Class: Visor::Meta::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/meta/cli.rb

Constant Summary collapse

COMMANDS =

Available commands

%w[start stop restart status clean]
NO_CONF_COMMANDS =

Commands that wont load options from the config file

%w[stop status]
DEFAULT_DIR =

Default config files directories to look at

File.expand_path('~/.visor')
DEFAULT_HOST =

Default host address

'0.0.0.0'
DEFAULT_PORT =

Default port

4567
DEFAULT_ENV =

Default application environment

:production

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, cli_name, argv = ARGV) ⇒ CLI

Initialize a CLI



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# File 'lib/meta/cli.rb', line 29

def initialize(app, cli_name, argv=ARGV)
  @app = app
  @cli_name = cli_name
  @argv = argv
  @options = default_opts
  @parser = parser
  @command = parse!
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/meta/cli.rb', line 11

def app
  @app
end

#argv ⇒ Object (readonly)

Returns the value of attribute argv.



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# File 'lib/meta/cli.rb', line 11

def argv
  @argv
end

#cli_name ⇒ Object (readonly)

Returns the value of attribute cli_name.



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# File 'lib/meta/cli.rb', line 11

def cli_name
  @cli_name
end

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/meta/cli.rb', line 11

def command
  @command
end

#env ⇒ Object (readonly)

Returns the value of attribute env.



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# File 'lib/meta/cli.rb', line 11

def env
  @env
end

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/meta/cli.rb', line 11

def host
  @host
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/meta/cli.rb', line 11

def options
  @options
end

#parser ⇒ Object (readonly)

OptionParser parser



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# File 'lib/meta/cli.rb', line 47

def parser
  @parser
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/meta/cli.rb', line 11

def port
  @port
end

Instance Method Details

#clean ⇒ Object

Remove all files created by the daemon.



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# File 'lib/meta/cli.rb', line 132

def clean
  begin
    FileUtils.rm(pid_file) rescue Errno::ENOENT
  end
  begin
    FileUtils.rm(url_file) rescue Errno::ENOENT
  end
  put_and_log :warn, "Removed all files created by server start"
end

#default_opts ⇒ Object 



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# File 'lib/meta/cli.rb', line 38

def default_opts
  {debug: false,
   foreground: false,
   no_proxy: false,
   environment: DEFAULT_ENV}
end

#launch! ⇒ Object

Launch the server



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# File 'lib/meta/cli.rb', line 192

def launch!
  put_and_log :info, "Starting #{cli_name} at #{host}:#{port}"
  debug_settings

  Rack::Server.start(app: app,
                     Host: host,
                     Port: port,
                     environment: get_env,
                     daemonize: daemonize?,
                     pid: pid_file)
end

#restart ⇒ Object

Restart server



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# File 'lib/meta/cli.rb', line 144

def restart
  @restart = true
  stop
  sleep 0.1 while running?
  start
end

#run! ⇒ Object

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



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# File 'lib/meta/cli.rb', line 100

def run!
  if command.nil?
    abort @parser.to_s
  elsif COMMANDS.include?(command)
    run_command
  else
    abort "Unknown command: #{command}. Available commands: #{COMMANDS.join(', ')}"
  end
end

#run_command ⇒ Object

Execute the command



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# File 'lib/meta/cli.rb', line 112

def run_command
  unless NO_CONF_COMMANDS.include?(command)
    @conf = load_conf_file
    @host = options[:host] || @conf[:bind_host] || DEFAULT_HOST
    @port = options[:port] || @conf[:bind_port] || DEFAULT_PORT
    @env = options[:environment]
  end

  case command
    when 'start' then start
    when 'stop' then stop
    when 'restart' then restart
    when 'status' then status
    else clean
  end
  exit 0
end

#start ⇒ Object

Start the server



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# File 'lib/meta/cli.rb', line 177

def start
  FileUtils.mkpath(DEFAULT_DIR)
  begin
    is_it_running?
    can_use_port?
    write_url
    launch!
  rescue => e
    put_and_log :warn, "ERROR starting #{cli_name}: #{e}"
    exit! 1
  end
end

#status ⇒ Object

Display current server status



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# File 'lib/meta/cli.rb', line 153

def status
  if running?
    STDERR.puts "#{cli_name} is running PID: #{fetch_pid} URL: #{fetch_url}"
  else
    STDERR.puts "#{cli_name} is not running."
  end
end

#stop ⇒ Object

Stop the server



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# File 'lib/meta/cli.rb', line 163

def stop
  begin
    pid = File.read(pid_file)
    put_and_log :warn, "Stopping #{cli_name} with PID: #{pid.to_i} Signal: INT"
    Process.kill(:INT, pid.to_i)
    File.delete(url_file)
  rescue
    put_and_log :warn, "Cannot stop #{cli_name}, is it running?"
    exit! 1
  end
end