GetAtt, parsing string from object

[Bardia Afshin]

I'd like to be able to retrieve the string from GetAtt object, looking at the class definition, it's not apparent, I'd like to perform the following operation

first_instace_DNSName = GetAttr(first_instance, "DNSName")

print first_instance_DNSName

exit()

the code above returns a troposphere object, I'd like to parse the actual value of the DNSName from that object. 

Thoughts?

class GetAtt(AWSHelperFn):
    def __init__(self, logicalName, attrName):
        self.data = {'Fn::GetAtt': [self.getdata(logicalName), attrName]}

    def JSONrepr(self):
        return self.data

[Michael Barrett]

What do you mean by parse?  Like you'd like to have the python code get the DNS name and do something with it?  That's not possible with GetAtt - remember that GetAtt is part of troposphere, which means that it's part of the CloudFormation language.  It simply translates into the CloudFormation Fn::GetAtt, which is only available once the template is built into a stack.

If you want to, after the stack is built, get the DNSName - then take the output of GetAtt(object, "DNSName") and put it in an Output.  Then you can query it with boto, or use it as a parameter in other stacks.

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/outputs-section-structure.html

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