content: /*
   * Licensed 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.topology.validators;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import org.apache.ambari.server.topology.ClusterTopology;
  import org.apache.ambari.server.topology.InvalidTopologyException;
  import org.apache.ambari.server.topology.TopologyValidator;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Validates whether incoming config types (form the blueprint or the cluster creation template) are valid.
   * A configuration type is considered valid if the stack based on which the cluster is to be created contains such a
   * config type.
   */
  public class StackConfigTypeValidator implements TopologyValidator {
    private static final Logger LOGGER = LoggerFactory.getLogger(StackConfigTypeValidator.class);
  
    public StackConfigTypeValidator() {
    }
  
    @Override
    public void validate(ClusterTopology topology) throws InvalidTopologyException {
  
      // get the config types form the request
      Set<String> incomingConfigTypes = new HashSet<>(topology.getConfiguration().getAllConfigTypes());
  
      if (incomingConfigTypes.isEmpty()) {
        LOGGER.debug("No config types to be checked.");
        return;
      }
  
      Set<String> stackConfigTypes = new HashSet<>(topology.getBlueprint().getStack().getConfiguration().getAllConfigTypes());
  
      // remove all "valid" config types from the incoming set
      incomingConfigTypes.removeAll(stackConfigTypes);
  
      if (!incomingConfigTypes.isEmpty()) {
        // there are config types in the request that are not in the stack
        String message = String.format("The following config types are not defined in the stack: %s ", incomingConfigTypes);
        LOGGER.error(message);
        throw new InvalidTopologyException(message);
      }
    }
  }
  
  
  
  
  