mirror of https://github.com/zulip/zulip.git
646 lines
23 KiB
Python
646 lines
23 KiB
Python
# Zulip's OpenAPI-based API documentation system is documented at
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# https://zulip.readthedocs.io/en/latest/documentation/api.html
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#
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# This file defines the special Markdown extension that is used to
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# render the code examples, example responses, etc. that appear in
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# Zulip's public API documentation.
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import inspect
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import json
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import re
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import shlex
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from textwrap import dedent
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from typing import Any, Dict, List, Mapping, Optional, Pattern, Tuple
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import markdown
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from django.conf import settings
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from markdown.extensions import Extension
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from markdown.preprocessors import Preprocessor
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import zerver.openapi.python_examples
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from zerver.openapi.openapi import (
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check_additional_imports,
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check_requires_administrator,
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generate_openapi_fixture,
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get_curl_include_exclude,
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get_openapi_description,
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get_openapi_summary,
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get_parameters_description,
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get_responses_description,
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openapi_spec,
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)
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MACRO_REGEXP = re.compile(
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r"\{generate_code_example(\(\s*(.+?)\s*\))*\|\s*(.+?)\s*\|\s*(.+?)\s*(\(\s*(.+)\s*\))?\}"
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)
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PYTHON_EXAMPLE_REGEX = re.compile(r"\# \{code_example\|\s*(.+?)\s*\}")
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JS_EXAMPLE_REGEX = re.compile(r"\/\/ \{code_example\|\s*(.+?)\s*\}")
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MACRO_REGEXP_DESC = re.compile(r"\{generate_api_description(\(\s*(.+?)\s*\))}")
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MACRO_REGEXP_TITLE = re.compile(r"\{generate_api_title(\(\s*(.+?)\s*\))}")
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MACRO_REGEXP_RESPONSE_DESC = re.compile(r"\{generate_response_description(\(\s*(.+?)\s*\))}")
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MACRO_REGEXP_PARAMETER_DESC = re.compile(r"\{generate_parameter_description(\(\s*(.+?)\s*\))}")
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PYTHON_CLIENT_CONFIG = """
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#!/usr/bin/env python3
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import zulip
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# Pass the path to your zuliprc file here.
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client = zulip.Client(config_file="~/zuliprc")
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"""
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PYTHON_CLIENT_ADMIN_CONFIG = """
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#!/usr/bin/env python
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import zulip
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# The user for this zuliprc file must be an organization administrator
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client = zulip.Client(config_file="~/zuliprc-admin")
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"""
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JS_CLIENT_CONFIG = """
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const zulipInit = require("zulip-js");
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// Pass the path to your zuliprc file here.
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const config = { zuliprc: "zuliprc" };
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"""
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JS_CLIENT_ADMIN_CONFIG = """
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const zulipInit = require("zulip-js");
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// The user for this zuliprc file must be an organization administrator.
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const config = { zuliprc: "zuliprc-admin" };
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"""
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DEFAULT_AUTH_EMAIL = "BOT_EMAIL_ADDRESS"
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DEFAULT_AUTH_API_KEY = "BOT_API_KEY"
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DEFAULT_EXAMPLE = {
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"integer": 1,
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"string": "demo",
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"boolean": False,
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}
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ADMIN_CONFIG_LANGUAGES = ["python", "javascript"]
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def parse_language_and_options(input_str: Optional[str]) -> Tuple[str, Dict[str, Any]]:
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if not input_str:
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return ("", {})
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language_and_options = re.match(
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r"(?P<language>\w+)(,\s*(?P<options>[\"\'\w\d\[\],= ]+))?", input_str
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)
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assert language_and_options is not None
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kwargs_pattern = re.compile(r"(?P<key>\w+)\s*=\s*(?P<value>[\'\"\w\d]+|\[[\'\",\w\d ]+\])")
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language = language_and_options.group("language")
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assert language is not None
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if language_and_options.group("options"):
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_options = kwargs_pattern.finditer(language_and_options.group("options"))
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options = {}
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for m in _options:
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options[m.group("key")] = json.loads(m.group("value").replace("'", '"'))
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return (language, options)
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return (language, {})
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def extract_code_example(
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source: List[str], snippet: List[Any], example_regex: Pattern[str]
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) -> List[Any]:
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start = -1
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end = -1
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for line in source:
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match = example_regex.search(line)
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if match:
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if match.group(1) == "start":
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start = source.index(line)
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elif match.group(1) == "end":
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end = source.index(line)
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break
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if start == -1 and end == -1:
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return snippet
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snippet.append(source[start + 1 : end])
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source = source[end + 1 :]
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return extract_code_example(source, snippet, example_regex)
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def render_python_code_example(
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function: str, admin_config: bool = False, **kwargs: Any
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) -> List[str]:
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if function not in zerver.openapi.python_examples.TEST_FUNCTIONS:
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return []
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method = zerver.openapi.python_examples.TEST_FUNCTIONS[function]
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function_source_lines = inspect.getsourcelines(method)[0]
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if admin_config:
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config_string = PYTHON_CLIENT_ADMIN_CONFIG
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else:
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config_string = PYTHON_CLIENT_CONFIG
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endpoint, endpoint_method = function.split(":")
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extra_imports = check_additional_imports(endpoint, endpoint_method)
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if extra_imports:
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extra_imports = sorted(extra_imports + ["zulip"])
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extra_imports = [f"import {each_import}" for each_import in extra_imports]
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config_string = config_string.replace("import zulip", "\n".join(extra_imports))
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config = config_string.splitlines()
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snippets = extract_code_example(function_source_lines, [], PYTHON_EXAMPLE_REGEX)
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code_example = ["{tab|python}\n"]
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code_example.append("```python")
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code_example.extend(config)
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for snippet in snippets:
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for line in snippet:
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# Remove one level of indentation and strip newlines
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code_example.append(line[4:].rstrip())
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code_example.append("print(result)")
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code_example.append("\n")
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code_example.append("```")
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return code_example
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def render_javascript_code_example(
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function: str, admin_config: bool = False, **kwargs: Any
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) -> List[str]:
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pattern = fr'^add_example\(\s*"[^"]*",\s*{re.escape(json.dumps(function))},\s*\d+,\s*async \(client, console\) => \{{\n(.*?)^(?:\}}| *\}},\n)\);$'
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with open("zerver/openapi/javascript_examples.js") as f:
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m = re.search(pattern, f.read(), re.M | re.S)
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if m is None:
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return []
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function_source_lines = dedent(m.group(1)).splitlines()
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snippets = extract_code_example(function_source_lines, [], JS_EXAMPLE_REGEX)
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if admin_config:
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config = JS_CLIENT_ADMIN_CONFIG.splitlines()
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else:
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config = JS_CLIENT_CONFIG.splitlines()
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code_example = [
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"{tab|js}\n",
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"More examples and documentation can be found [here](https://github.com/zulip/zulip-js).",
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]
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code_example.append("```js")
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code_example.extend(config)
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code_example.append("(async () => {")
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code_example.append(" const client = await zulipInit(config);")
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for snippet in snippets:
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code_example.append("")
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for line in snippet:
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# Strip newlines
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code_example.append(" " + line.rstrip())
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code_example.append("})();")
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code_example.append("```")
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return code_example
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def curl_method_arguments(endpoint: str, method: str, api_url: str) -> List[str]:
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# We also include the -sS verbosity arguments here.
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method = method.upper()
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url = f"{api_url}/v1{endpoint}"
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valid_methods = ["GET", "POST", "DELETE", "PUT", "PATCH", "OPTIONS"]
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if method == "GET":
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# Then we need to make sure that each -d option translates to becoming
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# a GET parameter (in the URL) and not a POST parameter (in the body).
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# TODO: remove the -X part by updating the linting rule. It's redundant.
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return ["-sSX", "GET", "-G", url]
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elif method in valid_methods:
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return ["-sSX", method, url]
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else:
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msg = f"The request method {method} is not one of {valid_methods}"
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raise ValueError(msg)
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def get_openapi_param_example_value_as_string(
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endpoint: str, method: str, param: Dict[str, Any], curl_argument: bool = False
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) -> str:
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jsonify = False
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param_name = param["name"]
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if "content" in param:
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param = param["content"]["application/json"]
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jsonify = True
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if "type" in param["schema"]:
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param_type = param["schema"]["type"]
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else:
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# Hack: Ideally, we'd extract a common function for handling
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# oneOf values in types and do something with the resulting
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# union type. But for this logic's purpose, it's good enough
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# to just check the first parameter.
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param_type = param["schema"]["oneOf"][0]["type"]
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if param_type in ["object", "array"]:
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example_value = param.get("example", None)
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if not example_value:
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msg = f"""All array and object type request parameters must have
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concrete examples. The openAPI documentation for {endpoint}/{method} is missing an example
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value for the {param_name} parameter. Without this we cannot automatically generate a
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cURL example."""
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raise ValueError(msg)
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ordered_ex_val_str = json.dumps(example_value, sort_keys=True)
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# We currently don't have any non-JSON encoded arrays.
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assert jsonify
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if curl_argument:
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return " --data-urlencode " + shlex.quote(f"{param_name}={ordered_ex_val_str}")
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return ordered_ex_val_str # nocoverage
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else:
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example_value = param.get("example", DEFAULT_EXAMPLE[param_type])
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if isinstance(example_value, bool):
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# Booleans are effectively JSON-encoded, in that we pass
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# true/false, not the Python str(True) = "True"
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jsonify = True
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if jsonify:
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example_value = json.dumps(example_value)
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if curl_argument:
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return " --data-urlencode " + shlex.quote(f"{param_name}={example_value}")
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return example_value
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def generate_curl_example(
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endpoint: str,
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method: str,
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api_url: str,
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auth_email: str = DEFAULT_AUTH_EMAIL,
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auth_api_key: str = DEFAULT_AUTH_API_KEY,
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exclude: Optional[List[str]] = None,
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include: Optional[List[str]] = None,
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) -> List[str]:
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lines = ["```curl"]
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operation = endpoint + ":" + method.lower()
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operation_entry = openapi_spec.openapi()["paths"][endpoint][method.lower()]
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global_security = openapi_spec.openapi()["security"]
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operation_params = operation_entry.get("parameters", [])
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operation_request_body = operation_entry.get("requestBody", None)
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operation_security = operation_entry.get("security", None)
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if settings.RUNNING_OPENAPI_CURL_TEST: # nocoverage
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from zerver.openapi.curl_param_value_generators import patch_openapi_example_values
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operation_params, operation_request_body = patch_openapi_example_values(
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operation, operation_params, operation_request_body
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)
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format_dict = {}
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for param in operation_params:
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if param["in"] != "path":
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continue
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example_value = get_openapi_param_example_value_as_string(endpoint, method, param)
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format_dict[param["name"]] = example_value
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example_endpoint = endpoint.format_map(format_dict)
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curl_first_line_parts = ["curl", *curl_method_arguments(example_endpoint, method, api_url)]
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lines.append(" ".join(map(shlex.quote, curl_first_line_parts)))
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insecure_operations = ["/dev_fetch_api_key:post", "/fetch_api_key:post"]
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if operation_security is None:
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if global_security == [{"basicAuth": []}]:
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authentication_required = True
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else:
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raise AssertionError(
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"Unhandled global securityScheme."
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+ " Please update the code to handle this scheme."
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)
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elif operation_security == []:
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if operation in insecure_operations:
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authentication_required = False
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else:
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raise AssertionError(
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"Unknown operation without a securityScheme. "
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+ "Please update insecure_operations."
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)
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else:
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raise AssertionError(
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"Unhandled securityScheme. Please update the code to handle this scheme."
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)
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if authentication_required:
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lines.append(" -u " + shlex.quote(f"{auth_email}:{auth_api_key}"))
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for param in operation_params:
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if param["in"] == "path":
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continue
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param_name = param["name"]
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if include is not None and param_name not in include:
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continue
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if exclude is not None and param_name in exclude:
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continue
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example_value = get_openapi_param_example_value_as_string(
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endpoint, method, param, curl_argument=True
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)
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lines.append(example_value)
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if "requestBody" in operation_entry:
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properties = operation_entry["requestBody"]["content"]["multipart/form-data"]["schema"][
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"properties"
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]
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for key, property in properties.items():
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lines.append(" -F " + shlex.quote("{}=@{}".format(key, property["example"])))
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for i in range(1, len(lines) - 1):
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lines[i] = lines[i] + " \\"
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lines.append("```")
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return lines
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def render_curl_example(
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function: str,
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api_url: str,
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) -> List[str]:
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"""A simple wrapper around generate_curl_example."""
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parts = function.split(":")
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endpoint = parts[0]
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method = parts[1]
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kwargs: Dict[str, Any] = {}
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if len(parts) > 2:
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kwargs["auth_email"] = parts[2]
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if len(parts) > 3:
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kwargs["auth_api_key"] = parts[3]
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kwargs["api_url"] = api_url
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rendered_example = []
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for element in get_curl_include_exclude(endpoint, method):
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kwargs["include"] = None
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kwargs["exclude"] = None
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if element["type"] == "include":
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kwargs["include"] = element["parameters"]["enum"]
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if element["type"] == "exclude":
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kwargs["exclude"] = element["parameters"]["enum"]
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if "description" in element:
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rendered_example.extend(element["description"].splitlines())
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rendered_example = rendered_example + generate_curl_example(endpoint, method, **kwargs)
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return rendered_example
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SUPPORTED_LANGUAGES: Dict[str, Any] = {
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"python": {
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"client_config": PYTHON_CLIENT_CONFIG,
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"admin_config": PYTHON_CLIENT_ADMIN_CONFIG,
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"render": render_python_code_example,
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},
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"curl": {
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"render": render_curl_example,
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},
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"javascript": {
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"client_config": JS_CLIENT_CONFIG,
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"admin_config": JS_CLIENT_ADMIN_CONFIG,
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"render": render_javascript_code_example,
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},
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}
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class APIMarkdownExtension(Extension):
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def __init__(self, api_url: Optional[str]) -> None:
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self.config = {
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"api_url": [
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api_url,
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"API URL to use when rendering curl examples",
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],
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}
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def extendMarkdown(self, md: markdown.Markdown) -> None:
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md.preprocessors.register(
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APICodeExamplesPreprocessor(md, self.getConfigs()), "generate_code_example", 525
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)
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md.preprocessors.register(
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APIDescriptionPreprocessor(md, self.getConfigs()), "generate_api_description", 530
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)
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md.preprocessors.register(
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APITitlePreprocessor(md, self.getConfigs()), "generate_api_title", 531
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)
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md.preprocessors.register(
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ResponseDescriptionPreprocessor(md, self.getConfigs()),
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"generate_response_description",
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531,
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)
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md.preprocessors.register(
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ParameterDescriptionPreprocessor(md, self.getConfigs()),
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"generate_parameter_description",
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535,
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)
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class APICodeExamplesPreprocessor(Preprocessor):
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def __init__(self, md: markdown.Markdown, config: Mapping[str, Any]) -> None:
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super().__init__(md)
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self.api_url = config["api_url"]
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def run(self, lines: List[str]) -> List[str]:
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done = False
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while not done:
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for line in lines:
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loc = lines.index(line)
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match = MACRO_REGEXP.search(line)
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if match:
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language, options = parse_language_and_options(match.group(2))
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function = match.group(3)
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key = match.group(4)
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argument = match.group(6)
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if self.api_url is None:
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raise AssertionError("Cannot render curl API examples without API URL set.")
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options["api_url"] = self.api_url
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if key == "fixture":
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if argument:
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text = self.render_fixture(function, name=argument)
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elif key == "example":
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path, method = function.rsplit(":", 1)
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if language in ADMIN_CONFIG_LANGUAGES and check_requires_administrator(
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path, method
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):
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text = SUPPORTED_LANGUAGES[language]["render"](
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function, admin_config=True
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)
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else:
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text = SUPPORTED_LANGUAGES[language]["render"](function, **options)
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# The line that contains the directive to include the macro
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# may be preceded or followed by text or tags, in that case
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# we need to make sure that any preceding or following text
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# stays the same.
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line_split = MACRO_REGEXP.split(line, maxsplit=0)
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preceding = line_split[0]
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following = line_split[-1]
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text = [preceding, *text, following]
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lines = lines[:loc] + text + lines[loc + 1 :]
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break
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else:
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done = True
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return lines
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def render_fixture(self, function: str, name: str) -> List[str]:
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path, method = function.rsplit(":", 1)
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return generate_openapi_fixture(path, method, name)
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class APIDescriptionPreprocessor(Preprocessor):
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def __init__(self, md: markdown.Markdown, config: Mapping[str, Any]) -> None:
|
|
super().__init__(md)
|
|
self.api_url = config["api_url"]
|
|
|
|
def run(self, lines: List[str]) -> List[str]:
|
|
done = False
|
|
while not done:
|
|
for line in lines:
|
|
loc = lines.index(line)
|
|
match = MACRO_REGEXP_DESC.search(line)
|
|
|
|
if match:
|
|
function = match.group(2)
|
|
text = self.render_description(function)
|
|
# The line that contains the directive to include the macro
|
|
# may be preceded or followed by text or tags, in that case
|
|
# we need to make sure that any preceding or following text
|
|
# stays the same.
|
|
line_split = MACRO_REGEXP_DESC.split(line, maxsplit=0)
|
|
preceding = line_split[0]
|
|
following = line_split[-1]
|
|
text = [preceding, *text, following]
|
|
lines = lines[:loc] + text + lines[loc + 1 :]
|
|
break
|
|
else:
|
|
done = True
|
|
return lines
|
|
|
|
def render_description(self, function: str) -> List[str]:
|
|
description: List[str] = []
|
|
path, method = function.rsplit(":", 1)
|
|
description_dict = get_openapi_description(path, method)
|
|
description_dict = description_dict.replace("{{api_url}}", self.api_url)
|
|
description.extend(description_dict.splitlines())
|
|
return description
|
|
|
|
|
|
class APITitlePreprocessor(Preprocessor):
|
|
def __init__(self, md: markdown.Markdown, config: Mapping[str, Any]) -> None:
|
|
super().__init__(md)
|
|
self.api_url = config["api_url"]
|
|
|
|
def run(self, lines: List[str]) -> List[str]:
|
|
done = False
|
|
while not done:
|
|
for line in lines:
|
|
loc = lines.index(line)
|
|
match = MACRO_REGEXP_TITLE.search(line)
|
|
|
|
if match:
|
|
function = match.group(2)
|
|
text = self.render_title(function)
|
|
# The line that contains the directive to include the macro
|
|
# may be preceded or followed by text or tags, in that case
|
|
# we need to make sure that any preceding or following text
|
|
# stays the same.
|
|
line_split = MACRO_REGEXP_TITLE.split(line, maxsplit=0)
|
|
preceding = line_split[0]
|
|
following = line_split[-1]
|
|
text = [preceding, *text, following]
|
|
lines = lines[:loc] + text + lines[loc + 1 :]
|
|
break
|
|
else:
|
|
done = True
|
|
return lines
|
|
|
|
def render_title(self, function: str) -> List[str]:
|
|
title: List[str] = []
|
|
path, method = function.rsplit(":", 1)
|
|
raw_title = get_openapi_summary(path, method)
|
|
title.extend(raw_title.splitlines())
|
|
title = ["# " + line for line in title]
|
|
if check_requires_administrator(path, method):
|
|
title.append("{!api-admin-only.md!}")
|
|
return title
|
|
|
|
|
|
class ResponseDescriptionPreprocessor(Preprocessor):
|
|
def __init__(self, md: markdown.Markdown, config: Mapping[str, Any]) -> None:
|
|
super().__init__(md)
|
|
self.api_url = config["api_url"]
|
|
|
|
def run(self, lines: List[str]) -> List[str]:
|
|
done = False
|
|
while not done:
|
|
for line in lines:
|
|
loc = lines.index(line)
|
|
match = MACRO_REGEXP_RESPONSE_DESC.search(line)
|
|
|
|
if match:
|
|
function = match.group(2)
|
|
text = self.render_responses_description(function)
|
|
# The line that contains the directive to include the macro
|
|
# may be preceded or followed by text or tags, in that case
|
|
# we need to make sure that any preceding or following text
|
|
# stays the same.
|
|
line_split = MACRO_REGEXP_RESPONSE_DESC.split(line, maxsplit=0)
|
|
preceding = line_split[0]
|
|
following = line_split[-1]
|
|
text = [preceding, *text, following]
|
|
lines = lines[:loc] + text + lines[loc + 1 :]
|
|
break
|
|
else:
|
|
done = True
|
|
return lines
|
|
|
|
def render_responses_description(self, function: str) -> List[str]:
|
|
description: List[str] = []
|
|
path, method = function.rsplit(":", 1)
|
|
raw_description = get_responses_description(path, method)
|
|
description.extend(raw_description.splitlines())
|
|
return description
|
|
|
|
|
|
class ParameterDescriptionPreprocessor(Preprocessor):
|
|
def __init__(self, md: markdown.Markdown, config: Mapping[str, Any]) -> None:
|
|
super().__init__(md)
|
|
self.api_url = config["api_url"]
|
|
|
|
def run(self, lines: List[str]) -> List[str]:
|
|
done = False
|
|
while not done:
|
|
for line in lines:
|
|
loc = lines.index(line)
|
|
match = MACRO_REGEXP_PARAMETER_DESC.search(line)
|
|
|
|
if match:
|
|
function = match.group(2)
|
|
text = self.render_parameters_description(function)
|
|
# The line that contains the directive to include the macro
|
|
# may be preceded or followed by text or tags, in that case
|
|
# we need to make sure that any preceding or following text
|
|
# stays the same.
|
|
line_split = MACRO_REGEXP_PARAMETER_DESC.split(line, maxsplit=0)
|
|
preceding = line_split[0]
|
|
following = line_split[-1]
|
|
text = [preceding, *text, following]
|
|
lines = lines[:loc] + text + lines[loc + 1 :]
|
|
break
|
|
else:
|
|
done = True
|
|
return lines
|
|
|
|
def render_parameters_description(self, function: str) -> List[str]:
|
|
description: List[str] = []
|
|
path, method = function.rsplit(":", 1)
|
|
raw_description = get_parameters_description(path, method)
|
|
description.extend(raw_description.splitlines())
|
|
return description
|
|
|
|
|
|
def makeExtension(*args: Any, **kwargs: str) -> APIMarkdownExtension:
|
|
return APIMarkdownExtension(*args, **kwargs)
|