common EGIZ code-style refactoring

1 files changed, 490 insertions, 439 deletions

diff --git a/eaaf_modules/eaaf_module_pvp2_core/src/main/java/at/gv/egiz/eaaf/modules/pvp2/impl/metadata/AbstractChainingMetadataProvider.java b/eaaf_modules/eaaf_module_pvp2_core/src/main/java/at/gv/egiz/eaaf/modules/pvp2/impl/metadata/AbstractChainingMetadataProvider.java
index 08ef26ab..ec81353a 100644
--- a/eaaf_modules/eaaf_module_pvp2_core/src/main/java/at/gv/egiz/eaaf/modules/pvp2/impl/metadata/AbstractChainingMetadataProvider.java
+++ b/eaaf_modules/eaaf_module_pvp2_core/src/main/java/at/gv/egiz/eaaf/modules/pvp2/impl/metadata/AbstractChainingMetadataProvider.java
@@ -1,29 +1,22 @@
-/*******************************************************************************
- * Copyright 2017 Graz University of Technology
- * EAAF-Core Components has been developed in a cooperation between EGIZ,  
- * A-SIT Plus, A-SIT, and Graz University of Technology.
+/*
+ * Copyright 2017 Graz University of Technology EAAF-Core Components has been developed in a
+ * cooperation between EGIZ, A-SIT Plus, A-SIT, and Graz University of Technology.
  *
- * Licensed under the EUPL, Version 1.2 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:
+ * Licensed under the EUPL, Version 1.2 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:
  * https://joinup.ec.europa.eu/news/understanding-eupl-v12
  *
- * 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.
- *******************************************************************************/
-/*******************************************************************************
- *******************************************************************************/
-/*******************************************************************************
- *******************************************************************************/
+ * 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.egiz.eaaf.modules.pvp2.impl.metadata;
 
 import java.io.IOException;
@@ -35,9 +28,12 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Timer;
-
 import javax.xml.namespace.QName;
-
+import at.gv.egiz.components.spring.api.IDestroyableObject;
+import at.gv.egiz.eaaf.core.api.IGarbageCollectorProcessing;
+import at.gv.egiz.eaaf.core.exceptions.EaafConfigurationException;
+import at.gv.egiz.eaaf.modules.pvp2.api.metadata.IPvpMetadataProvider;
+import at.gv.egiz.eaaf.modules.pvp2.api.metadata.IRefreshableMetadataProvider;
 import org.apache.commons.lang3.StringUtils;
 import org.opensaml.saml2.metadata.EntitiesDescriptor;
 import org.opensaml.saml2.metadata.EntityDescriptor;
@@ -52,419 +48,474 @@ import org.opensaml.xml.XMLObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import at.gv.egiz.components.spring.api.IDestroyableObject;
-import at.gv.egiz.eaaf.core.api.IGarbageCollectorProcessing;
-import at.gv.egiz.eaaf.core.exceptions.EAAFConfigurationException;
-import at.gv.egiz.eaaf.modules.pvp2.api.metadata.IPVPMetadataProvider;
-import at.gv.egiz.eaaf.modules.pvp2.api.metadata.IRefreshableMetadataProvider;
-
 public abstract class AbstractChainingMetadataProvider extends SimpleMetadataProvider
-	implements ObservableMetadataProvider, IGarbageCollectorProcessing, 
-	IRefreshableMetadataProvider, IDestroyableObject, IPVPMetadataProvider {
-
-	private static final Logger log = LoggerFactory.getLogger(AbstractChainingMetadataProvider.class);
-	
-	private MetadataProvider internalProvider = null;
-	private static Object mutex = new Object();	
-	private Timer timer = null; 
-	
-		
-	public AbstractChainingMetadataProvider() {
-		internalProvider = new ChainingMetadataProvider();	
-		
-	}
-	
-	public final Timer getTimer() {
-		return this.timer;
-		
-	}
-	
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.config.auth.IGarbageCollectorProcessing#runGarbageCollector()
-	 */
-	@Override
-	public void runGarbageCollector() {
-		synchronized (mutex) {			
-			/**add new Metadataprovider or remove Metadataprovider which are not in use any more.**/
-			try {
-				log.trace("Check consistence of PVP2X metadata");	
-				addAndRemoveMetadataProvider(); 
-					
-			} catch (EAAFConfigurationException e) {
-				log.error("Access to MOA-ID configuration FAILED.", e);
-					
-			}
-		}
-		
-	}
-			
-	public void fullyDestroy() {
-		internalDestroy();
-			
-	}
-	
-	@Override
-	public synchronized boolean refreshMetadataProvider(String entityID) {
-		try {			
-			//check if metadata provider is already loaded
-			try {
-				if (internalProvider.getEntityDescriptor(entityID) != null)
-					return true;
-				
-			} catch (MetadataProviderException e) {}
-			
-			
-			//reload metadata provider 
-			String metadataURL = getMetadataURL(entityID);
-			if (StringUtils.isNotEmpty(metadataURL)) {
-				Map<String, HTTPMetadataProvider> actuallyLoadedProviders = getAllActuallyLoadedProviders();
-
-				// check if MetadataProvider is actually loaded
-				if (actuallyLoadedProviders.containsKey(metadataURL)) {
-					actuallyLoadedProviders.get(metadataURL).refresh();						
-					log.info("SAML2 metadata for service provider: " 
-							+ entityID + " is refreshed.");
-					return true;
-						
-				} else {
-					//load new Metadata Provider
-					if (timer == null)
-						timer = new Timer(true);
-
-					ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;											
-					chainProvider.addMetadataProvider(createNewMetadataProvider(entityID));
-					
-					emitChangeEvent();						
-					log.info("SAML2 metadata for service provider: " 
-							+ entityID + " is added.");
-					return true;
-						
-				}
-															
-			} else
-				log.debug("Can not refresh SAML2 metadata: NO SAML2 metadata URL for SP with Id: " + entityID);
-																	
-		} catch (MetadataProviderException e) {
-			log.warn("Refresh SAML2 metadata for service provider: " 
-					+ entityID + " FAILED.", e);
-			
-		} catch (IOException e) {
-			log.warn("Refresh SAML2 metadata for service provider: " 
-					+ entityID + " FAILED.", e);
-			
-		} catch (EAAFConfigurationException e) {			
-			log.warn("Refresh SAML2 metadata for service provider: " 
-					+ entityID + " FAILED.", e);
-			
-		} catch (CertificateException e) {
-			log.warn("Refresh SAML2 metadata for service provider: " 
-					+ entityID + " FAILED.", e);
-			
-		}
-		
-		return false;
-		
-	}
-			
-	public void internalDestroy() {
-		if (internalProvider != null && internalProvider instanceof ChainingMetadataProvider) {
-			log.info("Destrorying PVP-Authentication MetaDataProvider.");
-			ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;				
-			
-			List<MetadataProvider> providers = chainProvider.getProviders();
-			for (MetadataProvider provider : providers) {
-				if (provider instanceof HTTPMetadataProvider) {
-					HTTPMetadataProvider httpprovider = (HTTPMetadataProvider) provider;
-					log.debug("Destroy HTTPMetadataProvider +" + httpprovider.getMetadataURI());
-					httpprovider.destroy();
-					
-				} else {
-					log.warn("MetadataProvider can not be destroyed.");
-				}
-			}
-				
-			internalProvider = new ChainingMetadataProvider();
-			
-			if (timer != null)
-				timer.cancel();
-			
-		} else {
-			log.warn("ReInitalize MOAMetaDataProvider is not possible! MOA-ID Instance has to be restarted manualy");
-		}
-	}
-	
-	
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#requireValidMetadata()
-	 */
-	@Override
-	public boolean requireValidMetadata() {
-		return internalProvider.requireValidMetadata();
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#setRequireValidMetadata(boolean)
-	 */
-	@Override
-	public void setRequireValidMetadata(boolean requireValidMetadata) {
-		internalProvider.setRequireValidMetadata(requireValidMetadata);
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getMetadataFilter()
-	 */
-	@Override
-	public MetadataFilter getMetadataFilter() {
-		return internalProvider.getMetadataFilter();
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#setMetadataFilter(org.opensaml.saml2.metadata.provider.MetadataFilter)
-	 */
-	@Override
-	public void setMetadataFilter(MetadataFilter newFilter)
-			throws MetadataProviderException {
-		internalProvider.setMetadataFilter(newFilter);
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getMetadata()
-	 */
-	@Override
-	public XMLObject getMetadata() throws MetadataProviderException {
-		return internalProvider.getMetadata();
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getEntitiesDescriptor(java.lang.String)
-	 */
-	@Override
-	public EntitiesDescriptor getEntitiesDescriptor(String entitiesID)
-			throws MetadataProviderException {
-		EntitiesDescriptor entitiesDesc = null;
-		try {
-			entitiesDesc = internalProvider.getEntitiesDescriptor(entitiesID);
-		
-			if (entitiesDesc == null) {
-				log.debug("Can not find PVP metadata for entityID: " + entitiesID 
-						+ " Start refreshing process ...");
-				if (refreshMetadataProvider(entitiesID))
-					return internalProvider.getEntitiesDescriptor(entitiesID);
-									
-			}			
-			
-		} catch (MetadataProviderException e) {
-			log.debug("Can not find PVP metadata for entityID: " + entitiesID 
-					+ " Start refreshing process ...");
-			if (refreshMetadataProvider(entitiesID))
-				return internalProvider.getEntitiesDescriptor(entitiesID);
-			
-		}	
-		
-		return entitiesDesc;
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getEntityDescriptor(java.lang.String)
-	 */
-	@Override
-	public EntityDescriptor getEntityDescriptor(String entityID)
-			throws MetadataProviderException {
-		EntityDescriptor entityDesc = null;
-		try {
-			entityDesc = internalProvider.getEntityDescriptor(entityID);
-			if (entityDesc == null) {
-				log.debug("Can not find PVP metadata for entityID: " + entityID 
-						+ " Start refreshing process ...");
-				if (refreshMetadataProvider(entityID))
-					return internalProvider.getEntityDescriptor(entityID);
-									
-			}
-			
-		} catch (MetadataProviderException e) {
-			log.debug("Can not find PVP metadata for entityID: " + entityID 
-					+ " Start refreshing process ...");
-			if (refreshMetadataProvider(entityID))
-				return internalProvider.getEntityDescriptor(entityID);
-			
-		}
-		
-//		if (entityDesc != null)
-//			lastAccess.put(entityID, new Date());
-		
-		return entityDesc;
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getRole(java.lang.String, javax.xml.namespace.QName)
-	 */
-	@Override
-	public List<RoleDescriptor> getRole(String entityID, QName roleName)
-			throws MetadataProviderException {		
-		List<RoleDescriptor> result = internalProvider.getRole(entityID, roleName);
-		
-//		if (result != null)
-//			lastAccess.put(entityID, new Date());
-		
-		return result; 
-	}
-
-	/* (non-Javadoc)
-	 * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getRole(java.lang.String, javax.xml.namespace.QName, java.lang.String)
-	 */
-	@Override
-	public RoleDescriptor getRole(String entityID, QName roleName,
-			String supportedProtocol) throws MetadataProviderException {
-		RoleDescriptor result = internalProvider.getRole(entityID, roleName, supportedProtocol);
-		
-//		if (result != null)
-//			lastAccess.put(entityID, new Date());
-		
-		return result; 
-	}
-
-	/* (non-Javadoc)
-	 * @see org.opensaml.saml2.metadata.provider.ObservableMetadataProvider#getObservers()
-	 */
-	@Override
-	public List<Observer> getObservers() {
-		return ((ChainingMetadataProvider) internalProvider).getObservers();
-	}
-
-	
-	/**
-	 * Get the URL to metadata for a specific entityID
-	 * 
-	 * @param entityId
-	 * @return
-	 * @throws EAAFConfigurationException 
-	 */
-	protected abstract String getMetadataURL(String entityId) throws EAAFConfigurationException;
-	
-	/**
-	 * Creates a new implementation specific SAML2 metadata provider
-	 * 
-	 * @param entityId
-	 * @return
-	 * @throws EAAFConfigurationException
-	 * @throws IOException 
-	 * @throws CertificateException 
-	 * @throws ConfigurationException 
-	 */
-	protected abstract MetadataProvider createNewMetadataProvider(String entityId) throws EAAFConfigurationException, IOException, CertificateException;
-	
-	/**
-	 * Get a List of metadata URLs for all SAML2 SPs from configuration 
-	 * 
-	 * @throws EAAFConfigurationException
-	 */
-	protected abstract List<String> getAllMetadataURLsFromConfiguration() throws EAAFConfigurationException;
-	
-	
-	protected void emitChangeEvent() {
-		if ((getObservers() == null) || (getObservers().size() == 0)) {
-			return;
-		}
-
-		List<Observer> tempObserverList = new ArrayList<Observer>(getObservers());
-		for (ObservableMetadataProvider.Observer observer : tempObserverList)
-			if (observer != null)
-				observer.onEvent(this);
-	}
-	
-	private Map<String, HTTPMetadataProvider> getAllActuallyLoadedProviders() {
-		Map<String, HTTPMetadataProvider> loadedproviders = new HashMap<String, HTTPMetadataProvider>();
-		ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;
-		
-		//make a Map of all actually loaded HTTPMetadataProvider
-		List<MetadataProvider> providers = chainProvider.getProviders();
-		for (MetadataProvider provider : providers) {
-			if (provider instanceof HTTPMetadataProvider) {
-				HTTPMetadataProvider httpprovider = (HTTPMetadataProvider) provider;
-				loadedproviders.put(httpprovider.getMetadataURI(), httpprovider);
-
-			}
-		}
-		
-		return loadedproviders;		
-	}
-	
-	private void addAndRemoveMetadataProvider() throws EAAFConfigurationException {
-		if (internalProvider != null && internalProvider instanceof ChainingMetadataProvider) {
-			log.info("Reload MOAMetaDataProvider.");
-			
-			/*OpenSAML ChainingMetadataProvider can not remove a MetadataProvider (UnsupportedOperationException)
-			 *The ChainingMetadataProvider use internal a unmodifiableList to hold all registrated MetadataProviders.*/ 
-			Map<String, MetadataProvider> providersinuse = new HashMap<String, MetadataProvider>();
-			ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;
-			
-			//get all actually loaded metadata providers
-			Map<String, HTTPMetadataProvider> loadedproviders = getAllActuallyLoadedProviders();
-						
-			/* TODO: maybe add metadata provider destroy after timeout.
-			 *       But could be a problem if one Metadataprovider load an EntitiesDescriptor 
-			 *       with more the multiple EntityDescriptors. If one of this EntityDesciptors 
-			 *       are expired the full EntitiesDescriptor is removed. 
-			 *       
-			 *       Timeout requires a better solution in this case! 
-			 */
-									
-			//load all SAML2 SPs form configuration and 
-			//compare actually loaded Providers with configured SAML2 SPs			
-			List<String> allMetadataURLs = getAllMetadataURLsFromConfiguration();
-			
-			if (allMetadataURLs != null) {
-				Iterator<String> metadataURLInterator = allMetadataURLs.iterator();
-				while (metadataURLInterator.hasNext()) {
-					String metadataurl = metadataURLInterator.next();			
-					try {
-						if (StringUtils.isNotEmpty(metadataurl)) {						
-							if (loadedproviders.containsKey(metadataurl)) {									
-								//	SAML2 SP is actually loaded, to nothing
-								providersinuse.put(metadataurl, loadedproviders.get(metadataurl));
-								loadedproviders.remove(metadataurl);
-													
-							}
-						}
-					} catch (Throwable e) {
-						log.error(
-						"Failed to add Metadata (unhandled reason: " + e.getMessage(), e);
-										
-					}	
-				}
-			}
-			
-			//remove all actually loaded MetadataProviders with are not in ConfigurationDB any more
-			Collection<HTTPMetadataProvider> notusedproviders = loadedproviders.values();
-			for (HTTPMetadataProvider provider : notusedproviders) {
-				String metadataurl = provider.getMetadataURI();				
-				try {					
-					provider.destroy();
-					
-					/*OpenSAML ChainingMetadataProvider can not remove a MetadataProvider (UnsupportedOperationException)
-					 *The ChainingMetadataProvider use internal a unmodifiableList to hold all registrated MetadataProviders.*/
-					//chainProvider.removeMetadataProvider(provider);					
-					log.info("Remove not used MetadataProvider with MetadataURL " + metadataurl);
-					
-				} catch (Throwable e) {
-					log.error("HTTPMetadataProvider with URL " + metadataurl 
-							+ " can not be removed from the list of actually loaded Providers.", e);
-					
-				}
-				
-			}
-			
-			try {
-				chainProvider.setProviders(new ArrayList<MetadataProvider>(providersinuse.values()));				
-				emitChangeEvent();
-								
-			} catch (MetadataProviderException e) {
-				log.warn("ReInitalize AbstractMetaDataProvider is not possible! Service has to be restarted manualy", e);
-														
-			}
-			
-		} else
-			log.warn("ReInitalize AbstractMetaDataProvider is not possible! Service has to be restarted manualy");
-		
-	}
+    implements ObservableMetadataProvider, IGarbageCollectorProcessing,
+    IRefreshableMetadataProvider, IDestroyableObject, IPvpMetadataProvider {
+
+  private static final Logger log = LoggerFactory.getLogger(AbstractChainingMetadataProvider.class);
+
+  private MetadataProvider internalProvider = null;
+  private static Object mutex = new Object();
+  private Timer timer = null;
+
+
+  public AbstractChainingMetadataProvider() {
+    internalProvider = new ChainingMetadataProvider();
+
+  }
+
+  public final Timer getTimer() {
+    return this.timer;
+
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see at.gv.egovernment.moa.id.config.auth.IGarbageCollectorProcessing#runGarbageCollector()
+   */
+  @Override
+  public void runGarbageCollector() {
+    synchronized (mutex) {
+      /* add new Metadataprovider or remove Metadataprovider which are not in use any more. */
+      try {
+        log.trace("Check consistence of PVP2X metadata");
+        addAndRemoveMetadataProvider();
+
+      } catch (final EaafConfigurationException e) {
+        log.error("Access to MOA-ID configuration FAILED.", e);
+
+      }
+    }
+
+  }
+
+  @Override
+  public void fullyDestroy() {
+    internalDestroy();
+
+  }
+
+  @Override
+  public synchronized boolean refreshMetadataProvider(final String entityID) {
+    try {
+      // check if metadata provider is already loaded
+      try {
+        if (internalProvider.getEntityDescriptor(entityID) != null) {
+          return true;
+        }
+
+      } catch (final MetadataProviderException e) {
+        log.debug("Metadata for EntityId: {} is not valid. Starting refresh ... ", entityID);
+
+      }
+
+
+      // reload metadata provider
+      final String metadataUrl = getMetadataUrl(entityID);
+      if (StringUtils.isNotEmpty(metadataUrl)) {
+        final Map<String, HTTPMetadataProvider> actuallyLoadedProviders =
+            getAllActuallyLoadedProviders();
+
+        // check if MetadataProvider is actually loaded
+        if (actuallyLoadedProviders.containsKey(metadataUrl)) {
+          actuallyLoadedProviders.get(metadataUrl).refresh();
+          log.info("SAML2 metadata for service provider: " + entityID + " is refreshed.");
+          return true;
+
+        } else {
+          // load new Metadata Provider
+          if (timer == null) {
+            timer = new Timer(true);
+          }
+
+          final ChainingMetadataProvider chainProvider =
+              (ChainingMetadataProvider) internalProvider;
+          chainProvider.addMetadataProvider(createNewMetadataProvider(entityID));
+
+          emitChangeEvent();
+          log.info("SAML2 metadata for service provider: " + entityID + " is added.");
+          return true;
+
+        }
+
+      } else {
+        log.debug(
+            "Can not refresh SAML2 metadata: NO SAML2 metadata URL for SP with Id: " + entityID);
+      }
+
+    } catch (final MetadataProviderException e) {
+      log.warn("Refresh SAML2 metadata for service provider: " + entityID + " FAILED.", e);
+
+    } catch (final IOException e) {
+      log.warn("Refresh SAML2 metadata for service provider: " + entityID + " FAILED.", e);
+
+    } catch (final EaafConfigurationException e) {
+      log.warn("Refresh SAML2 metadata for service provider: " + entityID + " FAILED.", e);
+
+    } catch (final CertificateException e) {
+      log.warn("Refresh SAML2 metadata for service provider: " + entityID + " FAILED.", e);
+
+    }
+
+    return false;
+
+  }
+
+  /**
+   * Close metadata provider and remove all loaded metadata.
+   *
+   */
+  public void internalDestroy() {
+    if (internalProvider != null && internalProvider instanceof ChainingMetadataProvider) {
+      log.info("Destrorying PVP-Authentication MetaDataProvider.");
+      final ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;
+
+      final List<MetadataProvider> providers = chainProvider.getProviders();
+      for (final MetadataProvider provider : providers) {
+        if (provider instanceof HTTPMetadataProvider) {
+          final HTTPMetadataProvider httpprovider = (HTTPMetadataProvider) provider;
+          log.debug("Destroy HTTPMetadataProvider +" + httpprovider.getMetadataURI());
+          httpprovider.destroy();
+
+        } else {
+          log.warn("MetadataProvider can not be destroyed.");
+        }
+      }
+
+      internalProvider = new ChainingMetadataProvider();
+
+      if (timer != null) {
+        timer.cancel();
+      }
+
+    } else {
+      log.warn(
+          "ReInitalize MOAMetaDataProvider is not possible! MOA-ID Instance has to be restarted manualy");
+    }
+  }
+
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#requireValidMetadata()
+   */
+  @Override
+  public boolean requireValidMetadata() {
+    return internalProvider.requireValidMetadata();
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#setRequireValidMetadata
+   * (boolean)
+   */
+  @Override
+  public void setRequireValidMetadata(final boolean requireValidMetadata) {
+    internalProvider.setRequireValidMetadata(requireValidMetadata);
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getMetadataFilter()
+   */
+  @Override
+  public MetadataFilter getMetadataFilter() {
+    return internalProvider.getMetadataFilter();
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#setMetadataFilter(org.
+   * opensaml.saml2.metadata.provider.MetadataFilter)
+   */
+  @Override
+  public void setMetadataFilter(final MetadataFilter newFilter) throws MetadataProviderException {
+    internalProvider.setMetadataFilter(newFilter);
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getMetadata()
+   */
+  @Override
+  public XMLObject getMetadata() throws MetadataProviderException {
+    return internalProvider.getMetadata();
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getEntitiesDescriptor(
+   * java.lang.String)
+   */
+  @Override
+  public EntitiesDescriptor getEntitiesDescriptor(final String entitiesID)
+      throws MetadataProviderException {
+    EntitiesDescriptor entitiesDesc = null;
+    try {
+      entitiesDesc = internalProvider.getEntitiesDescriptor(entitiesID);
+
+      if (entitiesDesc == null) {
+        log.debug("Can not find PVP metadata for entityID: " + entitiesID
+            + " Start refreshing process ...");
+        if (refreshMetadataProvider(entitiesID)) {
+          return internalProvider.getEntitiesDescriptor(entitiesID);
+        }
+
+      }
+
+    } catch (final MetadataProviderException e) {
+      log.debug("Can not find PVP metadata for entityID: " + entitiesID
+          + " Start refreshing process ...");
+      if (refreshMetadataProvider(entitiesID)) {
+        return internalProvider.getEntitiesDescriptor(entitiesID);
+      }
+
+    }
+
+    return entitiesDesc;
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getEntityDescriptor(
+   * java.lang.String)
+   */
+  @Override
+  public EntityDescriptor getEntityDescriptor(final String entityID)
+      throws MetadataProviderException {
+    EntityDescriptor entityDesc = null;
+    try {
+      entityDesc = internalProvider.getEntityDescriptor(entityID);
+      if (entityDesc == null) {
+        log.debug("Can not find PVP metadata for entityID: " + entityID
+            + " Start refreshing process ...");
+        if (refreshMetadataProvider(entityID)) {
+          return internalProvider.getEntityDescriptor(entityID);
+        }
+
+      }
+
+    } catch (final MetadataProviderException e) {
+      log.debug(
+          "Can not find PVP metadata for entityID: " + entityID + " Start refreshing process ...");
+      if (refreshMetadataProvider(entityID)) {
+        return internalProvider.getEntityDescriptor(entityID);
+      }
+
+    }
+
+    // if (entityDesc != null)
+    // lastAccess.put(entityID, new Date());
+
+    return entityDesc;
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getRole(java.lang.
+   * String, javax.xml.namespace.QName)
+   */
+  @Override
+  public List<RoleDescriptor> getRole(final String entityID, final QName roleName)
+      throws MetadataProviderException {
+    final List<RoleDescriptor> result = internalProvider.getRole(entityID, roleName);
+
+    // if (result != null)
+    // lastAccess.put(entityID, new Date());
+
+    return result;
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see at.gv.egovernment.moa.id.protocols.pvp2x.metadata.IEAAFMetadataProvider#getRole(java.lang.
+   * String, javax.xml.namespace.QName, java.lang.String)
+   */
+  @Override
+  public RoleDescriptor getRole(final String entityID, final QName roleName,
+      final String supportedProtocol) throws MetadataProviderException {
+    final RoleDescriptor result = internalProvider.getRole(entityID, roleName, supportedProtocol);
+
+    // if (result != null)
+    // lastAccess.put(entityID, new Date());
+
+    return result;
+  }
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see org.opensaml.saml2.metadata.provider.ObservableMetadataProvider#getObservers()
+   */
+  @Override
+  public List<Observer> getObservers() {
+    return ((ChainingMetadataProvider) internalProvider).getObservers();
+  }
+
+
+  /**
+   * Get the URL to metadata for a specific entityID.
+   *
+   * @param entityId EntityId
+   * @return URL to metadata
+   * @throws EaafConfigurationException In case of an error
+   */
+  protected abstract String getMetadataUrl(String entityId) throws EaafConfigurationException;
+
+  /**
+   * Creates a new implementation specific SAML2 metadata provider.
+   *
+   * @param entityId EntityId
+   * @return MetadataProvider
+   * @throws EaafConfigurationException In case of an error
+   * @throws IOException  In case of an error
+   * @throws CertificateException  In case of an error
+   * @throws ConfigurationException  In case of an error
+   */
+  protected abstract MetadataProvider createNewMetadataProvider(String entityId)
+      throws EaafConfigurationException, IOException, CertificateException;
+
+  /**
+   * Get a List of metadata URLs for all SAML2 SPs from configuration.
+   *
+   * @throws EaafConfigurationException In case of an error
+   */
+  protected abstract List<String> getAllMetadataUrlsFromConfiguration()
+      throws EaafConfigurationException;
+
+
+  protected void emitChangeEvent() {
+    if ((getObservers() == null) || (getObservers().size() == 0)) {
+      return;
+    }
+
+    final List<Observer> tempObserverList = new ArrayList<>(getObservers());
+    for (final ObservableMetadataProvider.Observer observer : tempObserverList) {
+      if (observer != null) {
+        observer.onEvent(this);
+      }
+    }
+  }
+
+  private Map<String, HTTPMetadataProvider> getAllActuallyLoadedProviders() {
+    final Map<String, HTTPMetadataProvider> loadedproviders =
+        new HashMap<>();
+    final ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;
+
+    // make a Map of all actually loaded HTTPMetadataProvider
+    final List<MetadataProvider> providers = chainProvider.getProviders();
+    for (final MetadataProvider provider : providers) {
+      if (provider instanceof HTTPMetadataProvider) {
+        final HTTPMetadataProvider httpprovider = (HTTPMetadataProvider) provider;
+        loadedproviders.put(httpprovider.getMetadataURI(), httpprovider);
+
+      }
+    }
+
+    return loadedproviders;
+  }
+
+  private void addAndRemoveMetadataProvider() throws EaafConfigurationException {
+    if (internalProvider != null && internalProvider instanceof ChainingMetadataProvider) {
+      log.info("Reload MOAMetaDataProvider.");
+
+      /*
+       * OpenSAML ChainingMetadataProvider can not remove a MetadataProvider
+       * (UnsupportedOperationException) The ChainingMetadataProvider use internal a
+       * unmodifiableList to hold all registrated MetadataProviders.
+       */
+      final Map<String, MetadataProvider> providersinuse = new HashMap<>();
+      final ChainingMetadataProvider chainProvider = (ChainingMetadataProvider) internalProvider;
+
+      // get all actually loaded metadata providers
+      final Map<String, HTTPMetadataProvider> loadedproviders = getAllActuallyLoadedProviders();
+
+      /*
+       * TODO: maybe add metadata provider destroy after timeout. But could be a problem if one
+       * Metadataprovider load an EntitiesDescriptor with more the multiple EntityDescriptors. If
+       * one of this EntityDesciptors are expired the full EntitiesDescriptor is removed.
+       *
+       * Timeout requires a better solution in this case!
+       */
+
+      // load all SAML2 SPs form configuration and
+      // compare actually loaded Providers with configured SAML2 SPs
+      final List<String> allMetadataUrls = getAllMetadataUrlsFromConfiguration();
+
+      if (allMetadataUrls != null) {
+        final Iterator<String> metadataUrlInterator = allMetadataUrls.iterator();
+        while (metadataUrlInterator.hasNext()) {
+          final String metadataurl = metadataUrlInterator.next();
+          try {
+            if (StringUtils.isNotEmpty(metadataurl)) {
+              if (loadedproviders.containsKey(metadataurl)) {
+                // SAML2 SP is actually loaded, to nothing
+                providersinuse.put(metadataurl, loadedproviders.get(metadataurl));
+                loadedproviders.remove(metadataurl);
+
+              }
+            }
+          } catch (final Throwable e) {
+            log.error("Failed to add Metadata (unhandled reason: " + e.getMessage(), e);
+
+          }
+        }
+      }
+
+      // remove all actually loaded MetadataProviders with are not in ConfigurationDB any more
+      final Collection<HTTPMetadataProvider> notusedproviders = loadedproviders.values();
+      for (final HTTPMetadataProvider provider : notusedproviders) {
+        final String metadataurl = provider.getMetadataURI();
+        try {
+          provider.destroy();
+
+          /*
+           * OpenSAML ChainingMetadataProvider can not remove a MetadataProvider
+           * (UnsupportedOperationException) The ChainingMetadataProvider use internal a
+           * unmodifiableList to hold all registrated MetadataProviders.
+           */
+          // chainProvider.removeMetadataProvider(provider);
+          log.info("Remove not used MetadataProvider with MetadataURL " + metadataurl);
+
+        } catch (final Throwable e) {
+          log.error("HTTPMetadataProvider with URL " + metadataurl
+              + " can not be removed from the list of actually loaded Providers.", e);
+
+        }
+
+      }
+
+      try {
+        chainProvider.setProviders(new ArrayList<>(providersinuse.values()));
+        emitChangeEvent();
+
+      } catch (final MetadataProviderException e) {
+        log.warn(
+            "ReInitalize AbstractMetaDataProvider is not possible! Service has to be restarted manualy",
+            e);
+
+      }
+
+    } else {
+      log.warn(
+          "ReInitalize AbstractMetaDataProvider is not possible! Service has to be restarted manualy");
+    }
+
+  }
 }