Quick way to ssh into every slice in an environment on EY Cloud

ssh_into_ey_cloud.rb

=begin

USAGE:
ruby ssh_into_ey_cloud.rb [name of environment]

=end


environment = ARGV[0]

def tmux_arguments_for_server(server)
  "-n #{server[2]} 'ssh #{server[0]}'"
end

# Check if there's already a tmux session for this environment
system("tmux ls 2>/dev/null | grep #{environment}")

if $?.exitstatus != 0
  # There is not a tmux session for this environment, so create it and ssh into everything
  raw = `ey servers -u -e #{environment} | grep -v '^#' | grep -v '^Loading application data'`
  raw_servers = raw.split("\n")

  servers = raw_servers.map{ |r| r.split("\t").map(&:strip) }

  first = servers.shift
  rest = servers

  `tmux new-session -d -s #{environment} #{tmux_arguments_for_server(first)}`
  `tmux set-option status-left-length #{environment.length + 2}`

  rest.each do |server|
    `tmux new-window -d #{tmux_arguments_for_server(server)}`
  end
end

exec "tmux attach-session -t #{environment}"