Class: Bosh::Deployer::SshServer

Inherits:
Object
  • Object
show all
Defined in:
lib/bosh/deployer/ssh_server.rb

Constant Summary collapse

SSH_EXCEPTIONS = 
[
  Net::SSH::AuthenticationFailed,
  Net::SSH::ConnectionTimeout,
  Net::SSH::Disconnect,
  Net::SSH::HostKeyError,
]

Instance Method Summary collapse

Constructor Details

#initialize(user, key, port, logger) ⇒ SshServer

Returns a new instance of SshServer.



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# File 'lib/bosh/deployer/ssh_server.rb', line 5

def initialize(user, key, port, logger)
  @user = user
  @key = key
  @port = port
  @logger = logger
end

Instance Method Details

#readable?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bosh/deployer/ssh_server.rb', line 19

def readable?(ip)
  socket = TCPSocket.new(ip, port)
  if IO.select([socket], nil, nil, 5)
    logger.debug("tcp socket #{ip}:#{port} is readable")
    true
  else
    false
  end
rescue SocketError, SystemCallError => e
  logger.debug("tcp socket #{ip}:#{port} #{e.inspect}")
  Kernel.sleep(1)
  false
ensure
  socket.close if socket
end

#start_session(ip) ⇒ Object 



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# File 'lib/bosh/deployer/ssh_server.rb', line 35

def start_session(ip)
  logger.info("Starting SSH session for port forwarding to #{user}@#{ip}...")
  session = Net::SSH.start(ip, user, keys: [key], paranoid: false, port: port)
  logger.debug("ssh #{user}@#{ip}: ESTABLISHED")
  session
rescue *SSH_EXCEPTIONS => e
  logger.debug("ssh start #{user}@#{ip} failed: #{e.inspect}")
  Kernel.sleep(1)
  return nil
end