Module: Agent::UUID

Defined in:
lib/agent/uuid.rb

Constant Summary collapse

PREFIX = 
"#{values[1]}_#{values[2]}_4#{values[3]}_8#{values[4]}".freeze
BLOCK_SIZE = 
0x10000

Class Method Summary collapse

Class Method Details

.generate ⇒ Object 



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# File 'lib/agent/uuid.rb', line 14

def self.generate
  thread = Thread.current

  unless thread[:__agent_uuid_limit__]
    @counter_mutex.synchronize do
      block_base = @counter
      @counter += BLOCK_SIZE
      thread[:__agent_uuid_counter__] = block_base
      thread[:__agent_uuid_limit__]   = @counter - 1
    end
  end

  counter = thread[:__agent_uuid_counter__]
  if thread[:__agent_uuid_counter__] >= thread[:__agent_uuid_limit__]
    thread[:__agent_uuid_counter__] = thread[:__agent_uuid_limit__] = nil
  else
    thread[:__agent_uuid_counter__] += 1
  end

  "#{PREFIX}_#{sprintf("%012x", counter)}".freeze
end