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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.repository.ogm.metrics;
  
  import org.apache.atlas.exception.AtlasBaseException;
  import org.apache.atlas.model.instance.AtlasEntity;
  import org.apache.atlas.model.instance.AtlasEntity.AtlasEntityWithExtInfo;
  import org.apache.atlas.model.metrics.AtlasMetrics;
  import org.apache.atlas.model.metrics.AtlasMetricsStat;
  import org.apache.atlas.repository.impexp.AuditsWriter;
  import org.apache.atlas.repository.ogm.AbstractDataTransferObject;
  import org.apache.atlas.type.AtlasType;
  import org.apache.atlas.type.AtlasTypeRegistry;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.stereotype.Component;
  
  import javax.inject.Inject;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import static org.apache.atlas.model.metrics.AtlasMetricsStat.METRICS_ID_PREFIX_PROPERTY;
  
  /**
   * AtlasMetricsStatDTO is the bridge class in between AtlasMetricsStat and AtlasEntity.
   */
  @Component
  public class AtlasMetricsStatDTO extends AbstractDataTransferObject<AtlasMetricsStat> {
      public static final  String METRICS_ENTITY_TYPE_NAME = "__AtlasMetricsStat";
      public static final  String METRICS_ID_PROPERTY      = "metricsId";
      private static final Logger LOG = LoggerFactory.getLogger(AtlasMetricsStatDTO.class);
      private static final String METRICS_PROPERTY         = "metrics";
      private static final String COLLECTION_TIME_PROPERTY = "collectionTime";
      private static final String TIME_TO_LIVE_PROPERTY    = "timeToLiveMillis";
      private static final String UNIQUE_NAME_PROPERTY     = "uniqueName";
  
      @Inject
      public AtlasMetricsStatDTO(AtlasTypeRegistry typeRegistry) {
          super(typeRegistry, AtlasMetricsStat.class, METRICS_ENTITY_TYPE_NAME);
      }
  
      @Override
      public AtlasMetricsStat from(AtlasEntity entity) {
          LOG.debug("==> AtlasMetricsStatDTO.from({})", entity);
  
          AtlasMetricsStat metricsStat = null;
  
          String jsonMetrics = (String) entity.getAttribute(METRICS_PROPERTY);
  
          if (StringUtils.isNotEmpty(jsonMetrics)) {
              metricsStat = new AtlasMetricsStat(AtlasType.fromJson(jsonMetrics, AtlasMetrics.class));
          }
  
          if (metricsStat == null) {
              LOG.error("MetricStat cannot be created without metric info. Null has been returned.");
          } else {
              metricsStat.setGuid(entity.getGuid());
              metricsStat.setMetricsId((String) entity.getAttribute(METRICS_ID_PROPERTY));
  
              metricsStat.setCollectionTime((long) entity.getAttribute(COLLECTION_TIME_PROPERTY));
  
              metricsStat.setTimeToLiveMillis((long) entity.getAttribute(TIME_TO_LIVE_PROPERTY));
          }
  
          LOG.debug("<== AtlasMetricsStatDTO.from() : {}", metricsStat);
  
          return metricsStat;
      }
  
      @Override
      public AtlasMetricsStat from(AtlasEntity.AtlasEntityWithExtInfo entityWithExtInfo) {
          LOG.debug("==> AtlasMetricsStatDTO.from({})", entityWithExtInfo);
  
          AtlasMetricsStat ret = from(entityWithExtInfo.getEntity());
  
          LOG.debug("<== AtlasMetricsStatDTO.from() : {}", ret);
  
          return ret;
      }
  
      @Override
      public AtlasEntity toEntity(AtlasMetricsStat obj) throws AtlasBaseException {
          LOG.debug("==> AtlasMetricsStatDTO.toEntity({})", obj);
  
          AtlasEntity entity = getDefaultAtlasEntity(obj);
  
          entity.setAttribute(METRICS_ID_PROPERTY, getUniqueValue(obj));
  
          if (obj.getMetrics() != null) {
              entity.setAttribute(METRICS_PROPERTY, AtlasType.toJson(obj.getMetrics()));
          }
  
          entity.setAttribute(COLLECTION_TIME_PROPERTY, obj.getCollectionTime());
          entity.setAttribute(TIME_TO_LIVE_PROPERTY, obj.getTimeToLiveMillis());
          entity.setAttribute(UNIQUE_NAME_PROPERTY, getUniqueValue(obj));
  
          LOG.debug("<== AtlasMetricsStatDTO.toEntity() : {}", entity);
  
          return entity;
      }
  
      @Override
      public AtlasEntityWithExtInfo toEntityWithExtInfo(AtlasMetricsStat obj) throws AtlasBaseException {
          LOG.debug("==> AtlasMetricsStatDTO.toEntityWithExtInfo({})", obj);
  
          AtlasEntityWithExtInfo ret = new AtlasEntityWithExtInfo(toEntity(obj));
  
          LOG.debug("<== AtlasMetricsStatDTO.toEntityWithExtInfo() : {}", ret);
  
          return ret;
      }
  
      @Override
      public Map<String, Object> getUniqueAttributes(AtlasMetricsStat obj) {
          Map<String, Object> ret = new HashMap<>();
  
          ret.put(METRICS_ID_PROPERTY, getUniqueValue(obj));
  
          return ret;
      }
  
      private String getUniqueValue(AtlasMetricsStat obj) {
          return METRICS_ID_PREFIX_PROPERTY + obj.getCollectionTime() + "@" + AuditsWriter.getCurrentClusterName();
      }
  }
  