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"""Rest API utilities module.""" |
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# pylint: disable=self-assigning-variable |
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import json |
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from datetime import datetime |
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from typing import Any, Optional |
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from asgiref.sync import async_to_sync |
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from openapi_core.contrib.starlette import \ |
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StarletteOpenAPIRequest as _StarletteOpenAPIRequest |
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from openapi_core.validation.request.datatypes import RequestParameters |
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from starlette.exceptions import HTTPException |
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from starlette.requests import Request |
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from starlette.responses import JSONResponse as StarletteJSONResponse |
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from starlette.responses import Response |
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Request = Request |
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Response = Response |
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HTTPException = HTTPException |
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def _json_serializer(obj): |
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if isinstance(obj, datetime): |
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return obj.isoformat() |
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raise TypeError(f"Type {type(obj)} not serializable") |
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def get_body(request: Request) -> bytes: |
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"""Try to get request.body form a sync @rest route.""" |
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body = async_to_sync(request.body) |
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return body() |
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def get_json(request: Request) -> Any: |
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"""Try to get request.json from a sync @rest route. |
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It might raise json.decoder.JSONDecodeError. |
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""" |
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json_body = async_to_sync(request.json) |
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return json_body() |
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def get_json_or_400(request: Request) -> Any: |
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"""Try to get request.json from a sync @rest route or HTTPException 400.""" |
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try: |
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return get_json(request) |
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except (json.decoder.JSONDecodeError, TypeError) as exc: |
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raise HTTPException(400, detail=f"Invalid json: {str(exc)}") |
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async def aget_json_or_400(request: Request) -> Any: |
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"""Try to get request.json from async @rest route or HTTPException 400.""" |
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try: |
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return await request.json() |
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except (json.decoder.JSONDecodeError, TypeError) as exc: |
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raise HTTPException(400, detail=f"Invalid json: {str(exc)}") |
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def content_type_json_or_415(request: Request) -> Optional[str]: |
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"""Ensures request Content-Type is application/json or raises 415.""" |
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content_type = request.headers.get("Content-Type") |
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if content_type != "application/json": |
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err = "Expected Content-Type: application/json, " \ |
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f"got: {content_type}" |
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raise HTTPException(415, detail=err) |
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return content_type |
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class JSONResponse(StarletteJSONResponse): |
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"""JSONResponse with custom default serializer that supports datetime.""" |
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media_type = "application/json" |
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def render(self, content) -> bytes: |
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return json.dumps( |
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content, |
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ensure_ascii=False, |
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allow_nan=False, |
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indent=None, |
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separators=(",", ":"), |
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default=_json_serializer, |
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).encode("utf-8") |
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# pylint: disable=super-init-not-called |
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View Code Duplication |
class AStarletteOpenAPIRequest(_StarletteOpenAPIRequest): |
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"""Async StarletteOpenAPIRequest.""" |
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def __init__(self, request: Request, body: bytes) -> None: |
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"""Constructor of AsycnStarletteOpenAPIRequest. |
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This constructor doesn't call super().__init__() to keep it async |
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""" |
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self.request = request |
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self.parameters = RequestParameters( |
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query=self.request.query_params, |
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header=self.request.headers, |
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cookie=self.request.cookies, |
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) |
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self._body = body |
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@property |
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def body(self) -> Optional[str]: |
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body = self._body |
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if body is None: |
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return None |
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return body.decode("utf-8") |
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# pylint: disable=super-init-not-called |
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View Code Duplication |
class StarletteOpenAPIRequest(_StarletteOpenAPIRequest): |
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"""Sync StarletteOpenAPIRequest.""" |
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111
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def __init__(self, request: Request, body: bytes) -> None: |
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"""Constructor of AsycnStarletteOpenAPIRequest. |
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114
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This constructor doesn't call super().__init__() to keep it async |
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""" |
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self.request = request |
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self.parameters = RequestParameters( |
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query=self.request.query_params, |
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header=self.request.headers, |
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cookie=self.request.cookies, |
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) |
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self._body = body |
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@property |
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def body(self) -> Optional[str]: |
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body = self._body |
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if body is None: |
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return None |
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return body.decode("utf-8") |
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kytos-ng /
kytos
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