How to Parse JSONS in PROC HTTP Outputs

[jakemyers2]

Hello, 

I have been scouring now for a couple hours the posts and have yet to find anything that works. I am currently pushing to an API parameters which then gives me a JSON presigned URL and will then use that URL to upload a file. I am struggling because I am not the best at SAS and am struggling to know where my issues lie. I am able to get to the proc http post, and think the JSON file containing the presigned url from aws is in the resp variable because I am able to see it in the log. The format of the JSON file is as follows

{"presigned_url": "https:blahblah", "uuid": "blah", "file": "blah", "var4":"blah"}

I think that is my current issue as I cant go from this JSON into putting just the url into my next PROC HTTP request.

For reference in python I do all of that in one line 

signed_url = json.loads(response.content)['presigned_url']

filename in temp;
data _null_;  
	file in;
	put "value=key&"
		"value2=key2&"
		"value3=key3&"
run;

filename resp temp;

proc http
	method="POST"
	url="api.com"
	ct="application/x-www-form-urlencoded"
	in= in
	out= resp
	proxyhost="x"
	proxyport=1;
run;

libname lib JSON fileref=resp;

filename rest temp;
filename input "fileToUpload.data";

proc http 
   method="PUT" 
   url=lib.contents.presigned_url 
   in= input
   out=rest
run;

[Patrick]

If you're more comfortable with Python then this blog should interest you: SAS or Python? Why not use both?

[jakemyers2]

I am more comfortable in python but due to the nature of the project it has to be done in SAS.