From 7716a416e970afcfdb163ed53d5b514d7401832f Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <fabio@manganiello.tech>
Date: Tue, 9 May 2023 02:18:58 +0200
Subject: [PATCH] [#260] Support for sending events via websocket over
 `/ws/events`.

---
 platypush/backend/http/app/utils/bus.py |  5 +++--
 platypush/backend/http/app/ws/_base.py  |  2 +-
 platypush/backend/http/app/ws/events.py | 15 ++++++++++++++-
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/platypush/backend/http/app/utils/bus.py b/platypush/backend/http/app/utils/bus.py
index 5834a46d80..54556cede2 100644
--- a/platypush/backend/http/app/utils/bus.py
+++ b/platypush/backend/http/app/utils/bus.py
@@ -1,8 +1,8 @@
-from flask import current_app
 from redis import Redis
 
 from platypush.bus.redis import RedisBus
 from platypush.config import Config
+from platypush.context import get_backend
 from platypush.message import Message
 from platypush.message.request import Request
 from platypush.utils import get_redis_queue_name_by_message
@@ -15,7 +15,8 @@ _bus = None
 def bus():
     global _bus
     if _bus is None:
-        _bus = RedisBus(redis_queue=current_app.config.get('redis_queue'))
+        redis_queue = get_backend('http').bus.redis_queue  # type: ignore
+        _bus = RedisBus(redis_queue=redis_queue)
     return _bus
 
 
diff --git a/platypush/backend/http/app/ws/_base.py b/platypush/backend/http/app/ws/_base.py
index d1596940e1..47e4498852 100644
--- a/platypush/backend/http/app/ws/_base.py
+++ b/platypush/backend/http/app/ws/_base.py
@@ -51,7 +51,7 @@ class WSRoute(WebSocketHandler, Thread, ABC):
         pass
 
     @override
-    def on_message(self, *_, **__):
+    def on_message(self, message):  # type: ignore
         pass
 
     @abstractclassmethod
diff --git a/platypush/backend/http/app/ws/events.py b/platypush/backend/http/app/ws/events.py
index 42cd75b084..e96833aad3 100644
--- a/platypush/backend/http/app/ws/events.py
+++ b/platypush/backend/http/app/ws/events.py
@@ -3,6 +3,7 @@ from typing_extensions import override
 from platypush.message.event import Event
 
 from . import WSRoute, logger, pubsub_redis_topic
+from ..utils import send_message
 
 events_redis_topic = pubsub_redis_topic('events')
 
@@ -21,11 +22,23 @@ class WSEventProxy(WSRoute):
     def app_name(cls) -> str:
         return 'events'
 
+    @override
+    def on_message(self, message):
+        try:
+            event = Event.build(message)
+            assert isinstance(event, Event), f'Expected {Event}, got {type(event)}'
+        except Exception as e:
+            logger.info('Could not build event from %s: %s', message, e)
+            logger.exception(e)
+            return
+
+        send_message(event, wait_for_response=False)
+
     @override
     def run(self) -> None:
         for msg in self.listen():
             try:
-                evt = Event.build(msg.decode())
+                evt = Event.build(msg)
             except Exception as e:
                 logger.warning('Error parsing event: %s: %s', msg, e)
                 continue