Module: AppDeploy::RackCluster

Defined in:
lib/app-deploy/rack_cluster.rb

Class Method Summary collapse

Class Method Details

.each(path) ⇒ Object 



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# File 'lib/app-deploy/rack_cluster.rb', line 6

def each path
  config_orig = {}
  rack_opts = AppDeploy.extract_config(path){ |opt, value|
    case opt
      when 'environment'
        "--env #{value}"

      when *%w[server host]
        config_orig[opt.to_sym] = value
        "--#{opt} #{value}"

      when *%w[user group chdir servers require rackup daemonize port pid log delay]
        config_orig[opt.to_sym] = value
        nil # rack doesn't have this option

      else
        "--#{opt} #{value}"

    end
  }

  config_orig = { :servers => 1,
                  :port    => 9292,
                  :host    => '0.0.0.0',
                  :log     => 'log/rack_cluster.log',
                  :pid     => 'tmp/pids/rack_cluster.pid',
                  :server  => 'mongrel',
                  :rackup  => 'config.ru' }.merge(config_orig)

  config_orig[:servers].times{ |n|
    config = config_orig.dup

    config[:port] += n
    config[:pid] = RackCluster.pid_path(config[:pid], config[:port])
    config[:log] = RackCluster.log_path(config[:log], config[:port])

    args = [:pid, :log, :user, :group, :chdir].map{ |kind|
      value = config.send(:[], kind)
      value ? "'#{value}'" : 'nil'
    }.join(', ')

    init_script = "AppDeploy::Daemon.daemonize(#{args})"
    ruby_opts   = "-r rubygems -r app-deploy/daemon -e \"#{init_script}\""

    yield( config, ruby_opts, rack_opts + " --port #{config[:port]}" )
  }

end

.log_path(path, port) ⇒ Object 



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# File 'lib/app-deploy/rack_cluster.rb', line 65

def log_path path, port
  # log should expand path since daemons' working dir is different
  File.expand_path(RackCluster.path_with_number(path, port))
end

.path_with_number(path, number) ⇒ Object

extracted from thin Add the server port or number in the filename so each instance get its own file



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# File 'lib/app-deploy/rack_cluster.rb', line 73

def path_with_number path, number
  ext = File.extname(path)
  path.gsub(/#{ext}$/, ".#{number}#{ext}")
end

.pid_path(path, port) ⇒ Object 



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# File 'lib/app-deploy/rack_cluster.rb', line 61

def pid_path path, port
  RackCluster.path_with_number(path, port)
end

.start(config, ruby_opts, rack_opts) ⇒ Object 



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# File 'lib/app-deploy/rack_cluster.rb', line 55

def start config, ruby_opts, rack_opts
  puts "Starting #{config[:server]} on #{config[:host]}:#{config[:port]}..."
  sh "rackup #{ruby_opts} #{rack_opts} #{config[:rackup]}"
  puts
end