Class: Daemon::Command::Options

Inherits:
Object
  • Object
show all
Includes:
UserInterface
Defined in:
lib/onapp/engine/command/options.rb

Overview

Parses ARGV and provides some options through attribute-accessors

Constant Summary

DEFAULT_DAEMONS_COUNT = 
1

Instance Attribute Summary (collapse)

Attributes included from UserInterface

#err, #out

Instance Method Summary (collapse)

Methods included from UserInterface

#error, #say

Constructor Details

- (Options) initialize(argv, out = $stdout, err = $stderr)

Returns a new instance of Options



16
17
18
19
20
21
22
23
24
 
# File 'lib/onapp/engine/command/options.rb', line 16

def initialize(argv, out = $stdout, err = $stderr)
  @argv = argv.dup
  @out = out
  @err = err

  @forked = true
  @only_instances = false
  @forced = false
end

Instance Attribute Details

- (Object) command

Returns the value of attribute command



11
12
13
 
# File 'lib/onapp/engine/command/options.rb', line 11

def command
  @command
end

- (Object) forced

Returns the value of attribute forced



11
12
13
 
# File 'lib/onapp/engine/command/options.rb', line 11

def forced
  @forced
end

- (Object) forked

Returns the value of attribute forked



11
12
13
 
# File 'lib/onapp/engine/command/options.rb', line 11

def forked
  @forked
end

- (Object) only_instances

Returns the value of attribute only_instances



11
12
13
 
# File 'lib/onapp/engine/command/options.rb', line 11

def only_instances
  @only_instances
end

Instance Method Details

- (Object) parse!

Validates and parses ARGV

See Also:



29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/onapp/engine/command/options.rb', line 29

def parse!
  parser = OptionParser.new do |opts|
    opts.banner = "Usage: #{$0} #{COMMANDS.join('|')}"
    opts.separator 'Options:'

    opts.on '-f', '--[no-]fork', 'Fork and detach' do |v|
      @forked = v
    end

    opts.on '-F', '--force', 'Force stop' do |v|
      @forced = v
    end

    opts.on '-o', '--only-instances', 'Stop only instances, don\'t kill master' do |v|
      @only_instances = v
    end

    opts.on_tail '-h', '--help', 'Show this message' do
      say parser
      return false
    end
  end

  parser.parse!(@argv)

  @command = @argv[0]

  if @argv.length == 0 || @argv.length > 1 || !Daemon::Command::COMMANDS.include?(@command)
    error "Wrong command: #{@argv.join(' ')}"
    error parser
    return false
  end

  true
rescue OptionParser::ParseError => ex
  error ex.message
  error parser
  return false
end