httpx client

src/dataclass_rest/http/httpx.py

@@ -0,0 +1,141 @@
+import urllib.parse
+from json import JSONDecodeError
+from typing import Any, Optional, Tuple
+
+from httpx import AsyncClient, Response, HTTPError, Client
+
+from dataclass_rest.base_client import BaseClient
+from dataclass_rest.boundmethod import AsyncMethod, SyncMethod
+from dataclass_rest.exceptions import (
+    ClientError,
+    ClientLibraryError,
+    MalformedResponse,
+    ServerError,
+)
+from dataclass_rest.http_request import HttpRequest, File
+
+
+class AsyncHttpxMethod(AsyncMethod):
+    def _on_error_default(self, response: Response) -> Any:
+        if 400 <= response.status_code < 500:
+            raise ClientError(response.status_code)
+        else:
+            raise ServerError(response.status_code)
+
+    async def _release_raw_response(self, response: Response) -> None:
+        await response.aclose()
+
+    async def _response_body(self, response: Response) -> Any:
+        try:
+            return response.json()
+        except HTTPError as e:
+            raise ClientLibraryError from e
+        except JSONDecodeError as e:
+            raise MalformedResponse from e
+
+    async def _response_ok(self, response: Response) -> bool:
+        return response.is_success
+
+
+class AsyncHttpxClient(BaseClient):
+    method_class = AsyncHttpxMethod
+
+    def __init__(
+            self,
+            base_url: str,
+            client: Optional[AsyncClient] = None,
+    ):
+        super().__init__()
+        self.client = client or AsyncClient()
+        self.base_url = base_url
+
+    def _prepare_file(self, fieldname: str, file: File) -> Tuple:
+        return (file.filename or fieldname, file.contents, file.content_type)
+
+    async def do_request(self, request: HttpRequest) -> Any:
+        if request.is_json_request:
+            json = request.data
+            data = None
+        else:
+            json = None
+            data = request.data
+
+        files = {
+            name: self._prepare_file(name, file)
+            for name, file in request.files.items()
+        }
+        try:
+            return await self.client.request(
+                url=urllib.parse.urljoin(self.base_url, request.url),
+                method=request.method,
+                json=json,
+                params=request.query_params,
+                data=data,
+                headers=request.headers,
+                files=files,
+            )
+        except HTTPError as e:
+            raise ClientLibraryError from e
+
+
+class HttpxMethod(SyncMethod):
+    def _on_error_default(self, response: Response) -> Any:
+        if 400 <= response.status_code < 500:
+            raise ClientError(response.status_code)
+        else:
+            raise ServerError(response.status_code)
+
+    def _release_raw_response(self, response: Response) -> None:
+        response.aclose()
+
+    def _response_body(self, response: Response) -> Any:
+        try:
+            return response.json()
+        except HTTPError as e:
+            raise ClientLibraryError from e
+        except JSONDecodeError as e:
+            raise MalformedResponse from e
+
+    def _response_ok(self, response: Response) -> bool:
+        return response.is_success
+
+
+class HttpxClient(BaseClient):
+    method_class = HttpxMethod
+
+    def __init__(
+            self,
+            base_url: str,
+            client: Optional[Client] = None,
+    ):
+        super().__init__()
+        self.client = client or Client()
+        self.base_url = base_url
+
+    def _prepare_file(self, fieldname: str, file: File) -> Tuple:
+        return (file.filename or fieldname, file.contents, file.content_type)
+
+    def do_request(self, request: HttpRequest) -> Any:
+        if request.is_json_request:
+            json = request.data
+            data = None
+        else:
+            json = None
+            data = request.data
+
+        files = {
+            name: self._prepare_file(name, file)
+            for name, file in request.files.items()
+        }
+        try:
+            return self.client.request(
+                url=urllib.parse.urljoin(self.base_url, request.url),
+                method=request.method,
+                json=json,
+                params=request.query_params,
+                data=data,
+                headers=request.headers,
+                files=files,
+            )
+        except HTTPError as e:
+            raise ClientLibraryError from e