Class: ThinService::Command::Registry

Inherits:
Object
  • Object
show all
Defined in:
lib/thin_service/command.rb

Overview

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/thin_service/command.rb', line 358

def commands
  ThinService::Command::COMMANDS
end

#constantize(class_name) ⇒ Object 



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# File 'lib/thin_service/command.rb', line 374

def constantize(class_name)
  unless /\A(?:::)?([A-Z]\w*(?:::[A-Z]\w*)*)\z/ =~ class_name
    raise NameError, "#{class_name.inspect} is not a valid constant name!"
  end

  Object.module_eval("::#{$1}", __FILE__, __LINE__)
end

#print_command_list ⇒ Object

Prints a list of available commands.



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# File 'lib/thin_service/command.rb', line 363

def print_command_list
  puts("#{ThinService::Command::BANNER}\nAvailable commands are:\n\n")

  self.commands.each do |name|
    puts(" - #{name}\n") unless name == "start"
  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/thin_service/command.rb', line 385

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

  if !cmd_name || cmd_name == "-?" || cmd_name == "--help"
    print_command_list
    return true
  elsif cmd_name == "--version"
    puts("ThinService #{ThinService::VERSION}")
    return true
  end

  begin
    cmd_class_name = "ThinService::Command::Commands::" + cmd_name.capitalize
    command = constantize(cmd_class_name).new( :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

  if !command.done_validating 
    if !command.validate
      STDERR.puts "#{cmd_name} reported an error. Use thin_service #{cmd_name} -h to get help."
      return false
    else
      command.run
    end
  end

  return true
end