monitor/custom_dashboard.py

   1 ##############################################################################
   2 # Copyright (c) 2018 Huawei Tech and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9
  10 import json
  11
  12
  13 def customize_query(filename, rowtitle, panelname, expr):
  14     with open(filename, 'r+') as f:
  15         data = json.load(f)
  16         x = data['rows']  # this is an array of the rows of the dashboard
  17         for y in x:
  18             if y['title'] == rowtitle:
  19                 pan = y['panels']
  20                 for i in range(len(pan) - 1):
  21                     z = pan[i]
  22                     if z['title'] == panelname:
  23                         tar = z['targets']
  24                         for a in tar:
  25                             a['expr'] = expr
  26                             f.seek(0)       # <--- reset file position to start
  27                             json.dump(data, f, indent=4)
  28                             f.truncate()
  29
  30
  31 customize_query("/home/opnfv/bottlenecks/monitor/custom-query-dashboard.json",
  32                 "Dashboard Row", "Memory Usage per Container",
  33                 "Sample Prometheus Query")