Class: EC2::Host::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2/host/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv = ARGV) ⇒ CLI

Returns a new instance of CLI.



9
10
11
 
# File 'lib/ec2/host/cli.rb', line 9

def initialize(argv = ARGV)
  @options = parse_options(argv)
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



7
8
9
 
# File 'lib/ec2/host/cli.rb', line 7

def options
  @options
end

Instance Method Details

#parse_options(argv = ARGV) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
 
# File 'lib/ec2/host/cli.rb', line 13

def parse_options(argv = ARGV)
  op = OptionParser.new

  self.class.module_eval do
    define_method(:usage) do |msg = nil|
      puts op.to_s
      puts "error: #{msg}" if msg
      exit 1
    end
  end

  opts = {
    state: ["running"]
  }

  op.on('--hostname one,two,three', Array, "name or private_dns_name") {|v|
    opts[:hostname] = v
  }
  op.on('-r', '--role one,two,three', Array, "role") {|v|
    opts[:role] = v
  }
  1.upto(Config.role_max_depth).each do |i|
    op.on("--r#{i}", "--role#{i} one,two,three", Array, "role#{i}, #{i}th part of role delimited by #{Config.role_tag_delimiter}") {|v|
      opts["role#{i}".to_sym] = v
    }
  end
  op.on('--instance-id one,two,three', Array, "instance_id") {|v|
    opts[:instance_id] = v
  }
  op.on('--state one,two,three', Array, "filter with instance state such as running, stopped (default: running)") {|v|
    opts[:state] = v
  }
  op.on('--monitoring one,two,three', Array, "filter with instance monitoring") {|v|
    opts[:monitoring] = v
  }
  op.on('--[no-]spot', "filter to spot or non-spot instances") {|v|
    opts[:spot] = v
  }
  Config.optional_options.each do |opt, tag|
    op.on("--#{opt.to_s.gsub('_', '-')} one,two,three", Array, opt) {|v|
      opts[opt.to_sym] = v
    }
  end
  op.on('-a', '--all', "list all hosts (remove default filter)") {|v|
    [:hostname, :role, :instance_id, :state, :monitoring].each do |key|
      opts.delete(key)
    end
    1.upto(Config.role_max_depth).each do |i|
      opts.delete("role#{i}".to_sym)
    end
    Config.optional_options.each do |opt, tag|
      opts.delete(opt.to_sym)
    end
  }
  op.on('--private-ip', '--ip', "show private ip address instead of hostname") {|v|
    opts[:private_ip] = v
  }
  op.on('--public-ip', "show public ip address instead of hostname") {|v|
    opts[:public_ip] = v
  }
  op.on('-i', '--info', "show host info") {|v|
    opts[:info] = v
  }
  op.on('-j', '--jsonl', "show host info in line delimited json") {|v|
    opts[:jsonl] = v
  }
  op.on('--json', "show host info in json") {|v|
    opts[:json] = v
  }
  op.on('--pretty-json', "show host info in pretty json") {|v|
    opts[:pretty_json] = v
  }
  op.on('--debug', "debug mode") {|v|
    opts[:debug] = v
  }
  op.on('-h', '--help', "show help") {|v|
    opts[:help] = v
  }
  op.on('-v', '--version', "show version") {|v|
    puts EC2::Host::VERSION
    exit 0
  }

  begin
    args = op.parse(argv)
  rescue OptionParser::InvalidOption => e
    usage e.message
  end

  if opts[:help]
    usage
  end

  opts
end

#run ⇒ Object 



109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
 
# File 'lib/ec2/host/cli.rb', line 109

def run
  hosts = EC2::Host.new(condition).sort_by {|host| host.hostname }
  if options[:info]
    hosts.each do |host|
      $stdout.puts host.info
    end
  elsif options[:jsonl]
    hosts.each do |host|
      $stdout.puts host.to_hash.to_json
    end
  elsif options[:json]
    $stdout.puts hosts.map(&:to_hash).to_json
  elsif options[:pretty_json]
    $stdout.puts JSON.pretty_generate(hosts.map(&:to_hash))
  elsif options[:private_ip]
    hosts.each do |host|
      $stdout.puts host.private_ip_address
    end
  elsif options[:public_ip]
    hosts.each do |host|
      $stdout.puts host.public_ip_address
    end
  else
    hosts.each do |host|
      $stdout.puts host.hostname
    end
  end
end