Package org.somda.sdc.glue.consumer

Class SdcRemoteDeviceWatchdog

java.lang.Object
com.google.common.util.concurrent.AbstractIdleService
org.somda.sdc.glue.consumer.SdcRemoteDeviceWatchdog
All Implemented Interfaces:
com.google.common.util.concurrent.Service
public class SdcRemoteDeviceWatchdog extends com.google.common.util.concurrent.AbstractIdleService
Sends WS-Eventing Renew or DirectedProbe requests and informs in case of an error.

SdcRemoteDeviceWatchdog is a Guava service that requests a remote device in a given periodicity once started.

  • If at least one subscription exists, SdcRemoteDeviceWatchdog tries to renew this subscription in order to check if the remote device is still reachable.
  • If multiple subscriptions exist, all are renewed.
  • If no subscription exists, SdcRemoteDeviceWatchdog sends a directed probe.
The automatic renew spares enabling auto-renew for subscriptions. The requested expires value for Subscribe requests is ConsumerConfig#WATCHDOG_PERIOD * 3.

Watchdog events are distributed only if the service is running.

See Also:

  • Nested Class Summary

    Nested classes/interfaces inherited from interface com.google.common.util.concurrent.Service

    com.google.common.util.concurrent.Service.Listener, com.google.common.util.concurrent.Service.State

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    registerObserver(WatchdogObserver watchdogObserver)
    Registers a watchdog observer.
    protected void
    shutDown()
     
    protected void
    startUp()
     
    void
    unregisterObserver(WatchdogObserver watchdogObserver)
    Unregisters a watchdog observer.

    Methods inherited from class com.google.common.util.concurrent.AbstractIdleService

    addListener, awaitRunning, awaitRunning, awaitRunning, awaitTerminated, awaitTerminated, awaitTerminated, executor, failureCause, isRunning, serviceName, startAsync, state, stopAsync, toString

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Method Details

    • registerObserver

      public void registerObserver(WatchdogObserver watchdogObserver)
      Registers a watchdog observer.
      Parameters:
      watchdogObserver - the watchdog observer.

    • unregisterObserver

      public void unregisterObserver(WatchdogObserver watchdogObserver)
      Unregisters a watchdog observer.
      Parameters:
      watchdogObserver - the watchdog observer.

    • startUp

      protected void startUp()
      Specified by:
      startUp in class com.google.common.util.concurrent.AbstractIdleService

    • shutDown

      protected void shutDown()
      Specified by:
      shutDown in class com.google.common.util.concurrent.AbstractIdleService