Class: Reconciler

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

Instance Method Summary collapse

Constructor Details

#initialize(zone, ip, existing, desired, setup = {}) ⇒ Reconciler

Returns a new instance of Reconciler.



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# File 'lib/reconciler.rb', line 2

def initialize(zone, ip, existing, desired, setup={})
  @zone, @ip, @existing, @desired, @setup = zone, ip, existing, desired, setup
end

Instance Method Details

#cru_by_data(type, name, keepers, desired) ⇒ Object

MX, SRV, TXT



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# File 'lib/reconciler.rb', line 158

def cru_by_data(type, name, keepers, desired)
  type = type.to_s.upcase
  
  keepers.each do |r|
    unless r.aux == desired[r.data]
      log "> changing record: #{type} #{r.name} #{r.data} from #{r.aux} to #{desired[r.data]}"
      r.aux = desired[r.data]
      r.save
    end
    desired.delete(r.data)
  end
  
  desired.each_pair do |data, aux|
    log "> creating record: #{type} #{name} (#{data} / #{aux})"
    r = @zone.new_record(:record_type => type, :name => name, :data => data, :aux => aux)
    r.save
  end
  
end

#crud_by_name(type, records, desired) ⇒ Object

A, CNAME



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# File 'lib/reconciler.rb', line 132

def crud_by_name(type, records, desired)
  type = type.to_s.upcase
  records.each do |record|
    if desired[record.name] == record.data
      desired.delete(record.name)
      
    elsif desired.has_key?(record.name)
      log "> changing record: #{type} #{record.name} from #{record.data} to #{desired[record.name]}"
      record.data = desired[record.name]
      desired.delete(record.name)
      record.save
      
    else
      log "> removing record: #{type} #{record.name} (#{record.data})"
      record.destroy
    end
  end
  (desired || {}).each_pair do |name, data|
    log "> creating record: #{type} #{name} (#{data})"
    record = @zone.new_record(:record_type => type, :name => name, :data => data)
    record.save
  end
  
end

#destroy_records(records = []) ⇒ Object 



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# File 'lib/reconciler.rb', line 124

def destroy_records(records=[])
  records.each do |r|
    log "> removing record: #{r.kind} #{r.name} #{r.data}"
    r.destroy
  end
end

#log(msg, level = :info) ⇒ Object 



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# File 'lib/reconciler.rb', line 6

def log(msg, level=:info)
  $LOG.send(level, msg) if $LOG
end

#process! ⇒ Object 



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# File 'lib/reconciler.rb', line 10

def process!
  process_a_records
  process_cname_records
  process_mx_records
  process_srv_records
  process_txt_records
  process_ns_records
end

#process_a_records ⇒ Object 



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# File 'lib/reconciler.rb', line 19

def process_a_records
  a_records = @existing.select {|r| r.a? }
  
  desired = @desired['a'] ||= {}
  desired[@zone.origin] = 'this'
  desired['*'] ||= 'this'
  desired.each_pair {|k,v| desired[k] = @ip if v == "this" }
  
  crud_by_name(:a, a_records, desired)
end

#process_cname_records ⇒ Object 



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# File 'lib/reconciler.rb', line 30

def process_cname_records
  cnames = @existing.select {|r| r.cname? }
  desired = @desired['cname'] || {}
  crud_by_name(:cname, cnames, desired)
end

#process_mx_records ⇒ Object 



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# File 'lib/reconciler.rb', line 51

def process_mx_records
  mx = @existing.select {|r| r.mx? }
  desired = @desired['mx'] || {}
  
  if @desired['goog']
    desired = {
      'aspmx.l.google.com.' => 1, 'alt1.aspmx.l.google.com.' => 5, 'alt2.aspmx.l.google.com.' => 5, 
      'aspmx2.googlemail.com.' => 10, 'aspmx3.googlemail.com.' => 10, 'aspmx4.googlemail.com.' => 10,
      'aspmx5.googlemail.com.' => 10
    }
  end
  
  if desired.kind_of?(String)
    desired = {desired => 5}
  end
    
  keepers = mx.select {|r| desired.has_key?(r.data) }
  
  cru_by_data :mx, @zone.origin, keepers, desired
  
  mx -= keepers
  destroy_records mx
end

#process_ns_records ⇒ Object 



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# File 'lib/reconciler.rb', line 36

def process_ns_records
  ns = @existing.select {|r| r.ns? }
  (1..3).to_a.each do |i|
    unless ns.any? {|r| r.data == "ns#{i}.slicehost.net." }
      log "> creating NS record ns#{i}.slicehost.net."
      record = @zone.new_record(:record_type => "NS", :name => @zone.origin, :data => "ns#{i}.slicehost.net.")
      record.save
    else
      r = ns.detect {|r| r.data == "ns#{i}.slicehost.net." }
      ns.delete(r)
    end
  end
  destroy_records ns
end

#process_srv_records ⇒ Object 



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# File 'lib/reconciler.rb', line 75

def process_srv_records
  srv = @existing.select {|r| r.srv? }
  desired = @desired['srv'] || {}
  
  if @desired['goog'] && @desired['goog'] != 'mail'
    desired.update({ 
      "_xmpp-server._tcp.#{@zone.origin}" => {
        '0 5269 xmpp-server.l.google.com.' => 5, '0 5269 xmpp-server1.l.google.com.' => 20,
        '0 5269 xmpp-server2.l.google.com.' => 20, '0 5269 xmpp-server3.l.google.com.' => 20,
        '0 5269 xmpp-server4.l.google.com.' => 20
      },
      "_jabber._tcp.#{@zone.origin}" => {
        '0 5269 xmpp-server.l.google.com.' => 5, '0 5269 xmpp-server1.l.google.com.' => 20,
        '0 5269 xmpp-server2.l.google.com.' => 20, '0 5269 xmpp-server3.l.google.com.' => 20,
        '0 5269 xmpp-server4.l.google.com.' => 20
      },
      "_xmpp-client._tcp.#{@zone.origin}" => {
        '0 5222 talk.l.google.com.' => 5, '0 5222 talk1.l.google.com.' => 20, 
        '0 5222 talk2.l.google.com.' => 20
      }
    })
  end
  
  desired.each_pair do |name, data_aux_pairs|
    keepers = srv.select {|r| r.name == name }.select {|r| data_aux_pairs.has_key?(r.data) }
    srv -= keepers
    cru_by_data(:srv, name, keepers, data_aux_pairs)
  end
  
  destroy_records srv
end

#process_txt_records ⇒ Object 



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# File 'lib/reconciler.rb', line 107

def process_txt_records
  txt = @existing.select {|r| r.txt? }
  desired = @desired['txt'] || []

  if @desired['goog'] && ! desired.any? {|t| t.match(/^v=spf1/)}
    desired << "v=spf1 include:aspmx.googlemail.com ~all"
  end

  desired = desired.inject({}) {|memo, value| memo.update({value => 0}) }
  
  keepers = txt.select {|r| desired.include?(r.data) }
  txt -= keepers
  cru_by_data(:txt, @zone.origin, keepers, desired)
  
  destroy_records txt
end