module Percheron module Commands class Abstract < Clamp::Command option([ '-c', '--config_file' ], 'CONFIG', 'Config file', default: ENV.fetch('PERCHERON_CONFIG', Config::DEFAULT_CONFIG_FILE)) option('--version', :flag, 'show version') do puts Percheron::VERSION exit(0) end def self.default_parameters! parameter('STACK_NAME', 'stack name', required: true) parameter('UNIT_NAMES', 'unit names', default: [], required: false) do |names| names.split(/,/) end end def runit yield rescue Docker::Error::UnexpectedResponseError => e $logger.error('') $logger.error('An exception occurred :(') $logger.error('') $logger.error(e.inspect) end def execute stack.valid? rescue Errno::ENOENT, Errors::ConfigFileInvalid, Errors::StackInvalid => e signal_usage_error(e.message) exit(1) rescue => e puts "%s\n\n%s\n\n" % [ e.inspect, e.backtrace.join("\n") ] signal_usage_error(e.message) exit(1) end def stack return NullStack.new if stack_name.nil? Percheron::Stack.new(config, stack_name) end def config @config ||= begin Percheron::Config.load!(config_file).tap do |c| Percheron::Connection.load!(c) end end end end end end