'edns0'

After some digging through the Sagan documentation, I found out that the
way to do this should be:

 print(sagan_result.responses[0].abuf.edns0.options[0].nsid)

This might be of help to others.

	~paul

[atlas] Sagan: 'Response' object has no attribute 'edns0'

Paul Vlaar