From 71dfbd93f4f1bc4ae443c66bb10fe85a36781367 Mon Sep 17 00:00:00 2001
From: Georg Hopp <georg@steffers.org>
Date: Tue, 5 Apr 2016 05:33:43 +0200
Subject: [PATCH] Bundle unicorn for production deployments.

---
 Gemfile           |  2 +-
 Gemfile.lock      |  7 +++++++
 config/unicorn.rb | 24 ++++++++++++++++++++++++
 run_unicorn.md    | 23 +++++++++++++++++++++++
 4 files changed, 55 insertions(+), 1 deletion(-)
 create mode 100644 config/unicorn.rb
 create mode 100644 run_unicorn.md

diff --git a/Gemfile b/Gemfile
index bb983b0..04208a2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,7 +30,7 @@ gem 'sdoc', '~> 0.4.0', group: :doc
 # gem 'bcrypt', '~> 3.1.7'
 
 # Use Unicorn as the app server
-# gem 'unicorn'
+gem 'unicorn'
 
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
diff --git a/Gemfile.lock b/Gemfile.lock
index b2a7569..c878053 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,6 +60,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.3)
+    kgio (2.10.0)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
@@ -97,6 +98,7 @@ GEM
       activesupport (= 4.2.6)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
+    raindrops (0.16.0)
     rake (11.1.2)
     rdoc (4.2.2)
       json (~> 1.4)
@@ -123,6 +125,10 @@ GEM
       thread_safe (~> 0.1)
     uglifier (3.0.0)
       execjs (>= 0.3.0, < 3)
+    unicorn (5.0.1)
+      kgio (~> 2.6)
+      rack
+      raindrops (~> 0.7)
     web-console (2.3.0)
       activemodel (>= 4.0)
       binding_of_caller (>= 0.7.2)
@@ -147,6 +153,7 @@ DEPENDENCIES
   tilt (~> 2.0)
   turbolinks
   uglifier (>= 1.3.0)
+  unicorn
   web-console (~> 2.0)
 
 BUNDLED WITH
diff --git a/config/unicorn.rb b/config/unicorn.rb
new file mode 100644
index 0000000..25c6a37
--- /dev/null
+++ b/config/unicorn.rb
@@ -0,0 +1,24 @@
+# config/unicorn.rb
+worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
+timeout 15
+preload_app true
+
+before_fork do |server, worker|
+	Signal.trap 'TERM' do
+		puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
+		Process.kill 'QUIT', Process.pid
+	end
+
+	defined?(ActiveRecord::Base) and
+		ActiveRecord::Base.connection.disconnect!
+end
+
+after_fork do |server, worker|
+	Signal.trap 'TERM' do
+		puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
+	end
+
+	defined?(ActiveRecord::Base) and
+		ActiveRecord::Base.establish_connection
+end
+# vim: set ts=2 sw=2:
diff --git a/run_unicorn.md b/run_unicorn.md
new file mode 100644
index 0000000..1650fa6
--- /dev/null
+++ b/run_unicorn.md
@@ -0,0 +1,23 @@
+# Some notes about unicorn
+
+First off, it only servers the rails application, not the static assets.
+You need to have another webserver for this.
+
+## SECRET_KEY
+
+By default rails reads the secret key from the environment variable
+`SECRET_KEY_BASE`. It is possible to create a key with `rake secret`
+
+## Start unicorn
+
+	SECRET_KEY_BASE="fa27f9d1cdfeb8590377366cb89c973b6084a20b60a4e60b551563cb1119156a0f172212f54fc096e182bf5310b6ca8cb050814c5908c8523cb191d1a054ca29" bundle exec unicorn -c config/unicorn.rb -E production
+
+## Precompile assets
+
+	RAILS_ENV=production bundle exec rake assets:precompile
+
+## Urls
+
+ * [heroku:Deploying Rails Applications with Unicorn](https://devcenter.heroku.com/articles/rails-unicorn)
+ * [DigitalOcean:How To Deploy a Rails App with Unicorn and Nginx on Ubuntu 14.04](https://www.digitalocean.com/community/tutorials/how-to-deploy-a-rails-app-with-unicorn-and-nginx-on-ubuntu-14-04)
+