Question

I am new to both GAE and PiCould, and have some basic questions when I would like to call a published function from GAE. It seems like my approach of calling a published function is not recognized. So can you give me some suggestions?

Thanks for your help!

UPDATE: I am not sure why people think this question is not valuable. My standing point is that since GAE only accept pure-Python file, it is necessary to find a way for models written in other langurages (i.e., Fortran77). Thus, some non-Python programs can be uploaded to other cloud servers such like PiCloud and then called by GAE. With people’s help (thank you!) I have figured out this issue. I have attached my codes below for other’s reference:

import os
os.environ['DJANGO_SETTINGS_MODULE']='settings'
from google.appengine.ext.webapp.util import run_wsgi_app
import webapp2 as webapp
import json
import base64
#import urllib2
import urllib

from google.appengine.api import urlfetch

api_key='1111'
api_secretkey='adsad'

####define and publish a function######
def square(x):
    """Returns square of a number"""
    print 'Squaring %d' % x
    return x*x

cloud.setkey(api_key, api_secretkey)
cloud.rest.publish(square, "square_func")

url = 'https://' + 'api.picloud.com/r/3303/square_func' 
input_val=22

#######call the function################# 
base64string = base64.encodestring('%s:%s' % (api_key, api_secretkey))[:-1]
http_headers = {'Authorization' : 'Basic %s' % base64string}
data = urllib.urlencode({"x":input_val})
response = urlfetch.fetch(url=url, payload=data, method=urlfetch.POST, headers=http_headers)

jid= json.loads(response.content)['jid']
output_st = 'queued'
#
while output_st=="queued":
    response_st = urlfetch.fetch(url='https://api.picloud.com/job/?jids=%s&field=status' %jid, headers=http_headers)
    output_st = str(json.loads(response_st.content)['info']['%s' %jid]['status'])

url_val = 'https://api.picloud.com/job/result/?jid='+str(jid)
response_val = urlfetch.fetch(url=url_val, method=urlfetch.GET, headers=http_headers)
output_val = json.loads(response_val.content)['result']


class Page(webapp.RequestHandler):
    def get(self):
        html = """<table width="600" border="1">
                          <tr>
                            <th width="480" scope="col">Outputs</div></th>
                            <th width="120" scope="col">Value</div></th>                            
                          </tr>
                          <tr>
                            <td>Input</td>
                            <td>%s</td></tr>                          
                          <tr>
                            <td>picloud jid</td>
                            <td>%s</td></tr>
                          <tr>
                            <td>picloud status</td>
                            <td>%s</td></tr>
                          <tr>
                            <td>picloud results</td>
                            <td>%s</td></tr>                             
                         </table>"""%(input_val, jid, output_st, output_val)

        self.response.out.write(html)

app = webapp.WSGIApplication([('/.*', Page)], debug=True)

def main():
    run_wsgi_app(app)

if __name__ == '__main__':
    main()

Answer 1

The line should be:

output_val = json.loads(response.content)