forked from Archive/PX4-Autopilot
69 lines
1.9 KiB
Python
Executable File
69 lines
1.9 KiB
Python
Executable File
#! /usr/bin/env python3
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""" Script to validate YAML file(s) against a YAML schema file """
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from __future__ import print_function
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import argparse
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import sys
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try:
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import yaml
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except ImportError as e:
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print("Failed to import yaml: " + str(e))
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print("")
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print("You may need to install it using:")
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print(" pip3 install --user pyyaml")
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print("")
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sys.exit(1)
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try:
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import cerberus
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except ImportError as e:
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print("Failed to import cerberus: " + str(e))
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print("")
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print("You may need to install it using:")
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print(" pip3 install --user cerberus")
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print("")
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sys.exit(1)
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parser = argparse.ArgumentParser(description='Validate YAML file(s) against a schema')
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parser.add_argument('yaml_file', nargs='+', help='YAML config file(s)')
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parser.add_argument('--schema-file', type=str, action='store',
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help='YAML schema file', required=True)
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parser.add_argument('-v', '--verbose', dest='verbose', action='store_true',
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help='Verbose Output')
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args = parser.parse_args()
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schema_file = args.schema_file
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yaml_files = args.yaml_file
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verbose = args.verbose
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def load_yaml_file(file_name):
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with open(file_name, 'r') as stream:
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try:
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return yaml.safe_load(stream)
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except yaml.YAMLError as exc:
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print(exc)
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raise
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# load the schema
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schema = load_yaml_file(schema_file)
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validator = cerberus.Validator(schema)
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# validate yaml files
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for yaml_file in yaml_files:
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if verbose: print("Validating {:}".format(yaml_file))
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document = load_yaml_file(yaml_file)
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# ignore top-level entries prefixed with __
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for key in list(document.keys()):
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if key.startswith('__'): del document[key]
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if not validator.validate(document):
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print("Validation Errors:")
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print(validator.errors)
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print("")
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raise Exception("Validation of {:} failed".format(yaml_file))
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