unicorn.rb

require "redis"

root = "/home/deployer/apps/qs/current"
working_directory root
pid "#{root}/tmp/pids/unicorn.pid"
stderr_path "#{root}/log/unicorn.log"
stdout_path "#{root}/log/unicorn.log"

listen "/tmp/unicorn.qs.sock"
worker_processes 7
timeout 30

preload_app true

# TODO: Remove when doen with this.
ENV.each{ |k, v| puts "#{k}:::#{v}" }

before_exec do |_|
  ENV["RUBY_HEAP_MIN_SLOTS"]           = 500000
  ENV["RUBY_GC_MALLOC_LIMIT"]          = 50000000
  ENV["RUBY_HEAP_SLOTS_INCREMENT"]     = 250000
  ENV["RUBY_HEAP_SLOTS_GROWTH_FACTOR"] = 1
  ENV["RUBY_HEAP_FREE_MIN"]            = 100000
  ENV["BUNDLE_GEMFILE"]                = '/home/deployer/apps/qs/current/Gemfile'
end

before_fork do |server, worker|
  # Disconnect since the database connection will not carry over
  if defined? ActiveRecord::Base
    ActiveRecord::Base.connection.disconnect!
  end

  # Quit the old unicorn process
  old_pid = "#{server.config[:pid]}.oldbin"
  if File.exists?(old_pid) && server.pid != old_pid
    begin
      Process.kill("QUIT", File.read(old_pid).to_i)
    rescue Errno::ENOENT, Errno::ESRCH
    end
  end
end

after_fork do |server, worker|
  # Start up the database connection again in the worker
  if defined?(ActiveRecord::Base)
    ActiveRecord::Base.establish_connection
  end

  Redis.current.quit
  Rails.cache.reconnect
end