Class: HostManager

Inherits:
Object
  • Object
show all
Defined in:
lib/maphosts/host_manager.rb

Instance Method Summary collapse

Constructor Details

#initialize(hostsfile_path, hosts, section_name, ip, verbose = false) ⇒ HostManager

Returns a new instance of HostManager.



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# File 'lib/maphosts/host_manager.rb', line 6

def initialize(hostsfile_path, hosts, section_name, ip, verbose = false)
  @hostsfile = Hosts::File.read(hostsfile_path)
  @hosts = hosts
  @section = init_section("maphosts - #{section_name}")
  @ip = ip
  @dirty = false
  @verbose = verbose
end

Instance Method Details

#patch ⇒ Object 



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# File 'lib/maphosts/host_manager.rb', line 15

def patch
  migrate_hosts(@section, @hostsfile, @hosts)

  @hosts.each do |hostname|
    host = @section.elements.find { |h| h.respond_to?(:name) && h.name == hostname }

    if !host
      log '+', hostname, "will be added"
      @section.elements << Hosts::Entry.new(@ip, hostname)
      @dirty = true
    else
      if host.address != @ip
        log '*', hostname, "is pointing to #{host.address} instead of #{@ip}"
        host.address = @ip
        @dirty = true
      else
        log '*', hostname, "is already set up correctly"
      end
    end
  end

  if !@dirty
    nil
  else
    # Strip whitespace at end of file
    if !@hostsfile.elements.last.nil? && @hostsfile.elements.last.kind_of?(Hosts::EmptyElement)
      @hostsfile.elements.delete @hostsfile.elements.last
    end

    if @hostsfile.to_s.empty?
      raise "The patched hostsfile is empty. This is most likely due to a bug. No worry, the file has not been written."
    end

    @hostsfile
  end
end