Class: Murakumo::Balancer

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

Instance Method Summary collapse

Constructor Details

#initialize(hash, address, db, logger) ⇒ Balancer

Returns a new instance of Balancer.



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# File 'lib/srv/murakumo_balancer.rb', line 7

def initialize(hash, address, db, logger)
  @hash = hash
  @address = address
  @db = db
  @logger = logger
end

Instance Method Details

#sort(records, max_ip_num, name) ⇒ Object 



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# File 'lib/srv/murakumo_balancer.rb', line 14

def sort(records, max_ip_num, name)
  # ハッシュが空ならランダムで
  if @hash.nil? or @hash.empty?
    return random(records, max_ip_num)
  end

  # 宛先を検索
  dest, attrs = @hash.find {|k, v| k =~ name }

  if dest.nil? or attrs.nil?
    # 設定が見つからない場合はとりあえずランダムで
    return random(records, max_ip_num)
  end

  algo = attrs[:algorithm]
  max_ip_num = [(attrs[:max_ip_num] || max_ip_num), records.length].min
  sources = attrs[:sources]

  case algo
  when :random
    random(records, max_ip_num)
  when :fix_by_src
    fix_by_src(records, max_ip_num, sources)
  when :fix_by_src2
    fix_by_src2(records, max_ip_num, sources)
  else
    # 未対応のアルゴリズムの場合はとりあえずランダムで返す
    @logger.warn("distribution setup which is not right: #{[dest, algo].inspect}")
    random(records, max_ip_num)
  end
end