feat: add DelegatingSecurityContextAsyncTaskExecutor

src/main/java/de/caritas/cob/messageservice/config/AppConfig.java

@@ -5,6 +5,9 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.task.TaskExecutor;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+import org.springframework.security.task.DelegatingSecurityContextAsyncTaskExecutor;
 import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
 import org.springframework.web.client.RestTemplate;
 
@@ -34,4 +37,20 @@ public LocalValidatorFactoryBean validator(MessageSource messageSource) {
   public RestTemplate restTemplate(RestTemplateBuilder builder) {
     return builder.build();
   }
+
+  @Bean
+  public TaskExecutor taskExecutor() {
+    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+    executor.setCorePoolSize(10);
+    executor.setMaxPoolSize(15);
+    executor.setThreadNamePrefix("default_task_executor_thread");
+    executor.initialize();
+
+    return executor;
+  }
+
+  @Bean
+  public DelegatingSecurityContextAsyncTaskExecutor taskExecutor(ThreadPoolTaskExecutor delegate) {
+    return new DelegatingSecurityContextAsyncTaskExecutor(delegate);
+  }
 }