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.spi.upgrade;
  
  import org.apache.ambari.server.AmbariException;
  
  /**
   * The {@link CheckQualification} interface is used to provide multiple
   * different qualifications against which an upgrade check is determined to be
   * applicable to the upgrade.
   */
  public interface CheckQualification {
  
    /**
     * Gets whether the upgrade check meets this qualification and should
     * therefore be run before the upgrade.
     *
     * @param request
     *          the upgrade check request.
     * @return {@code true} if the upgrade check is applicable to the specific
     *         upgrade request, or {@code false} otherwise.
     * @throws AmbariException
     *           if there was an error attempting to determine if the upgrade
     *           check is applicable to the desired upgrade.
     */
    boolean isApplicable(UpgradeCheckRequest request) throws AmbariException;
  }