1 files changed, 170 insertions, 0 deletions
diff --git a/core_common_webapp/src/main/java/at/asitplus/eidas/specific/core/SpringContextCloseHandler.java b/core_common_webapp/src/main/java/at/asitplus/eidas/specific/core/SpringContextCloseHandler.java
new file mode 100644
index 00000000..81f23841
--- /dev/null
+++ b/core_common_webapp/src/main/java/at/asitplus/eidas/specific/core/SpringContextCloseHandler.java
@@ -0,0 +1,170 @@
+package at.asitplus.eidas.specific.core;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.slf4j.Logger;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.event.ContextClosedEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
+
+import at.gv.egiz.components.spring.api.IDestroyableObject;
+import eu.eidas.auth.cache.IgniteInstanceInitializerSpecificCommunication;
+
+/**
+ * SpringContext CloseHandler.
+ *
+ * @author tlenz
+ *
+ */
+
+public class SpringContextCloseHandler
+    implements ApplicationListener<ContextClosedEvent>, ApplicationContextAware, BeanPostProcessor {
+
+  private static final Logger log =
+      org.slf4j.LoggerFactory.getLogger(SpringContextCloseHandler.class);
+
+  private ApplicationContext context;
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see org.springframework.context.ApplicationListener#onApplicationEvent(org.
+   * springframework.context. ApplicationEvent)
+   */
+  @Override
+  @EventListener
+  public void onApplicationEvent(final ContextClosedEvent arg0) {
+    log.info("MS-specific eIDAS-Node shutdown process started ...");
+
+    try {
+      log.debug("CleanUp objects with implements the IDestroyable interface ... ");
+      final Map<String, IDestroyableObject> objectsToDestroy =
+          context.getBeansOfType(IDestroyableObject.class);
+      internalIDestroyableObject(objectsToDestroy);
+      log.info("Object cleanUp complete");
+
+      log.debug("Stopping Spring Thread-Pools ... ");
+      // shut-down task schedulers
+      final Map<String, ThreadPoolTaskScheduler> schedulers =
+          context.getBeansOfType(ThreadPoolTaskScheduler.class);
+      internalThreadPoolTaskScheduler(schedulers);
+
+      // shut-down task executors
+      final Map<String, ThreadPoolTaskExecutor> executers =
+          context.getBeansOfType(ThreadPoolTaskExecutor.class);
+      internalThreadPoolTaskExecutor(executers);
+      log.debug("Spring Thread-Pools stopped");
+      
+      
+      //clean-up eIDAS node
+      Map<String, IgniteInstanceInitializerSpecificCommunication> nodeIgnite = 
+          context.getBeansOfType(IgniteInstanceInitializerSpecificCommunication.class);
+      log.info("Find #{} Apache Ignite instances from eIDAS Ref. impl.", nodeIgnite.size());
+      for (Entry<String, IgniteInstanceInitializerSpecificCommunication> el : nodeIgnite.entrySet()) {
+        if (el.getValue().getInstance() != null) {
+          el.getValue().getInstance().close();
+          el.getValue().destroyInstance();
+          log.debug("Shutdown Apache-Ignite: {}", el.getKey());
+          
+        }        
+      }
+            
+      log.info("MS-specific eIDAS-Node shutdown process finished");
+
+    } catch (final Exception e) {
+      log.warn("MS-specific eIDAS-Node shutdown process has an error.", e);
+
+    }
+
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see org.springframework.beans.factory.config.BeanPostProcessor#
+   * postProcessAfterInitialization(java. lang.Object, java.lang.String)
+   */
+  @Override
+  public Object postProcessAfterInitialization(final Object arg0, final String arg1)
+      throws BeansException {
+    if (arg0 instanceof ThreadPoolTaskScheduler) {
+      ((ThreadPoolTaskScheduler) arg0).setWaitForTasksToCompleteOnShutdown(true);
+    }
+    if (arg0 instanceof ThreadPoolTaskExecutor) {
+      ((ThreadPoolTaskExecutor) arg0).setWaitForTasksToCompleteOnShutdown(true);
+    }
+    return arg0;
+
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see org.springframework.beans.factory.config.BeanPostProcessor#
+   * postProcessBeforeInitialization(java .lang.Object, java.lang.String)
+   */
+  @Override
+  public Object postProcessBeforeInitialization(final Object arg0, final String arg1)
+      throws BeansException {
+    return arg0;
+
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * org.springframework.context.ApplicationContextAware#setApplicationContext(org
+   * .springframework. context.ApplicationContext)
+   */
+  @Override
+  public void setApplicationContext(final ApplicationContext arg0) throws BeansException {
+    this.context = arg0;
+
+  }
+
+  private void internalThreadPoolTaskExecutor(final Map<String, ThreadPoolTaskExecutor> executers) {
+    for (final ThreadPoolTaskExecutor executor : executers.values()) {
+      executor.shutdown();
+      log.debug("Executer {} with active {} work has killed", executor.getThreadNamePrefix(),
+          executor.getActiveCount());
+
+    }
+
+  }
+
+  // Not required at the moment
+  private void internalThreadPoolTaskScheduler(
+      final Map<String, ThreadPoolTaskScheduler> schedulers) {
+    log.trace("Stopping #{} task-schedulers", schedulers.size());
+    
+  }
+
+  private void internalIDestroyableObject(final Map<String, IDestroyableObject> objectsToDestroy) {
+    if (objectsToDestroy != null) {
+      final Iterator<Entry<String, IDestroyableObject>> interator =
+          objectsToDestroy.entrySet().iterator();
+      while (interator.hasNext()) {
+        final Entry<String, IDestroyableObject> object = interator.next();
+        try {
+          object.getValue().fullyDestroy();
+          log.debug("Object with ID: {} is destroyed", object.getKey());
+
+        } catch (final Exception e) {
+          log.warn("Destroing object with ID: {} FAILED!", object.getKey(), null, e);
+
+        }
+      }
+    }
+
+  }
+
+}