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# Copyright 2024 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import sys
import xml.dom.minidom
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'ukm'))
import xml_validations
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'histograms'))
import extract_histograms
import histogram_paths
import merge_xml
class DwaXmlValidation(xml_validations.UkmXmlValidation):
"""Validations for the content of dwa.xml."""
def __init__(self, dwa_config: xml.dom.minidom.Element) -> None:
"""Attributes:
config: A XML minidom Element representing the root node of the DWA config
tree.
"""
super().__init__(dwa_config)
def checkMetricTypeIsSpecified(self):
"""Checks each metric is either specified with an enum or a unit."""
errors = []
enum_tree = merge_xml.MergeFiles(histogram_paths.ENUMS_XMLS)
enums, _ = extract_histograms.ExtractEnumsFromXmlTree(enum_tree)
for event_node in self.config.getElementsByTagName('event'):
for metric_node in event_node.getElementsByTagName('metric'):
if metric_node.hasAttribute('enum'):
enum_name = metric_node.getAttribute('enum')
# Check if the enum is defined in enums.xml.
if enum_name not in enums:
errors.append("Unknown enum %s in dwa metric %s:%s." %
(enum_name, event_node.getAttribute('name'),
metric_node.getAttribute('name')))
is_success = not errors
return (is_success, errors)
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