Module: RailsPodKit::Shutdown

Defined in:

lib/rails_pod_kit/shutdown.rb

Overview

Blocks the main thread of an always-on entry point until the orchestrator signals. A self-pipe rather than a Queue or a Mutex: writing to an IO is one of the few things safe to do from a trap handler.

Constant Summary

SIGNALS =

%w[INT TERM].freeze

Class Method Summary

• .await(signals: SIGNALS) ⇒ Object

Class Method Details

.await(signals: SIGNALS) ⇒ Object

# File 'lib/rails_pod_kit/shutdown.rb', line 12

def await(signals: SIGNALS)
  reader, writer = IO.pipe
  signals.each { |signal| Signal.trap(signal) { writer.puts(signal) } }
  reader.gets
end