Class: ConnectivityHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/knife-clc/bootstrap/connectivity_helper.rb

Instance Method Summary collapse

Instance Method Details

#test_ssh_tunnel(params) ⇒ Object 



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# File 'lib/knife-clc/bootstrap/connectivity_helper.rb', line 22

def test_ssh_tunnel(params)
  host = params.fetch(:host)
  port = params.fetch(:port)
  gateway = params.fetch(:gateway)

  gateway_user, gateway_host = gateway.split('@')
  gateway_host, gateway_port = gateway_host.split(':')

  gateway = Net::SSH::Gateway.new(gateway_host, gateway_user, :port => gateway_port || 22)
  status = false
  gateway.open(host, port) do |local_tunnel_port|
    status = test_tcp(:host => 'localhost', :port => local_tunnel_port)
  end
  status
rescue SocketError, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ENETUNREACH, IOError, Errno::EPERM, Errno::ETIMEDOUT
  false
end

#test_tcp(params) ⇒ Object 



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# File 'lib/knife-clc/bootstrap/connectivity_helper.rb', line 5

def test_tcp(params)
  host = params.fetch(:host)
  port = params.fetch(:port)

  socket = TCPSocket.new(host, port)
  if readable = IO.select([socket], [socket], nil, 5)
    yield if block_given?
    true
  else
    false
  end
rescue SocketError, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ENETUNREACH, IOError, Errno::EPERM, Errno::ETIMEDOUT
  false
ensure
  socket && socket.close
end