Class: Dnsync::Cli

Inherits:
Object
  • Object
show all
Defined in:
lib/dnsync/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/dnsync/cli.rb', line 17

def initialize(argv)
  @args         = argv.dup
  @program_name = File.basename($0)
end

Instance Attribute Details

#program_name ⇒ Object (readonly)

Returns the value of attribute program_name.



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# File 'lib/dnsync/cli.rb', line 15

def program_name
  @program_name
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/dnsync/cli.rb', line 22

def call
  Configlet.prefix = 'dnsync'
  Configlet.munge(:noop) { |v| v == "true" }
  Configlet.munge(:monitor_frequency) { |v| v.present? ? v.to_i : v }

  Scrolls.single_line_exceptions = true

  read_env_from_file(File.expand_path("~/.dnsync.env"))
  read_env_from_file(File.expand_path("../../../.env", __FILE__))
  read_env_from_file('.env')

  opts = OptionParser.new do |opts|
    opts.banner = "usage: #{program_name} [options] <command> [<args>]"

    opts.separator ""
    opts.separator commands_help

    opts.separator ""
    opts.separator "Options:"

    opts.on("--dnsimple-email=EMAIL", "DNSimple email address") do |v|
      Configlet[:dnsimple_email] = v
    end
    opts.on("--dnsimple-token=TOKEN", "DNSimple token") do |v|
      Configlet[:dnsimple_token] = v
    end
    opts.on("--nsone-token=TOKEN", "NSONE token") do |v|
      Configlet[:nsone_token] = v
    end
    opts.on("--domain=DOMAIN", "Domain to synchronize") do |v|
      Configlet[:domain] = v
    end
    opts.on("--monitor-frequency=FREQUENCY", "Frequency to check DNSimple for updates") do |v|
      Configlet[:monitor_frequency] = v
    end
    opts.on("--status-port=PORT", "Port to run status HTTP server on") do |v|
      Configlet[:status_port] = v
    end
    opts.on("--status-grace-period=PERIOD", "Number of failed updates before reporting an error") do |v|
      Configlet[:status_grace_period] = v
    end
    opts.on("--noop", "Don't do any write operations") do |v|
      Configlet[:noop] = v.to_s
    end
    opts.on("-h", "--help", "This help message") do
      puts opts
      exit(1)
    end
  end
  @args = opts.order(@args)
  
  case command = @args.shift
  when 'dump'
    dump
  when 'diff'
    diff
  when 'sync'
    sync
  when 'monitor'
    monitor
  else
    puts "#{program_name}: '#{command}' is not a command. see '#{program_name} --help'."
    exit(1)
  end
  
  exit(0)
end

#commands_help ⇒ Object 



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# File 'lib/dnsync/cli.rb', line 90

def commands_help
  unindent(<<-EOF)
    The available commands are:
         sync         Perform a one-time synchronization from DNSimple to NSONE
         monitor      Perform continual synchronization from DNSimple to NSONE

  EOF
end

#diff ⇒ Object 



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# File 'lib/dnsync/cli.rb', line 113

def diff
  nsone = Nsone.new(Configlet[:nsone_token], Configlet[:domain])
  dnsimple = Dnsimple.new(Configlet[:dnsimple_email], 
    Configlet[:dnsimple_token], Configlet[:domain])
  
  diff = ZoneDifference.new(nsone.zone, dnsimple.zone,
    %w(NS SOA))

  puts " ---- added ---- "
  pp diff.added
  
  puts " ---- removed ---- "
  pp diff.removed
  
  puts " ---- changed ---- "
  pp diff.changed
end

#dump ⇒ Object 



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# File 'lib/dnsync/cli.rb', line 99

def dump
  case command = @args.shift
  when 'nsone'
    nsone = Nsone.new(Configlet[:nsone_token], Configlet[:domain])
    records = nsone.zone
  else
    dnsimple = Dnsimple.new(Configlet[:dnsimple_email], 
      Configlet[:dnsimple_token], Configlet[:domain])
    records = dnsimple.zone
  end
  
  pp records
end

#monitor ⇒ Object 



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# File 'lib/dnsync/cli.rb', line 162

def monitor
  nsone = Nsone.new(Configlet[:nsone_token], Configlet[:domain])
  dnsimple = Dnsimple.new(Configlet[:dnsimple_email],
    Configlet[:dnsimple_token], Configlet[:domain])

  updater = RecurringZoneUpdater.new(dnsimple, nsone,
    Configlet[:monitor_frequency] || 10,
    Configlet[:status_grace_period] || 5)
  updater.start

  if status_port = Configlet[:status_port]
    puts "Starting status server on #{status_port}"
    status = HttpStatus.new(status_port, updater)
    status.start
  end

  rd, wr = IO.pipe
  Thread.new do
    # Wait for a signal
    rd.read(1)
    updater.stop

    if status
      status.stop
    end
  end

  %w(QUIT HUP INT TERM).each do |sig|
    Signal.trap(sig) { wr.write('x') }
  end

  updater.join
  if status
    status.join
  end
end

#sync ⇒ Object 



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# File 'lib/dnsync/cli.rb', line 131

def sync
  nsone = Nsone.new(Configlet[:nsone_token], Configlet[:domain])
  dnsimple = Dnsimple.new(Configlet[:dnsimple_email],
    Configlet[:dnsimple_token], Configlet[:domain])

  nsone_zone, dnsimple_zone = nil

  Scrolls.log(:zone => Configlet[:domain], :from => :nsone) do
    nsone_zone = nsone.zone
  end

  Scrolls.log(:zone => Configlet[:domain], :from => :dnsimple) do
    dnsimple_zone = dnsimple.zone
  end

  diff = ZoneDifference.new(nsone_zone, dnsimple_zone,
    %w(NS SOA))

  if Configlet[:noop]
    puts "Would be: Adding: #{diff.added.length} Updating: #{diff.changed.length} Removing: #{diff.removed.length}"
  else
    updater = ZoneUpdater.new(diff, nsone)

    Scrolls.log(:zone => Configlet[:domain], :action => :updating, :to => :nsone,
      :adding => diff.added.length, :updating => diff.changed.length,
      :removing => diff.removed.length) do
      updater.call
    end
  end
end