[Ruby-aws-develop] Turk notifications

[Steve Quezadas]

Thanks. Once I brush up on my ruby skills, I'll try to donate some code 
to add a helper function. I'm still a ruby newbie (probably by your 
standards).

- Steve


David J Parrott wrote:
> Hi Steve,
>
> RubyAWS doesn't currently have a helper function for simplifying event 
> notifications.  What you're getting back is a hash, which should be 
> perfectly usable.  The only complicated part is the 
> "Event.1.Attribute" vs "Event.2.Attribute" part.  That's the standard 
> way of encoding a nested hash as a single-level hash.
>
> {XXX.1.YYY => ZZZ}  maps to  { XXX => [ {YYY => ZZZ} ] }
>
> In my own Rails code that processes events, i typically do something 
> like this:
>
> i=1
> while !params["Event.#{i}.EventType"].nil?
>     event_type = params["Event.#{i}.EventType"]
>     hit_id = params["Event.#{i}.HITId"]
>     case event_type
>     when "HITReviewable"
>         # do stuff
>     when "AssignmentSubmitted"
>         assignment_id = params["Event.#{i}.AssignmentId"]
>         # do stuff
>     end
> end
>
> i'm sure it wouldn't be to hard to write some code that converted the 
> single-level hash into a multi-level hash as well, but i don't have 
> the time right this moment, and i'm not sure it would really help that 
> much.
>
> Good luck, and if you still need help, let the list know.
>
> -David
>
>
> On Dec 1, 2008, at 10:45 PM, Steve Quezadas wrote:
>
>> I set up mechanical turk for notifications when a HIT gets completed. 
>> When it happens, the amazon server contacts my webserver with a GET 
>> request.
>>
>> This is probably a basic question, but what aws method do I use to 
>> process the incoming GET request? It looks like this (I unencoded it 
>> for your reading convenience):
>> Event.1.HITId => 12345678901234567890
>> Event.1.HITTypeId => 09876543210987654321
>> Event.1.AssignmentId => 1234567890123456789012345678901234567890
>> Event.1.EventType => AssignmentSubmitted
>> Event.1.EventTime => 2008-11-30T01:33:03Z
>> Event.2.HITId => 12345678901234567890
>> Event.2.HITTypeId => 09876543210987654321
>> Event.2.AssignmentId => 1234567890123456789012345678900987654321
>> Event.2.EventType => AssignmentSubmitted
>> Event.2.EventTime => 2008-11-30T01:33:03Z
>> Version => 2006-05-05
>> Signature => xxxxxxxxxxxxxxx
>> Timestamp => 2008-11-30T01:33:07Z
>> action => receive_message
>> method => Notify
>> controller => ask
>>
>> SimplifyAnswer doesn't seem to work. Anyone know the answer?
>>
>> - Steve
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>
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