Reverted messy attempt at switch to Puma as app server.

Capfile

@@ -5,21 +5,16 @@ require 'capistrano/setup'
 require 'capistrano/deploy'
 require 'capistrano/rbenv'
 require 'capistrano/bundler'
-require 'capistrano/puma'
 require 'capistrano/rails/assets'
 require 'capistrano/rails/migrations'
 
 namespace :deploy do
   desc 'Start application'
-  task(:start) {
+  task(:start) {}
-    invoke 'puma:start'
-  }
 
   desc 'Stop application'
-  task(:stop) {
+  task(:stop) {}
-    invoke 'puma:stop'
-  }
 end
 
 # Load custom tasks from `lib/capistrano/tasks' if you have any defined
-Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }
+Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }

Gemfile

@@ -31,10 +31,9 @@ group :development do
   gem 'binding_of_caller'
   gem 'rails-erd'
   # deploy with capistrano
-  gem 'capistrano-rails'
+  gem 'capistrano-rails', '~> 1.1.2'
-  gem 'capistrano-rbenv'
+  gem 'capistrano-rbenv', '~> 2.0'
-  gem 'capistrano-bundler'
+  gem 'capistrano-bundler', '~> 1.1.3'
-  gem 'capistrano-puma'
   # windows timezone foo
   gem 'tzinfo-data', platforms: [:mingw, :mswin]
 end
@@ -44,6 +43,6 @@ group :test do
 end
 
 group :production do
-  # Use puma as the app server
+  # Use unicorn as the app server
-  gem 'puma'
+  gem 'unicorn'
 end

Gemfile.lock

@@ -115,8 +115,6 @@ GEM
     capistrano-bundler (1.1.4)
       capistrano (~> 3.1)
       sshkit (~> 1.2)
-    capistrano-puma (0.2.3)
-      capistrano (>= 3.0)
     capistrano-rails (1.1.8)
       capistrano (~> 3.1)
       capistrano-bundler (~> 1.1)
@@ -158,6 +156,7 @@ GEM
       coffee-rails (>= 3.2.0)
       railties (>= 3.2.0)
       sass-rails (>= 3.2.0)
+    kgio (2.11.2)
     loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -179,7 +178,6 @@ GEM
       mini_portile2 (~> 2.3.0)
     nokogumbo (1.5.0)
       nokogiri
-    puma (3.11.4)
     rack (1.6.9)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -196,6 +194,7 @@ GEM
       ruby-graphviz (~> 1.2)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
+    raindrops (0.19.0)
     rake (12.3.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
@@ -245,6 +244,9 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.5)
+    unicorn (5.4.0)
+      kgio (~> 2.6)
+      raindrops (~> 0.7)
     webrick (1.4.2)
 
 PLATFORMS
@@ -256,10 +258,9 @@ DEPENDENCIES
   bcrypt
   better_errors
   binding_of_caller
-  capistrano-bundler
+  capistrano-bundler (~> 1.1.3)
-  capistrano-puma
+  capistrano-rails (~> 1.1.2)
-  capistrano-rails
+  capistrano-rbenv (~> 2.0)
-  capistrano-rbenv
   highlight_js-rails!
   hirb
   jquery-rails
@@ -267,7 +268,6 @@ DEPENDENCIES
   kaminari!
   mail-gpg!
   mysql2
-  puma
   rails!
   rails-erd
   rb-readline
@@ -279,6 +279,7 @@ DEPENDENCIES
   strip_attributes
   tzinfo-data
   uglifier
+  unicorn
   webrick
 
 BUNDLED WITH

config/puma.rb

@@ -1,23 +0,0 @@
-workers 2
-
-threads 2, 4
-
-app_dir = File.expand_path("../..", __FILE__)
-shared_dir = "#{app_dir}/shared"
-
-rails_env = ENV['RAILS_ENV'] || "production"
-environment rails_env
-
-bind "localhost:8080"
-
-stdout_redirect "#{shared_dir}/log/puma.stdout.log", "#{shared_dir}/log/puma.stderr.log", true
-
-pidfile "#{shared_dir}/pids/puma.pid"
-state_path "#{shared_dir}/pids/puma.state"
-activate_control_app
-
-on_worker_boot do
-  require "active_record"
-  ActiveRecord::Base.connection.disconnect! rescue ActiveRecord::ConnectionNotEstablished
-  ActiveRecord::Base.establish_connection(YAML.load_file("#{app_dir}/config/database.yml")[rails_env])
-end

lib/capistrano/tasks/unicorn.rake

@@ -0,0 +1,40 @@
+namespace :deploy do
+  after :start, :start_unicorn do
+    invoke 'unicorn:start'
+  end
+
+  after :stop, :stop_unicorn do
+    invoke 'unicorn:stop'
+  end
+
+  after :restart, :restart_unicorn do
+    begin
+      invoke "unicorn:restart"
+    rescue SSHKit::Runner::ExecuteError
+      invoke "unicorn:start"
+    end
+  end
+end
+
+namespace :unicorn do
+  desc "Start Unicorn"
+  task :start do
+    on roles(:web) do
+      execute :sudo, :start, "unicorn"
+    end
+  end
+
+  desc "Stop Unicorn"
+  task :stop do
+    on roles(:web) do
+      execute :sudo, :stop, "unicorn"
+    end
+  end
+
+  desc "Restart Unicorn"
+  task :restart do
+    on roles(:web), in: :sequence, wait: 5 do
+      execute :sudo, :restart, "unicorn"
+    end
+  end
+end