ntnx-host-stats.py

import sys
import json
import requests
import datetime

args = sys.argv
conf_file = args[1]
metrics_file_name = args[2]

with open(conf_file, "r") as file:
    conf = file.read()
    conf = json.loads(conf)

prism_addr = conf["prism_address"]
prism_user = conf["user_name"]
prism_pass = conf["password"]

def get_metrics_str(metrics_file_name):
  with open(metrics_file_name, "r") as file:
    metrics = file.read()
    metrics = metrics.split()
    metrics_str = "%2C".join(metrics)
    return metrics_str

def main():
  base_url = 'https://' + prism_addr + ':9440/PrismGateway/services/rest/v2.0'
  requests.packages.urllib3.disable_warnings()
  s = requests.Session()
  s.auth = (prism_user, prism_pass)
  s.headers.update({'Content-Type': 'application/json; charset=utf-8'})

  metrics_str = get_metrics_str(metrics_file_name)

  api_url = base_url + '/hosts'
  hosts = s.get(api_url, verify=False).json()
  for host in hosts['entities']:
    host_name = host['name']
    host_uuid = host['uuid']
    api_url = base_url + '/hosts/' + host_uuid + '/stats/?metrics=' + metrics_str
    stats = s.get(api_url, verify=False).json()
    for stat in stats['stats_specific_responses']:
      stat_metric = stat['metric']
      stat_timestamp = datetime.datetime.fromtimestamp(int(stat['start_time_in_usecs']) / 1000000)
      stat_value = stat['values'][0]
      print '{0},\t{1},\t{2},\t{3}'.format(host_name, stat_timestamp, stat_metric, stat_value)

if __name__ == '__main__':
  main()