157 lines
4.6 KiB
Python
157 lines
4.6 KiB
Python
import types
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import typing
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from ._content import Content
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from ._headers import Headers
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from ._pool import ConnectionPool, Transport
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from ._request import Request
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from ._response import Response
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from ._streams import Stream
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from ._urls import URL
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__all__ = ["Client"]
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class Client:
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def __init__(
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self,
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url: URL | str | None = None,
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headers: Headers | typing.Mapping[str, str] | None = None,
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transport: Transport | None = None,
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):
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if url is None:
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url = ""
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if headers is None:
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headers = {"User-Agent": "dev"}
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if transport is None:
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transport = ConnectionPool()
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self.url = URL(url)
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self.headers = Headers(headers)
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self.transport = transport
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self.via = RedirectMiddleware(self.transport)
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def build_request(
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self,
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method: str,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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content: Content | Stream | bytes | None = None,
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) -> Request:
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return Request(
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method=method,
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url=self.url.join(url),
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headers=self.headers.copy_update(headers),
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content=content,
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)
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async def request(
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self,
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method: str,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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content: Content | Stream | bytes | None = None,
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) -> Response:
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request = self.build_request(method, url, headers=headers, content=content)
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async with await self.via.send(request) as response:
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await response.read()
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return response
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async def stream(
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self,
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method: str,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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content: Content | Stream | bytes | None = None,
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) -> Response:
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request = self.build_request(method, url, headers=headers, content=content)
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return await self.via.send(request)
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async def get(
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self,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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):
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return await self.request("GET", url, headers=headers)
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async def post(
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self,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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content: Content | Stream | bytes | None = None,
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):
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return await self.request("POST", url, headers=headers, content=content)
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async def put(
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self,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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content: Content | Stream | bytes | None = None,
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):
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return await self.request("PUT", url, headers=headers, content=content)
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async def patch(
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self,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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content: Content | Stream | bytes | None = None,
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):
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return await self.request("PATCH", url, headers=headers, content=content)
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async def delete(
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self,
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url: URL | str,
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headers: Headers | typing.Mapping[str, str] | None = None,
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):
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return await self.request("DELETE", url, headers=headers)
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async def close(self):
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await self.transport.close()
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async def __aenter__(self):
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return self
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async def __aexit__(
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self,
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exc_type: type[BaseException] | None = None,
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exc_value: BaseException | None = None,
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traceback: types.TracebackType | None = None
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):
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await self.close()
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def __repr__(self):
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return f"<Client [{self.transport.description()}]>"
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class RedirectMiddleware(Transport):
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def __init__(self, transport: Transport) -> None:
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self._transport = transport
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def is_redirect(self, response: Response) -> bool:
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return (
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response.status_code in (301, 302, 303, 307, 308)
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and "Location" in response.headers
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)
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def build_redirect_request(self, request: Request, response: Response) -> Request:
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raise NotImplementedError()
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async def send(self, request: Request) -> Response:
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while True:
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response = await self._transport.send(request)
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if not self.is_redirect(response):
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return response
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# If we have a redirect, then we read the body of the response.
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# Ensures that the HTTP connection is available for a new
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# request/response cycle.
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await response.read()
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await response.close()
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# We've made a request-response and now need to issue a redirect request.
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request = self.build_redirect_request(request, response)
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async def close(self):
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pass
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