tools/metrics/histograms/histogram_ownership.py

   1 #!/usr/bin/env python
   2 # Copyright 2014 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """A simple tool to go through histograms.xml and print out the owners for
   7 histograms.
   8 """
   9
  10 import xml.etree.ElementTree
  11
  12 DUMMY_OWNER = "Please list the metric's owners. Add more owner tags as needed."
  13
  14 def main():
  15   tree = xml.etree.ElementTree.parse('histograms.xml')
  16   root = tree.getroot()
  17   assert root.tag == 'histogram-configuration'
  18
  19   root_children = root.getchildren()
  20   histograms = None
  21   for node in root_children:
  22     if node.tag == 'histograms':
  23       histograms = node
  24       break
  25   assert histograms != None
  26
  27   for histogram in histograms.getchildren():
  28     if histogram.tag != 'histogram':
  29       continue
  30
  31     name = histogram.attrib['name']
  32     owners = []
  33     obsolete = False
  34     for node in histogram.getchildren():
  35       if node.tag == 'obsolete':
  36         obsolete = True
  37         continue
  38       if node.tag != 'owner':
  39         continue
  40       if node.text == DUMMY_OWNER:
  41         continue
  42       assert '@' in node.text
  43       owners.append(node.text)
  44
  45     if not obsolete:
  46       if owners:
  47         print name, ' '.join(owners)
  48       else:
  49         print name, 'NO_OWNER'
  50
  51 if __name__ == '__main__':
  52   main()