Examples of com.google.common.util.concurrent.ServiceManager.addListener()

• com.google.common.util.concurrent.ServiceManager.addListener()
  Registers a {@link Listener} to be {@linkplain Executor#execute executed} on the given executor. The listener will not have previous state changes replayed, so it is suggested that listeners are added before any of the managed services are {@linkplain Service#start started}.

  There is no guaranteed ordering of execution of listeners, but any listener added through this method is guaranteed to be called whenever there is a state change.

  Exceptions thrown by a listener will be propagated up to the executor. Any exception thrown during {@code Executor.execute} (e.g., a {@code RejectedExecutionException} or an exception thrown by {@linkplain MoreExecutors#sameThreadExecutor inline execution}) will be caught and logged.

  For fast, lightweight listeners that would be safe to execute in any thread, consider calling {@link #addListener(Listener)}. @param listener the listener to run when the manager changes state @param executor the executor in which the listeners callback methods will be run.