Class: VagrantPlugins::Skytap::Util::Subnet

Inherits:
Object
  • Object
show all
Defined in:
lib/vagrant-skytap/util/subnet.rb

Defined Under Namespace

Classes: InvalidSubnet

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cidr_block) ⇒ Subnet

Returns a new instance of Subnet.



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 11

def initialize(cidr_block)
  unless cidr_block =~ /^(.*)\/(.*)/
    raise InvalidSubnet.new 'Not in CIDR block form (XX.XX.XX.XX/YY)'
  end

  network = $1
  begin
    @size = Integer($2)
  rescue
    raise InvalidSubnet.new 'Invalid size'
  end

  @address = IpAddress.new(network)
  @mask = size_to_mask(@size)
end

Instance Attribute Details

#address ⇒ Object (readonly)

Returns the value of attribute address.



9
10
11
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 9

def address
  @address
end

#mask ⇒ Object (readonly)

Returns the value of attribute mask.



9
10
11
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 9

def mask
  @mask
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



9
10
11
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 9

def size
  @size
end

Instance Method Details

#<=>(other) ⇒ Object 



83
84
85
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 83

def <=>(other)
  to_s <=> other.to_s
end

#==(other) ⇒ Object 



32
33
34
35
36
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 32

def ==(other)
  other.is_a?(Subnet) && \
  (size == other.size) && \
  network_portion == other.network_portion
end

#contains?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


58
59
60
61
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 58

def contains?(ip)
  ip = IpAddress.new(ip) unless ip.is_a?(IpAddress)
  (ip & mask) == network_portion
end

#each_address ⇒ Object 



54
55
56
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 54

def each_address
  (min.to_i..max.to_i).each{|i| yield IpAddress.new(i)}
end

#max ⇒ Object 



50
51
52
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 50

def max
  @max ||= (mask.inverse | network_portion)
end

#min_machine_ip ⇒ Object 



67
68
69
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 67

def min_machine_ip
  min + 1
end

#network_portion ⇒ Object Also known as: min 



27
28
29
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 27

def network_portion
  @network_portion ||= (mask & address)
end

#normalize ⇒ Object 



75
76
77
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 75

def normalize
  Subnet.new("#{network_portion}/#{size}")
end

#normalized? ⇒ Boolean

Returns:

  • (Boolean) 


71
72
73
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 71

def normalized?
  address == network_portion
end

#num_addresses ⇒ Object 



63
64
65
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 63

def num_addresses
  2 ** (32-size)
end

#overlaps?(other) ⇒ Boolean

Returns:

  • (Boolean) 


38
39
40
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 38

def overlaps?(other)
  min <= other.max && max >= other.min
end

#strictly_subsumes?(other) ⇒ Boolean

Returns:

  • (Boolean) 


46
47
48
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 46

def strictly_subsumes?(other)
  subsumes?(other) && self != other
end

#subsumes?(other) ⇒ Boolean

Returns:

  • (Boolean) 


42
43
44
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 42

def subsumes?(other)
  min <= other.min && max >= other.max
end

#to_s ⇒ Object 



79
80
81
 
# File 'lib/vagrant-skytap/util/subnet.rb', line 79

def to_s
  "#{address}/#{size}"
end