processing/src/main/java/org/apache/druid/query/DruidMetrics.java

/*
 * 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.druid.query;

import org.apache.druid.query.aggregation.AggregatorFactory;

import java.util.List;

/**
 */
public class DruidMetrics
{
  public static final String DATASOURCE = "dataSource";
  public static final String TYPE = "type";
  public static final String INTERVAL = "interval";
  public static final String ID = "id";
  public static final String TASK_ID = "taskId";
  public static final String STATUS = "status";

  // task metrics
  public static final String TASK_TYPE = "taskType";
  public static final String TASK_STATUS = "taskStatus";

  public static final String SERVER = "server";
  public static final String TIER = "tier";

  public static int findNumComplexAggs(List<AggregatorFactory> aggs)
  {
    int retVal = 0;
    for (AggregatorFactory agg : aggs) {
      // This needs to change when we have support column types better
      if (!"float".equals(agg.getTypeName()) && !"long".equals(agg.getTypeName()) && !"double"
          .equals(agg.getTypeName())) {
        retVal++;
      }
    }
    return retVal;
  }

  public static <T> QueryMetrics<?> makeRequestMetrics(
      final GenericQueryMetricsFactory queryMetricsFactory,
      final QueryToolChest<T, Query<T>> toolChest,
      final Query<T> query,
      final String remoteAddr
  )
  {
    QueryMetrics<? super Query<T>> queryMetrics;
    if (toolChest != null) {
      queryMetrics = toolChest.makeMetrics(query);
    } else {
      queryMetrics = queryMetricsFactory.makeMetrics(query);
    }
    queryMetrics.context(query);
    queryMetrics.remoteAddress(remoteAddr);
    return queryMetrics;
  }
}