💬 Improve logging (Kludex#230)

*  Improve logging

mangum/protocols/http.py

@@ -108,9 +108,6 @@ async def send(self, message: Message) -> None:
         Awaited by the application to send ASGI `http` events.
         """
         message_type = message["type"]
-        self.logger.info(
-            "%s:  '%s' event received from application.", self.state, message_type
-        )
 
         if (
             self.state is HTTPCycleState.REQUEST
@@ -141,6 +138,12 @@ async def send(self, message: Message) -> None:
                 self.state = HTTPCycleState.COMPLETE
                 await self.app_queue.put({"type": "http.disconnect"})
 
+                self.logger.info(
+                    "%s %s %s",
+                    self.request.method,
+                    self.request.path,
+                    self.response.status,
+                )
         else:
             raise UnexpectedMessage(
                 f"{self.state}: Unexpected '{message_type}' event received."

tests/test_http.py

@@ -603,3 +603,33 @@ async def app(scope, receive, send):
         "vary": "Accept-Encoding",
     }
     assert response["body"] == base64.b64encode(brotli.compress(body.encode())).decode()
+
+
+@pytest.mark.parametrize(
+    "mock_aws_api_gateway_event", [["GET", b"", None]], indirect=True
+)
+def test_http_logging(mock_aws_api_gateway_event, caplog) -> None:
+    async def app(scope, receive, send):
+        assert scope["type"] == "http"
+        await send(
+            {
+                "type": "http.response.start",
+                "status": 200,
+                "headers": [[b"content-type", b"text/plain; charset=utf-8"]],
+            }
+        )
+
+        await send({"type": "http.response.body", "body": b"Hello, world!"})
+
+    handler = Mangum(app, lifespan="off")
+    response = handler(mock_aws_api_gateway_event, {})
+
+    assert response == {
+        "statusCode": 200,
+        "isBase64Encoded": False,
+        "headers": {"content-type": "text/plain; charset=utf-8"},
+        "multiValueHeaders": {},
+        "body": "Hello, world!",
+    }
+
+    assert "GET /test/hello 200" in caplog.text