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.
   */
  
  /*
   * 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.List;
  
  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;
  
  /**
   * Topology validator wrapper implementation. Executes a set of validations by calling a preconfgured set of validator implementations.
   */
  public class ChainedTopologyValidator implements TopologyValidator {
  
    private static final Logger LOGGER = LoggerFactory.getLogger(ChainedTopologyValidator.class);
    private List<TopologyValidator> validators;
  
    public ChainedTopologyValidator(List<TopologyValidator> validators) {
      this.validators = validators;
    }
  
    @Override
    public void validate(ClusterTopology topology) throws InvalidTopologyException {
      for (TopologyValidator validator : validators) {
        LOGGER.info("Performing topology validation: {}", validator.getClass());
        validator.validate(topology);
      }
    }
  }
  