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.resources;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.ambari.server.api.services.Request;
  import org.apache.ambari.server.api.util.TreeNode;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.controller.spi.Schema;
  import org.apache.ambari.server.controller.utilities.ClusterControllerHelper;
  
  /**
   * Component resource definition.
   */
  public class ComponentResourceDefinition extends BaseResourceDefinition {
  
    /**
     * Constructor.
     */
    public ComponentResourceDefinition() {
      super(Resource.Type.Component);
    }
  
    @Override
    public String getPluralName() {
      return "components";
    }
  
    @Override
    public String getSingularName() {
      return "component";
    }
  
  
    @Override
    public Set<SubResourceDefinition> getSubResourceDefinitions() {
      return Collections.singleton(new SubResourceDefinition(
          Resource.Type.HostComponent, Collections.singleton(Resource.Type.Host), true));
    }
  
    @Override
    public List<PostProcessor> getPostProcessors() {
      List<PostProcessor> listProcessors = super.getPostProcessors();
      listProcessors.add(new ComponentHrefProcessor());
  
      return listProcessors;
    }
  
    /**
     * Base resource processor which generates href's.  This is called by the
     * {@link org.apache.ambari.server.api.services.ResultPostProcessor} during post processing of a result.
     */
    private class ComponentHrefProcessor extends BaseHrefPostProcessor {
      @Override
      public void process(Request request, TreeNode<Resource> resultNode, String href) {
        TreeNode<Resource> parent = resultNode.getParent();
  
        if (parent.getParent() != null && parent.getParent().getObject().getType() == Resource.Type.HostComponent) {
          Resource r = resultNode.getObject();
          Schema schema = ClusterControllerHelper.getClusterController().getSchema(r.getType());
          Object serviceId = r.getPropertyValue(schema.getKeyPropertyId(Resource.Type.Service));
          Object componentId = r.getPropertyValue(schema.getKeyPropertyId(r.getType()));
  
          href = href.substring(0, href.indexOf("/hosts/") + 1) +
              "services/" + serviceId + "/components/" + componentId;
  
          resultNode.setProperty("href", href);
        } else {
          super.process(request, resultNode, href);
        }
      }
    }
  }
  