Module: Unicorn::WorkerKiller::MaxRequests

Defined in:
lib/unicorn/worker_killer.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.new(app, max_requests_min = 3072, max_requests_max = 4096, verbose = false) ⇒ Object

Killing the process must be occurred at the outside of the request. We’re using similar techniques used by OobGC, to ensure actual killing doesn’t affect the request.

See Also:



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# File 'lib/unicorn/worker_killer.rb', line 77

def self.new(app, max_requests_min = 3072, max_requests_max = 4096, verbose = false)
  ObjectSpace.each_object(Unicorn::HttpServer) do |s|
    s.extend(self)
    s.instance_variable_set(:@_worker_max_requests_min, max_requests_min)
    s.instance_variable_set(:@_worker_max_requests_max, max_requests_max)
    s.instance_variable_set(:@_verbose, verbose)
  end

  app # pretend to be Rack middleware since it was in the past
end

Instance Method Details

#process_client(client) ⇒ Object 



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# File 'lib/unicorn/worker_killer.rb', line 92

def process_client(client)
  super(client) # Unicorn::HttpServer#process_client
  return if @_worker_max_requests_min == 0 && @_worker_max_requests_max == 0

  @_worker_process_start ||= Time.now
  @_worker_cur_requests ||= @_worker_max_requests_min + randomize(@_worker_max_requests_max - @_worker_max_requests_min + 1)
  @_worker_max_requests ||= @_worker_cur_requests
  logger.info "#{self}: worker (pid: #{Process.pid}) has #{@_worker_cur_requests} left before being killed" if @_verbose

  if (@_worker_cur_requests -= 1) <= 0
    logger.warn "#{self}: worker (pid: #{Process.pid}) exceeds max number of requests (limit: #{@_worker_max_requests})"
    Unicorn::WorkerKiller.kill_self(logger, @_worker_process_start)
  end
end

#randomize(integer) ⇒ Object 



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# File 'lib/unicorn/worker_killer.rb', line 88

def randomize(integer)
  RUBY_VERSION > "1.9" ? Random.rand(integer.abs) : rand(integer)
end