Class: Mongrel::Command::Registry

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/mongrel/command.rb

Overview

A Singleton class that manages all of the available commands and handles running them.

Instance Method Summary collapse

Instance Method Details

#commands ⇒ Object

Builds a list of possible commands from the Command derivates list



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# File 'lib/mongrel/command.rb', line 150

def commands
  pmgr = GemPlugin::Manager.instance
  list = pmgr.plugins["/commands"].keys
  return list.sort
end

#print_command_list ⇒ Object

Prints a list of available commands.



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# File 'lib/mongrel/command.rb', line 157

def print_command_list
  puts "#{Mongrel::Command::BANNER}\nAvailable commands are:\n\n"

  self.commands.each do |name|
    if /mongrel::/ =~ name
      name = name[9 .. -1]
    end

    puts " - #{name[1 .. -1]}\n"
  end

  puts "\nEach command takes -h as an option to get help."

end

#run(args) ⇒ Object

Runs the args against the first argument as the command name. If it has any errors it returns a false, otherwise it return true.



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# File 'lib/mongrel/command.rb', line 175

def run(args)
  # find the command
  cmd_name = args.shift

  if !cmd_name or cmd_name == "?" or cmd_name == "help"
    print_command_list
    return true
  elsif cmd_name == "--version"
    puts "Mongrel Web Server #{Mongrel::Const::MONGREL_VERSION}"
    return true
  end

  begin
    # quick hack so that existing commands will keep working but the Mongrel:: ones can be moved
    if ["start", "stop", "restart"].include? cmd_name
      cmd_name = "mongrel::" + cmd_name
    end

    command = GemPlugin::Manager.instance.create("/commands/#{cmd_name}", :argv => args)
  rescue OptionParser::InvalidOption
    STDERR.puts "#$! for command '#{cmd_name}'"
    STDERR.puts "Try #{cmd_name} -h to get help."
    return false
  rescue
    STDERR.puts "ERROR RUNNING '#{cmd_name}': #$!"
    STDERR.puts "Use help command to get help"
    return false
  end

  # Normally the command is NOT valid right after being created
  # but sometimes (like with -h or -v) there's no further processing
  # needed so the command is already valid so we can skip it.
  if not command.done_validating
    if not command.validate
      STDERR.puts "#{cmd_name} reported an error. Use mongrel_rails #{cmd_name} -h to get help."
      return false
    else
      command.run
    end
  end

  return true
end