@ManagedOperation
 public void stopSchedulers() {
   if (logger.isDebugEnabled()) {
     logger.debug("Stopping schedulers " + (this.shutdownForced ? "(force)" : ""));
   }
   List<ExecutorService> executorServices = new ArrayList<ExecutorService>();
   Map<String, ThreadPoolTaskScheduler> schedulers =
       this.applicationContext.getBeansOfType(ThreadPoolTaskScheduler.class);
   for (Entry<String, ThreadPoolTaskScheduler> entry : schedulers.entrySet()) {
     ThreadPoolTaskScheduler scheduler = entry.getValue();
     if (logger.isInfoEnabled()) {
       logger.info("Stopping scheduler " + scheduler.getThreadNamePrefix());
     }
     ExecutorService executorService = scheduler.getScheduledExecutor();
     executorServices.add(executorService);
     doShutdownExecutorService(executorService);
   }
   waitForExecutors(executorServices);
   logger.debug("Stopped schedulers");
 }
  @Test
  @RedisAvailable
  public void testDelayerHandlerRescheduleWithRedisMessageStore() throws Exception {
    AbstractApplicationContext context =
        new ClassPathXmlApplicationContext(
            "DelayerHandlerRescheduleIntegrationTests-context.xml", this.getClass());
    MessageChannel input = context.getBean("input", MessageChannel.class);
    MessageGroupStore messageStore = context.getBean("messageStore", MessageGroupStore.class);

    String delayerMessageGroupId = DELAYER_ID + ".messageGroupId";

    messageStore.removeMessageGroup(delayerMessageGroupId);

    Message<String> message1 = MessageBuilder.withPayload("test1").build();
    input.send(message1);
    input.send(MessageBuilder.withPayload("test2").build());

    // Emulate restart and check DB state before next start
    // Interrupt taskScheduler as quickly as possible
    ThreadPoolTaskScheduler taskScheduler =
        (ThreadPoolTaskScheduler) IntegrationContextUtils.getTaskScheduler(context);
    taskScheduler.shutdown();
    taskScheduler.getScheduledExecutor().awaitTermination(10, TimeUnit.SECONDS);
    context.destroy();

    try {
      context.getBean("input", MessageChannel.class);
      fail("IllegalStateException expected");
    } catch (Exception e) {
      assertTrue(e instanceof IllegalStateException);
      assertTrue(
          e.getMessage()
              .contains("BeanFactory not initialized or already closed - call 'refresh'"));
    }

    assertEquals(1, messageStore.getMessageGroupCount());
    assertEquals(delayerMessageGroupId, messageStore.iterator().next().getGroupId());
    assertEquals(2, messageStore.messageGroupSize(delayerMessageGroupId));
    assertEquals(2, messageStore.getMessageCountForAllMessageGroups());
    MessageGroup messageGroup = messageStore.getMessageGroup(delayerMessageGroupId);
    Message<?> messageInStore = messageGroup.getMessages().iterator().next();
    Object payload = messageInStore.getPayload();

    // INT-3049
    assertTrue(payload instanceof DelayHandler.DelayedMessageWrapper);
    assertEquals(message1, ((DelayHandler.DelayedMessageWrapper) payload).getOriginal());

    context.refresh();

    PollableChannel output = context.getBean("output", PollableChannel.class);

    Message<?> message = output.receive(20000);
    assertNotNull(message);

    Object payload1 = message.getPayload();

    message = output.receive(20000);
    assertNotNull(message);
    Object payload2 = message.getPayload();
    assertNotSame(payload1, payload2);

    assertEquals(1, messageStore.getMessageGroupCount());
    assertEquals(0, messageStore.messageGroupSize(delayerMessageGroupId));

    messageStore.removeMessageGroup(delayerMessageGroupId);
  }