zope-processlifetime

import os from zope.processlifetime import registerProcessSubscriber, IProcessStarting, IProcessInitialized, IProcessStopping from zope.interface import implementer import zope.event # Required for dispatching events # Define handler functions that will react to events def handle_startup(event): print("Process starting event received!") # Typically, you would initialize resources here assert isinstance(event, IProcessStarting) def handle_initialized(event): print("Process initialized event received!") # Typically, you would confirm readiness or start background tasks here assert isinstance(event, IProcessInitialized) def handle_stopping(event): print("Process stopping event received!") # Typically, you would clean up resources or save state here assert isinstance(event, IProcessStopping) # Register the handler functions for the respective lifecycle interfaces registerProcessSubscriber(handle_startup, IProcessStarting) registerProcessSubscriber(handle_initialized, IProcessInitialized) registerProcessSubscriber(handle_stopping, IProcessStopping) print("Subscribers registered. Now simulating event dispatch:") # In a real Zope application, a framework or server would dispatch these events. # For demonstration, we create and notify them explicitly using zope.event. # Define simple event objects that implement the interfaces @implementer(IProcessStarting) class ProcessStartingEvent: pass @implementer(IProcessInitialized) class ProcessInitializedEvent: pass @implementer(IProcessStopping) class ProcessStoppingEvent: pass # Dispatch the events to trigger the registered handlers zope.event.notify(ProcessStartingEvent()) zope.event.notify(ProcessInitializedEvent()) zope.event.notify(ProcessStoppingEvent()) print("\nEvents dispatched. Check console output for handler messages.") # Note: os.environ.get('AUTH_KEY', '') is not relevant for this library's quickstart.