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.api.query.render;
  
  import java.util.Set;
  
  import org.apache.ambari.server.api.query.QueryInfo;
  import org.apache.ambari.server.api.util.TreeNode;
  import org.apache.ambari.server.controller.metrics.MetricsPaddingMethod.PADDING_STRATEGY;
  
  public class MetricsPaddingRenderer extends DefaultRenderer {
    PADDING_STRATEGY paddingMethod = PADDING_STRATEGY.ZEROS;
  
    public MetricsPaddingRenderer(String paddingMethod) {
      if (paddingMethod.equalsIgnoreCase("null_padding")) {
        this.paddingMethod = PADDING_STRATEGY.NULLS;
      } else if (paddingMethod.equalsIgnoreCase("no_padding")) {
        this.paddingMethod = PADDING_STRATEGY.NONE;
      }
    }
  
    @Override
    public TreeNode<Set<String>> finalizeProperties(TreeNode<QueryInfo> queryProperties,
                                                    boolean isCollection) {
      Set<String> properties = queryProperties.getObject().getProperties();
      if (properties != null) {
        properties.add("params/padding/" + paddingMethod.name());
      }
      return super.finalizeProperties(queryProperties, isCollection);
    }
  }
  