DNAC = "sandboxdnac.cisco.com"
DNAC_USER = "devnetuser"
DNAC_PASSWORD = "Cisco123!"
DNAC_PORT = 443

import requests;
from requests.auth import HTTPBasicAuth;

def get_auth_token(controller_ip=DNAC, username=DNAC_USER, password=DNAC_PASSWORD):
    """ Authenticates with controller and returns a token to be used in subsequent API invocations
    """

    login_url = "https://{0}:{1}/api/system/v1/auth/token".format(controller_ip, DNAC_PORT)
    result = requests.post(url=login_url, auth=HTTPBasicAuth(DNAC_USER, DNAC_PASSWORD), verify=False)
    result.raise_for_status()

    token = result.json()["Token"]
    return {
        "controller_ip": controller_ip,
        "token": token
    }
def create_url(path, controller_ip=DNAC):
    """ Helper function to create a DNAC API endpoint URL
    """

    return "https://%s:%s/api/v1/%s" % (controller_ip, DNAC_PORT, path)
def get_url(url):

    url = create_url(path=url)
    print(url)
    token = get_auth_token()
    headers = {'X-auth-token' : token['token']}
    try:
        response = requests.get(url, headers=headers, verify=False)
    except requests.exceptions.RequestException as cerror:
        print("Error processing request", cerror)
        sys.exit(1)

    return response.json()
def list_network_devices():
    return get_url("network-device")
if __name__ == "__main__":
    response = list_network_devices()
    print("{0:42}{1:17}{2:12}{3:18}{4:12}{5:16}{6:15}".
        format("hostname","mgmt IP","serial",
        "platformId","SW Version","role","Uptime"))

    for device in response['response']:
        uptime = "N/A" if device['upTime'] is None else device['upTime']
        print("{0:42}{1:17}{2:12}{3:18}{4:12}{5:16}{6:15}".
            format(device['hostname'],
                    device['managementIpAddress'],
                    device['serialNumber'],
                    device['platformId'],
                    device['softwareVersion'],
                    device['role'],uptime))