[POLICY-73] replace openecomp for policy-engine
[policy/engine.git] / BRMSGateway / src / main / java / org / onap / policy / brmsInterface / BRMSPush.java
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 (file)
index 0000000..c244938
--- /dev/null
@@ -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;
+       }
+}