Module: DBLock::Locking

Included in:
DBLock
Defined in:
lib/db_lock/locking.rb

Instance Method Summary collapse

Instance Method Details

#with_lock(name, timeout = 0) ⇒ Object 



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# File 'lib/db_lock/locking.rb', line 5

def with_lock(name, timeout = 0)
  timeout = timeout.to_f # catches nil
  timeout = 0 if timeout.negative?

  raise ArgumentError, "Invalid lock name: #{name.inspect}" if name.empty?
  raise AlreadyLocked, 'Already lock in progress' if locked?

  name = generate_lock_name(name)

  if Adapter.lock(name, timeout)
    @locked = true
    yield
  else
    raise AlreadyLocked, "Unable to obtain lock '#{name}' within #{timeout} seconds" unless locked?
  end
ensure
  Adapter.release(name) if locked?
  @locked = false
end