content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  package org.apache.ambari.server.api.services.persistence;
  
  import java.util.EnumSet;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.api.resources.ResourceInstance;
  import org.apache.ambari.server.api.services.NamedPropertySet;
  import org.apache.ambari.server.api.services.RequestBody;
  import org.apache.ambari.server.controller.spi.ClusterController;
  import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
  import org.apache.ambari.server.controller.spi.NoSuchResourceException;
  import org.apache.ambari.server.controller.spi.Request;
  import org.apache.ambari.server.controller.spi.RequestStatus;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.controller.spi.ResourceAlreadyExistsException;
  import org.apache.ambari.server.controller.spi.Schema;
  import org.apache.ambari.server.controller.spi.SystemException;
  import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
  import org.apache.ambari.server.controller.utilities.PropertyHelper;
  import org.apache.ambari.server.security.authorization.AuthorizationException;
  import org.apache.ambari.server.security.authorization.AuthorizationHelper;
  import org.apache.ambari.server.security.authorization.ResourceType;
  import org.apache.ambari.server.security.authorization.RoleAuthorization;
  
  /**
   * Persistence Manager implementation.
   */
  public class PersistenceManagerImpl implements PersistenceManager {
  
    /**
     * Cluster Controller reference.
     */
    private ClusterController m_controller;
  
    /**
     * Constructor.
     *
     * @param controller  the cluster controller
     */
    public PersistenceManagerImpl(ClusterController controller) {
      m_controller = controller;
    }
  
    @Override
    public RequestStatus create(ResourceInstance resource, RequestBody requestBody)
            throws UnsupportedPropertyException,
            SystemException,
            ResourceAlreadyExistsException,
            NoSuchParentResourceException {
  
      if (!AuthorizationHelper.isAuthorized(ResourceType.CLUSTER, null,
        EnumSet.of(RoleAuthorization.CLUSTER_MANAGE_USER_PERSISTED_DATA))) {
        throw new AuthorizationException("The authenticated user does not have authorization " +
          "to create/store user persisted data.");
      }
  
      if (resource != null) {
  
        Map<Resource.Type, String> mapResourceIds = resource.getKeyValueMap();
        Resource.Type type = resource.getResourceDefinition().getType();
        Schema schema = m_controller.getSchema(type);
  
        Set<NamedPropertySet> setProperties = requestBody.getNamedPropertySets();
        if (setProperties.isEmpty()) {
          requestBody.addPropertySet(new NamedPropertySet("", new HashMap<>()));
        }
  
        for (NamedPropertySet propertySet : setProperties) {
          for (Map.Entry<Resource.Type, String> entry : mapResourceIds.entrySet()) {
            Map<String, Object> mapProperties = propertySet.getProperties();
            String property = schema.getKeyPropertyId(entry.getKey());
            if (!mapProperties.containsKey(property)) {
              mapProperties.put(property, entry.getValue());
            }
          }
        }
        return m_controller.createResources(type, createControllerRequest(requestBody));
      } else {
        throw new NoSuchParentResourceException("Resource is null");
      }
    }
  
    @Override
    public RequestStatus update(ResourceInstance resource, RequestBody requestBody)
        throws UnsupportedPropertyException, SystemException, NoSuchParentResourceException, NoSuchResourceException {
  
      if (!AuthorizationHelper.isAuthorized(ResourceType.CLUSTER, null,
              EnumSet.of(RoleAuthorization.CLUSTER_MANAGE_USER_PERSISTED_DATA))) {
        throw new AuthorizationException("The authenticated user does not have authorization " +
                "to update/store user persisted data.");
      }
  
      Map<Resource.Type, String> mapResourceIds = resource.getKeyValueMap();
      Resource.Type type = resource.getResourceDefinition().getType();
      Schema schema = m_controller.getSchema(type);
  
      Set<NamedPropertySet> setProperties = requestBody.getNamedPropertySets();
  
      for (NamedPropertySet propertySet : setProperties) {
        for (Map.Entry<Resource.Type, String> entry : mapResourceIds.entrySet()) {
          if (entry.getValue() != null) {
            Map<String, Object> mapProperties = propertySet.getProperties();
            String property = schema.getKeyPropertyId(entry.getKey());
            if (!mapProperties.containsKey(property)) {
              mapProperties.put(property, entry.getValue());
            }
          }
        }
      }
  
      return m_controller.updateResources(type, createControllerRequest(requestBody), resource.getQuery().getPredicate());
    }
  
    @Override
    public RequestStatus delete(ResourceInstance resource, RequestBody requestBody)
        throws UnsupportedPropertyException, SystemException, NoSuchParentResourceException, NoSuchResourceException {
      //todo: need to account for multiple resources and user predicate
      if (!AuthorizationHelper.isAuthorized(ResourceType.CLUSTER, null,
              EnumSet.of(RoleAuthorization.CLUSTER_MANAGE_USER_PERSISTED_DATA))) {
        throw new AuthorizationException("The authenticated user does not have authorization " +
                "to delete/store user persisted data.");
      }
  
      return m_controller.deleteResources(resource.getResourceDefinition().getType(),
          createControllerRequest(requestBody), resource.getQuery().getPredicate());
  
    }
  
    protected Request createControllerRequest(RequestBody body) {
      return PropertyHelper.getCreateRequest(body.getPropertySets(), body.getRequestInfoProperties());
    }
  }
  