refactor metadataprovider to Spring implementation

2 files changed, 169 insertions, 0 deletions

diff --git a/id/server/moa-id-spring-initializer/src/main/java/at/gv/egovernment/moa/id/auth/MOAContextCloseHandler.java b/id/server/moa-id-spring-initializer/src/main/java/at/gv/egovernment/moa/id/auth/MOAContextCloseHandler.java
new file mode 100644
index 000000000..f99013082
--- /dev/null
+++ b/id/server/moa-id-spring-initializer/src/main/java/at/gv/egovernment/moa/id/auth/MOAContextCloseHandler.java
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2014 Federal Chancellery Austria
+ * MOA-ID has been developed in a cooperation between BRZ, the Federal
+ * Chancellery Austria - ICT staff unit, and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+package at.gv.egovernment.moa.id.auth;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.concurrent.TimeUnit;
+
+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.scheduling.concurrent.ThreadPoolTaskExecutor;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
+import org.springframework.stereotype.Component;
+
+import at.gv.egovernment.moa.logging.Logger;
+
+/**
+ * @author tlenz
+ *
+ */
+@Component
+public class MOAContextCloseHandler implements ApplicationListener<ContextClosedEvent>, ApplicationContextAware, BeanPostProcessor {
+
+	private ApplicationContext context;
+	
+	/* (non-Javadoc)
+	 * @see org.springframework.context.ApplicationListener#onApplicationEvent(org.springframework.context.ApplicationEvent)
+	 */
+	@Override
+	public void onApplicationEvent(ContextClosedEvent arg0) {
+		Logger.info("MOA-ID-Auth shutdown process started ...");		
+		
+		try {			
+			Logger.debug("CleanUp objects with implements the IDestroyable interface ... ");
+			Map<String, IDestroyableObject> objectsToDestroy = context.getBeansOfType(IDestroyableObject.class);
+			if (objectsToDestroy != null) {
+				Iterator<Entry<String, IDestroyableObject>> interator = 
+						objectsToDestroy.entrySet().iterator();				
+				while (interator.hasNext()) {
+					Entry<String, IDestroyableObject> object = interator.next();
+					try {
+						object.getValue().fullyDestroy();
+						Logger.debug("Object with ID:" + object.getKey() + " is destroyed");
+						
+					} catch (Exception e) {
+						Logger.warn("Destroing object with ID:" + object.getKey() + " FAILED!", e);
+						
+					}										
+				}				
+			}						
+			Logger.info("Object cleanUp complete");
+					
+			Logger.debug("Stopping Spring Thread-Pools ... ");		
+			//shut-down task schedulers
+			Map<String, ThreadPoolTaskScheduler> schedulers = context.getBeansOfType(ThreadPoolTaskScheduler.class);
+		    for (ThreadPoolTaskScheduler scheduler : schedulers.values()) {         
+		        scheduler.getScheduledExecutor().shutdown();
+		        try {
+		            scheduler.getScheduledExecutor().awaitTermination(20000, TimeUnit.MILLISECONDS);
+		            if(scheduler.getScheduledExecutor().isTerminated() || scheduler.getScheduledExecutor().isShutdown())
+		                Logger.debug("Scheduler "+scheduler.getThreadNamePrefix() + " has stoped");
+		            else{
+		            	Logger.debug("Scheduler "+scheduler.getThreadNamePrefix() + " has not stoped normally and will be shut down immediately");
+		                scheduler.getScheduledExecutor().shutdownNow();
+		                Logger.info("Scheduler "+scheduler.getThreadNamePrefix() + " has shut down immediately");
+		            }
+		        } catch (IllegalStateException e) {
+		            e.printStackTrace();
+		        } catch (InterruptedException e) {
+		            e.printStackTrace();
+		            
+		        } finally {
+					scheduler.shutdown();
+		        	
+				}
+		    }
+			
+		  //shut-down task executors
+		    Map<String, ThreadPoolTaskExecutor> executers = context.getBeansOfType(ThreadPoolTaskExecutor.class);
+		    for (ThreadPoolTaskExecutor executor: executers.values()) {
+		        int retryCount = 0;
+		        while(executor.getActiveCount()>0 && ++retryCount<51){
+		            try {
+		            	Logger.debug("Executer "+executor.getThreadNamePrefix()+" is still working with active " + executor.getActiveCount()+" work. Retry count is "+retryCount);
+		                Thread.sleep(1000);
+		            } catch (InterruptedException e) {
+		                e.printStackTrace();
+		            }
+		        }
+		        if(!(retryCount<51))
+		        	Logger.debug("Executer "+executor.getThreadNamePrefix()+" is still working.Since Retry count exceeded max value "+retryCount+", will be killed immediately");
+		        executor.shutdown();
+		        Logger.debug("Executer "+executor.getThreadNamePrefix()+" with active " + executor.getActiveCount()+" work has killed");
+		    }
+			
+			Logger.debug("Spring Thread-Pools stopped");
+			
+			Logger.info("MOA-ID-Auth shutdown process finished");
+			
+		} catch (Exception e) {
+			Logger.warn("MOA-ID-Auth shutdown process has an error.", e);
+			
+		}
+		
+		//System.exit(0);
+		//Thread.currentThread().interrupt();		
+		
+	}
+
+	/* (non-Javadoc)
+	 * @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessAfterInitialization(java.lang.Object, java.lang.String)
+	 */
+	@Override
+	public Object postProcessAfterInitialization(Object arg0, 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(Object arg0, String arg1) throws BeansException {
+		return arg0;
+		
+	}
+
+	/* (non-Javadoc)
+	 * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext)
+	 */
+	@Override
+	public void setApplicationContext(ApplicationContext arg0) throws BeansException {
+		this.context = arg0;
+		
+	}
+
+}
diff --git a/id/server/moa-id-spring-initializer/src/main/resources/applicationContext.xml b/id/server/moa-id-spring-initializer/src/main/resources/applicationContext.xml
index ae38c836e..2c53d55b9 100644
--- a/id/server/moa-id-spring-initializer/src/main/resources/applicationContext.xml
+++ b/id/server/moa-id-spring-initializer/src/main/resources/applicationContext.xml
@@ -27,5 +27,8 @@
   	<bean class="at.gv.egovernment.moa.id.auth.servlet.interceptor.UniqueSessionIdentifierInterceptor" />
   </mvc:interceptors> 
 
+	<bean id="MOAIDContextCloseHandler" 
+	      class="at.gv.egovernment.moa.id.auth.MOAContextCloseHandler"/>
+	
 	
 </beans>