fix issue with threads that are not terminated after the run

hawk/src/main/java/io/irw/launcher/Launcher.java

@@ -1,10 +1,8 @@
 package io.irw.launcher;
 
 import io.irw.hawk.HawkApp;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
@@ -15,25 +13,23 @@ public class Launcher {
 
  public static void main(String[] args) {
  try (ExecutorService executorService = Executors.newCachedThreadPool()) {
- // Start the Spring Boot application in a separate thread
- Future<ConfigurableApplicationContext> future = executorService.submit(() -> {
- return SpringApplication.run(HawkApp.class, args);
- });
 
- // Get the application context from the future and manage its lifecycle
- ConfigurableApplicationContext hawkAppContext = future.get();
- // Perform any necessary operations with hawkAppContext
+ // Start the first Spring Boot application in a separate thread
+ executorService.submit(() -> {
+ ConfigurableApplicationContext hawkAppContext = SpringApplication.run(HawkApp.class, args);
+ hawkAppContext.close();
+ });
 
- // Close the application context gracefully
- Runtime.getRuntime()
- .addShutdownHook(new Thread(hawkAppContext::close));
- } catch (InterruptedException e) {
- Thread.currentThread()
- .interrupt(); // Preserve interrupt status
- throw new RuntimeException("Thread interrupted", e);
- } catch (ExecutionException e) {
- throw new RuntimeException("Execution exception in application startup", e);
+ // Shutdown the executor service gracefully when both applications are done
+ executorService.shutdown();
+ try {
+ executorService.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
+ } catch (InterruptedException e) {
+ Thread.currentThread()
+ .interrupt();
+ }
  }
  }
-}
 
+
+}