[POLICY-73] replace openecomp for policy-engine

Change-Id: I54072f6bcd388c0e05562614ee89b4ae7ad67004
Signed-off-by: Guo Ruijing <ruijing.guo@intel.com>
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>

8 files changed, 1652 insertions, 0 deletions

diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSGateway.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSGateway.java
new file mode 100644
index 000000000..0b4058d59
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSGateway.java
@@ -0,0 +1,88 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.brmsInterface;
+
+import org.onap.policy.api.NotificationScheme;
+import org.onap.policy.api.PolicyEngine;
+
+//import org.apache.log4j.Logger;
+
+//import org.apache.commons.logging.Log;
+//import org.apache.commons.logging.LogFactory;
+
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+
+import org.onap.policy.xacml.api.XACMLErrorConstants;
+
+
+/**
+ * BRMSGateway: This application acts as the Gateway interface between the PDP XACML and PDP Drools. 
+ * The listens for BRMS based policies and pushes them to the specified Policy Repository, from where the PDP Drools reads the Rule Jar.  
+ * 
+ * @version 0.1
+ */
+public class BRMSGateway {
+	
+	private static final Logger logger = FlexLogger.getLogger(BRMSGateway.class);
+	private static final String configFile = "config.properties";
+	
+	private static PolicyEngine policyEngine = null;
+	
+	public static void main(String[] args) throws Exception{
+		// Initialize Handler. 
+		logger.info("Initializing BRMS Handler");
+		BRMSHandler bRMSHandler = null;
+		try{
+			bRMSHandler = new BRMSHandler(configFile);
+		}catch(NullPointerException e){
+			logger.error("Check your property file: " + e.getMessage());
+			System.exit(1);
+		}
+		
+		// Set Handler with Auto Notification and initialize policyEngine
+		try{
+			logger.info("Initializing policyEngine with Auto Notifications");
+			policyEngine= new PolicyEngine(configFile,NotificationScheme.AUTO_ALL_NOTIFICATIONS, bRMSHandler);
+		}catch(Exception e){
+			logger.error(XACMLErrorConstants.ERROR_UNKNOWN+"Error while Initializing Policy Engine "  + e.getMessage()); 
+		}
+		
+		//Keep Running.... 
+		Runnable runnable = new Runnable(){
+			public void run(){
+				while (true){
+					try {
+						Thread.sleep(30000);
+					} catch (InterruptedException e) {
+						logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR+"Thread Exception " + e.getMessage()); 
+					}
+				}
+			}
+		};
+		Thread thread = new Thread(runnable);
+		thread.start();
+	}
+	
+	public static PolicyEngine getPolicyEngine(){
+		return policyEngine;
+	}
+}
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSHandler.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSHandler.java
new file mode 100644
index 000000000..305f64de1
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSHandler.java
@@ -0,0 +1,184 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.brmsInterface;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.onap.policy.api.ConfigRequestParameters;
+import org.onap.policy.api.LoadedPolicy;
+import org.onap.policy.api.NotificationType;
+import org.onap.policy.api.PDPNotification;
+import org.onap.policy.api.PolicyConfig;
+import org.onap.policy.api.PolicyConfigStatus;
+import org.onap.policy.api.PolicyEngine;
+import org.onap.policy.api.PolicyException;
+import org.onap.policy.api.RemovedPolicy;
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.utils.BackUpHandler;
+import org.onap.policy.xacml.api.XACMLErrorConstants;
+
+/**
+ * BRMSHandler: Notification Handler which listens for PDP Notifications. 
+ * Take action only for BRMS policies. 
+ * 
+ * @version 0.3
+ */
+public class BRMSHandler implements BackUpHandler{
+	
+	private static final Logger logger = FlexLogger.getLogger(BRMSHandler.class.getName());
+	
+	private BRMSPush bRMSPush = null;
+	
+	public BRMSHandler(String propertiesFile) throws PolicyException{
+		setBRMSPush(new BRMSPush(propertiesFile, this));
+	}
+
+	public void setBRMSPush(BRMSPush brmsPush) {
+		this.bRMSPush = brmsPush;
+	}
+	
+	/*
+	 * This Method is executed upon notification by the Policy Engine API Notification. 
+	 * (non-Javadoc)
+	 * @see org.onap.policy.utils.BackUpHandler#notificationReceived(org.onap.policy.api.PDPNotification)
+	 */
+	@Override
+	public void notificationReceived(PDPNotification notification) {
+		logger.info("Notification Recieved");
+		logger.info(notification.getNotificationType().toString());
+		Boolean flag = BRMSPush.getBackUpMonitor().getFlag();
+		bRMSPush.initiate(flag);
+		if(flag){
+			logger.info("Master Application performing on Notification ");
+			runOnNotification(notification);
+		}else{
+			logger.info("Slave application Skipping Notification.. ");
+		}
+	}
+	
+	/*
+	 * Executed when a policy is removed from PDP.  
+	 */
+	private void removedPolicies(Collection<RemovedPolicy> removedPolicies){
+		Boolean removed = false;
+		logger.info("Removed Policies");
+		for(RemovedPolicy removedPolicy: removedPolicies){
+			logger.info(removedPolicy.getPolicyName());
+			logger.info(removedPolicy.getVersionNo());
+			if(removedPolicy.getPolicyName().contains("_BRMS_")){
+				try{
+					logger.info("Policy Removed with this policy Name : " + removedPolicy.getPolicyName());
+					bRMSPush.removeRule(removedPolicy.getPolicyName());
+					removed = true;
+				}catch(Exception e){
+					logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+"Rertriving policy failed " + e.getMessage());
+				}
+			}
+		}
+		Boolean failureFlag = false;
+		int i = 0;
+		do{
+			failureFlag = false;
+			if(removed){
+				try{
+					bRMSPush.pushRules();
+				}catch(PolicyException e){
+					//Upon Notification failure 
+					failureFlag = true;
+					bRMSPush.rotateURLs();
+				}
+			}
+			i++;
+		}while(failureFlag && i< bRMSPush.URLListSize());
+	}
+	
+	/*
+	 * This method is executed if BRMSGW is "MASTER" 
+	 * (non-Javadoc)
+	 * @see org.onap.policy.utils.BackUpHandler#runOnNotification(org.onap.policy.api.PDPNotification)
+	 */
+	public void runOnNotification(PDPNotification notification){
+		if(notification.getNotificationType().equals(NotificationType.REMOVE)){
+			removedPolicies(notification.getRemovedPolicies());
+		}else if(notification.getNotificationType().equals(NotificationType.UPDATE)|| notification.getNotificationType().equals(NotificationType.BOTH)){
+			logger.info("Updated Policies: \n");
+			ArrayList<PolicyConfig> brmsPolicies = addedPolicies(notification);
+			Boolean successFlag = false;
+			for(int i=0; !successFlag && i< bRMSPush.URLListSize(); i++){
+				if(i!=0){
+					for(PolicyConfig policyConfig: brmsPolicies){
+						logger.info("Policy Retry with this Name notified: " + policyConfig.getPolicyName());
+						bRMSPush.addRule(policyConfig.getPolicyName(),policyConfig.toOther(),policyConfig.getResponseAttributes());
+					}
+				}
+				try{
+					bRMSPush.pushRules();
+					successFlag = true;
+				}catch(PolicyException e){
+					//Upon Notification failure 
+					successFlag = false;
+					bRMSPush.rotateURLs();
+				}
+			}
+		}
+	}
+
+	/*
+	 * Executed when a policy is added to PDP.  
+	 */
+	private ArrayList<PolicyConfig> addedPolicies(PDPNotification notification) {
+		ArrayList<PolicyConfig> result = new ArrayList<>();
+		for(LoadedPolicy updatedPolicy: notification.getLoadedPolicies()){
+			logger.info("policyName : " + updatedPolicy.getPolicyName());
+			logger.info("policyVersion :" + updatedPolicy.getVersionNo());
+			logger.info("Matches: " + updatedPolicy.getMatches());
+			// Checking the Name is correct or not. 
+			if(updatedPolicy.getPolicyName().contains("_BRMS_")){
+				try{
+					PolicyEngine policyEngine = getPolicyEngine();
+					if(policyEngine!=null){
+						ConfigRequestParameters configRequestParameters = new ConfigRequestParameters();
+						configRequestParameters.setPolicyName(updatedPolicy.getPolicyName());
+						Collection<PolicyConfig> policyConfigs = policyEngine.getConfig(configRequestParameters);
+						for(PolicyConfig policyConfig: policyConfigs){
+							if(policyConfig.getPolicyConfigStatus().equals(PolicyConfigStatus.CONFIG_RETRIEVED)){
+								logger.info("Policy Retrieved with this Name notified: " + policyConfig.getPolicyName());
+								result.add(policyConfig);
+								bRMSPush.addRule(policyConfig.getPolicyName(),policyConfig.toOther(),policyConfig.getResponseAttributes());
+							}else{
+								logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Fail to retrieve policy so rule will not be pushed to PolicyRepo !!!!\n\n");
+							}
+						}
+					}
+				}catch(Exception e){
+					logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+"Rertriving policy failed " + e.getMessage());
+				}
+			}
+		}
+		return result;
+	}
+
+	public PolicyEngine getPolicyEngine() {
+		return BRMSGateway.getPolicyEngine();
+	}
+}
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSPush.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSPush.java
new file mode 100644
index 000000000..c24493882
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/BRMSPush.java
@@ -0,0 +1,1107 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.brmsInterface;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Writer;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.GeneralSecurityException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.EntityTransaction;
+import javax.persistence.Persistence;
+import javax.persistence.Query;
+
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang.StringEscapeUtils;
+import org.apache.maven.model.Dependency;
+import org.apache.maven.model.DeploymentRepository;
+import org.apache.maven.model.DistributionManagement;
+import org.apache.maven.model.Model;
+import org.apache.maven.model.io.xpp3.MavenXpp3Writer;
+import org.apache.maven.shared.invoker.DefaultInvocationRequest;
+import org.apache.maven.shared.invoker.DefaultInvoker;
+import org.apache.maven.shared.invoker.InvocationRequest;
+import org.apache.maven.shared.invoker.InvocationResult;
+import org.apache.maven.shared.invoker.Invoker;
+import org.codehaus.plexus.util.IOUtil;
+import org.codehaus.plexus.util.WriterFactory;
+import org.eclipse.persistence.config.PersistenceUnitProperties;
+import org.onap.policy.api.PEDependency;
+import org.onap.policy.api.PolicyException;
+import org.onap.policy.brmsInterface.jpa.BRMSGroupInfo;
+import org.onap.policy.brmsInterface.jpa.BRMSPolicyInfo;
+import org.onap.policy.brmsInterface.jpa.DependencyInfo;
+import org.onap.policy.common.im.AdministrativeStateException;
+import org.onap.policy.common.im.IntegrityMonitor;
+import org.onap.policy.common.logging.eelf.MessageCodes;
+import org.onap.policy.common.logging.eelf.PolicyLogger;
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.utils.BackUpHandler;
+import org.onap.policy.utils.BackUpMonitor;
+import org.onap.policy.utils.BusPublisher;
+import org.onap.policy.utils.PolicyUtils;
+import org.onap.policy.xacml.api.XACMLErrorConstants;
+import org.sonatype.nexus.client.NexusClient;
+import org.sonatype.nexus.client.NexusClientException;
+import org.sonatype.nexus.client.NexusConnectionException;
+import org.sonatype.nexus.client.rest.NexusRestClient;
+import org.sonatype.nexus.rest.model.NexusArtifact;
+
+import com.att.nsa.cambria.client.CambriaBatchingPublisher;
+import com.att.nsa.cambria.client.CambriaClientBuilders;
+import com.att.nsa.cambria.client.CambriaClientBuilders.PublisherBuilder;
+import com.fasterxml.jackson.core.JsonProcessingException;
+
+/**
+ * BRMSPush: Application responsible to push policies to the BRMS PDP Policy Repository (PR). 
+ * Mavenize and push policy to PR
+ * 
+ * @version 1.0 
+ */
+
+@SuppressWarnings("deprecation")
+public class BRMSPush {
+	private static final Logger LOGGER = FlexLogger.getLogger(BRMSPush.class.getName());
+	private static final String PROJECTSLOCATION = "RuleProjects";
+	private static final String GOALS[] = {"clean", "deploy"};
+	private static final String DEFAULT_VERSION = "1.1.0-SNAPSHOT";
+	private static final String DEPENDENCY_FILE = "dependency.json";
+
+	private static Map<String, String> modifiedGroups = new HashMap<>();
+	private static IntegrityMonitor im;
+	private static BackUpMonitor bm;
+	private static String resourceName = null;
+	private String defaultName = null;
+	private String repID = null; 
+	private String repName = null;
+	private ArrayList<String> repURLs= null;  
+	private String repUserName = null;
+	private String repPassword = null;
+	private String policyKeyID = null;
+	private boolean createFlag = false;
+	private String uebList = null;
+	private List<String> dmaapList = null;
+	private String pubTopic = null;
+	private PublisherBuilder pubBuilder = null;
+	protected BusPublisher publisher = null;
+	private Long uebDelay = Long.parseLong("20");
+	private Long dmaapDelay = Long.parseLong("5000");
+	private String notificationType = null;
+	private ArrayList<ControllerPOJO> controllers;
+	private HashMap<String, ArrayList<Object>> groupMap = new HashMap<>();
+	private Map<String, String> policyMap = new HashMap<>();
+	private String brmsdependencyversion;
+	private EntityManager em;
+	private boolean syncFlag = false;
+
+	public BRMSPush(String propertiesFile, BackUpHandler handler) throws PolicyException{
+		Properties config = new Properties();
+		Path file = Paths.get(propertiesFile);
+		if(Files.notExists(file)){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE+"Config File doesn't Exist in the specified Path " + file.toString());
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE+"Config File doesn't Exist in the specified Path " + file.toString());
+		}else{
+			if(file.toString().endsWith(".properties")){
+				// Grab the Properties. 
+				setProperty(file, config, handler);
+			}
+		}
+	}
+
+	private void setProperty(Path file, Properties config, BackUpHandler handler) throws PolicyException{
+		InputStream in;
+		try {
+			in = new FileInputStream(file.toFile());
+			config.load(in);
+		} catch (IOException e) {
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "Data/File Read Error while reading from the property file.");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "Data/File Read Error while reading from the property file.");
+		}
+		LOGGER.info("Trying to set up IntegrityMonitor");
+		try {
+			LOGGER.info("Trying to set up IntegrityMonitor");
+			resourceName = config.getProperty("RESOURCE_NAME");
+			if(resourceName==null){
+				LOGGER.warn("RESOURCE_NAME is missing setting default value. ");
+				resourceName = "brmsgw_pdp01";
+			}
+			resourceName = resourceName.trim();
+			im = IntegrityMonitor.getInstance(resourceName, config);
+		} catch (Exception e) {
+			LOGGER.error("Error starting Integerity Monitor: " + e);
+		}
+		LOGGER.info("Trying to set up BackUpMonitor");
+		try {
+			bm = BackUpMonitor.getInstance(BackUpMonitor.ResourceNode.BRMS.toString(), resourceName, config, handler);
+		} catch (Exception e) {
+			LOGGER.error("Error starting BackUpMonitor: " + e);
+		}
+		config.setProperty(PersistenceUnitProperties.ECLIPSELINK_PERSISTENCE_XML, "META-INF/persistenceBRMS.xml");
+		EntityManagerFactory emf = Persistence.createEntityManagerFactory("BRMSGW", config);
+		em = emf.createEntityManager();
+		defaultName = config.getProperty("defaultName");
+		if(defaultName==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "defaultName property is missing from the property file ");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "defaultName property is missing from the property file");
+		}
+		defaultName = defaultName.trim();
+		repID = config.getProperty("repositoryID");
+		if(repID==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "repositoryID property is missing from the property file ");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "repositoryID property is missing from the property file ");
+		}
+		repID = repID.trim();
+		repName = config.getProperty("repositoryName");
+		if(repName==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "repositoryName property is missing from the property file ");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "repositoryName property is missing from the property file ");
+		}
+		repName = repName.trim();
+		String repURL = config.getProperty("repositoryURL");
+		if(repURL==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "repositoryURL property is missing from the property file ");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "repositoryURL property is missing from the property file ");
+		}
+		if(repURL.contains(",")){
+			repURLs = new ArrayList<>(Arrays.asList(repURL.trim().split(",")));
+		}else{
+			repURLs = new ArrayList<>();
+			repURLs.add(repURL);
+		}
+		repUserName = config.getProperty("repositoryUsername");
+		repPassword = config.getProperty("repositoryPassword");
+		if(repUserName==null || repPassword==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "repostoryUserName and respositoryPassword properties are required.");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "repostoryUserName and respositoryPassword properties are required.");
+		}
+		repUserName = repUserName.trim();
+		repPassword = repPassword.trim();
+		policyKeyID = config.getProperty("policyKeyID");
+		if(policyKeyID==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "policyKeyID property is missing from the property file ");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "policyKeyID property is missing from the property file ");
+		}
+		policyKeyID = policyKeyID.trim();
+		String syncF = config.getProperty("sync", "false").trim();
+		syncFlag = Boolean.parseBoolean(syncF);
+		if(syncFlag){
+			PolicyLogger.info("SYNC Flag is turned ON. DB will be given Priority.");
+		}
+		brmsdependencyversion = config.getProperty("brms.dependency.version");
+		if(brmsdependencyversion==null){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "brmsdependencyversion property is missing from the property file, Using default Version.");
+			brmsdependencyversion = DEFAULT_VERSION;
+		}
+		brmsdependencyversion = brmsdependencyversion.trim();
+		readGroups(config);
+		
+		// Setup Publisher
+		notificationType = config.getProperty("NOTIFICATION_TYPE");
+		if("dmaap".equalsIgnoreCase(notificationType)){
+			
+			LOGGER.info("Notification Type being used is DMaaP... creating instance of BusPublisher.");
+			// Setting up the Publisher for DMaaP MR
+			String dmaapServers = config.getProperty("NOTIFICATION_SERVERS");
+			pubTopic = config.getProperty("NOTIFICATION_TOPIC");
+			String aafLogin = config.getProperty("CLIENT_ID").trim();
+			String aafPassword = config.getProperty("CLIENT_KEY").trim();
+			
+			if(dmaapServers==null || pubTopic==null){
+				LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "DMaaP properties are missing from the property file ");
+				throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "DMaaP properties are missing from the property file ");
+			}
+			
+			dmaapServers = dmaapServers.trim();
+			pubTopic = pubTopic.trim();
+			
+			if(dmaapServers.contains(",")) {
+				dmaapList = new ArrayList<>(Arrays.asList(dmaapServers.split("\\s*,\\s*")));
+			} else {
+				dmaapList = new ArrayList<>();
+				dmaapList.add(dmaapServers);
+			}
+			
+			this.publisher = 
+					new BusPublisher.DmaapPublisherWrapper(this.dmaapList, 
+							                               this.pubTopic, 
+							                               aafLogin, 
+							                               aafPassword);
+			
+
+			String dDelay = config.getProperty("NOTIFICATION_DELAY");
+			if(dDelay!=null && !dDelay.isEmpty()){
+				dDelay = dDelay.trim();
+				try{
+					dmaapDelay = Long.parseLong(dDelay);
+				}catch (NumberFormatException e){
+					LOGGER.error("DMAAP_DELAY not a long format number" + e);
+				}
+			}
+			LOGGER.info("DMAAP BusPublisher is created.");
+			
+		} else {
+			LOGGER.info("Notification Type being used is UEB... creating instance of PublisherBuilder.");
+			// Setting up the Publisher for UEB
+			uebList = config.getProperty("NOTIFICATION_SERVERS");
+			pubTopic = config.getProperty("NOTIFICATION_TOPIC");
+			String apiKey = config.getProperty("UEB_API_KEY");
+			String apiSecret = config.getProperty("UEB_API_SECRET");
+			if(uebList==null || pubTopic==null){
+				LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "UEB properties are missing from the property file ");
+				throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "UEB properties are missing from the property file ");
+			}
+			uebList = uebList.trim();
+			pubTopic = pubTopic.trim();
+			pubBuilder = new CambriaClientBuilders.PublisherBuilder();
+			pubBuilder.usingHosts(uebList).onTopic(pubTopic);
+			if(apiKey!=null && !apiKey.isEmpty() && 
+					apiSecret!=null && !apiSecret.isEmpty()) {
+				apiKey= apiKey.trim();
+				apiSecret = apiSecret.trim();
+				pubBuilder.authenticatedBy(apiKey, apiSecret);
+			}
+			String uDelay = config.getProperty("NOTIFICATION_DELAY");
+			if(uDelay!=null && !uDelay.isEmpty()){
+				uDelay = uDelay.trim();
+				try{
+					uebDelay = Long.parseLong(uDelay);
+				}catch (NumberFormatException e){
+					LOGGER.error("UEB_DELAY not a long format number" + e);
+				}
+			}
+			LOGGER.info("UEB PublisherBuilder is created.");
+
+		}
+
+	}
+
+	/**
+	 * Will Initialize the variables required for BRMSPush. 
+	 */
+	public void initiate(boolean flag) {
+		modifiedGroups =  new HashMap<>();
+		controllers = new ArrayList<>();
+		try {
+			bm.updateNotification();
+		} catch (Exception e) {
+			LOGGER.error("Error while updating Notification: "  + e.getMessage());
+		}
+		if(flag) syncGroupInfo();
+	}
+
+	/**
+	 * Will Add rules to projects. Creates necessary folders if required. 
+	 */
+	public void addRule(String name, String rule, Map<String, String> responseAttributes) {
+		// 1 check the response Attributes and determine if this belongs to any projects. 
+		// 2 if not create folder
+		// 3 create pom. 
+		// 4 copy the rule. 
+		// 5 store the groups that have been updated. 
+		String kSessionName=null;
+		String selectedName = null;
+		if(!responseAttributes.isEmpty()){
+			// Pick selected Value
+			String userControllerName = null;
+			ArrayList<PEDependency> userDependencies = new ArrayList<>();
+			for(String key: responseAttributes.keySet()){
+				if(key.equals(policyKeyID)){
+					selectedName = responseAttributes.get(key);
+				}
+				//kmodule configurations
+				else if (key.equals("kSessionName")){
+					kSessionName=responseAttributes.get(key);
+				}
+				// Check User Specific values.
+                if (key.equals("$controller:")) {
+                    try {
+                        PEDependency dependency = PolicyUtils.jsonStringToObject(responseAttributes.get(key), PEDependency.class);
+                        userControllerName = key.replaceFirst("$controller:",""); 
+                        addToGroup(userControllerName, dependency);
+                    } catch (Exception e) {
+                        LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+"Error while resolving Controller: " + e);
+                    }
+
+                }
+                else if(key.equals("$dependency$")){
+                    String value = responseAttributes.get(key);
+                    if(value.startsWith("[") && value.endsWith("]")){
+                        value = value.substring(1, value.length()-1).trim();
+                        List<String> dependencyStrings = Arrays.asList(value.split("},{"));
+                        for(String dependencyString: dependencyStrings){
+                            try {
+                                userDependencies.add(PolicyUtils.jsonStringToObject(dependencyString, PEDependency.class));
+                            } catch (Exception e) {
+                                LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+"Error while resolving Dependencies: " + e);
+                            }
+                        }
+                    }
+                }
+			}
+			if(userControllerName!=null){
+				// Adding custom dependencies here. 
+                ArrayList<Object> values = groupMap.get(userControllerName);
+                values.add(userDependencies);
+                groupMap.put(userControllerName, values);
+                selectedName = userControllerName;
+            }
+		}
+		// If no Match then pick Default. 
+		if(selectedName==null){
+			selectedName = defaultName;
+		}
+		if (groupMap.containsKey(selectedName)) {
+			//If the key is not got as parameters set by the user, setting the default value for kSessionName as closedLoop
+			if(kSessionName==null){
+				if(selectedName==defaultName){
+					kSessionName="closedloop";
+				}else{
+					kSessionName= "closedloop-" + selectedName;
+				}
+			}
+			// create directories if missing.
+			manageProject(selectedName, kSessionName, name, rule);
+            addModifiedGroup(selectedName, "update"); // Will check for Create Later after generating the Pom.
+		}
+	}
+
+	private void syncGroupInfo() {
+		// Sync DB to JMemory.
+		EntityTransaction et = em.getTransaction();
+		et.begin();
+		Query query = em.createQuery("select b from BRMSGroupInfo AS b");
+		List<?> bList = query.getResultList();
+		if(bList.size()!=groupMap.size()){
+			for(Object value : bList){
+				BRMSGroupInfo brmsGroupInfo = (BRMSGroupInfo) value;
+				PEDependency dependency = new PEDependency();
+				dependency.setArtifactId(brmsGroupInfo.getArtifactId());
+				dependency.setGroupId(brmsGroupInfo.getGroupId());
+				dependency.setVersion(brmsGroupInfo.getVersion());
+				ArrayList<Object> values = new ArrayList<>();
+				values.add(dependency);
+				groupMap.put(brmsGroupInfo.getControllerName(), values);
+			}
+		}
+		query = em.createQuery("select g from BRMSPolicyInfo AS g");
+		bList = query.getResultList();
+		if(bList.size()!=policyMap.size()){
+			for(Object value: bList){
+				BRMSPolicyInfo brmsPolicyInfo = (BRMSPolicyInfo) value;
+				policyMap.put(brmsPolicyInfo.getPolicyName(), brmsPolicyInfo.getControllerName().getControllerName());
+			}
+		}
+		et.commit();
+		LOGGER.info("Updated Local Memory values with values from database.");
+	}
+
+	private void manageProject(String selectedName, String kSessionName, String name, String rule) {
+		// Check if the Project is in Sync. If not get the latest Version. 
+		syncProject(selectedName);
+		createProject(PROJECTSLOCATION + File.separator
+				+ getArtifactID(selectedName) + File.separator + "src"
+				+ File.separator + "main" + File.separator + "resources",
+				kSessionName);
+		copyDataToFile(
+				PROJECTSLOCATION + File.separator
+				+ getArtifactID(selectedName) + File.separator
+				+ "src" + File.separator + "main" + File.separator
+				+ "resources" + File.separator + "rules"
+				+ File.separator + name + ".drl", rule);
+		addToPolicy(name,selectedName);
+	}
+
+	/*
+	 * Add Policy to JMemory and DataBase. 
+	 */
+	private void addToPolicy(String policyName, String controllerName) {
+		policyMap.put(policyName, controllerName);
+		EntityTransaction et = em.getTransaction();
+		et.begin();
+		Query query = em.createQuery("select b from BRMSPolicyInfo as b where b.policyName = :pn");
+		query.setParameter("pn", policyName);
+		List<?> pList = query.getResultList();
+		boolean createFlag = false;
+		BRMSPolicyInfo brmsPolicyInfo = new BRMSPolicyInfo();
+		if(pList.size()>0){
+			// Already exists. 
+			brmsPolicyInfo = (BRMSPolicyInfo) pList.get(0);
+			if(!brmsPolicyInfo.getControllerName().getControllerName().equals(controllerName)){
+				createFlag = true;
+			}
+		}else{
+			createFlag = true;
+		}
+		if(createFlag){
+			query = em.createQuery("select b from BRMSGroupInfo as b where b.controllerName = :cn");
+			query.setParameter("cn", controllerName);
+			List<?> bList = query.getResultList();
+			BRMSGroupInfo brmsGroupInfo = new BRMSGroupInfo();
+			if(bList.size()>0){
+				brmsGroupInfo = (BRMSGroupInfo) bList.get(0);
+			}
+			brmsPolicyInfo.setPolicyName(policyName);
+			brmsPolicyInfo.setControllerName(brmsGroupInfo);
+			em.persist(brmsPolicyInfo);
+			em.flush();
+		}
+		et.commit();
+	}
+
+	private void syncProject(String selectedName) {
+		boolean projectExists = checkProject(selectedName);
+		if(projectExists){
+			String version = null;
+			version = getVersion(selectedName);
+			if(version==null){
+				LOGGER.error("Error getting local version for the given Controller Name:"+ selectedName+" going with Default value");
+				version = "0.1.0";
+			}
+			String nextVersion = incrementVersion(version);
+			boolean outOfSync = checkRemoteSync(selectedName, nextVersion);
+			if(!outOfSync){
+				return;
+			}
+		}
+		// We are out of Sync or Project is not Present. 
+		downloadProject(selectedName);
+	}
+
+	private void downloadProject(String selectedName) {
+		NexusArtifact artifact = getLatestArtifactFromNexus(selectedName);
+		if(artifact==null) return;
+		String dirName = getDirectoryName(selectedName);
+		URL website;
+		String fileName = "rule.jar";
+		try {
+			website = new URL(artifact.getResourceURI());
+			ReadableByteChannel rbc = Channels.newChannel(website.openStream());
+		    FileOutputStream fos = new FileOutputStream(fileName);
+		    fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+		    fos.close();
+		    extractJar(fileName, dirName);
+		    new File(fileName).delete();
+		} catch (IOException e) {
+			LOGGER.error("Error while downloading the project to File System. " + e.getMessage());
+		}
+	}
+
+	private void extractJar(String jarFileName, String artifactId) throws IOException{
+		JarFile jar = new JarFile(jarFileName);
+		Enumeration<?> enumEntries = jar.entries();
+		while (enumEntries.hasMoreElements()) {
+			JarEntry file = (JarEntry) enumEntries.nextElement();
+		    File f = null;
+		    String fileName = file.getName().substring(file.getName().lastIndexOf("/")+1);
+		    if(file.getName().endsWith(".drl")){
+		    	String path = PROJECTSLOCATION+ File.separator + artifactId + File.separator + "src"+ 
+				    	File.separator+ "main" + File.separator + "resources" + File.separator+ "rules"; 
+		    	new File(path).mkdirs();
+		    	if(syncFlag  && policyMap.containsKey(fileName.replace(".drl", ""))){
+		    		f = new File(path + File.separator + fileName);
+		    	}else{
+		    		f = new File(path + File.separator + fileName);
+		    	}
+		    }else if(file.getName().endsWith("pom.xml")){
+		    	String path = PROJECTSLOCATION+ File.separator + artifactId; 
+		    	new File(path).mkdirs();
+		    	f = new File(path + File.separator + fileName);
+		    }else if(file.getName().endsWith("kmodule.xml")){
+		    	String path = PROJECTSLOCATION+ File.separator + artifactId + File.separator + "src"+ 
+				    	File.separator+ "main" + File.separator + "resources" + File.separator+ "META-INF"; 
+		    	new File(path).mkdirs();
+		    	f = new File(path + File.separator + fileName);
+		    }
+		    if(f!=null){
+		    	InputStream is = jar.getInputStream(file);
+			    FileOutputStream fos = new FileOutputStream(f);
+			    while (is.available() > 0) {
+			        fos.write(is.read());
+			    }
+			    fos.close();
+			    is.close();
+			    f=null;
+			    LOGGER.info(fileName + " Created..");
+		    }
+		}
+		jar.close();
+	}
+
+	private NexusArtifact getLatestArtifactFromNexus(String selectedName) {
+		List<NexusArtifact> artifacts = getArtifactFromNexus(selectedName, null);
+		int bigNum = 0;
+        int smallNum = 0;
+        NexusArtifact result = null;
+        for (NexusArtifact artifact : artifacts) {
+            int majorVal = Integer.parseInt(artifact.getVersion().substring(0, artifact.getVersion().indexOf(".")));
+            int minorVal = Integer.parseInt(artifact.getVersion().substring(artifact.getVersion().indexOf(".")+1,artifact.getVersion().lastIndexOf(".")));
+            if(majorVal>bigNum){
+                bigNum = majorVal;
+                smallNum = minorVal;
+            }
+            if((bigNum==majorVal)&&(minorVal>smallNum)){
+                smallNum = minorVal;
+            }
+            if(bigNum==majorVal && minorVal==smallNum){
+                result = artifact;
+            }
+        }
+        return additionalNexusLatestCheck(selectedName, result);
+	}
+	
+	// Additional Check due to Limitations from Nexus API to check if the artifact is the latest.
+	private NexusArtifact additionalNexusLatestCheck(String selectedName, NexusArtifact result) {
+		String nextVersion = incrementVersion(result.getVersion());
+        List<NexusArtifact> artifact = getArtifactFromNexus(selectedName, nextVersion);
+        return artifact.isEmpty()? result: additionalNexusLatestCheck(selectedName, artifact.get(0));
+	}
+
+	private boolean checkRemoteSync(String selectedName, String version) {
+		List<NexusArtifact> artifacts = getArtifactFromNexus(selectedName, version);
+		return (artifacts.size()==0) ? false: true;
+	}
+
+	private List<NexusArtifact> getArtifactFromNexus(String selectedName, String version) {
+		final NexusClient client = new NexusRestClient();
+		int i = 0 ;
+		boolean flag = false;
+		while(i<repURLs.size()){
+			try {
+				String repURL = repURLs.get(0);
+				client.connect(repURL.substring(0, repURL.indexOf(repURL.split(":[0-9]+\\/nexus")[1])), repUserName, repPassword);
+				final NexusArtifact template = new NexusArtifact();
+				template.setGroupId(getGroupID(selectedName));
+				template.setArtifactId(getArtifactID(selectedName));
+				if(version!=null){
+					template.setVersion(version);
+				}
+				List<NexusArtifact> resultList = client.searchByGAV(template);
+				if(resultList!=null){
+					flag = true;
+					return resultList;
+				}
+			} catch (NexusClientException | NexusConnectionException | NullPointerException e) {
+				LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "Connection to remote Nexus has failed. " +e.getMessage());
+			} finally {
+				try {
+					client.disconnect();
+				} catch (NexusClientException | NexusConnectionException e) {
+					LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "failed to disconnect Connection from Nexus." +e.getMessage());
+				}
+				if(!flag){
+					Collections.rotate(repURLs, -1);
+					i++;
+				}
+			}
+		}
+		return new ArrayList<>();
+	}
+
+	private void setVersion(String selectedName) {
+		String newVersion = "0.1.0";
+		createFlag = false;
+		NexusArtifact artifact = getLatestArtifactFromNexus(selectedName);
+		if(artifact!=null){
+			newVersion = incrementVersion(artifact.getVersion());
+		}
+		if(newVersion.equals("0.1.0")){
+			createFlag = true;
+		}
+		setVersion(newVersion, selectedName);
+        LOGGER.info("Controller: " + selectedName + "is on version: " + newVersion);
+	}
+
+	private String incrementVersion(String version) {
+		int majorVal = Integer.parseInt(version.substring(0, version.indexOf(".")));
+		int minorVal = Integer.parseInt(version.substring(version.indexOf(".")+1,version.lastIndexOf(".")));
+		if (minorVal >= 9) {
+            majorVal += 1;
+            minorVal = 0;
+        } else {
+            minorVal += 1;
+        }
+		return majorVal + "." + minorVal + version.substring(version.lastIndexOf("."));
+	}
+
+	private boolean checkProject(String selectedName) {
+		return new File(PROJECTSLOCATION + File.separator + getDirectoryName(selectedName)).exists();
+	}
+
+	private String getDirectoryName(String selectedName) {
+		return getArtifactID(selectedName);
+	}
+
+	/**
+	 * Will Push policies to the PolicyRepo. 
+	 * 
+	 * @param notificationType <String> type of notification Type. 
+	 * @throws PolicyException 
+	 */
+	public void pushRules() throws PolicyException{
+		// Check how many groups have been updated. 
+		// Invoke their Maven process.
+		try {
+			im.startTransaction();
+		} catch (AdministrativeStateException e) {
+			LOGGER.error("Error while starting Transaction " + e);
+		} catch (Exception e) {
+			LOGGER.error("Error while starting Transaction " + e);
+		}
+		if(!modifiedGroups.isEmpty()){
+			Boolean flag = false;
+			for(String group: modifiedGroups.keySet()){
+				InvocationResult result = null;
+				try{
+					InvocationRequest request = new DefaultInvocationRequest();
+					setVersion(group);
+					createPom(group);
+					request.setPomFile(new File(PROJECTSLOCATION+File.separator+getArtifactID(group)+File.separator+"pom.xml"));
+					request.setGoals(Arrays.asList(GOALS));
+					Invoker invoker = new DefaultInvoker();
+					result = invoker.execute(request);
+					if(result.getExecutionException()!=null){
+						LOGGER.error(result.getExecutionException());
+					}else if(result.getExitCode()!=0){
+						LOGGER.error("Maven Invocation failure..!");
+					}
+				}catch(Exception e){
+					LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+"Maven Invocation issue for "+getArtifactID(group) + e.getMessage());
+				}
+				if(result!=null && result.getExitCode()==0){
+					LOGGER.info("Build Completed..!");
+					if (createFlag) {
+						addNotification(group, "create");
+					}else{
+						addNotification(group, modifiedGroups.get(group));
+					}
+					flag = true;
+				}else{
+					throw new PolicyException(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Maven Invocation failure!");
+				}
+			}
+			if(flag){
+				sendNotification(controllers);
+	        }
+		}
+		if(im!=null){
+			im.endTransaction();
+		}
+	}
+
+	/**
+	 * Removes a Rule from Rule Projects. 
+	 */
+	public void removeRule(String name){
+		String controllerName = getGroupName(name);
+		if(controllerName==null){
+			LOGGER.info("Error finding the controllerName for the given Policy: " + name);
+			return;
+		}
+		syncProject(controllerName);
+		getNameAndSetRemove(controllerName, name);
+	}
+
+	private String getGroupName(String name) {
+		if(policyMap.containsKey(name)){
+			return policyMap.get(name);
+		}else{
+			syncGroupInfo();
+			return (policyMap.containsKey(name)) ? policyMap.get(name):null;
+		}
+	}
+
+	private void addModifiedGroup(String controllerName, String operation) {
+        if(controllerName!=null){
+            modifiedGroups.put(controllerName, operation);
+        }
+    }
+
+	private void addNotification(String controllerName, String operation) {
+        ControllerPOJO controllerPOJO = new ControllerPOJO();
+        controllerPOJO.setName(controllerName);
+        controllerPOJO.setOperation(operation);
+        HashMap<String, String> drools = new HashMap<>();
+        drools.put("groupId", getGroupID(controllerName));
+        drools.put("artifactId", getArtifactID(controllerName));
+        drools.put("version", getVersion(controllerName));
+        controllerPOJO.setDrools(drools);
+        controllers.add(controllerPOJO);
+        try {
+        	LOGGER.debug("Notification added: "
+        			+ PolicyUtils.objectToJsonString(controllerPOJO));
+        } catch (JsonProcessingException e) {
+        	LOGGER.error(MessageCodes.ERROR_SCHEMA_INVALID
+        			+ "Json Processing Error " + e);
+        }
+    }
+
+	private void removedRuleModifiedGroup(String controllerName){
+		// This will be sending Notification to PDPD directly to Lock
+		ControllerPOJO controllerPOJO = new ControllerPOJO();
+		controllerPOJO.setName(controllerName);
+		controllerPOJO.setOperation("lock");
+		List<ControllerPOJO> controllers = new ArrayList<>();
+		controllers.add(controllerPOJO);
+		sendNotification(controllers);
+	}
+
+	private void sendNotification(List<ControllerPOJO> controllers){
+		NotificationPOJO notification = new NotificationPOJO();
+		String requestId = UUID.randomUUID().toString();
+		LOGGER.info("Generating notification RequestID : " + requestId);
+		notification.setRequestID(requestId);
+		notification.setEntity("controller");
+		notification.setControllers(controllers);
+		try {
+			String notificationJson = PolicyUtils.objectToJsonString(notification);
+			LOGGER.info("Sending Notification :\n" + notificationJson);
+			sendMessage(notificationJson);
+		} catch (Exception e) {
+			LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error while sending notification to PDP-D " + e.getMessage());
+		}
+	}
+
+	private void sendMessage(String message) throws IOException, GeneralSecurityException, InterruptedException {
+		
+		if("dmaap".equalsIgnoreCase(notificationType)) {
+			// Sending Message through DMaaP Message Router
+			LOGGER.debug("DMAAP Publishing Message");
+			
+			publisher.send( "MyPartitionKey", message);
+			
+			LOGGER.debug("Message Published on DMaaP :" + dmaapList.get(0) + "for Topic: " + pubTopic);
+			
+			Thread.sleep(dmaapDelay);
+			publisher.close();
+		} else {
+			// Sending Message through UEB interface.
+			LOGGER.debug("UEB Publishing Message");
+			
+			CambriaBatchingPublisher pub = pubBuilder.build();
+			pub.send( "MyPartitionKey", message);
+			
+			final List<?> stuck = pub.close ( uebDelay, TimeUnit.SECONDS );
+			if ( stuck.size () > 0 ) {
+				LOGGER.error ( stuck.size() + " messages unsent" );
+			}else {
+				LOGGER.debug ( "Clean exit; Message Published on UEB : " + uebList + "for Topic: " + pubTopic );
+			}
+		}
+
+	}
+
+	private void createPom(String name) {
+        Model model = new Model();
+        model.setModelVersion("4.0.0");
+        model.setGroupId(getGroupID(name));
+        model.setArtifactId(getArtifactID(name));
+        model.setVersion(getVersion(name));
+        model.setName(name);
+		DistributionManagement distributionManagement = new DistributionManagement();
+		DeploymentRepository repository = new DeploymentRepository();
+		repository.setId(repID);
+		repository.setName(repName);
+		repository.setUrl(repURLs.get(0));
+		distributionManagement.setRepository(repository);
+		model.setDistributionManagement(distributionManagement);
+		// Dependency Management goes here. 
+		List<Dependency> dependencyList= new ArrayList<>();
+		if(groupMap.get(name).size()>1){
+			@SuppressWarnings("unchecked")
+            ArrayList<PEDependency> dependencies = (ArrayList<PEDependency>) groupMap.get(name).get(1);
+            for(PEDependency dependency: dependencies){
+                dependencyList.add(dependency.getDependency());
+            }
+		}else{
+			// Add Default dependencies. 
+			dependencyList = getDependencies(name);
+        }
+		model.setDependencies(dependencyList);
+		Writer writer = null;
+		try{
+			writer = WriterFactory.newXmlWriter(new File(PROJECTSLOCATION
+					+ File.separator + getArtifactID(name) + File.separator
+					+ "pom.xml"));
+			MavenXpp3Writer pomWriter = new MavenXpp3Writer();
+			pomWriter.write(writer, model);
+		}catch(Exception e){
+			LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW
+					+ "Error while creating POM for " + getArtifactID(name)
+					+ e.getMessage());
+		}finally{
+			IOUtil.close(writer);
+		}
+	}
+	
+	private List<Dependency> getDependencies(String controllerName) {
+		// Read the Dependency Information from property file. 
+		Path file = Paths.get(DEPENDENCY_FILE);
+		if(!Files.notExists(file)){
+			try {
+				String dependencyJSON = new String(Files.readAllBytes(file), StandardCharsets.UTF_8);
+				DependencyInfo dependencyInfo = PolicyUtils.jsonStringToObject(dependencyJSON, DependencyInfo.class);
+				String controller = "default";
+				if(dependencyInfo.getDependencies().containsKey(controllerName)){
+					controller = controllerName;
+				}
+				List<Dependency> dependencyList = new ArrayList<>();
+				for(PEDependency dependency: dependencyInfo.getDependencies().get(controller)){
+					dependencyList.add(dependency.getDependency());
+				}
+				return dependencyList;
+			} catch (IOException| NullPointerException e) {
+				LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW
+						+ "Error while getting dependecy Information for controller: " + controllerName
+						+ e.getMessage());
+			}
+		}
+		return defaultDependencies(controllerName);
+	}
+	
+	// Default Dependency Section. Can be changed as required. 
+	public List<Dependency> defaultDependencies(String controllerName) {
+		
+		List<Dependency> dependencyList = new ArrayList<>();
+		String version= StringEscapeUtils.escapeJava(brmsdependencyversion);
+
+		Dependency demoDependency = new Dependency();
+		demoDependency.setGroupId("org.onap.policy.drools-applications");
+		demoDependency.setArtifactId("demo");
+		demoDependency.setVersion(version);
+		dependencyList.add(demoDependency);
+
+		Dependency controlloopDependency = new Dependency();
+		controlloopDependency.setGroupId("org.onap.policy.drools-applications");
+		controlloopDependency.setArtifactId("events");
+		controlloopDependency.setVersion(version);
+		dependencyList.add(controlloopDependency);
+
+		Dependency restDependency = new Dependency();
+		restDependency.setGroupId("org.onap.policy.drools-applications");
+		restDependency.setArtifactId("rest");
+		restDependency.setVersion(version);
+		dependencyList.add(restDependency);
+
+		Dependency appcDependency = new Dependency();
+		appcDependency.setGroupId("org.onap.policy.drools-applications");
+		appcDependency.setArtifactId("appc");
+		appcDependency.setVersion(version);
+		dependencyList.add(appcDependency);
+
+		Dependency aaiDependency = new Dependency();
+		aaiDependency.setGroupId("org.onap.policy.drools-applications");
+		aaiDependency.setArtifactId("aai");
+		aaiDependency.setVersion(version);
+		dependencyList.add(aaiDependency);
+
+		Dependency msoDependency = new Dependency();
+		msoDependency.setGroupId("org.onap.policy.drools-applications");
+		msoDependency.setArtifactId("mso");
+		msoDependency.setVersion(version);
+		dependencyList.add(msoDependency);
+
+		Dependency trafficgeneratorDependency = new Dependency();
+		trafficgeneratorDependency.setGroupId("org.onap.policy.drools-applications");
+		trafficgeneratorDependency.setArtifactId("trafficgenerator");
+		trafficgeneratorDependency.setVersion(version);	
+		dependencyList.add(trafficgeneratorDependency);
+		return dependencyList;
+	}
+
+	private void createProject(String path,String ksessionName){
+		new File(path+File.separator+"rules").mkdirs();
+		new File(path+File.separator+"META-INF").mkdirs();
+		if(!Files.exists(Paths.get(path+File.separator+"META-INF"+File.separator+"kmodule.xml"))){
+			// Hard coding XML for PDP Drools to accept our Rules. 
+			String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "\n"+  
+					"<kmodule xmlns=\"http://jboss.org/kie/6.0.0/kmodule\">" +"\n"+
+					"<kbase name=\"rules\" packages=\"rules\">" + "\n" +
+					"<ksession name=\""+ ksessionName +"\"/>"+ "\n" + 
+					"</kbase></kmodule>";
+			copyDataToFile(path+File.separator+"META-INF"+File.separator+"kmodule.xml", xml);
+		}
+	}
+
+	private void copyDataToFile(String file, String rule) {
+		try{
+			FileUtils.writeStringToFile(new File(file), rule);
+		} catch (Exception e) {
+			LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW+"Error while creating Rule for " + file + e.getMessage());
+		}
+	}
+
+	private void readGroups(Properties config) throws PolicyException{
+		String[] groupNames = null;
+		if(config.getProperty("groupNames").contains(",")){
+			groupNames = config.getProperty("groupNames").replaceAll(" ", "").split(",");
+		}else{
+			groupNames = new String[]{config.getProperty("groupNames").replaceAll(" ", "")};
+		}
+		if(groupNames==null || groupNames.length==0){
+			LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "groupNames property is missing or empty from the property file ");
+			throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "groupNames property is missing or empty from the property file ");
+		}
+		groupMap = new HashMap<>();
+		for(int counter=0; counter < groupNames.length ;counter++){
+			String name = groupNames[counter];
+			String groupID = config.getProperty(name+".groupID");
+			if(groupID==null){
+				LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + name+".groupID property is missing from the property file ");
+				throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + name+".groupID property is missing from the property file ");
+			}
+			String artifactID = config.getProperty(name+".artifactID");
+			if(artifactID==null){
+				LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + name+".artifactID property is missing from the property file ");
+				throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + name+".artifactID property is missing from the property file ");
+			}
+			PEDependency dependency = new PEDependency();
+			dependency.setArtifactId(artifactID);
+			dependency.setGroupId(groupID);
+			// Add to list if we got all
+			addToGroup(name,dependency);
+		}
+	}
+
+	private void addToGroup(String name, PEDependency dependency) {
+		ArrayList<Object> values = new ArrayList<>();
+        values.add(dependency);
+		groupMap.put(name, values);
+		EntityTransaction et = em.getTransaction();
+		et.begin();
+		Query query = em.createQuery("select b from BRMSGroupInfo as b where b.controllerName = :cn");
+		query.setParameter("cn", name);
+		List<?> groupList = query.getResultList();
+		BRMSGroupInfo brmsGroupInfo = null;
+		if(groupList.size()>0){
+			LOGGER.info("Controller name already Existing in DB. Will be updating the DB Values" + name);
+			brmsGroupInfo = (BRMSGroupInfo) groupList.get(0);
+		}
+		if(brmsGroupInfo==null){
+			brmsGroupInfo = new BRMSGroupInfo();
+		}
+		brmsGroupInfo.setControllerName(name);
+		brmsGroupInfo.setGroupId(dependency.getGroupId());
+		brmsGroupInfo.setArtifactId(dependency.getArtifactId());
+		brmsGroupInfo.setVersion(dependency.getVersion());
+		em.persist(brmsGroupInfo);
+		em.flush();
+		et.commit();
+	}
+
+	private String getArtifactID(String name){
+        return ((PEDependency) groupMap.get(name).get(0)).getArtifactId();
+    }
+    
+    private String getGroupID(String name){
+        return ((PEDependency) groupMap.get(name).get(0)).getGroupId();
+    }
+    
+    private String getVersion(String name){
+        return ((PEDependency) groupMap.get(name).get(0)).getVersion();
+    }
+
+    private void getNameAndSetRemove(String controllerName, String policyName) {
+        String artifactName = getArtifactID(controllerName);
+        String ruleFolder= PROJECTSLOCATION + File.separator
+                + artifactName + File.separator + "src"
+                + File.separator + "main" + File.separator
+                + "resources" + File.separator + "rules";
+        File file = new File(ruleFolder+File.separator+ policyName +".drl");
+        if(file.delete()){
+    		LOGGER.info("Deleted File.. " + file.getAbsolutePath());
+    		removePolicyFromGroup(policyName, controllerName);
+        }
+        if(new File(ruleFolder).listFiles().length == 0) {
+            removedRuleModifiedGroup(controllerName);
+        } else {
+            // This is an update in terms of PDPD.
+            addModifiedGroup(controllerName, "update");
+        }
+    }
+	
+    // Removes Policy from Memory and Database. 
+ 	private void removePolicyFromGroup(String policyName, String controllerName) {
+ 		policyMap.remove(policyName);
+ 		EntityTransaction et = em.getTransaction();
+ 		et.begin();
+ 		Query query = em.createQuery("select b from BRMSPolicyInfo as b where b.policyName = :pn");
+ 		query.setParameter("pn", policyName);
+ 		List<?> pList = query.getResultList();
+ 		BRMSPolicyInfo brmsPolicyInfo = new BRMSPolicyInfo();
+ 		if(pList.size()>0){
+ 			// Already exists. 
+ 			brmsPolicyInfo = (BRMSPolicyInfo) pList.get(0);
+ 			if(brmsPolicyInfo.getControllerName().getControllerName().equals(controllerName)){
+ 				em.remove(brmsPolicyInfo);
+ 				em.flush();
+ 			}
+ 		}
+ 		et.commit();
+ 	}
+ 	
+	private void setVersion(String newVersion, String controllerName) {
+        PEDependency userController = (PEDependency) groupMap.get(controllerName).get(0);
+        userController.setVersion(newVersion);
+        groupMap.get(controllerName).set(0, userController);
+    }
+
+	// Return BackUpMonitor 
+	public static BackUpMonitor getBackUpMonitor(){
+		return bm;
+	}
+	
+	public void rotateURLs() {
+		if(repURLs!=null){
+			Collections.rotate(repURLs, -1);
+		}
+	}
+
+	public int URLListSize() {
+		if(repURLs!=null){
+			return repURLs.size();
+		}else return 0;
+	}
+}
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/ControllerPOJO.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/ControllerPOJO.java
new file mode 100644
index 000000000..5a0679c29
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/ControllerPOJO.java
@@ -0,0 +1,52 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.brmsInterface;
+
+import java.util.Map;
+
+/**
+ * POJO for controller information. 
+ * 
+ */
+public class ControllerPOJO {
+	private String name;
+	private Map<String,String> drools;
+	private String operation;
+	public String getName() {
+		return name;
+	}
+	public void setName(String name) {
+		this.name = name;
+	}
+	public Map<String,String> getDrools() {
+		return drools;
+	}
+	public void setDrools(Map<String,String> drools) {
+		this.drools = drools;
+	}
+	public String getOperation() {
+		return operation;
+	}
+	public void setOperation(String operation) {
+		this.operation = operation;
+	}
+}
+
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/NotificationPOJO.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/NotificationPOJO.java
new file mode 100644
index 000000000..75bbe8a4e
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/NotificationPOJO.java
@@ -0,0 +1,52 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.brmsInterface;
+
+import java.util.List;
+
+/**
+ * This POJO will be transformed to JSON for Notification Purposes.  
+ * 
+ */
+public class NotificationPOJO {
+	private String requestID;
+	private String entity;
+	private List<ControllerPOJO> controllers;
+	public String getRequestID() {
+		return requestID;
+	}
+	public void setRequestID(String requestID) {
+		this.requestID = requestID;
+	}
+	public String getEntity() {
+		return entity;
+	}
+	public void setEntity(String entity) {
+		this.entity = entity;
+	}
+	public List<ControllerPOJO> getControllers() {
+		return controllers;
+	}
+	public void setControllers(List<ControllerPOJO> controllers) {
+		this.controllers = controllers;
+	}
+	
+}
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/BRMSGroupInfo.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/BRMSGroupInfo.java
new file mode 100644
index 000000000..6b4a2bf85
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/BRMSGroupInfo.java
@@ -0,0 +1,75 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.policy.brmsInterface.jpa;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name="brmsgroup_info")
+public class BRMSGroupInfo{
+	
+	@Id
+	@Column(name = "controllerName", nullable=false, length=255)
+	private String controllerName;
+	
+	@Column(name = "groupId", nullable=false, length=255)
+	private String groupId;
+	
+	@Column(name = "artifactId", nullable=false, length=255)
+	private String artifactId;
+	
+	@Column(name = "version", length=255)
+	private String version;
+	
+	public String getControllerName() {
+		return controllerName;
+	}
+
+	public void setControllerName(String controllerName) {
+		this.controllerName = controllerName;
+	}
+
+	public String getGroupId() {
+		return groupId;
+	}
+
+	public void setGroupId(String groupId) {
+		this.groupId = groupId;
+	}
+
+	public String getArtifactId() {
+		return artifactId;
+	}
+
+	public void setArtifactId(String artifactId) {
+		this.artifactId = artifactId;
+	}
+
+	public String getVersion() {
+		return version;
+	}
+
+	public void setVersion(String version) {
+		this.version = version;
+	}
+}
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/BRMSPolicyInfo.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/BRMSPolicyInfo.java
new file mode 100644
index 000000000..c269e295a
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/BRMSPolicyInfo.java
@@ -0,0 +1,56 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.policy.brmsInterface.jpa;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+@Entity
+@Table(name="brmsgroup_policy")
+public class BRMSPolicyInfo {
+	
+	@Id
+	@Column(name="policyName")
+	private String policyName;
+	
+	@ManyToOne
+	@JoinColumn(name="controllerName")
+	private BRMSGroupInfo controllerName;
+	
+	public String getPolicyName() {
+		return policyName;
+	}
+
+	public void setPolicyName(String policyName) {
+		this.policyName = policyName;
+	}
+
+	public BRMSGroupInfo getControllerName() {
+		return controllerName;
+	}
+
+	public void setControllerName(BRMSGroupInfo controllerName) {
+		this.controllerName = controllerName;
+	}
+}
diff --git a/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/DependencyInfo.java b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/DependencyInfo.java
new file mode 100644
index 000000000..753de5219
--- /dev/null
+++ b/BRMSGateway/src/main/java/org/onap/policy/brmsInterface/jpa/DependencyInfo.java
@@ -0,0 +1,38 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP Policy Engine
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.policy.brmsInterface.jpa;
+
+import java.util.List;
+import java.util.Map;
+
+import org.onap.policy.api.PEDependency;
+
+public class DependencyInfo {
+	private Map<String, List<PEDependency>> dependencies;
+
+	public Map<String, List<PEDependency>> getDependencies() {
+		return dependencies;
+	}
+
+	public void setDependencies(Map<String, List<PEDependency>> dependencies) {
+		this.dependencies = dependencies;
+	}
+	
+}