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#!/usr/bin/env python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os
import sys
import traceback
import yaml
def exit_usage():
print('Usage %s <yaml file or directory>' % sys.argv[0])
sys.exit(1)
def validate(filename):
print('Validating %s' % filename)
try:
tpl = yaml.load(open(filename).read())
except Exception:
print(traceback.format_exc())
return 1
# yaml is OK, now walk the parameters and output a warning for unused ones
for p in tpl.get('parameters', {}):
str_p = '\'%s\'' % p
in_resources = str_p in str(tpl.get('resources', {}))
in_outputs = str_p in str(tpl.get('outputs', {}))
if not in_resources and not in_outputs:
print('Warning: parameter %s in template %s appears to be unused'
% (p, filename))
return 0
if len(sys.argv) < 2:
exit_usage()
path_args = sys.argv[1:]
exit_val = 0
failed_files = []
for base_path in path_args:
if os.path.isdir(base_path):
for subdir, dirs, files in os.walk(base_path):
for f in files:
if f.endswith('.yaml'):
file_path = os.path.join(subdir, f)
failed = validate(file_path)
if failed:
failed_files.append(file_path)
exit_val |= failed
elif os.path.isfile(base_path) and base_path.endswith('.yaml'):
failed = validate(base_path)
if failed:
failed_files.append(base_path)
exit_val |= failed
else:
print('Unexpected argument %s' % base_path)
exit_usage()
if failed_files:
print('Validation failed on:')
for f in failed_files:
print(f)
else:
print('Validation successful!')
sys.exit(exit_val)
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