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@@ -26,4 +26,5 @@ RUN pip3 install -r requirements.txt
 
 EXPOSE 8000
 
-ENTRYPOINT ["python3", "manage.py", "runserver", "0.0.0.0:8000"]
+CMD ["python3", "manage.py", "runserver", "0.0.0.0:8000"]
+#CMD ["daphne", "-b", "0.0.0.0", "-p", "8000", "myproject.asgi:application"]

compose.yaml

@@ -19,15 +19,14 @@ services:
       - .:/usr/src/app/
     ports:
       - 8000:8000
+    depends_on:
       - redis
 
   huey:
     build: .
     restart: "no"
-    entrypoint: huey_consumer.py app.huey -w 4 -k process -f
+    entrypoint: ./manage.py run_huey -f
     volumes:
       - .:/usr/src/app
-    environment:
-      - STORE_URI=redis://redis:6379/0
     depends_on:
       - redis

manage.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myproject.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

myproject/asgi.py

@@ -0,0 +1,31 @@
+"""
+ASGI config for myproject project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/5.1/howto/deployment/asgi/
+"""
+import os
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
+import django
+django.setup()
+
+from django.core.asgi import get_asgi_application
+from channels.security.websocket import AllowedHostsOriginValidator
+from channels.routing import ProtocolTypeRouter, URLRouter
+from django.urls import re_path
+from waiting_room.consumers import MyConsumer
+
+
+application = ProtocolTypeRouter(
+    {
+        # Django's ASGI application to handle traditional HTTP requests
+        "http": get_asgi_application(),
+        # WebSocket handler
+        "websocket": AllowedHostsOriginValidator(
+                URLRouter([re_path(r"^ws/(?P<room_name>[a-zA-Z0-9_]+)/$", MyConsumer.as_asgi())])
+        ),
+    }
+)

myproject/settings.py

@@ -0,0 +1,165 @@
+"""
+Django settings for myproject project.
+
+Generated by 'django-admin startproject' using Django 5.1.2.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/5.1/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/5.1/ref/settings/
+"""
+
+from pathlib import Path
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve().parent.parent
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/5.1/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'django-insecure-ut&)d&0sv4tb17^y1tt$er8m@!9lke7*qs(9&m$mdj8297qmnh'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = ["*"]
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'daphne',
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'waiting_room', # Nuestra aplicación
+    'huey.contrib.djhuey', # Colas de tareas
+    'channels', # Servidor de WebSockets
+]
+
+CHANNEL_LAYERS = {
+    "default": {
+        "BACKEND": "channels_redis.core.RedisChannelLayer",
+        "CONFIG": {
+            "hosts": [("redis", 6379)],
+        },
+    },
+}
+
+HUEY = {
+    'huey_class': 'huey.RedisHuey',
+    'name': 'queue',
+    'results': True,
+    'store_none': False,
+    'immediate': False,
+    'utc': False,
+    'blocking': True,
+    'connection': {
+        'host': 'redis',
+        'port': 6379,
+        'db': 0,
+        'connection_pool': None,
+        'read_timeout': 1,
+        'url': None,
+    },
+    'consumer': {
+        'workers': 4,
+        'worker_type': 'thread',
+        'initial_delay': 0.1,
+        'backoff': 1.15,
+        'max_delay': 10.0,
+        'scheduler_interval': 1,
+        'periodic': True,
+        'check_worker_health': True,
+        'health_check_interval': 1,
+    },
+}
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'myproject.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+ASGI_APPLICATION = 'myproject.asgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/5.1/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'db.sqlite3',
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/5.1/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/5.1/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/5.1/howto/static-files/
+
+STATIC_URL = 'static/'
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/5.1/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

myproject/urls.py

@@ -0,0 +1,22 @@
+"""
+URL configuration for myproject project.
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/5.1/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path
+
+urlpatterns = [
+    path('admin/', admin.site.urls),
+]

requirements.txt

@@ -5,8 +5,8 @@ asgiref==3.8.1
 
 # Django Channels
 channels==4.1.0
+channels_redis==4.2.0
 redis==5.2.0
-asgi_redis==1.4.3
 
 # Task queue
 huey==2.5.2

waiting_room/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

waiting_room/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class WaitingRoomConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'waiting_room'

waiting_room/consumers.py

@@ -0,0 +1,26 @@
+import json
+from channels.generic.websocket import WebsocketConsumer
+from asgiref.sync import async_to_sync
+from waiting_room.tasks import calculate_min_distance
+
+class MyConsumer(WebsocketConsumer):
+
+    def connect(self):
+        self.room_group_name = self.scope["url_route"]["kwargs"]["room_name"]
+        async_to_sync(self.channel_layer.group_add)(self.room_group_name, self.channel_name)
+        self.accept()
+        calculate_min_distance(self.room_group_name)
+
+    def disconnect(self, close_code):
+        async_to_sync(self.channel_layer.group_discard)(self.room_group_name, self.channel_name)
+        self.close()
+
+    def receive(self, text_data):
+        # Echo
+        self.send(text_data=text_data)
+
+    def channel_message(self, event):
+        message = event['message']
+
+        # Send message to WebSocket
+        self.send(text_data=str(message))

waiting_room/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

waiting_room/tasks.py

@@ -0,0 +1,70 @@
+from huey.contrib.djhuey import task
+import operator
+from itertools import permutations
+from collections import Counter
+from functools import reduce
+from math import factorial
+from channels.layers import get_channel_layer
+from asgiref.sync import async_to_sync
+
+def render_progress_bar(group_name, message):
+    channel_layer = get_channel_layer()
+    async_to_sync(channel_layer.group_send)(
+        group_name,
+        {
+            'type': 'channel_message',
+            'message': message
+        }
+    )
+
+@task()
+def calculate_min_distance(group_name):
+    # Distance matrix between cities
+    distances = [
+        [0, 29, 20, 21, 16, 31, 100, 12, 5, 78],
+        [29, 0, 15, 29, 28, 40, 72, 21, 29, 41],
+        [20, 15, 0, 15, 14, 25, 81, 9, 23, 27],
+        [21, 29, 15, 0, 4, 12, 92, 12, 25, 13],
+        [16, 28, 14, 4, 0, 16, 94, 9, 20, 16],
+        [31, 40, 25, 12, 16, 0, 95, 24, 36, 3],
+        [100, 72, 81, 92, 94, 95, 0, 90, 101, 99],
+        [12, 21, 9, 12, 9, 24, 90, 0, 15, 25],
+        [5, 29, 23, 25, 20, 36, 101, 15, 0, 35],
+        [78, 41, 27, 13, 16, 3, 99, 25, 35, 0],
+    ]
+
+    num_cities = len(distances)
+    cities = list(range(num_cities))
+
+    def count_permutations(sequence):
+        total = factorial(len(sequence))
+        duplicates = Counter(sequence).values()
+        divisor = reduce(operator.mul, (factorial(v) for v in duplicates), 1)
+        return total / divisor
+
+    def calculate_shortest_route(distances):
+        shortest_route = float("inf")
+        city_count = 0
+
+        # Calculate all possible permutations of cities (routes)
+        total_permutations = count_permutations(cities)
+
+        percentaje = 0
+        for perm in permutations(cities):
+            # Send progress to the group
+            temp_percentaje = int(city_count / total_permutations * 100)
+            if temp_percentaje != percentaje:
+                percentaje = temp_percentaje
+                render_progress_bar(group_name, percentaje)
+            city_count += 1
+            # Calculate the distance of the route
+            route_distance = 0
+            for i in range(num_cities - 1):
+                route_distance += distances[perm[i]][perm[i + 1]]
+            route_distance += distances[perm[-1]][perm[0]]  # Back to the start city
+            shortest_route = min(shortest_route, route_distance)
+
+        render_progress_bar(group_name, 100)
+        return shortest_route
+
+    return calculate_shortest_route(distances)

waiting_room/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

waiting_room/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.