Class: Iface::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/iface/config.rb

Overview

Represents a set of ConfigFiles for network interface configuration

Constant Summary collapse

Reserved_IP_Ranges = 
%w[10.0.0.0/8 192.168.0.0/16].collect { |i| IPAddr.new(i) }

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Config

Returns a new instance of Config.



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# File 'lib/iface/config.rb', line 19

def initialize
  @files = {}
  @devices = {}
end

Class Method Details

.discover(pattern) ⇒ Object 



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# File 'lib/iface/config.rb', line 11

def self.discover(pattern)
  new.tap do |config|
    Dir.glob(pattern) do |fullname|
      File.open(fullname) { |io| config.add(fullname, io) }
    end
  end
end

Instance Method Details

#[](device) ⇒ Object

Returns the ‘PrimaryFile` for `device`



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# File 'lib/iface/config.rb', line 43

def [](device)
  @devices[device]
end

#add(filename, io) ⇒ Object

Adds the given ‘filename` and `io` and returns self



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# File 'lib/iface/config.rb', line 25

def add(filename, io)
  file = ConfigFile.create(filename, io)

  # add to files by type
  file_type = file.class.file_type_name
  if @files.key?(file_type)
    @files[file_type] << file
  else
    @files[file_type] = [file]
  end

  # add PrimaryFile to devices by device name
  @devices[file.device] = file if file.is_a?(PrimaryFile)

  self
end

#primary ⇒ Object

Returns the ‘PrimaryFile` for the primary interface

There should be 0 or 1 of these; else it’s an error.



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# File 'lib/iface/config.rb', line 50

def primary
  result = @files[:primary].select do |file|
    if !file.static?
      true
    elsif file.ip_address.nil?
      false
    else
      ipaddr = IPAddr.new(file.ip_address)
      Reserved_IP_Ranges.none? { |range| range.include?(ipaddr) }
    end
  end

  case result.size
  when 0
    nil
  when 1
    result.first
  else
    raise "Expected 0 or 1 primary files; found #{result.size}"
  end
end