groovyx.gpars.dataflow.operator.component
Interface OperatorStateMonitor

All Known Implementing Classes:

GracefulShutdownMonitor

public interface OperatorStateMonitor

Used by GracefulShutdownListeners. Not intended for public use.

Author:

Vaclav Pech

Method Summary

void	registerProcessorListener(GracefulShutdownListener listener) Invoked by GracefulShutdownListeners, which listen on operators/selectors for lifecycle events, to get registered with the monitor.
void	stateChanged() Invoked whenever a processor changes state

Method Detail

stateChanged

void stateChanged()

Invoked whenever a processor changes state

registerProcessorListener

void registerProcessorListener(GracefulShutdownListener listener)

Invoked by GracefulShutdownListeners, which listen on operators/selectors for lifecycle events, to get registered with the monitor. The monitor will query these registered listeners about their respective operator/selector state when performing graceful shutdown.

Parameters:

listener - The listener to register