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https://github.com/osm-search/Nominatim.git
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654b652530
Most of the server implementation of V1 API now resides in api.v1.server_glue. The webframeworks only supply some glue code which is independent to changes in the API code.
67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
# SPDX-License-Identifier: GPL-2.0-only
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#
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# This file is part of Nominatim. (https://nominatim.org)
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#
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# Copyright (C) 2023 by the Nominatim developer community.
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# For a full list of authors see the git log.
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"""
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Server implementation using the starlette webserver framework.
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"""
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from typing import Any, Optional, Mapping, Callable, cast, Coroutine
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from pathlib import Path
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from starlette.applications import Starlette
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from starlette.routing import Route
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from starlette.exceptions import HTTPException
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from starlette.responses import Response
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from starlette.requests import Request
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from nominatim.api import NominatimAPIAsync
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import nominatim.api.v1 as api_impl
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class ParamWrapper(api_impl.ASGIAdaptor):
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""" Adaptor class for server glue to Starlette framework.
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"""
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def __init__(self, request: Request) -> None:
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self.request = request
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def get(self, name: str, default: Optional[str] = None) -> Optional[str]:
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return self.request.query_params.get(name, default=default)
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def get_header(self, name: str, default: Optional[str] = None) -> Optional[str]:
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return self.request.headers.get(name, default)
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def error(self, msg: str) -> HTTPException:
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return HTTPException(400, detail=msg)
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def create_response(self, status: int, output: str, content_type: str) -> Response:
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return Response(output, status_code=status, media_type=content_type)
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def _wrap_endpoint(func: api_impl.EndpointFunc)\
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-> Callable[[Request], Coroutine[Any, Any, Response]]:
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async def _callback(request: Request) -> Response:
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return cast(Response, await func(request.app.state.API, ParamWrapper(request)))
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return _callback
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def get_application(project_dir: Path,
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environ: Optional[Mapping[str, str]] = None) -> Starlette:
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""" Create a Nominatim falcon ASGI application.
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"""
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routes = []
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for name, func in api_impl.ROUTES:
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routes.append(Route(f"/{name}", endpoint=_wrap_endpoint(func)))
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app = Starlette(debug=True, routes=routes)
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app.state.API = NominatimAPIAsync(project_dir, environ)
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return app
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