# $GEM_HOME/gems/vlad-1.2.0/lib/vlad/thin.rb
# Thin tasks for Vlad the Deployer
# By cnantais
require 'vlad'

namespace :vlad do
  ##
  # Thin app server

  set :thin_address,       nil
  set :thin_command,       "thin"
  set(:thin_conf)          { "#{shared_path}/thin_cluster.conf" }
  set :thin_environment,   "production"
  set :thin_group,         nil
  set :thin_log_file,      nil
  set :thin_pid_file,      nil
  set :thin_port,          nil
  set :thin_socket,        nil
  set :thin_prefix,        nil
  set :thin_servers,       2
  set :thin_user,          nil
  
  set :thin_uses_bundler,  true

  desc "Prepares application servers for deployment. thin
configuration is set via the thin_* variables.".cleanup

  remote_task :setup_app, :roles => :app do
  
    raise(ArgumentError, "Please provide either thin_socket or thin_port") if thin_port.nil? && thin_socket.nil?
  
    cmd = [
           "config",
           (%(-s "#{thin_servers}") if thin_servers),
           (%(-S "#{thin_socket}") if thin_socket),
           (%(-e "#{thin_environment}") if thin_environment),
           (%(-a "#{thin_address}") if thin_address),
           %(-c "#{current_path}"),
           (%(-C "#{thin_conf}") if thin_conf),
           (%(-P "#{thin_pid_file}") if thin_pid_file),
           (%(-l "#{thin_log_file}") if thin_log_file),
           (%(--user "#{thin_user}") if thin_user),
           (%(--group "#{thin_group}") if thin_group),
           (%(--prefix "#{thin_prefix}") if thin_prefix),
           (%(-p "#{thin_port}") if thin_port),
          ].compact.join ' '

    thin(cmd)
  end

  def thin(cmd) # :nodoc:
    command = if thin_uses_bundler
      %(BUNDLE_GEMFILE="#{current_path}/Gemfile" bundle exec #{thin_command} #{cmd} -C "#{thin_conf}")
    else
      %(#{thin_command} #{cmd} -C "#{thin_conf}")
    end

    %(cd "#{current_path}" && #{command})
  end

  desc "Restart the app servers"

  remote_task :start_app, :roles => :app do
    run thin(%(restart -O -s "#{thin_servers}"))
  end

  desc "Stop the app servers"

  remote_task :stop_app, :roles => :app do
    run thin(%(stop -s "#{thin_servers}"))
  end
end