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#!/usr/bin/env python
# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""A simple tool to go through histograms.xml and print out the owners for
histograms.
"""
from __future__ import print_function
import os
import sys
from xml.etree import ElementTree as ET
import extract_histograms
import histogram_paths
import merge_xml
sys.path.append(os.path.join(os.path.dirname(__file__), 'common'))
import path_util
def PrintOwners(root):
assert root.tag == 'histogram-configuration'
root_children = root.getchildren()
histograms = None
for node in root_children:
if node.tag == 'histograms':
histograms = node
break
assert histograms != None
for histogram in histograms.getchildren():
if histogram.tag != 'histogram':
continue
name = histogram.attrib['name']
owners = []
obsolete = False
for node in histogram.getchildren():
if node.tag == 'obsolete':
obsolete = True
continue
if node.tag != 'owner':
continue
if node.text == extract_histograms.OWNER_PLACEHOLDER:
continue
owners.append(node.text)
if not obsolete:
if owners:
print(name, ' '.join(owners))
else:
print(name, 'NO_OWNER')
def main():
"""Prints the owners of histograms in a specific file or of all histograms.
Args:
argv[1]: Optional argument that is the relative path to a specific
histograms.xml.
Example usage to print owners of metadata/Accessibility/histograms.xml:
python histogram_ownership.py metadata/Accessibility/histograms.xml
Example usage to print owners of all histograms:
python histogram_ownership.py
"""
if len(sys.argv) == 1:
merged_xml_string = merge_xml.MergeFiles(
histogram_paths.ALL_XMLS, should_expand_owners=True).toxml()
root = ET.fromstring(merged_xml_string)
else:
rel_path = path_util.GetInputFile(
os.path.join('tools', 'metrics', 'histograms', sys.argv[1]))
if not os.path.exists(rel_path):
raise ValueError("A histograms.xml file does not exist in %s" % rel_path)
tree = ET.parse(rel_path)
root = tree.getroot()
PrintOwners(root)
if __name__ == '__main__':
main()
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