How to ask boto internals to parse responses from AWS?

[Kirill Kazakov]

Hello everyone!

I'd like to use boto internals to parse responses from AWS API.

I have a lot of such responses in CloudTrail logs and I don't want to parse them manually. They are in JSON, though I could convert JSON to XML to feed them to boto. And is it possible to ask some internals from boto to parse those responses? So that I would get high-level objects like boto.ec2.group.Group and so on.

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Thank you,

Kirill Kazakov

Information Security Officer

Ecwid

[J Light]

I'd be interested to hear if this is possible as well?

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[Andrew Gross]

Hey,

I don't think this will be super easy, but it should be possible with some tinkering.  Boto uses the xml.sax parser to read XML.  The main entry for this is "boto/handler.py".  This is the code that walks the XML tree and for each top level tag, figures out which object to use for further parsing.  This is where "startElement" and "endElement" come in.  These are where the meat of the parsing is done, specify what when a specific tag is found.

In the boto code, the place where the handler is called is similar to:

https://github.com/boto/boto/blob/develop/boto/connection.py#L1133

So you should be able to write a bit of custom code to use this on your own input, instead of an HTTP response.

[J Light]

Hrm. Interesting. Thanks for the response. Before i look too much into it, do you happen to know if boto3 is following the same paradigm?

Also, thanks for shedding some like on the startElement and endElement pattern in the boto code. I was wondering about that for a while.

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[Andrew Gross]

No problem, hope it helps.  I am not very familiar with how boto3 works, so unsure what patterns they are using.