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matrix-spec-proposals/event-schemas/check_examples.py

132 lines
4.1 KiB
Python

#!/usr/bin/env python
#
# Copyright 2016 OpenMarket Ltd
#
# 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 sys
import json
import os
import traceback
def import_error(module, package, debian, error):
sys.stderr.write((
"Error importing %(module)s: %(error)r\n"
"To install %(module)s run:\n"
" pip install %(package)s\n"
"or on Debian run:\n"
" sudo apt-get install python-%(debian)s\n"
) % locals())
if __name__ == '__main__':
sys.exit(1)
try:
import jsonschema
except ImportError as e:
import_error("jsonschema", "jsonschema", "jsonschema", e)
raise
try:
import yaml
except ImportError as e:
import_error("yaml", "PyYAML", "yaml", e)
raise
def load_file(path):
print("Loading reference: %s" % path)
if not path.startswith("file://"):
raise Exception("Bad ref: %s" % (path,))
path = path[len("file://"):]
with open(path, "r") as f:
if path.endswith(".json"):
return json.load(f)
else:
# We have to assume it's YAML because some of the YAML examples
# do not have file extensions.
return yaml.load(f)
def resolve_references(path, schema):
if isinstance(schema, dict):
# do $ref first
if '$ref' in schema:
value = schema['$ref']
path = os.path.abspath(os.path.join(os.path.dirname(path), value))
ref = load_file("file://" + path)
result = resolve_references(path, ref)
del schema['$ref']
else:
result = {}
for key, value in schema.items():
result[key] = resolve_references(path, value)
return result
elif isinstance(schema, list):
return [resolve_references(path, value) for value in schema]
else:
return schema
def check_example_file(examplepath, schemapath):
with open(examplepath) as f:
example = resolve_references(examplepath, json.load(f))
with open(schemapath) as f:
schema = yaml.load(f)
fileurl = "file://" + os.path.abspath(schemapath)
schema["id"] = fileurl
resolver = jsonschema.RefResolver(schemapath, schema, handlers={"file": load_file})
print ("Checking schema for: %r %r" % (examplepath, schemapath))
try:
jsonschema.validate(example, schema, resolver=resolver)
except Exception as e:
raise ValueError("Error validating JSON schema for %r %r" % (
examplepath, schemapath
), e)
def check_example_dir(exampledir, schemadir):
errors = []
for root, dirs, files in os.walk(exampledir):
for filename in files:
if filename.startswith("."):
# Skip over any vim .swp files.
continue
cwd = os.path.basename(os.path.dirname(os.path.join(root, filename)))
if cwd == "core":
# Skip checking the underlying definitions
continue
examplepath = os.path.join(root, filename)
schemapath = examplepath.replace(exampledir, schemadir)
if schemapath.find("#") >= 0:
schemapath = schemapath[:schemapath.find("#")]
try:
check_example_file(examplepath, schemapath)
except Exception as e:
errors.append(sys.exc_info())
for (exc_type, exc_value, exc_trace) in errors:
traceback.print_exception(exc_type, exc_value, exc_trace)
if errors:
raise ValueError("Error validating examples")
if __name__ == '__main__':
try:
check_example_dir("examples", "schema")
except:
sys.exit(1)