/*- * ============LICENSE_START======================================================= * ONAP-PAP-REST * ================================================================================ * 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.pap.xacml.rest.util; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Query; import javax.servlet.ServletException; import org.onap.policy.rest.XacmlAdminAuthorization; import org.onap.policy.rest.jpa.Attribute; import org.onap.policy.rest.jpa.Datatype; import org.onap.policy.rest.jpa.FunctionDefinition; import org.onap.policy.rest.jpa.GlobalRoleSettings; import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeDesignatorType; import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeSelectorType; import org.onap.policy.common.logging.flexlogger.FlexLogger; import org.onap.policy.common.logging.flexlogger.Logger; public class JPAUtils { private static Logger LOGGER = FlexLogger.getLogger(JPAUtils.class); private static EntityManagerFactory emf; private static final Object mapAccess = new Object(); private static Map> mapDatatype2Function = null; private static Map mapID2Function = null; private static JPAUtils currentInstance = null; /** * Get an instance of a JPAUtils. It creates one if it does not exist. * Only one instance is allowed to be created per server. * @param emf The EntityFactoryManager to be used for database connections * @return The new instance of JPAUtils or throw exception if the given emf is null. * @throws IllegalStateException if a JPAUtils has already been constructed. Call getJPAUtilsInstance() to get this. */ public static JPAUtils getJPAUtilsInstance(EntityManagerFactory emf){ LOGGER.debug("getJPAUtilsInstance(EntityManagerFactory emf) as getJPAUtilsInstance("+emf+") called"); if(currentInstance == null){ if(emf != null){ currentInstance = new JPAUtils(emf); return currentInstance; } throw new IllegalStateException("The EntityManagerFactory is Null"); } return currentInstance; } private JPAUtils(EntityManagerFactory emf){ LOGGER.debug("JPAUtils(EntityManagerFactory emf) as JPAUtils("+emf+") called"); this.emf = emf; } /** * Gets the current instance of JPAUtils. * @return The instance of JPAUtils or throws exception if the given instance is null. * @throws IllegalStateException if a JPAUtils instance is null. Call getJPAUtilsInstance(EntityManagerFactory emf) to get this. */ public static JPAUtils getJPAUtilsInstance(){ LOGGER.debug("getJPAUtilsInstance() as getJPAUtilsInstance() called"); if(currentInstance != null){ return currentInstance; } throw new IllegalStateException("The JPAUtils.currentInstance is Null. Use getJPAUtilsInstance(EntityManagerFactory emf)"); } public static AttributeDesignatorType createDesignator(Attribute attribute) { AttributeDesignatorType designator = new AttributeDesignatorType(); designator.setAttributeId(attribute.getXacmlId()); if (attribute.getCategoryBean() != null) { designator.setCategory(attribute.getCategoryBean().getXacmlId()); } else { LOGGER.warn("No category bean"); } if (attribute.getDatatypeBean() != null) { designator.setDataType(attribute.getDatatypeBean().getXacmlId()); } else { LOGGER.warn("No datatype bean"); } designator.setIssuer(attribute.getIssuer()); designator.setMustBePresent(attribute.isMustBePresent()); return designator; } public static AttributeSelectorType createSelector(Attribute attribute) { AttributeSelectorType selector = new AttributeSelectorType(); selector.setContextSelectorId(attribute.getXacmlId()); selector.setPath(attribute.getSelectorPath()); if (attribute.getCategoryBean() != null) { selector.setCategory(attribute.getCategoryBean().getXacmlId()); } else { LOGGER.warn("No category bean"); } if (attribute.getDatatypeBean() != null) { selector.setDataType(attribute.getDatatypeBean().getXacmlId()); } else { LOGGER.warn("No datatype bean"); } selector.setMustBePresent(attribute.isMustBePresent()); return selector; } /** * Builds a map in memory of a functions return datatype to function definition. Useful in limiting the number * of SQL calls to DB especially when we don't expect these to change much. * * @return - A HashMap of Datatype JPA Container ID's to FunctionDefinition objects */ public Map> getFunctionDatatypeMap() { synchronized(mapAccess) { if (mapDatatype2Function == null||mapDatatype2Function.isEmpty()) { try { buildFunctionMaps(); } catch (ServletException e) { LOGGER.error("Exception Occured"+e); } } } return mapDatatype2Function; } public Map getFunctionIDMap() { synchronized(mapAccess) { if (mapID2Function == null||mapID2Function.isEmpty()) { try { buildFunctionMaps(); } catch (ServletException e) { LOGGER.error("Exception Occured"+e); } } } return mapID2Function; } private static void buildFunctionMaps() throws ServletException { mapDatatype2Function = new HashMap<>(); mapID2Function = new HashMap<>(); EntityManager em = emf.createEntityManager(); Query getFunctionDefinitions = em.createNamedQuery("FunctionDefinition.findAll"); List functionList = getFunctionDefinitions.getResultList(); for (Object id : functionList) { FunctionDefinition value = (FunctionDefinition)id; mapID2Function.put(value.getXacmlid(), value); if (mapDatatype2Function.containsKey(value.getDatatypeBean()) == false) { mapDatatype2Function.put(value.getDatatypeBean(), new ArrayList()); } mapDatatype2Function.get(value.getDatatypeBean()).add(value); } em.close(); } /** * Returns the lockdown value, in case of exception it is assumed that lockdown functionality * is not supported and returns false. * * * @throws ReadOnlyException * @throws ConversionException */ public boolean dbLockdownIgnoreErrors() { if (LOGGER.isTraceEnabled()) LOGGER.trace("ENTER"); boolean lockdown = false; try { lockdown = dbLockdown(); } catch (Exception e) { LOGGER.warn("Cannot access DB lockdown value", e); } return lockdown; } /** * Returns the lockdown value from the database. * * @throws ReadOnlyException * @throws ConversionException */ public boolean dbLockdown() throws IllegalAccessException { if (LOGGER.isTraceEnabled()) LOGGER.trace("ENTER"); EntityManager em = emf.createEntityManager(); Query globalRoleSettingsJPA = em.createNamedQuery("GlobalRoleSettings.findAll"); GlobalRoleSettings globalRoleSettings = (GlobalRoleSettings) globalRoleSettingsJPA.getSingleResult(); if (globalRoleSettings == null) { // this should not happen String msg = "NO GlobalSetttings for " + XacmlAdminAuthorization.Role.ROLE_SUPERADMIN.toString(); if (LOGGER.isErrorEnabled()) LOGGER.error(msg); throw new IllegalAccessException(msg); } if (!globalRoleSettings.getRole().equals(XacmlAdminAuthorization.Role.ROLE_SUPERADMIN.toString())) { String msg = "NOT FOUND db data for " + XacmlAdminAuthorization.Role.ROLE_SUPERADMIN.toString(); if (LOGGER.isErrorEnabled()) LOGGER.error(msg); throw new IllegalAccessException(msg); } return globalRoleSettings.isLockdown(); } }