[mini-relay] collect data (#348)

docker-compose.yml

@@ -28,6 +28,7 @@ services:
     build: mini-relay
     init: true
     ports: [9989:9989]
+    volumes: [./mini-relay/data:/data:rw]
   postgres:
     image: 'postgres:alpine'
     environment:

mini-relay/app.py

@@ -1,13 +1,25 @@
 from __future__ import annotations
 
+import os
+import gzip
+import time
+
 import flask
 
 app = flask.Flask(__name__)
 
 
 @app.post('/api/<p>/envelope/')
 def envelope(p: str) -> flask.Response:
-    # TODO: save out flask.request.data
+    if flask.request.headers.get('content-encoding', 'identity') == 'gzip':
+        data = gzip.decompress(flask.request.data)
+    else:
+        data = flask.request.data
+
+    os.makedirs(f'/data/{p}', exist_ok=True)
+    with open(f'/data/{p}/{time.monotonic()}', 'wb') as f:
+        f.write(data)
+
     ret = app.make_response(('', 204))
     ret.access_control_allow_origin = '*'
     return ret

mini-relay/data/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore