Replace webrick by puma

Author: MatheusFerraz

CHANGELOG.rdoc

@@ -4,6 +4,8 @@ KalibroProcessor is the processing web service for Mezuro.
 
 == Unreleased
 
+- Replace webrick by puma
+
 == v.1.3.3 - 29/07/2016
 
 * Insert in one query all aggregated MetricResults

Gemfile

@@ -109,7 +109,8 @@ group :cucumber do
   # gem 'database_cleaner' # Removed because it is getting added above.
 end
 
-
+# Use puma as the app server
+gem 'puma'
 
 # Use ActiveModel has_secure_password
 # gem 'bcrypt-ruby', '~> 3.0.0'

Gemfile.lock

@@ -266,6 +266,7 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     psych (2.0.15)
+    puma (3.6.0)
     rack (1.6.4)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -415,6 +416,7 @@ DEPENDENCIES
   mocha
   pg
   psych (~> 2.0.12)
+  puma
   rails (= 4.2.4)
   rails-html-sanitizer (~> 1.0)
   rspec-rails (~> 3.3.2)
@@ -427,4 +429,4 @@ DEPENDENCIES
   unparser (< 0.2.5)
 
 BUNDLED WITH
-   1.12.5
+   1.13.3

Procfile

@@ -1,2 +1,2 @@
-web: bundle exec rails s -p $PORT -e $RAILS_ENV
+web: bundle exec puma -C config/puma.rb
 jobs: bundle exec rake jobs:work

config/puma.rb

@@ -0,0 +1,15 @@
+workers Integer(ENV['WEB_CONCURRENCY'] || 2)
+ threads_count = Integer(ENV['RAILS_MAX_THREADS'] || 5)
+ threads threads_count, threads_count
+ 
+ preload_app!
+ 
+ rackup      DefaultRackup
+ port        ENV['PORT']     || 8082
+ environment ENV['RACK_ENV'] || 'development'
+ 
+ on_worker_boot do
+   # Worker specific setup for Rails 4.1
+   # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot
+   ActiveRecord::Base.establish_connection
+ end