Class: Yle::AWS::Role::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/yle/aws/role/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Cli

Returns a new instance of Cli.



13
14
15
16
 
# File 'lib/yle/aws/role/cli.rb', line 13

def initialize(argv)
  parse_args(argv)
  verify_args
end

Instance Attribute Details

#account_name ⇒ Object (readonly)

Returns the value of attribute account_name.



11
12
13
 
# File 'lib/yle/aws/role/cli.rb', line 11

def 
  @account_name
end

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



11
12
13
 
# File 'lib/yle/aws/role/cli.rb', line 11

def opts
  @opts
end

Instance Method Details

#assume_role ⇒ Object 



93
94
95
96
97
98
99
100
101
 
# File 'lib/yle/aws/role/cli.rb', line 93

def assume_role
  Role.assume_role(, opts[:role], opts[:duration]) do |role|
    STDERR.puts("Assumed role #{role.name}") if !opts[:quiet]
    yield role
  end
rescue Errors::AssumeRoleError => e
  STDERR.puts e
  exit 1
end

#command ⇒ Object 



103
104
105
106
 
# File 'lib/yle/aws/role/cli.rb', line 103

def command
  @command = shell if @command.empty?
  @command
end

#default_shell ⇒ Object 



120
121
122
 
# File 'lib/yle/aws/role/cli.rb', line 120

def default_shell
  ENV.fetch('SHELL', 'bash')
end

#execute ⇒ Object 



67
68
69
70
71
72
73
74
75
 
# File 'lib/yle/aws/role/cli.rb', line 67

def execute
  if opts[:list]
    list_accounts
  elsif opts[:env]
    print_env_vars
  else
    run_command
  end
end

#list_accounts ⇒ Object 



77
78
79
 
# File 'lib/yle/aws/role/cli.rb', line 77

def list_accounts
  puts Role.accounts
end

#parse_args(argv) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



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
 
# File 'lib/yle/aws/role/cli.rb', line 19

def parse_args(argv)
  @opts = Slop.parse(argv) do |o|
    o.banner = 'Usage: asu <account> [options] -- [command ...]'
    o.separator '   or: asu --list'
    o.separator ''
    o.separator '    account         The account ID or pattern of the role account'
    o.separator '    command         Command to execute with the role. ' \
                                    'Defaults to launching new shell session.'
    o.separator ''
    o.integer '-d', '--duration', 'Duration for the role credentials. ' \
                                  "Default: #{Role.default_duration}"
    o.bool '--env', 'Print out environment variables and exit'
    o.bool '-l', '--list', 'Print out all configured account aliases'
    o.bool '-q', '--quiet', 'Be quiet'
    o.string '-r', '--role', "Name of the role. Default: '#{Role.default_role_name}'"
    o.separator ''
    o.on '-h', '--help', 'Prints this help' do
      puts o
      exit
    end
    o.on '-v', '--version', 'Prints the version information' do
      puts VERSION
      exit
    end
  end

  @account_name = @opts.args.shift
  @command = @opts.args
rescue Slop::Error => e
  STDERR.puts e
  exit 64
end

#print_env_vars ⇒ Object 



81
82
83
 
# File 'lib/yle/aws/role/cli.rb', line 81

def print_env_vars
  assume_role(&:print_env_vars)
end

#run_command ⇒ Object 



85
86
87
88
89
90
91
 
# File 'lib/yle/aws/role/cli.rb', line 85

def run_command
  assume_role do
    ret = system(*command)
    STDERR.puts "Failed to execute '#{command.first}'" if ret.nil?
    exit(1) if !ret
  end
end

#shell ⇒ Object 



108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/yle/aws/role/cli.rb', line 108

def shell
  shell = default_shell

  if !opts[:quiet]
    puts "Executing shell '#{shell}' with the assumed role"
    puts 'Use `exit` to quit'
    puts
  end

  [shell]
end

#verify_args ⇒ Object

rubocop:enable Metrics/AbcSize, Metrics/MethodLength



53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/yle/aws/role/cli.rb', line 53

def verify_args
  return if opts[:list]

  if !
    STDERR.puts opts
    exit 64
  end

  if !(opts[:role] || Role.default_role_name)
    STDERR.puts 'Role name must be passed with `--role` or set in the config'
    exit 64
  end
end