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)
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

#command ⇒ Object (readonly)

Returns the value of attribute command.



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

def command
  @command
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

#duration ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 98

def duration
  opts[:duration] || Role.config['defaults']['duration']
end

#execute ⇒ Object 



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

def execute
  if opts[:list]
    puts Role.accounts
    return
  end

  if !role_name
    STDERR.puts 'Role name must be passed with `--role` or set in the config'
    exit 64
  end

  Role.assume_role(, role_name, duration) do |role|
    STDERR.puts("Assumed role #{role.name}") if !opts[:quiet]

    if opts[:env]
      role.print_env_vars
    else
      run_command
    end
  end
rescue Errors::AssumeRoleError => e
  STDERR.puts e
  exit 1
end

#parse_args(argv) ⇒ Object 



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

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'
    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

  if !@account_name && !@opts[:list]
    STDERR.puts @opts
    exit 64
  end
rescue Slop::Error => e
  STDERR.puts e
  exit 64
end

#role_name ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 94

def role_name
  opts[:role] || Role.config['defaults']['role']
end

#run_command ⇒ Object 



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# File 'lib/yle/aws/role/cli.rb', line 76

def run_command
  cmd = command
  if cmd.empty?
    shell = ENV.fetch('SHELL', 'bash')
    cmd = [shell]

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

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