Why #Scheduled is not working in Spring Boot? - spring

Question

I am trying to add scheduled job to my application.
I have created bean that has method annotated with #Scheduled. Also I have added #EnableScheduling to my ApplicationConfig class.
But it doesn't work. My application does not start as it starts usually, and the application port does not open, and there is no stacktrace with errors.
Logs end with
INFO o.s.s.c.ThreadPoolTaskScheduler [] : Initializing ExecutorService 'taskScheduler'
but not as usual with
Started MyApp in 11.136 seconds
Code:
#Configuration
#EnableAsync
#EnableScheduling
public class ApplicationConfig implements AsyncConfigurer {
#Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return new CustomAsyncExceptionHandler();
}
#Bean(name = "publisherPoolTaskExecutor")
public Executor publishPoolTaskExecutor() {
final ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(corePoolSize);
executor.setMaxPoolSize(maxPoolSize);
executor.setQueueCapacity(queueCapacity);
executor.setThreadNamePrefix("publisher-");
executor.initialize();
return executor;
}
#Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}
#Component
public class JobService {
private static final Logger log = LoggerFactory.getLogger(JobService.class);
#Scheduled(fixedDelay = 60000L)
public void doWork() {
log.info("Working...");
}
}
Async is not used in my scheduler, it's for other purpose.
Logs that appear at the end
2022-08-08 16:43:35.112 [scheduling-1] INFO o.hibernate.jpa.internal.util.LogHelper [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HHH000204: Processing PersistenceUnitInfo [name: default]
2022-08-08 16:43:35.155 [scheduling-1] INFO org.hibernate.Version [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HHH000412: Hibernate ORM core version 5.4.15.Final
2022-08-08 16:43:35.267 [scheduling-1] INFO o.hibernate.annotations.common.Version [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2022-08-08 16:43:35.347 [scheduling-1] INFO com.zaxxer.hikari.HikariDataSource [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HikariPool-1 - Starting...
2022-08-08 16:43:35.389 [scheduling-1] INFO com.zaxxer.hikari.HikariDataSource [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HikariPool-1 - Start completed.
2022-08-08 16:43:35.406 [scheduling-1] INFO org.hibernate.dialect.Dialect [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2022-08-08 16:43:35.572 [scheduling-1] WARN org.hibernate.cfg.AnnotationBinder [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HHH000457: Joined inheritance hierarchy [com.xxx.MyEntity] defined explicit #DiscriminatorColumn. Legacy Hibernate behavior was to ignore the #DiscriminatorColumn. However, as part of issue HHH-6911 we now apply the explicit #DiscriminatorColumn. If you would prefer the legacy behavior, enable the `hibernate.discriminator.ignore_explicit_for_joined` setting (hibernate.discriminator.ignore_explicit_for_joined=true)
2022-08-08 16:43:36.131 [scheduling-1] INFO o.h.e.t.j.p.i.JtaPlatformInitiator [traceId=40196fb09b21f5ba, spanId=40196fb09b21f5ba, spanExportable=false, X-Span-Export=false, X-B3-SpanId=40196fb09b21f5ba, X-B3-TraceId=40196fb09b21f5ba] : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
Code of the AsyncUncaughtExceptionHandler:
public class CustomAsyncExceptionHandler implements AsyncUncaughtExceptionHandler {
private static final Logger log = LoggerFactory.getLogger(CustomAsyncExceptionHandler.class);
#Override
public void handleUncaughtException(
#NonNull Throwable ex,
Method method,
#NonNull Object... params) {
log.error(
String.format(
"Error while executing async method [%s] with parameters [%s]: %s",
method.getName(),
Stream.of(params).map(Object::toString).collect(joining(",")),
ex.getMessage()
),
ex
);
}
}

Answer 1

I have implemented SchedulingConfigurer in my config and it works for me.
Example of configuration:
#Configuration
#EnableScheduling
public class SchedulingConfig implements SchedulingConfigurer {
#Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
taskRegistrar.setScheduler(taskScheduler());
}
#Bean
public Executor taskScheduler() {
ThreadPoolTaskScheduler t = new ThreadPoolTaskScheduler();
t.setPoolSize(1);
t.setThreadNamePrefix("scheduler - ");
t.initialize();
return t;
}
}