类：
class NovaApi():
def __init__(self):
self.ip = controller_ip
self.port = nova_port
self.http_protocol = http_protocol
self.endpoint = '{}://{}:{}'.format(self.http_protocol, self.ip, self.port)
self.token = Keystone.token
self.admin_token = Keystone.admin_token
self.DIR_PATH = os.path.dirname(__file__)
self.log = Logger('../Log/Nova.log', level='info').logger
def listVms(self):
url = '{}/v2.1/servers'.format(self.endpoint)
base_header["X-Auth-Token"] = self.token
r = requests.get(url=url, headers=base_header, verify=False)
if r.status_code == 200:
res = json.loads(r.content)
server_list = res.get('servers')
return server_list
else:
self.log.error('list vms request failed! {}-{}'.format(r.status_code, r.content))
return False
@nova_new_header
def addOneVmUseLocalDiskNet(self, name, imageRef, flavorRef, network_id,
availability_zone="nova", diskConfig="AUTO", description=None,
security_groups: list = [{"name": "default"}]):
url = '{}/v2.1/servers'.format(self.endpoint)
body = {
"server": {
"name": name,
"imageRef": imageRef,
"flavorRef": flavorRef,
"availability_zone": availability_zone,
"OS-DCF:diskConfig": diskConfig,
"description": description,
"security_groups": security_groups,
"networks": [
{
"uuid": network_id,
}
]
}
}
body = json.dumps(body)
r = requests.post(url=url, data=body, headers=base_header, verify=False)
if r.status_code == 202:
res = json.loads(r.content)
self.log.info('vm:{} create success!'.format(name))
vm_info = res.get('server')
return vm_info
else:
self.log.error('create vm failed!-{}-{}'.format(r.content,r.status_code))
return False
这个类中方法都需要在请求的时候传递header，但是他们的header会有所区别，所以需要使用不同的装饰器进行解决，如上：@nova_new_header，会将self.token传递给装饰器中的base_header
装饰器：
def nova_new_header(func_or_cls):
def wapper(self,*args, **kwargs):
base_header["X-Auth-Token"] = self.token
base_header["X-OpenStack-Nova-API-Version"] = '2.65'
res = func_or_cls(self,*args, **kwargs)
return res
return wapper
这样就可以在装饰器中将__init__中的self.token传递给func_or_cls，并且同时定义了API的微版本号。
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