$output.java("${configuration.rootPackage}.async", "ExceptionHandlingAsyncTaskExecutor")##

$output.require("java.util.concurrent.Callable")##
$output.require("java.util.concurrent.Future")##

$output.require("org.slf4j.Logger")##
$output.require("org.slf4j.LoggerFactory")##
$output.require("org.springframework.beans.factory.DisposableBean")##
$output.require("org.springframework.beans.factory.InitializingBean")##
$output.require("org.springframework.core.task.AsyncTaskExecutor")##

/**
 * 
 * @see http://www.baeldung.com/spring-async
 *
 */
public class ExceptionHandlingAsyncTaskExecutor implements AsyncTaskExecutor,
    InitializingBean, DisposableBean {

    private final Logger log = LoggerFactory.getLogger(ExceptionHandlingAsyncTaskExecutor.class);

    private final AsyncTaskExecutor executor;

    public ExceptionHandlingAsyncTaskExecutor(AsyncTaskExecutor executor) {
        this.executor = executor;
    }

    @Override
    public void execute(Runnable task) {
        executor.execute(task);
    }

    @Override
    public void execute(Runnable task, long startTimeout) {
        executor.execute(createWrappedRunnable(task), startTimeout);
    }

    private <T> Callable<T> createCallable(final Callable<T> task) {
        return () -> {
            try {
                return task.call();
            } catch (Exception e) {
                handle(e);
                throw e;
            }
        };
    }

    private Runnable createWrappedRunnable(final Runnable task) {
        return () -> {
            try {
                task.run();
            } catch (Exception e) {
                handle(e);
            }
        };
    }

    protected void handle(Exception e) {
        log.error("Caught async exception", e);
    }

    @Override
    public Future<?> submit(Runnable task) {
        return executor.submit(createWrappedRunnable(task));
    }

    @Override
    public <T> Future<T> submit(Callable<T> task) {
        return executor.submit(createCallable(task));
    }

    @Override
    public void destroy() throws Exception {
        if (executor instanceof DisposableBean) {
            DisposableBean bean = (DisposableBean) executor;
            bean.destroy();
        }
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        if (executor instanceof InitializingBean) {
            InitializingBean bean = (InitializingBean) executor;
            bean.afterPropertiesSet();
        }
    }
}
