Module: Tina4::Shutdown

Defined in:
lib/tina4/shutdown.rb

Constant Summary collapse

DEFAULT_TIMEOUT =

seconds

30

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.in_flight_count ⇒ Object (readonly)

Returns the value of attribute in_flight_count.



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# File 'lib/tina4/shutdown.rb', line 8

def in_flight_count
  @in_flight_count
end

Class Method Details

.initiate_shutdown ⇒ Object 



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# File 'lib/tina4/shutdown.rb', line 37

def initiate_shutdown
  return if @shutting_down

  @shutting_down = true
  Tina4::Log.info("Shutdown signal received, stopping gracefully...")

  # Wait for in-flight requests with timeout
  deadline = Process.clock_gettime(Process::CLOCK_MONOTONIC) + @timeout
  @mutex.synchronize do
    while @in_flight_count > 0
      remaining = deadline - Process.clock_gettime(Process::CLOCK_MONOTONIC)
      if remaining <= 0
        Tina4::Log.warning("Shutdown timeout reached with #{@in_flight_count} requests still in flight")
        break
      end
      @in_flight_cv.wait(@mutex, remaining)
    end
  end

  # Close database connections
  if Tina4.database
    begin
      Tina4.database.close
      Tina4::Log.info("Database connections closed")
    rescue => e
      Tina4::Log.error("Error closing database: #{e.message}")
    end
  end

  Tina4::Log.info("Shutdown complete")

  # Stop the server
  @server&.shutdown if @server.respond_to?(:shutdown)
end

.setup(server: nil, timeout: nil) ⇒ Object 



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# File 'lib/tina4/shutdown.rb', line 10

def setup(server: nil, timeout: nil)
  @server = server
  @timeout = (timeout || ENV["TINA4_SHUTDOWN_TIMEOUT"] || DEFAULT_TIMEOUT).to_i
  @shutting_down = false
  @mutex = Mutex.new
  @in_flight_count = 0
  @in_flight_cv = ConditionVariable.new

  install_signal_handlers
end

.shutting_down? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tina4/shutdown.rb', line 21

def shutting_down?
  @shutting_down
end

.track_request ⇒ Object 



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# File 'lib/tina4/shutdown.rb', line 25

def track_request
  @mutex.synchronize { @in_flight_count += 1 }
  begin
    yield
  ensure
    @mutex.synchronize do
      @in_flight_count -= 1
      @in_flight_cv.broadcast if @in_flight_count <= 0
    end
  end
end