From a6fad80ca7c3681ea9c90b3713cbc0c61eac44b7 Mon Sep 17 00:00:00 2001
From: Guilhem Saurel <guilhem.saurel@laas.fr>
Date: Fri, 14 Feb 2020 19:18:51 +0100
Subject: [PATCH] =?UTF-8?q?http.server=20=E2=86=92=20aiohttp.web?=
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---
 Dockerfile        |  3 +-
 matrix_webhook.py | 78 +++++++++++++++++++++++++----------------------
 2 files changed, 44 insertions(+), 37 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 506a076..c9b7df0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,8 @@ FROM python:3.7-alpine
 EXPOSE 4785
 
 RUN pip3 install --no-cache-dir \
-    matrix-client
+    aiohttp \
+    matrix-nio
 
 ADD matrix_webhook.py /
 
diff --git a/matrix_webhook.py b/matrix_webhook.py
index 0cbfaaf..6bc0e67 100755
--- a/matrix_webhook.py
+++ b/matrix_webhook.py
@@ -4,10 +4,11 @@ Matrix Webhook
 Post a message to a matrix room with a simple HTTP POST
 """
 
+import asyncio
 import json
 import os
-from http.server import BaseHTTPRequestHandler, HTTPServer
 
+from aiohttp import web
 from matrix_client.client import MatrixClient
 
 SERVER_ADDRESS = ('', int(os.environ.get('PORT', 4785)))
@@ -16,47 +17,52 @@ MATRIX_ID = os.environ.get('MATRIX_ID', 'wwm')
 MATRIX_PW = os.environ['MATRIX_PW']
 API_KEY = os.environ['API_KEY']
 
+client = MatrixClient(MATRIX_URL)
+client.login(username=MATRIX_ID, password=MATRIX_PW)
+rooms = client.get_rooms()
 
-class MatrixWebhookServer(HTTPServer):
+
+async def handler(request):
     """
-    an HTTPServer that embeds a matrix client
-    """
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self.client = MatrixClient(MATRIX_URL)
-        self.client.login(username=MATRIX_ID, password=MATRIX_PW)
-        self.rooms = self.client.get_rooms()
-
-
-class MatrixWebhookHandler(BaseHTTPRequestHandler):
-    """
-    Class given to the server, st. it knows what to do with an HTTP request.
+    Coroutine given to the server, st. it knows what to do with an HTTP request.
     This one handles a POST, checks its content, and forwards it to the matrix room.
     """
+    data = json.loads(request.read().decode())
+    status, ret = 400, 'I need a json dict with text & key'
+    if all(key in data for key in ['text', 'key']):
+        status, ret = 401, 'I need the good "key"'
+        if data['key'] == API_KEY:
+            status, ret = 404, 'I need the id of the room as a path, and to be in this room'
+            if request.rel_url[1:] not in rooms:
+                # try to see if this room has been joined recently
+                rooms = client.get_rooms()
+            if request.rel_url[1:] in rooms:
+                status, ret = 200, json.dumps(rooms[request.rel_url[1:]].send_text(data['text']))
 
-    def do_POST(self):
-        """
-        get a json dict from the request, send a message to a matrix room
-        """
-        length = int(self.headers.get('Content-Length'))
-        data = json.loads(self.rfile.read(length).decode())
-        status, ret = 400, 'I need a json dict with text & key'
-        if all(key in data for key in ['text', 'key']):
-            status, ret = 401, 'I need the good "key"'
-            if data['key'] == API_KEY:
-                status, ret = 404, 'I need the id of the room as a path, and to be in this room'
-                if self.path[1:] not in self.server.rooms:
-                    # try to see if this room has been joined recently
-                    self.server.rooms = self.server.client.get_rooms()
-                if self.path[1:] in self.server.rooms:
-                    status, ret = 200, json.dumps(self.server.rooms[self.path[1:]].send_text(data['text']))
+    return web.Response(text='{"status": %i, "ret": "%a"}' % (status, ret),
+                        content_type='application/json',
+                        status=status)
 
-        self.send_response(status)
-        self.send_header('Content-Type', 'application/json')
-        self.end_headers()
-        self.wfile.write(b'{"status": %i, "ret": "%a"}' % (status, ret))
+
+async def main():
+    server = web.Server(handler)
+    runner = web.ServerRunner(server)
+    await runner.setup()
+    site = web.TCPSite(runner, *SERVER_ADDRESS)
+    await site.start()
+
+    print("======= Serving ======")
+
+    # pause here for very long time by serving HTTP requests and
+    # waiting for keyboard interruption
+    await asyncio.sleep(100 * 3600)
 
 
 if __name__ == '__main__':
-    MatrixWebhookServer(SERVER_ADDRESS, MatrixWebhookHandler).serve_forever()
+    loop = asyncio.get_event_loop()
+
+    try:
+        loop.run_until_complete(main())
+    except KeyboardInterrupt:
+        pass
+    loop.close()