Class: Bosh::Director::NetworkReservation

Inherits:
Object
  • Object
show all
Includes:
IpUtil
Defined in:
lib/bosh/director/network_reservation.rb

Overview

Network resolution, either existing or one to be fulfilled by Network

Constant Summary collapse

STATIC = 
:static
DYNAMIC = 
:dynamic
USED = 
:used
CAPACITY = 
:capacity
WRONG_TYPE = 
:wrong_type

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from IpUtil

#each_ip, #format_ip, #ip_to_i, #ip_to_netaddr, #process_range

Constructor Details

#initialize(options = {}) ⇒ NetworkReservation

Creates a new network reservation

Parameters:

  • options (Hash) (defaults to: {}) —

    the options to create the reservation from

Options Hash (options):

  • :ip (Integer, String, NetAddr::CIDR) —

    reservation ip

  • :type (Symbol) —

    reservation type



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# File 'lib/bosh/director/network_reservation.rb', line 41

def initialize(options = {})
  @ip = options[:ip]
  @type = options[:type]
  @reserved = false
  @error = nil

  @ip = ip_to_i(@ip) if @ip
end

Instance Attribute Details

#error ⇒ Symbol?

Returns reservation error.

Returns:

  • (Symbol, nil) —

    reservation error



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# File 'lib/bosh/director/network_reservation.rb', line 26

def error
  @error
end

#ip ⇒ Integer?

Returns ip.

Returns:

  • (Integer, nil) —

    ip



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# File 'lib/bosh/director/network_reservation.rb', line 17

def ip
  @ip
end

#reserved ⇒ Boolean

Returns reserved.

Returns:

  • (Boolean) —

    reserved



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# File 'lib/bosh/director/network_reservation.rb', line 23

def reserved
  @reserved
end

#type ⇒ Symbol?

Returns type.

Returns:

  • (Symbol, nil) —

    type



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# File 'lib/bosh/director/network_reservation.rb', line 20

def type
  @type
end

Class Method Details

.new_dynamic(ip = nil) ⇒ Object 



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# File 'lib/bosh/director/network_reservation.rb', line 28

def self.new_dynamic(ip = nil)
  new(:type => NetworkReservation::DYNAMIC, :ip => ip)
end

.new_static(ip = nil) ⇒ Object 



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# File 'lib/bosh/director/network_reservation.rb', line 32

def self.new_static(ip = nil)
  new(:type => NetworkReservation::STATIC, :ip => ip)
end

Instance Method Details

#dynamic? ⇒ Boolean

Returns true if this is a dynamic reservation

Returns:

  • (Boolean) —

    returns true if this is a dynamic reservation



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# File 'lib/bosh/director/network_reservation.rb', line 58

def dynamic?
  @type == DYNAMIC
end

#handle_error(origin) ⇒ Object

Handles network reservation error and re-raises the proper exception

Parameters:

  • origin (String) —

    Whoever tried to take the reservation

Returns:

  • void

Raises:



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# File 'lib/bosh/director/network_reservation.rb', line 90

def handle_error(origin)
  if static?
    formatted_ip = ip_to_netaddr(@ip).ip
    case @error
      when NetworkReservation::USED
        raise NetworkReservationAlreadyInUse,
              "#{origin} asked for a static IP #{formatted_ip} " +
              "but it's already reserved/in use"
      when NetworkReservation::WRONG_TYPE
        raise NetworkReservationWrongType,
              "#{origin} asked for a static IP #{formatted_ip} " +
              "but it's in the dynamic pool"
      else
        raise NetworkReservationError,
              "#{origin} failed to reserve static IP " +
              "#{formatted_ip}: #{@error}"
    end
  else
    case @error
      when NetworkReservation::CAPACITY
        raise NetworkReservationNotEnoughCapacity,
              "#{origin} asked for a dynamic IP " +
              "but there were no more available"
      else
        raise NetworkReservationError,
              "#{origin} failed to reserve dynamic IP " +
              "#{formatted_ip}: #{@error}"
    end
  end
end

#reserved? ⇒ Boolean

Returns true if this reservation was fulfilled

Returns:

  • (Boolean) —

    returns true if this reservation was fulfilled



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# File 'lib/bosh/director/network_reservation.rb', line 64

def reserved?
  !!@reserved
end

#static? ⇒ Boolean

Returns true if this is a static reservation

Returns:

  • (Boolean) —

    returns true if this is a static reservation



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# File 'lib/bosh/director/network_reservation.rb', line 52

def static?
  @type == STATIC
end

#take(other) ⇒ void

This method returns an undefined value.

Tries to take the provided reservation if it meets the requirements



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# File 'lib/bosh/director/network_reservation.rb', line 71

def take(other)
  if other.reserved?
    if @type == other.type
      if dynamic? || (static? && @ip == other.ip)
        @ip = other.ip
        @reserved = true
      end
    end
  end
end