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.



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

def initialize(argv)
  parse_args(argv)
  verify_args
end

Instance Attribute Details

#account_name ⇒ Object (readonly)

Returns the value of attribute account_name.



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# File 'lib/yle/aws/role/cli.rb', line 9

def 
  @account_name
end

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



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# File 'lib/yle/aws/role/cli.rb', line 9

def opts
  @opts
end

Instance Method Details

#assume_role ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 91

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 



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# File 'lib/yle/aws/role/cli.rb', line 101

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

#default_shell ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 118

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

#execute ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 65

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

#list_accounts ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 75

def list_accounts
  puts Role.accounts
end

#parse_args(argv) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



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# File 'lib/yle/aws/role/cli.rb', line 17

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 



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

def print_env_vars
  assume_role(&:print_env_vars)
end

#run_command ⇒ Object 



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

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 



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

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



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# File 'lib/yle/aws/role/cli.rb', line 51

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