Class: Thin::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/thin/runner.rb

Overview

CLI runner. Parse options and send command to the correct Controller.

Constant Summary collapse

COMMANDS = 
%w(start stop restart config)
LINUX_ONLY_COMMANDS = 
%w(install)
CONFIGLESS_COMMANDS =

Commands that wont load options from the config file

%w(config install)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/thin/runner.rb', line 30

def initialize(argv)
  @argv = argv
  
  # Default options values
  @options = {
    :chdir                => Dir.pwd,
    :environment          => 'development',
    :address              => '0.0.0.0',
    :port                 => Server::DEFAULT_PORT,
    :timeout              => Server::DEFAULT_TIMEOUT,
    :log                  => 'log/thin.log',
    :pid                  => 'tmp/pids/thin.pid',
    :max_conns            => Server::DEFAULT_MAXIMUM_CONNECTIONS,
    :max_persistent_conns => Server::DEFAULT_MAXIMUM_PERSISTENT_CONNECTIONS,
    :require              => []
  }
  
  parse!
end

Instance Attribute Details

#arguments ⇒ Object

Arguments to be passed to the command.



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# File 'lib/thin/runner.rb', line 21

def arguments
  @arguments
end

#command ⇒ Object

Name of the command to be runned.



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# File 'lib/thin/runner.rb', line 18

def command
  @command
end

#options ⇒ Object

Parsed options



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# File 'lib/thin/runner.rb', line 15

def options
  @options
end

Class Method Details

.commands ⇒ Object

Return all available commands



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# File 'lib/thin/runner.rb', line 24

def self.commands
  commands  = COMMANDS
  commands += LINUX_ONLY_COMMANDS if Thin.linux?
  commands
end

Instance Method Details

#cluster? ⇒ Boolean

true if we’re controlling a cluster.

Returns:

  • (Boolean) 


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# File 'lib/thin/runner.rb', line 183

def cluster?
  @options[:only] || @options[:servers] || @options[:config]
end

#parse! ⇒ Object

Parse the options.



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# File 'lib/thin/runner.rb', line 129

def parse!
  parser.parse! @argv
  @command   = @argv.shift
  @arguments = @argv
end

#parser ⇒ Object 



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# File 'lib/thin/runner.rb', line 50

def parser
  # NOTE: If you add an option here make sure the key in the +options+ hash is the
  # same as the name of the command line option.
  # +option+ keys are used to build the command line to launch other processes,
  # see <tt>lib/thin/command.rb</tt>.
  @parser ||= OptionParser.new do |opts|
    opts.banner = "Usage: thin [options] #{self.class.commands.join('|')}"

    opts.separator ""
    opts.separator "Server options:"

    opts.on("-a", "--address HOST", "bind to HOST address " +
                                    "(default: #{@options[:address]})")             { |host| @options[:address] = host }
    opts.on("-p", "--port PORT", "use PORT (default: #{@options[:port]})")          { |port| @options[:port] = port.to_i }
    opts.on("-S", "--socket FILE", "bind to unix domain socket")                    { |file| @options[:socket] = file }
    opts.on("-y", "--swiftiply [KEY]", "Run using swiftiply")                       { |key| @options[:swiftiply] = key }
    opts.on("-A", "--adapter NAME", "Rack adapter to use (default: autodetect)",
                                    "(#{Rack::ADAPTERS.map{|(a,b)|a}.join(', ')})") { |name| @options[:adapter] = name }
    opts.on("-R", "--rackup FILE", "Load a Rack config file instead of " +
                                   "Rack adapter")                                  { |file| @options[:rackup] = file }
    opts.on("-c", "--chdir DIR", "Change to dir before starting")                   { |dir| @options[:chdir] = File.expand_path(dir) }
    opts.on(      "--stats PATH", "Mount the Stats adapter under PATH")             { |path| @options[:stats] = path }
    
    opts.separator ""
    opts.separator "Adapter options:"
    opts.on("-e", "--environment ENV", "Framework environment " +                       
                                       "(default: #{@options[:environment]})")      { |env| @options[:environment] = env }
    opts.on(      "--prefix PATH", "Mount the app under PATH (start with /)")       { |path| @options[:prefix] = path }
    
    unless Thin.win? # Daemonizing not supported on Windows
      opts.separator ""
      opts.separator "Daemon options:"
                                                                                  
      opts.on("-d", "--daemonize", "Run daemonized in the background")              { @options[:daemonize] = true }
      opts.on("-l", "--log FILE", "File to redirect output " +                      
                                  "(default: #{@options[:log]})")                   { |file| @options[:log] = file }
      opts.on("-P", "--pid FILE", "File to store PID " +                            
                                  "(default: #{@options[:pid]})")                   { |file| @options[:pid] = file }
      opts.on("-u", "--user NAME", "User to run daemon as (use with -g)")           { |user| @options[:user] = user }
      opts.on("-g", "--group NAME", "Group to run daemon as (use with -u)")         { |group| @options[:group] = group }
                                                                                  
      opts.separator ""
      opts.separator "Cluster options:"                                             
                                                                                  
      opts.on("-s", "--servers NUM", "Number of servers to start")                  { |num| @options[:servers] = num.to_i }
      opts.on("-o", "--only NUM", "Send command to only one server of the cluster") { |only| @options[:only] = only }
      opts.on("-C", "--config FILE", "Load options from config file")               { |file| @options[:config] = file }
      opts.on(      "--all [DIR]", "Send command to each config files in DIR")      { |dir| @options[:all] = dir } if Thin.linux?
    end
    
    opts.separator ""
    opts.separator "Tuning options:"
    
    opts.on("-b", "--backend CLASS", "Backend to use, full classname")              { |name| @options[:backend] = name }
    opts.on("-t", "--timeout SEC", "Request or command timeout in sec " +            
                                   "(default: #{@options[:timeout]})")              { |sec| @options[:timeout] = sec.to_i }
    opts.on("-f", "--force", "Force the execution of the command")                  { @options[:force] = true }
    opts.on(      "--max-conns NUM", "Maximum number of connections " +
                                     "(default: #{@options[:max_conns]})",
                                     "Might require sudo to set higher then 1024")  { |num| @options[:max_conns] = num.to_i } unless Thin.win?
    opts.on(      "--max-persistent-conns NUM",
                                   "Maximum number of persistent connections",
                                   "(default: #{@options[:max_persistent_conns]})") { |num| @options[:max_persistent_conns] = num.to_i }
    opts.on(      "--threaded", "Call the Rack application in threads " +
                                "[experimental]")                                   { @options[:threaded] = true }
    opts.on(      "--no-epoll", "Disable the use of epoll")                         { @options[:no_epoll] = true } if Thin.linux?
    
    opts.separator ""
    opts.separator "Common options:"

    opts.on_tail("-r", "--require FILE", "require the library")                     { |file| @options[:require] << file }
    opts.on_tail("-D", "--debug", "Set debbuging on")                               { @options[:debug] = true }
    opts.on_tail("-V", "--trace", "Set tracing on (log raw request/response)")      { @options[:trace] = true }
    opts.on_tail("-h", "--help", "Show this message")                               { puts opts; exit }
    opts.on_tail('-v', '--version', "Show version")                                 { puts Thin::SERVER; exit }
  end
end

#run! ⇒ Object

Parse the current shell arguments and run the command. Exits on error.



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# File 'lib/thin/runner.rb', line 137

def run!
  if self.class.commands.include?(@command)
    run_command
  elsif @command.nil?
    puts "Command required"
    puts @parser
    exit 1  
  else
    abort "Invalid command: #{@command}"
  end
end

#run_command ⇒ Object

Send the command to the controller: single instance or cluster.



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# File 'lib/thin/runner.rb', line 150

def run_command
  load_options_from_config_file! unless CONFIGLESS_COMMANDS.include?(@command)
  
  # PROGRAM_NAME is relative to the current directory, so make sure
  # we store and expand it before changing directory.
  Command.script = File.expand_path($PROGRAM_NAME)
  
  # Change the current directory ASAP so that all relative paths are
  # relative to this one.
  Dir.chdir(@options[:chdir]) unless CONFIGLESS_COMMANDS.include?(@command)
  
  @options[:require].each { |r| ruby_require r }
  Logging.debug = @options[:debug]
  Logging.trace = @options[:trace]
  
  controller = case
  when cluster? then Controllers::Cluster.new(@options)
  when service? then Controllers::Service.new(@options)
  else               Controllers::Controller.new(@options)
  end
  
  if controller.respond_to?(@command)
    begin
      controller.send(@command, *@arguments)
    rescue RunnerError => e
      abort e.message
    end
  else
    abort "Invalid options for command: #{@command}"
  end
end

#service? ⇒ Boolean

true if we’re acting a as system service.

Returns:

  • (Boolean) 


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# File 'lib/thin/runner.rb', line 188

def service?
  @options.has_key?(:all) || @command == 'install'
end