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matrix-spec/scripts/dump-swagger.py

203 lines
6.4 KiB
Python

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#!/usr/bin/env python3
# dump-swagger reads all of the swagger API docs used in spec generation and
# outputs a JSON file which merges them all, for use as input to a swagger UI
# viewer.
# See https://github.com/swagger-api/swagger-ui for details of swagger-ui.
# 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 argparse
import errno
import json
import logging
import os.path
import re
import sys
import yaml
scripts_dir = os.path.dirname(os.path.abspath(__file__))
api_dir = os.path.join(os.path.dirname(scripts_dir), "data", "api")
def resolve_references(path, schema):
if isinstance(schema, dict):
# do $ref first
if '$ref' in schema:
value = schema['$ref']
previous_path = path
path = os.path.join(os.path.dirname(path), value)
try:
with open(path, encoding="utf-8") as f:
ref = yaml.safe_load(f)
result = resolve_references(path, ref)
del schema['$ref']
path = previous_path
except FileNotFoundError:
print("Resolving {}".format(schema))
print("File not found: {}".format(path))
result = {}
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 prefix_absolute_path_references(text, base_url):
"""Adds base_url to absolute-path references.
Markdown links in descriptions may be absolute-path references.
These wont work when the spec is not hosted at the root, such as
https://spec.matrix.org/latest/
This turns all `[foo](/bar)` found in text into
`[foo](https://spec.matrix.org/latest/bar)`, with
base_url = 'https://spec.matrix.org/latest/'
"""
return text.replace("](/", "]({}/".format(base_url))
def edit_links(node, base_url):
"""Finds description nodes and makes any links in them absolute."""
if isinstance(node, dict):
for key in node:
if isinstance(node[key], str):
node[key] = prefix_absolute_path_references(node[key], base_url)
else:
edit_links(node[key], base_url)
elif isinstance(node, list):
for item in node:
edit_links(item, base_url)
parser = argparse.ArgumentParser(
"dump-swagger.py - assemble the Swagger specs into a single JSON file"
)
parser.add_argument(
"--base-url", "-b",
default="https://spec.matrix.org/unstable/",
help="""The base URL to prepend to links in descriptions. Default:
%(default)s""",
)
parser.add_argument(
"--spec-release", "-r", metavar="LABEL",
default="unstable",
help="""The spec release version to generate for. Default:
%(default)s""",
)
available_apis = {
"client-server": "Matrix Client-Server API",
"server-server": "Matrix Server-Server API",
"application-service": "Matrix Application Service API",
"identity": "Matrix Identity Service API",
"push-gateway": "Matrix Push Gateway API",
}
parser.add_argument(
"--api",
default="client-server",
choices=available_apis,
help="""The API to generate for. Default: %(default)s""",
)
parser.add_argument(
"-o", "--output",
default=os.path.join(scripts_dir, "swagger", "api-docs.json"),
help="File to write the output to. Default: %(default)s"
)
args = parser.parse_args()
output_file = os.path.abspath(args.output)
release_label = args.spec_release
selected_api = args.api
major_version = release_label
match = re.match("^(r\d+)(\.\d+)*$", major_version)
if match:
major_version = match.group(1)
base_url = args.base_url.rstrip("/")
logging.basicConfig()
output = {
"basePath": "/",
"consumes": ["application/json"],
"produces": ["application/json"],
"host": "matrix.org",
# The servers value will be picked up by RapiDoc to provide a way
# to switch API servers. Useful when one wants to test compliance
# of their server with the API.
"servers": [
{
"url": "https://{homeserver_address}/",
"variables": {
"homeserver_address": {
"default": "matrix-client.matrix.org",
"description": "The base URL for your homeserver",
}
},
}
],
"schemes": ["https"],
"info": {
"title": available_apis[selected_api],
"version": release_label,
},
"securityDefinitions": {},
"paths": {},
"swagger": "2.0",
}
selected_api_dir = os.path.join(api_dir, selected_api)
try:
with open(os.path.join(selected_api_dir, 'definitions', 'security.yaml')) as f:
output['securityDefinitions'] = yaml.safe_load(f)
except FileNotFoundError:
print("No security definitions available for this API")
for filename in os.listdir(selected_api_dir):
if not filename.endswith(".yaml"):
continue
filepath = os.path.join(selected_api_dir, filename)
print("Reading swagger API: %s" % filepath)
with open(filepath, "r") as f:
api = yaml.safe_load(f.read())
api = resolve_references(filepath, api)
basePath = api['basePath']
for path, methods in api["paths"].items():
path = basePath + path
for method, spec in methods.items():
if path not in output["paths"]:
output["paths"][path] = {}
output["paths"][path][method] = spec
edit_links(output, base_url)
print("Generating %s" % output_file)
try:
os.makedirs(os.path.dirname(output_file))
except OSError as e:
if e.errno != errno.EEXIST:
raise
with open(output_file, "w") as f:
text = json.dumps(output, sort_keys=True, indent=4)
text = text.replace("%CLIENT_RELEASE_LABEL%", release_label)
f.write(text)