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.orm.dao;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  import jakarta.persistence.EntityManager;
  import jakarta.persistence.NoResultException;
  import jakarta.persistence.TypedQuery;
  
  import org.apache.ambari.server.orm.RequiresSession;
  import org.apache.ambari.server.orm.entities.HostComponentDesiredStateEntity;
  import org.apache.ambari.server.orm.entities.HostEntity;
  import org.apache.ambari.server.orm.helpers.SQLConstants;
  import org.apache.ambari.server.orm.helpers.SQLOperations;
  
  import com.google.common.collect.Lists;
  import com.google.inject.Inject;
  import com.google.inject.Provider;
  import com.google.inject.Singleton;
  import com.google.inject.persist.Transactional;
  
  @Singleton
  public class HostComponentDesiredStateDAO {
    @Inject
    Provider<EntityManager> entityManagerProvider;
  
    @Inject
    HostDAO hostDAO;
  
    @Inject
    DaoUtils daoUtils;
  
    @RequiresSession
    public HostComponentDesiredStateEntity findById(long id) {
      return entityManagerProvider.get().find(HostComponentDesiredStateEntity.class, id);
    }
  
    @RequiresSession
    public List<HostComponentDesiredStateEntity> findAll() {
      final TypedQuery<HostComponentDesiredStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentDesiredStateEntity.findAll", HostComponentDesiredStateEntity.class);
      try {
        return query.getResultList();
      } catch (NoResultException ignored) {
      }
      return null;
    }
  
    /**
     * Retrieve the single Host Component Desired State for the given unique service, component, and host.
     *
     * @param serviceName Service Name
     * @param componentName Component Name
     * @param hostName Host Name
     * @return Return all of the Host Component States that match the criteria.
     */
    @RequiresSession
    public HostComponentDesiredStateEntity findByServiceComponentAndHost(String serviceName, String componentName, String hostName) {
      final TypedQuery<HostComponentDesiredStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentDesiredStateEntity.findByServiceComponentAndHost", HostComponentDesiredStateEntity.class);
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
      query.setParameter("hostName", hostName);
  
      return daoUtils.selectSingle(query);
    }
  
    /**
     * Retrieve the single Host Component Desired State for the given unique cluster, service, component, and host.
     *
     * @param clusterId Cluster ID
     * @param serviceName Service Name
     * @param componentName Component Name
     * @param hostId Host ID
     * @return Return the Host Component Desired State entity that match the criteria.
     */
    @RequiresSession
    public HostComponentDesiredStateEntity findByIndex(Long clusterId, String serviceName,
                                                       String componentName, Long hostId) {
      final TypedQuery<HostComponentDesiredStateEntity> query = entityManagerProvider.get()
        .createNamedQuery("HostComponentDesiredStateEntity.findByIndexAndHost", HostComponentDesiredStateEntity.class);
  
      query.setParameter("clusterId", clusterId);
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
      query.setParameter("hostId", hostId);
  
      return daoUtils.selectSingle(query);
    }
  
    /**
     * Retrieve the single Host Component Desired State for the given unique cluster, service, component, and host.
     *
     * @param clusterId Cluster ID
     * @param serviceName Service Name
     * @param componentName Component Name
     * @return Return the Host Component Desired State entity that match the criteria.
     */
    @RequiresSession
    public List<HostComponentDesiredStateEntity> findByIndex(Long clusterId, String serviceName,
                                                       String componentName) {
      final TypedQuery<HostComponentDesiredStateEntity> query = entityManagerProvider.get()
        .createNamedQuery("HostComponentDesiredStateEntity.findByIndex", HostComponentDesiredStateEntity.class);
  
      query.setParameter("clusterId", clusterId);
      query.setParameter("serviceName", serviceName);
      query.setParameter("componentName", componentName);
  
      return daoUtils.selectList(query);
    }
  
    @RequiresSession
    public List<HostComponentDesiredStateEntity> findByHostsAndCluster(Collection<Long> hostIds, Long clusterId) {
      final EntityManager entityManager = entityManagerProvider.get();
      final TypedQuery<HostComponentDesiredStateEntity> query = entityManager.
          createNamedQuery("HostComponentDesiredStateEntity.findByHostsAndCluster", HostComponentDesiredStateEntity.class);
  
      final List<HostComponentDesiredStateEntity> result = new ArrayList<>();
      SQLOperations.batch(hostIds, SQLConstants.IN_ARGUMENT_MAX_SIZE, (chunk, currentBatch, totalBatches, totalSize) -> {
        query.setParameter("hostIds", chunk);
        query.setParameter("clusterId", clusterId);
        result.addAll(daoUtils.selectList(query));
        return 0;
      });
      return Lists.newArrayList(result);
    }
  
    @Transactional
    public void refresh(HostComponentDesiredStateEntity hostComponentDesiredStateEntity) {
      entityManagerProvider.get().refresh(hostComponentDesiredStateEntity);
    }
  
    @Transactional
    public void create(HostComponentDesiredStateEntity hostComponentDesiredStateEntity) {
      entityManagerProvider.get().persist(hostComponentDesiredStateEntity);
    }
  
    @Transactional
    public HostComponentDesiredStateEntity merge(HostComponentDesiredStateEntity hostComponentDesiredStateEntity) {
      return entityManagerProvider.get().merge(hostComponentDesiredStateEntity);
    }
  
    @Transactional
    public void remove(HostComponentDesiredStateEntity hostComponentDesiredStateEntity) {
      HostEntity hostEntity = hostComponentDesiredStateEntity.getHostEntity();
  
      if (hostEntity == null) {
        throw new IllegalStateException(String.format("Missing hostEntity for host id %1d",
                hostComponentDesiredStateEntity.getHostId()));
      }
  
      hostEntity.removeHostComponentDesiredStateEntity(hostComponentDesiredStateEntity);
  
      entityManagerProvider.get().remove(hostComponentDesiredStateEntity);
      hostDAO.merge(hostEntity);
    }
  
    @Transactional
    public void removeId(long id) {
      remove(findById(id));
    }
  
  }
  