🚀(paas) add PaaS deployment scripts, tested on Scalingo

add PaaS deployment scripts, tested on Scalingo

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to
 ### Added
 
 - ✨(backend) monitor throttling rate failure through sentry #964
+- 🚀(paas) add PaaS deployment scripts, tested on Scalingo #957
 
 ### Changed
 

Procfile

@@ -0,0 +1,2 @@
+web: bin/buildpack_start.sh
+postdeploy: python manage.py migrate

bin/buildpack_postcompile.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -o errexit    # always exit on error
+set -o pipefail   # don't ignore exit codes when piping output
+
+echo "-----> Running post-compile script"
+
+# Cleanup
+rm -rf docker docs env.d gitlint

bin/buildpack_postfrontend.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -o errexit    # always exit on error
+set -o pipefail   # don't ignore exit codes when piping output
+
+echo "-----> Running post-frontend script"
+
+# Move the frontend build to the nginx root and clean up
+mkdir -p build/
+mv src/frontend/dist build/frontend-out
+
+mv src/backend/* ./
+mv deploy/paas/* ./
+
+echo "3.13" > .python-version
+echo "." > requirements.txt

bin/buildpack_start.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Start the Django backend server
+gunicorn -b 0.0.0.0:8000 meet.wsgi:application --log-file - &
+
+# Start the Nginx server
+bin/run &
+
+# if the current shell is killed, also terminate all its children     
+trap "pkill SIGTERM -P $$" SIGTERM
+
+# wait for a single child to finish,
+wait -n
+# then kill all the other tasks
+pkill -P $$

deploy/paas/servers.conf.erb

@@ -0,0 +1,52 @@
+# ERB templated nginx configuration
+# see https://doc.scalingo.com/platform/deployment/buildpacks/nginx
+
+upstream backend_server {
+	server localhost:8000 fail_timeout=0;
+}
+
+server {
+  listen <%= ENV["PORT"] %>;
+  server_name _;
+  server_tokens off;
+
+  root /app/build/frontend-out;
+
+  # Django rest framework
+  location ^~ /api/ {
+      proxy_set_header X-Forwarded-Proto https;
+      proxy_set_header Host $http_host;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+      proxy_redirect off;
+      proxy_pass http://backend_server;
+  }
+
+  # Django admin
+  location ^~ /admin/ {
+      proxy_set_header X-Forwarded-Proto https;
+      proxy_set_header Host $http_host;
+      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+      proxy_redirect off;
+      proxy_pass http://backend_server;
+  }
+
+  # Serve static files with caching
+  location ~* ^/assets/.*\.(css|js|json|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+      expires 30d;
+      add_header Cache-Control "public, max-age=2592000";
+  }
+
+  # Serve static files
+  location / {
+      try_files $uri $uri/ /index.html;
+      # Add no-cache headers
+      add_header Cache-Control "no-cache, no-store, must-revalidate";
+      add_header Pragma "no-cache";  # HTTP 1.0 header for backward compatibility
+      add_header Expires 0;
+  }
+
+  # Optionally, handle 404 errors by redirecting to index.html
+  error_page 404 =200 /index.html;
+}

src/backend/meet/settings.py

@@ -13,11 +13,12 @@ https://docs.djangoproject.com/en/3.1/ref/settings/
 # pylint: disable=too-many-lines
 
 import json
-from os import path
+from os import environ, path
 from socket import gethostbyname, gethostname
 
 from django.utils.translation import gettext_lazy as _
 
+import dj_database_url
 import sentry_sdk
 from configurations import Configuration, values
 from lasuite.configuration.values import SecretFileValue
@@ -92,7 +93,9 @@ class Base(Configuration):
 
     # Database
     DATABASES = {
-        "default": {
+        "default": dj_database_url.config()
+        if environ.get("DATABASE_URL")
+        else {
             "ENGINE": values.Value(
                 "django.db.backends.postgresql_psycopg2",
                 environ_name="DB_ENGINE",

src/backend/pyproject.toml

@@ -29,6 +29,7 @@ dependencies = [
     "Brotli==1.2.0",
     "brevo-python==1.2.0",
     "celery[redis]==5.5.3",
+    "dj-database-url==3.1.0",
     "django-configurations==2.5.1",
     "django-cors-headers==4.9.0",
     "django-countries==8.0.0",