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Date: Fri, 14 Sep 2012 06:56:30 -0400
Subject: Re: Batching HTTP requests with httplib (Python 2.7)
From: Dwight Hutto <dwightdhutto@gmail.com>
To: Chicken McNuggets <chicken@mcnuggets.com>
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>> | The problem with most web services is that they require a list of
>> | sequential commands to be executed in a certain order to complete a
>> | given task (or at least the one I am using does) so having to manually
>> | call each command is a bit of a pain. How would you go about the design
>> | of a library to interact with these services?
>> |
>> | Any help is greatly appreciated :).
>>
>> Maybe I'm missing something. What's hard about:
>>
>>    - wrapping the web services calls in a simple wrapper which
>>      composes the call, runs it, and returns the result parts
>>      This lets you hide all the waffle about the base URL,
>>      credentials etc in the wrapper and only supply the essentials
>>      at call time.
>>
>>    - writing your workflow thing then as a simple function:
>>
>>        def doit(...):
>>          web_service_call1(...)
>>          web_service_call2(...)
>>          web_service_call3(...)
>>
>>      with whatever internal control is required?
>>
>> This has worked for me for simple things.
>>
>> What am I missing about the larger context?
>>
>
> That is what I have at the moment but it is ugly as hell. I was wondering if
> there was a somewhat more elegant solution that I was missing.
> --

Well if the code works it works. There probably is a better way than
what I came up with:


def web_service_call0(y):
	print "Service call = %i)" % y

def web_service_call1(y):
	print "Service call = %i)" % y

def web_service_call2(y):
	print "Service call = %i)" % y

def web_service_call3(y):
	print "Service call = %i)" % y

def web_service_call4(y):
	print "Service call = %i)" % y

service_num_list = [num for num in range(0,5)]
for service_num in service_num_list:
	eval("web_service_call%i(%i)" % (service_num,service_num))



I just define the service calls, and iterate through them with an eval
that places in the service call num, but you would have to have a
matching list of the params that would go with each one.

I'm almost positive there will be some more well written ones on the way.

-- 
Best Regards,
David Hutto
CEO: http://www.hitwebdevelopment.com