Spring引导关闭钩半路终止

Question

我已经将ShutDownHook添加到我的Spring Boot应用程序中。当我将SIGTERM传递给我的应用程序时，shutdown钩子被触发，但它在中途终止，即在执行过程中终止。谷歌了它，尝试了很多解决方案，但都不起作用。一些专家，请帮我一下。

ConfigurableApplicationContext applicationContext = new SpringApplicationBuilder(MyApp.class)
            .profiles("default")
            .registerShutdownHook(false)
            .build()
            .run(args);
    Runtime.getRuntime().addShutdownHook(new Thread(new GracefulShutdownHook(applicationContext)));

GracefulShutdownHook类：

public class GracefulShutdownHook implements Runnable {
    private final ConfigurableApplicationContext applicationContext;

    public GracefulShutdownHook(ConfigurableApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }

    public void run() {
        try {
            log.info("Gonna wait for 5 seconds before shutdown SpringContext!");
            Thread.sleep(5 * 1000);
            log.info("Spring Application context starting to shutdown");
            applicationContext.close();
            log.info("Spring Application context is shutdown");
        } catch (InterruptedException e) {
            log.error("Error while gracefulshutdown Thread.sleep", e);
        }
    }
}

我想让关机钩子更新一些缓存和一些逻辑，这会消耗一些额外的处理时间。

当我尝试使用“杀戮-15”杀戮时的日志：

Apr 13 10:08:22 ssed java[14354]: 2018-04-13T10:08:22,778 INFO  [c.o.GracefulShutdownHook] -- Gonna wait for 10 seconds before shutdown SpringContext!

Apr 12 15:24:51 vm33 systemd[1]: Stopping Session Application Service...
Apr 12 15:24:51 vm33 java[29538]: 2018-04-12T15:24:51,421 INFO  [c.o.GracefulShutdownHook] -- Gonna wait for 10 seconds before shutdown SpringContext!
Apr 12 15:25:01 vm33 systemd[1]: Stopped Session Application Service.

Answer 1

您可以添加以下代码在关机时执行操作：

@RestController
@Slf4j
public class GetDataController {

  //your code

  @PreDestroy
  public void onExit() {
    log.info("###STOPing controller ##");
    try {
      Thread.sleep(5 * 1000);
    } catch (InterruptedException e) {
      log.error("", e);;
    }
    log.info("###STOP FROM THE LIFECYCLE controller###");
  }
}

@RestController可以是其他类型的，如@Component、@SpringBootApplication等等。