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.security.authentication.tproxy;
  
  import java.util.Collection;
  
  import org.apache.ambari.server.configuration.AmbariServerConfigurationCategory;
  import org.apache.ambari.server.configuration.AmbariServerConfigurationProvider;
  import org.apache.ambari.server.events.publishers.AmbariEventPublisher;
  import org.apache.ambari.server.orm.entities.AmbariConfigurationEntity;
  
  import com.google.inject.Inject;
  import com.google.inject.Singleton;
  import com.google.inject.persist.jpa.AmbariJpaPersistService;
  
  /**
   * Provider implementation for {@link AmbariTProxyConfiguration} objects.
   * Returned {@link AmbariTProxyConfiguration} instances are expected to contain the current values
   * for the tproxy-configuration category of the Ambari Server Configuration data.
   * <p>
   * It needs to be registered in the related GUICE module as a provider.
   * <p>
   * The provider receives notifications on CRUD operations related to the persisted resource and reloads the cached
   * configuration instance accordingly.
   *
   * @see AmbariServerConfigurationProvider
   */
  @Singleton
  public class AmbariTProxyConfigurationProvider extends AmbariServerConfigurationProvider<AmbariTProxyConfiguration> {
  
    @Inject
    public AmbariTProxyConfigurationProvider(AmbariEventPublisher ambariEventPublisher, AmbariJpaPersistService persistService) {
      super(AmbariServerConfigurationCategory.TPROXY_CONFIGURATION, ambariEventPublisher, persistService);
    }
  
    /**
     * Creates a AmbariTProxyConfiguration from a list of {@link AmbariConfigurationEntity}s.
     *
     * @param configurationEntities a list of {@link AmbariConfigurationEntity}s
     * @return a filled in {@link AmbariTProxyConfiguration}
     */
    @Override
    protected AmbariTProxyConfiguration loadInstance(Collection<AmbariConfigurationEntity> configurationEntities) {
      return new AmbariTProxyConfiguration(toProperties(configurationEntities));
    }
  }
  