Module: Sidekiq::LimitFetch::Global::Selector

Extended by:
Selector
Included in:
Selector
Defined in:
lib/sidekiq/limit_fetch/global/selector.rb

Constant Summary collapse

MUTEX_FOR_UUID = 
Mutex.new

Instance Method Summary collapse

Instance Method Details

#acquire(queues, namespace) ⇒ Object 



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# File 'lib/sidekiq/limit_fetch/global/selector.rb', line 11

def acquire(queues, namespace)
  redis_eval :acquire, [namespace, uuid, queues]
end

#release(queues, namespace) ⇒ Object 



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# File 'lib/sidekiq/limit_fetch/global/selector.rb', line 15

def release(queues, namespace)
  redis_eval :release, [namespace, uuid, queues]
end

#uuid ⇒ Object 



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# File 'lib/sidekiq/limit_fetch/global/selector.rb', line 19

def uuid
  # - if we'll remove "@uuid ||=" from inside of mutex
  # then @uuid can be overwritten
  # - if we'll remove "@uuid ||=" from outside of mutex
  # then each read will lead to mutex
  @uuid ||= MUTEX_FOR_UUID.synchronize { @uuid || SecureRandom.uuid }
end