hopsworks-master/hopsworks-common/src/main/java/io/hops/hopsworks/common/dao/jobs/quota/YarnProjectsQuotaFacade.java
/*
 * Changes to this file committed after and not including commit-id: ccc0d2c5f9a5ac661e60e6eaf138de7889928b8b
 * are released under the following license:
 *
 * This file is part of Hopsworks
 * Copyright (C) 2018, Logical Clocks AB. All rights reserved
 *
 * Hopsworks is free software: you can redistribute it and/or modify it under the terms of
 * the GNU Affero General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * Hopsworks is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License along with this program.
 * If not, see <https://www.gnu.org/licenses/>.
 *
 * Changes to this file committed before and including commit-id: ccc0d2c5f9a5ac661e60e6eaf138de7889928b8b
 * are released under the following license:
 *
 * Copyright (C) 2013 - 2018, Logical Clocks AB and RISE SICS AB. All rights reserved
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package io.hops.hopsworks.common.dao.jobs.quota;

import io.hops.hopsworks.common.dao.AbstractFacade;
import io.hops.hopsworks.persistence.entity.jobs.quota.YarnPriceMultiplicator;
import io.hops.hopsworks.persistence.entity.jobs.quota.YarnProjectsQuota;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

@Stateless
public class YarnProjectsQuotaFacade extends
        AbstractFacade<YarnProjectsQuota> {

  @PersistenceContext(unitName = "kthfsPU")
  private EntityManager em;

  @Override
  protected EntityManager getEntityManager() {
    return em;
  }

  public void persistYarnProjectsQuota(YarnProjectsQuota yarnProjectsQuota) {
    em.persist(yarnProjectsQuota);
  }

  public YarnProjectsQuotaFacade() {
    super(YarnProjectsQuota.class);
  }

  public Optional<YarnProjectsQuota> findByProjectName(String projectname) {
    try {
      return Optional.of(
          em.createNamedQuery("YarnProjectsQuota.findByProjectname", YarnProjectsQuota.class)
              .setParameter("projectname", projectname)
              .getSingleResult()
      );
    } catch (NoResultException e) {
      return Optional.empty();
    }
  }

  public void flushEm() {
    em.flush();
  }

  @Override
  public List<YarnProjectsQuota> findAll() {
    TypedQuery<YarnProjectsQuota> query = em.createNamedQuery(
            "YarnProjectsQuota.findAll",
            YarnProjectsQuota.class);
    return query.getResultList();
  }

  public void changeYarnQuota(String projectName, float quota) {
    YarnProjectsQuota projectQuota = findByProjectName(projectName)
        .orElse(new YarnProjectsQuota(projectName));
    projectQuota.setQuotaRemaining(quota);
    em.merge(projectQuota);
  }

  public void removeQuota(String projectName) {
    findByProjectName(projectName).ifPresent(this::remove);
  }

  public List<YarnPriceMultiplicator> getMultiplicators() {
    try {
      TypedQuery<YarnPriceMultiplicator> query = em.createNamedQuery("YarnPriceMultiplicator.findAll",
          YarnPriceMultiplicator.class);
      return query.getResultList();
    } catch (NoResultException e) {
      return new ArrayList<>();
    }
  }
}
