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.checks;
  
  import java.text.MessageFormat;
  import java.util.LinkedHashSet;
  
  import org.apache.ambari.annotations.UpgradeCheckInfo;
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.orm.entities.UpgradeEntity;
  import org.apache.ambari.server.stack.upgrade.Direction;
  import org.apache.ambari.server.state.Cluster;
  import org.apache.ambari.spi.upgrade.UpgradeCheckDescription;
  import org.apache.ambari.spi.upgrade.UpgradeCheckGroup;
  import org.apache.ambari.spi.upgrade.UpgradeCheckRequest;
  import org.apache.ambari.spi.upgrade.UpgradeCheckResult;
  import org.apache.ambari.spi.upgrade.UpgradeCheckStatus;
  import org.apache.ambari.spi.upgrade.UpgradeCheckType;
  import org.apache.ambari.spi.upgrade.UpgradeType;
  
  import com.google.common.collect.ImmutableMap;
  import com.google.inject.Singleton;
  
  /**
   * The {@link PreviousUpgradeCompleted} class is used to determine if there is a
   * prior upgrade or downgrade which has not completed. If the most recent
   * upgrade/downgrade is in a non-completed state, then this check will fail.
   */
  @Singleton
  @UpgradeCheckInfo(
      group = UpgradeCheckGroup.DEFAULT,
      order = 4.0f,
      required = { UpgradeType.ROLLING, UpgradeType.NON_ROLLING, UpgradeType.HOST_ORDERED })
  public class PreviousUpgradeCompleted extends ClusterCheck {
  
    static final UpgradeCheckDescription PREVIOUS_UPGRADE_COMPLETED = new UpgradeCheckDescription("PREVIOUS_UPGRADE_COMPLETED",
        UpgradeCheckType.CLUSTER,
        "A previous upgrade did not complete.",
        new ImmutableMap.Builder<String, String>()
          .put(UpgradeCheckDescription.DEFAULT,
              "The last upgrade attempt did not complete. {{fails}}").build());
  
    /**
     * The message displayed as part of this pre-upgrade check.
     */
    public static final String ERROR_MESSAGE = "There is an existing {0} {1} {2} which has not completed. This {3} must be completed before a new upgrade or downgrade can begin.";
  
    /**
     * Constructor.
     */
    public PreviousUpgradeCompleted() {
      super(PREVIOUS_UPGRADE_COMPLETED);
    }
  
    @Override
    public UpgradeCheckResult perform(UpgradeCheckRequest request) throws AmbariException {
      UpgradeCheckResult result = new UpgradeCheckResult(this);
  
      final String clusterName = request.getClusterName();
      final Cluster cluster = clustersProvider.get().getCluster(clusterName);
  
      String errorMessage = null;
      UpgradeEntity upgradeInProgress = cluster.getUpgradeInProgress();
      if (null != upgradeInProgress) {
        Direction direction = upgradeInProgress.getDirection();
        String directionText = direction.getText(false);
        String prepositionText = direction.getPreposition();
  
        errorMessage = MessageFormat.format(ERROR_MESSAGE, directionText, prepositionText,
            upgradeInProgress.getRepositoryVersion().getVersion(), directionText);
      }
  
      if (null != errorMessage) {
        LinkedHashSet<String> failedOn = new LinkedHashSet<>();
        failedOn.add(cluster.getClusterName());
        result.setFailedOn(failedOn);
        result.setStatus(UpgradeCheckStatus.FAIL);
        result.setFailReason(errorMessage);
      }
  
      return result;
    }
  }
  