✨(buildpack) add PaaS deployment support, tested with Scalingo

Procfile

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

bin/buildpack_postcompile.sh

@@ -0,0 +1,15 @@
+#!/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"
+
+rm -rf docker docs env.d gitlint src/frontend/apps/e2e
+rm -rf src/frontend/apps
+rm -rf src/frontend/packages
+
+# Remove some of the larger packages required by the frontend only
+rm -rf src/frontend/node_modules/@next src/frontend/node_modules/next src/frontend/node_modules/react-icons src/frontend/node_modules/@gouvfr-lasuite 
+
+# du -ch | sort -rh | head -n 100

bin/buildpack_postfrontend.sh

@@ -0,0 +1,15 @@
+#!/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/apps/impress/out build/frontend-out
+
+mv src/backend/* ./
+mv src/nginx/* ./
+
+echo "3.13" > .python-version

bin/buildpack_start.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Start the Django backend server
+gunicorn -b :8000 impress.wsgi:application --log-file - &
+
+# Start the Y provider service
+cd src/frontend/servers/y-provider && PORT=4444 ../../.scalingo/node/bin/node dist/start-server.js &
+
+# Start the Nginx server
+bin/run &
+
+# if the current shell is killed, also terminate all its children     
+trap "pkill SIGTERM -P $$" SIGTERM                            
+
+# wait for a single child to finish,                               
+wait -n                                                  
+# then kill all the other tasks                          
+pkill -P $$

src/backend/impress/settings.py

@@ -16,6 +16,7 @@
 
 from django.utils.translation import gettext_lazy as _
 
+import dj_database_url
 import sentry_sdk
 from configurations import Configuration, values
 from sentry_sdk.integrations.django import DjangoIntegration
@@ -74,7 +75,9 @@ class Base(Configuration):
 
     # Database
     DATABASES = {
-        "default": {
+        "default": dj_database_url.config()
+        if os.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 = [
     "boto3==1.38.18",
     "Brotli==1.1.0",
     "celery[redis]==5.5.2",
+    "dj-database-url==2.3.0",
     "django-configurations==2.5.1",
     "django-cors-headers==4.7.0",
     "django-countries==7.6.1",

src/frontend/package.json

@@ -19,6 +19,7 @@
     "app:build": "yarn APP_IMPRESS run build",
     "app:test": "yarn APP_IMPRESS run test",
     "ci:build": "yarn APP_IMPRESS run build:ci",
+    "build": "yarn APP_IMPRESS run build && yarn COLLABORATION_SERVER run build",
     "e2e:test": "yarn APP_E2E run test",
     "lint": "yarn APP_IMPRESS run lint && yarn APP_E2E run lint && yarn workspace eslint-config-impress run lint && yarn I18N run lint && yarn COLLABORATION_SERVER run lint",
     "i18n:extract": "yarn I18N run extract-translation",

src/nginx/servers.conf.erb

@@ -0,0 +1,114 @@
+# ERB templated nginx configuration
+# see https://doc.scalingo.com/platform/deployment/buildpacks/nginx
+
+upstream backend_server {
+	server localhost:8000 fail_timeout=0;
+}
+
+upstream collaboration_server {
+	server localhost:4444 fail_timeout=0;
+}
+
+server {
+
+	listen <%= ENV["PORT"] %>;
+	server_name _;
+
+    root /app/build/frontend-out;
+
+    error_page 404 /404.html;
+
+    location /collaboration/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://collaboration_server;
+    }
+
+    location /collaboration/ws/ {
+
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "Upgrade";
+
+        # Set appropriate timeout for WebSocketAdd commentMore actions
+        proxy_read_timeout 86400;
+        proxy_send_timeout 86400;
+
+        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://collaboration_server;
+    }
+
+    # 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;
+	}
+
+    # Proxy auth for media
+    location /media/ {
+        # Auth request configuration
+        auth_request /media-auth;
+        auth_request_set $authHeader $upstream_http_authorization;
+        auth_request_set $authDate $upstream_http_x_amz_date;
+        auth_request_set $authContentSha256 $upstream_http_x_amz_content_sha256;
+
+        # Pass specific headers from the auth response
+        proxy_set_header Authorization $authHeader;
+        proxy_set_header X-Amz-Date $authDate;
+        proxy_set_header X-Amz-Content-SHA256 $authContentSha256;
+
+        # Get resource from Object Storage
+        proxy_pass <%= ENV["AWS_S3_ENDPOINT_URL"] %>/<%= ENV["AWS_STORAGE_BUCKET_NAME"] %>/;
+        proxy_set_header Host <%= ENV["AWS_S3_ENDPOINT_URL"].split("://")[1] %>;
+
+        add_header Content-Security-Policy "default-src 'none'" always;
+    }
+
+    location /media-auth {
+        proxy_pass http://backend_server/api/v1.0/documents/media-auth/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Original-URL $request_uri;
+
+        # Prevent the body from being passed
+        proxy_pass_request_body off;
+        proxy_set_header Content-Length "";
+        proxy_set_header X-Original-Method $request_method;
+    }
+
+
+    location / {
+        try_files $uri index.html $uri/ =404;
+    }
+
+    location ~ "^/docs/[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}/?$" {
+        try_files $uri /docs/[id]/index.html;
+    }
+
+    location = /404.html {
+        internal;
+    }
+
+}