add: new sample(3catchall) to describe how to cache all requests by f…

…astapi.

Dockerfile

@@ -18,6 +18,7 @@ RUN pip3 install -U setuptools pip; \
     pip3 install fastapi[standard] uvicorn watchfiles requests bs4 Jinja2 q yq pytest pytest-cov httpx
 RUN mkdir -p /app;    echo "set mouse-=a" > /root/.vimrc;
 COPY ./start.sh /usr/local/bin/start.sh
+COPY ./samples /opt/fastapi-samples
 WORKDIR /app
 ENV py_requirements=./requirements.txt
 ENV apt_requirements=./requirements-apt.txt

samples/3catchall/README.md

@@ -0,0 +1 @@
+this folder shows sample to handle any path and method including websocket.

samples/3catchall/main.py

@@ -0,0 +1,30 @@
+# cf. https://stackoverflow.com/questions/63069190/how-to-capture-arbitrary-paths-at-one-route-in-fastapi
+
+from fastapi import FastAPI, Request, WebSocket
+import json
+
+app = FastAPI()
+
+@app.get    ("/{full_path:path}")
+@app.put    ("/{full_path:path}")
+@app.post   ("/{full_path:path}")
+@app.delete ("/{full_path:path}")
+@app.options("/{full_path:path}")
+@app.patch  ("/{full_path:path}")
+@app.trace  ("/{full_path:path}")
+async def catch_all(req: Request, full_path: str):
+    body = await req.body() or '{}'
+    body = json.loads(body)
+
+#   print( {"path" : full_path, "headers": req._headers, "query": req._query_params.items(),  "reqScope": dict(req.scope) })
+    rtn ={ "method": req.scope.get("method"), "url": req.url._url, "query": dict(req._query_params),  "body": body, "Authorization": req._headers.get('Authorization'), "host" : req._headers.get('host') }
+    print(rtn)
+    return rtn
+
+@app.websocket("/{full_path:path}")
+async def catch_websocket(ws:WebSocket, full_path: str):
+    await ws.accept()
+    await ws.send_text(f'recieve connection at: {full_path}')
+    while True:
+        msg = await ws.receive_text()
+        await ws.send_text(f'got: {msg}')

samples/3catchall/requirements.txt

@@ -0,0 +1 @@
+websockets