Class: Ec2ssh::App

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2ssh.rb

Instance Method Summary collapse

Constructor Details

#initialize(file = "~/.ec2ssh", account = :default) ⇒ App

Returns a new instance of App.



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# File 'lib/ec2ssh.rb', line 17

def initialize(file = "~/.ec2ssh", =:default)
  @config = read_aws_config(file, )
  @config[:cache_ttl] ||= 0
  @config[:account] = .to_s
end

Instance Method Details

#select_instance(instances = []) ⇒ Object 



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# File 'lib/ec2ssh.rb', line 23

def select_instance(instances=[])
  # TODO: Ansi colors https://github.com/JEG2/highline/blob/master/examples/ansi_colors.rb
  instances = get_all_ec2_instances
  table_rows = []

  instances.each do |i|
    if i[:aws_state] == "running"
      table_rows << ['', i[:tags]["Name"].blank? ? '' : i[:tags]["Name"], i[:aws_instance_id], i[:aws_groups].join(','), i[:ssh_key_name], i[:aws_private_ip_address], i[:dns_name], i[:architecture], i[:aws_instance_type]]
    end
  end

  # sort tables by tag name
  table_rows.sort! do |a, b|
    a[1] <=> b[1]
  end

  # give them numbers
  table_rows.count.times do |i|
    table_rows[i][0] = i + 1
  end

  table_header = ['', 'Name', 'Instance ID', 'SecGroup', 'Key', 'Internal IP', 'Public DNS', 'Arch', 'Type']

  table = Text::Table.new :rows => table_rows, :head => table_header

  # output table
  puts table

  puts ">> id-or-name <user> <key> <public or private>"
  input = ask(">> ")
  options = input.split

  # check if last arg is 'public' or 'private'. If so remove it from the options stack and save the value
  pub_priv_override = ''
  if options[-1] =~ /public|private/
    pub_priv_override = options.pop
  end

  input_host = options[0]
  input_user = options[1]
  input_key  = options[2]

  if input_host =~ /^\d+$/
    host = table_rows[input_host.to_i - 1]
  else
    host = table_rows.find { |h| h[1] == input_host }
  end

  host_ssh_key    = host[4]
  host_private_ip = host[5]
  host_public_dns = host[6]

  default_user = @config[:default_user] || Etc.getlogin

  template = @config[:template] || "ssh #{default_user}@<public_dns>"

  # if we have a public or private ip override, replace the template variable
  unless pub_priv_override.blank?
    case pub_priv_override
    when 'public'
      template.gsub!("<private_ip>", "<public_dns>")
    when 'private'
      template.gsub!("<public_dns>", "<private_ip>")
    end
  end

  # <instance> remains for compatibility with upstream
  command = template.gsub("<instance>", host_public_dns).
                     gsub("<public_dns>", host_public_dns).
                     gsub("<private_ip>", host_private_ip)

  # interpolate ssh user
  if input_user.blank?
    command.gsub!("<user>", default_user)
  else
    command.gsub!("<user>", input_user)
  end

  # interpolate ssh key
  if input_key.blank?
    command.gsub!("<key>", "")
  else
    command.gsub!("<key>", "-i ~/.ssh/#{input_key}.pem")
  end

  puts "!!! #{command}"
  exec(command)
end