openstack rest url创建虚拟机

#!/usr/bin/python
#coding:utf-8

import json
import urllib2
def byteify(input):
    if isinstance(input, dict):
        return {byteify(key): byteify(value) for key, value in input.iteritems()}
    elif isinstance(input, list):
        return [byteify(element) for element in input]
    elif isinstance(input, unicode):
        return input.encode('utf-8')
    else:
        return input

def token_post():
    auth = {"auth":{"identity":{"methods":["password"],"password":{"user":{"domain":{"id":"default"},"name":"admin","password":"admin"}}},"scope":{"project":{"domain":{"id":"default"},"name":"admin"}}}}
    content = json.dumps(auth)
    headers = {"Content-type":"application/json","Accept": "application/json;charset=UTF-8"}
    auth_url = ''
    token_url = auth_url+"auth/tokens"
    req = urllib2.Request(token_url, content, headers)
    response = urllib2.urlopen(req)
    token = response.info().getheader("X-Subject-Token")
    response.encoding='utf-8'
    response_json = json.loads(response.read())
    response_json = byteify(response_json)
    response_json['authtoken'] = token
    return response_json

def service_list(response):
    auth_url = ''
    service_url = auth_url+"services"
    req = urllib2.Request(service_url)
    tokenid = response['authtoken']
    req.add_header('X-Auth-Token', tokenid)
    response = urllib2.urlopen(req)
    response_json = json.loads(response.read())
    return response_json

def get_nova_endpoint(response):
    services = response['token']['catalog']
    for i in range(0, len(services)):
        if services[i]['name'] == 'nova':
            nova_endpoint = services[i]['endpoints'][0]['url']
    return nova_endpoint

def image_list(response):
    novaurl = get_nova_endpoint(response)
    #print "novaurl:",novaurl
    servers_url = novaurl+'/'+'images'
    req = urllib2.Request(servers_url)
    tokenid = response['authtoken']
    req.add_header('X-Auth-Token', tokenid)
    response = urllib2.urlopen(req)
    response_json = json.loads(response.read())
    return response_json

def flavors_list(response):
    novaurl = get_nova_endpoint(response)
    servers_url = novaurl+'/'+'flavors'
    req = urllib2.Request(servers_url)
    tokenid = response['authtoken']
    req.add_header('X-Auth-Token', tokenid)
    response = urllib2.urlopen(req)
    response_json = json.loads(response.read())
    return response_json


def instances_list(response):
    novaurl = get_nova_endpoint(response)
    servers_url = novaurl+'/'+'servers'
    req = urllib2.Request(servers_url)
    tokenid = response['authtoken']
    req.add_header('X-Auth-Token', tokenid)
    response = urllib2.urlopen(req)
    response_json = json.loads(response.read())
    return response_json


def get_images_id(response):
    images = response['images']
    for i in images:
        if i['name'] == "cirros-0.3.4-x86_64-uec":
            images_id = i['id']
    return images_id

def get_flavors_id(response):
    flavors = response['flavors']
    #print flavors
    for i in flavors:
        if i['name'] == "m1.tiny":
            images_id = i['id']
    return images_id

def instances_create(response):
    novaurl = get_nova_endpoint(response)
    name = "url_api"
    images_id = get_images_id(image_list(response))
    flavors_id = get_flavors_id(flavors_list(response))
    server = json.dumps({"server":{"name":name, "imageRef": images_id, "flavorRef":flavors_id}})
    print server
    headers = {"Content-type":"application/json","Accept": "application/json;charset=UTF-8"}
    servers_url = novaurl+'/'+'servers'
    req = urllib2.Request(servers_url, server, headers)
    tokenid = response['authtoken']
    req.add_header('X-Auth-Token', tokenid)
    response = urllib2.urlopen(req)
    response_json = json.loads(response.read())
    return response_json




if __name__ == '__main__':
    response = token_post()
    #print service_list(response)
    #print image_list(response)
    #print flavors_list(response)
    #print instances_list(response)
    print instances_create(response)