Fix bug 1407532: Fix "Deploy to Heroku" button (#735)

* Update version of buildpack for git submodules
* Add SITE_URL setting to app.json and mark as required
* Remove code responsible for automatic discovery of SITE_URL after a
  deploy on Heroku
* Add runtime.txt and set python2 as the default for python buildpack

app.json

@@ -4,7 +4,7 @@
    "keywords": ["l10n", "localization", "mozilla", "collaboration", "python", "django"],
    "website": "https://pontoon.mozilla.org",
    "logo": "https://pontoon.mozilla.org/static/img/logo.svg",
-   "success_url": "/heroku-setup/",
+   "success_url": "/",
    "image": "heroku/python",
    "addons": [
      {
@@ -32,6 +32,10 @@
      }
    ],
    "env": {
+     "SITE_URL": {
+       "description": "Base URL of the site. Has to be https://{app-name}.herokuapp.com.",
+       "required": true
+     },
      "ADMIN_EMAIL": {
        "value": "pontoon@example.com",
        "description": "Email address for the ``ADMINS`` setting."
@@ -109,7 +113,7 @@
    },
    "buildpacks": [
      {
-       "url": "https://github.com/dmathieu/heroku-buildpack-submodules#b37ffe4361bb9c975dd8e93068c9d296365d748c"
+       "url": "https://github.com/dmathieu/heroku-buildpack-submodules#0caf30af7737bf1bc32b7aafc009f19af3e603c1"
      },
      {
        "url": "https://github.com/Osmose/heroku-buildpack-ssh"
@@ -125,7 +129,7 @@
      }
    ],
    "scripts": {
-    "postdeploy": "./bin/heroku_postdeploy"
+     "postdeploy": "./bin/heroku_postdeploy && ./manage.py heroku_deploy_setup"
    },
    "formation": {
      "worker": {

bin/heroku_postdeploy

@@ -13,7 +13,7 @@ MEMCACHE_SERVER=$(echo $MEMCACHE_SERVERS | cut -f1 -d:)
 MEMCACHE_PORT=$(echo $MEMCACHE_SERVERS | cut -f2 -d:)
 
 # Sometimes Memcache server isn't available immediately.
-# Synchronization of project will fail if memcached isn't accessible.
+# project_sync will fail if memcached isn't accessible.
 while ! nc -z -w5 $MEMCACHE_SERVER $MEMCACHE_PORT; do
     echo Waiting for memcached at $MEMCACHE_SERVER:$MEMCACHE_PORT
     sleep 0.1

pontoon/base/management/commands/heroku_deploy_setup.py

@@ -0,0 +1,25 @@
+import os
+
+from urlparse import urlparse, urljoin
+
+from django.core.management.base import BaseCommand
+from django.contrib.sites.models import Site
+
+from pontoon.base.models import Project, User
+
+
+class Command(BaseCommand):
+    help = 'Setup an instance of Pontoon deployed via Heroku Deploy.'
+
+    def handle(self, *args, **options):
+        site_url = os.environ.get('SITE_URL')
+        app_host = urlparse(site_url).netloc
+        admin_email = os.environ.get('ADMIN_EMAIL')
+        admin_password = os.environ.get('ADMIN_PASSWORD')
+
+        User.objects.create_superuser(admin_email, admin_email, admin_password)
+        Site.objects.filter(pk=1).update(name=app_host, domain=app_host)
+
+        Project.objects.filter(slug='pontoon-intro').update(
+            url=urljoin(site_url, 'intro/')
+        )

pontoon/base/middleware.py

@@ -1,28 +1,10 @@
 from django.conf import settings
 from django.contrib import auth
-from django.contrib.sites.models import Site
-from django.shortcuts import redirect
 from django.core.exceptions import PermissionDenied
 from django.http import Http404, HttpResponseForbidden
 from raygun4py.middleware.django import Provider
 
 
-class HerokuDemoSetupMiddleware(object):
-    """
-    Forces user to setup demo instance during the initial state.
-    There's a chance that user will try to open newly created instance by
-    typing an url in the browser window. That's why we have to ensure
-    that setup view is called as the first view.
-    """
-
-    def process_request(self, request):
-        path = request.path
-        current_domain = Site.objects.get(pk=1).domain
-
-        if settings.HEROKU_DEMO and path != '/heroku-setup/' and current_domain == 'example.com':
-            return redirect('pontoon.heroku_setup')
-
-
 class RaygunExceptionMiddleware(Provider):
     def process_exception(self, request, exception):
         # Ignore non-failure exceptions. We don't need to be notified

pontoon/base/views.py

@@ -1,15 +1,11 @@
 import logging
-import os
 
 from bulk_update.helper import bulk_update
 from datetime import datetime
 
-from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.contrib.auth.models import User
-from django.contrib.sites.models import Site
-from django.core.cache import cache
 from django.core.paginator import Paginator, EmptyPage
 from django.db import transaction
 from django.db.models import Q
@@ -75,34 +71,6 @@ def home(request):
     return translate(request, locale, project.slug, path)
 
 
-def heroku_setup(request):
-    """
-    Heroku doesn't allow us to set SITE_URL or Site during the build phase of an app.
-    Because of that we have to set everything up after build is done and app is
-    able to retrieve a domain.
-    """
-    app_host = request.get_host()
-    homepage_url = 'https://{}/'.format(app_host)
-    site_domain = Site.objects.get(pk=1).domain
-
-    if not os.environ.get('HEROKU_DEMO') or site_domain != 'example.com':
-        return redirect(homepage_url)
-
-    admin_email = os.environ.get('ADMIN_EMAIL')
-    admin_password = os.environ.get('ADMIN_PASSWORD')
-
-    User.objects.create_superuser(admin_email, admin_email, admin_password)
-    Site.objects.filter(pk=1).update(name=app_host, domain=app_host)
-
-    Project.objects.filter(slug='pontoon-intro').update(
-        url='https://{}/intro/'.format(app_host)
-    )
-
-    # Clear the cache to ensure that SITE_URL will be regenerated.
-    cache.delete(settings.APP_URL_KEY)
-    return redirect(homepage_url)
-
-
 # TRANSLATE VIEWs
 
 

pontoon/settings/base.py

@@ -64,25 +64,7 @@ SESSION_COOKIE_SECURE = os.environ.get('SESSION_COOKIE_SECURE', 'True') != 'Fals
 
 APP_URL_KEY = 'APP_URL'
 
-# For the sake of integration with Heroku, we dynamically load domain name
-# From the file that's set right after the build phase.
-if os.environ.get('HEROKU_DEMO') and not os.environ.get('SITE_URL'):
-    def _site_url():
-        from django.contrib.sites.models import Site
-        from django.core.cache import cache
-
-        app_url = cache.get(APP_URL_KEY)
-
-        # Sometimes data from cache is flushed, We can't do anything about that.
-        if not app_url:
-            app_url = "https://{}".format(Site.objects.get(pk=1).domain)
-            cache.set(APP_URL_KEY, app_url)
-
-        return app_url
-
-    SITE_URL = lazy(_site_url, str)()
-else:
-    SITE_URL = os.environ.get('SITE_URL', 'http://localhost:8000')
+SITE_URL = os.environ.get('SITE_URL', 'http://localhost:8000')
 
 # Custom LD_LIBRARY_PATH environment variable for SVN
 SVN_LD_LIBRARY_PATH = os.environ.get('SVN_LD_LIBRARY_PATH', '')
@@ -165,7 +147,6 @@ MIDDLEWARE_CLASSES = (
     'sslify.middleware.SSLifyMiddleware',
     'pontoon.base.middleware.RaygunExceptionMiddleware',
     'pontoon.base.middleware.BlockedIpMiddleware',
-    'pontoon.base.middleware.HerokuDemoSetupMiddleware',
     'corsheaders.middleware.CorsMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',

pontoon/urls.py

@@ -3,7 +3,6 @@ from django.contrib import admin
 from django.contrib.auth.views import logout
 from django.views.generic import RedirectView, TemplateView
 
-from pontoon.base.views import heroku_setup
 from pontoon.intro.views import intro
 from pontoon.teams.views import team
 
@@ -83,12 +82,6 @@ urlpatterns = [
     url(r'^404/$', TemplateView.as_view(template_name='404.html')),
     url(r'^500/$', TemplateView.as_view(template_name='500.html')),
 
-    # Urls related to integration with Heroku
-    url(
-        r'^heroku-setup/', heroku_setup,
-        name='pontoon.heroku_setup'
-    ),
-
     # Robots.txt
     url(
         r'^robots.txt$',

runtime.txt

@@ -0,0 +1 @@
+python-2.7.14