Class: VagrantPlugins::Parallels::Action::ForwardPorts

Inherits:
Object
  • Object
show all
Includes:
Util::CompileForwardedPorts
Defined in:
lib/vagrant-parallels/action/forward_ports.rb

Constant Summary collapse

@@lock = 
Mutex.new

Instance Method Summary collapse

Methods included from Util::CompileForwardedPorts

#compile_forwarded_ports

Constructor Details

#initialize(app, _env) ⇒ ForwardPorts

Returns a new instance of ForwardPorts.



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# File 'lib/vagrant-parallels/action/forward_ports.rb', line 8

def initialize(app, _env)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object

Execution



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# File 'lib/vagrant-parallels/action/forward_ports.rb', line 15

def call(env)
  @env = env

  # Get the ports we're forwarding
  env[:forwarded_ports] ||= compile_forwarded_ports(env[:machine].config)

  # Exit if there are no ports to forward
  return @app.call(env) if env[:forwarded_ports].empty?

  # Acquire both of class- and process-level locks so that we don't
  # forward ports simultaneously with someone else.
  @@lock.synchronize do
    env[:machine].env.lock('forward_ports') do
      env[:ui].output(I18n.t('vagrant.actions.vm.forward_ports.forwarding'))
      forward_ports
    end
  rescue Vagrant::Errors::EnvironmentLockedError
    sleep 1
    retry
  end

  @app.call(env)
end

#forward_ports ⇒ Object 



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# File 'lib/vagrant-parallels/action/forward_ports.rb', line 39

def forward_ports
  all_rules = @env[:machine].provider.driver.read_forwarded_ports(true)
  names_in_use = all_rules.collect { |r| r[:name] }
  ports = []

  @env[:forwarded_ports].each do |fp|
    message_attributes = {
      guest_port: fp.guest_port,
      guest_ip: fp.guest_ip,
      host_port: fp.host_port,
      host_ip: fp.host_ip
    }

    # Assuming the only reason to establish port forwarding is
    # because the VM is using Shared networking. Host-only and
    # bridged networking don't require port-forwarding and establishing
    # forwarded ports on these attachment types has uncertain behaviour.
    @env[:ui].detail(I18n.t('vagrant_parallels.actions.vm.forward_ports.forwarding_entry',
                            **message_attributes))

    # In Parallels Desktop the scope port forwarding rules is global,
    # so we have to keep their names unique.
    unique_id = fp.id
    # Append random suffix to get the unique rule name
    while names_in_use.include?(unique_id)
      suffix = (0...4).map { ('a'..'z').to_a[rand(26)] }.join
      unique_id = "#{fp.id}_#{suffix}"
    end
    # Mark this rule name as in use
    names_in_use << unique_id

    # Add the options to the ports array to send to the driver later
    ports << {
      guest_port: fp.guest_port,
      guest_ip: fp.guest_ip,
      host_port: fp.host_port,
      host_ip: fp.host_ip,
      name: unique_id,
      protocol: fp.protocol
    }
  end

  unless ports.empty?
    # We only need to forward ports if there are any to forward
    @env[:machine].provider.driver.forward_ports(ports)
  end
end