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.view;
  
  import java.io.IOException;
  import java.net.MalformedURLException;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Set;
  import java.util.concurrent.ConcurrentHashMap;
  
  import jakarta.inject.Inject;
  import jakarta.inject.Singleton;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.ClusterNotFoundException;
  import org.apache.ambari.server.configuration.Configuration;
  import org.apache.ambari.server.orm.dao.RemoteAmbariClusterDAO;
  import org.apache.ambari.server.orm.entities.RemoteAmbariClusterEntity;
  import org.apache.ambari.server.orm.entities.RemoteAmbariClusterServiceEntity;
  import org.apache.ambari.view.AmbariHttpException;
  
  /**
   * Registry for Remote Ambari Cluster
   */
  @Singleton
  public class RemoteAmbariClusterRegistry {
  
    private ConcurrentHashMap<Long,RemoteAmbariCluster> clusterMap = new ConcurrentHashMap<>();
  
    @Inject
    private RemoteAmbariClusterDAO remoteAmbariClusterDAO;
  
    @Inject
    private Configuration configuration;
  
    public RemoteAmbariCluster get(Long clusterId) throws MalformedURLException, ClusterNotFoundException {
      RemoteAmbariCluster remoteAmbariCluster = clusterMap.get(clusterId);
      if (remoteAmbariCluster == null) {
        RemoteAmbariCluster cluster = getCluster(clusterId);
        RemoteAmbariCluster oldCluster = clusterMap.putIfAbsent(clusterId, cluster);
        if (oldCluster == null) remoteAmbariCluster = cluster;
        else remoteAmbariCluster = oldCluster;
      }
      return remoteAmbariCluster;
    }
  
  
    private RemoteAmbariCluster getCluster(Long clusterId) throws MalformedURLException, ClusterNotFoundException {
      RemoteAmbariClusterEntity remoteAmbariClusterEntity = remoteAmbariClusterDAO.findById(clusterId);
      if (remoteAmbariClusterEntity == null) {
        throw new ClusterNotFoundException(clusterId);
      }
      RemoteAmbariCluster remoteAmbariCluster = new RemoteAmbariCluster(remoteAmbariClusterEntity, configuration);
      return remoteAmbariCluster;
    }
  
    /**
     * Update the remote cluster properties
     *
     * @param entity
     */
    public void update(RemoteAmbariClusterEntity entity) {
      remoteAmbariClusterDAO.update(entity);
      clusterMap.remove(entity.getId());
    }
  
    /**
     * Remove the cluster entity from registry and database
     *
     * @param entity
     */
    public void delete(RemoteAmbariClusterEntity entity) {
      remoteAmbariClusterDAO.delete(entity);
      clusterMap.remove(entity.getId());
    }
  
    /**
     * Save Remote Cluster Entity after setting services.
     *
     * @param entity
     * @param update
     * @throws IOException
     * @throws AmbariHttpException
     */
    public void saveOrUpdate(RemoteAmbariClusterEntity entity, boolean update) throws IOException, AmbariHttpException {
  
      RemoteAmbariCluster cluster = new RemoteAmbariCluster(entity, configuration);
      Set<String> services = cluster.getServices();
  
      if (!cluster.isAmbariOrClusterAdmin()) {
        throw new AmbariException("User must be Ambari or Cluster Adminstrator.");
      }
  
      Collection<RemoteAmbariClusterServiceEntity> serviceEntities = new ArrayList<>();
  
      for (String service : services) {
        RemoteAmbariClusterServiceEntity serviceEntity = new RemoteAmbariClusterServiceEntity();
        serviceEntity.setServiceName(service);
        serviceEntity.setCluster(entity);
        serviceEntities.add(serviceEntity);
      }
  
      entity.setServices(serviceEntities);
  
      if (update) {
        update(entity);
      } else {
        remoteAmbariClusterDAO.save(entity);
      }
    }
  
  }
  