#!/usr/bin/env python

# By: Kelcey Damage, 2012 & Kraig Amador, 2012

# From https://cwiki.apache.org/confluence/display/CLOUDSTACK/Simple+class+for+making+API+calls,+Python

api_url = 'your_stuff_here'

apiKey = 'your_stuff_here'

secret = 'your_stuff_here'

import hashlib, hmac, string, base64, urllib

import json, urllib

class SignedAPICall(object):

def __init__(self, api_url, apiKey, secret):

self.api_url = api_url

self.apiKey = apiKey

self.secret = secret

def request(self, args):

args['apiKey'] = self.apiKey

self.params = []

self._sort_request(args)

self._create_signature()

self._build_post_request()

def _sort_request(self, args):

keys = sorted(args.keys())

for key in keys:

self.params.append(key + '=' + urllib.quote_plus(args[key]))

def _create_signature(self):

self.query = '&'.join(self.params)

digest = hmac.new(

self.secret,

msg=self.query.lower(),

digestmod=hashlib.sha1).digest()

self.signature = base64.b64encode(digest)

def _build_post_request(self):

self.query += '&signature=' + urllib.quote_plus(self.signature)

self.value = self.api_url + '?' + self.query

class CloudStack(SignedAPICall):

def __getattr__(self, name):

def handlerFunction(*args, **kwargs):

if kwargs:

return self._make_request(name, kwargs)

return self._make_request(name, args[0])

return handlerFunction

def _http_get(self, url):

response = urllib.urlopen(url)

return response.read()

def _make_request(self, command, args):

args['response'] = 'json'

args['command'] = command

self.request(args)

data = self._http_get(self.value)

# The response is of the format {commandresponse: actual-data}

key = command.lower() + "response"

return json.loads(data)[key]

#Usage

#api = CloudStack(api_url, apiKey, secret)

#request = {'listall': 'true'}

#result = api.listVirtualMachines(request)

#print "count", result['count']

#print "api url", api.value