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.controller.internal;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.StaticallyInject;
  import org.apache.ambari.server.controller.AmbariManagementController;
  import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
  import org.apache.ambari.server.controller.spi.NoSuchResourceException;
  import org.apache.ambari.server.controller.spi.Predicate;
  import org.apache.ambari.server.controller.spi.Request;
  import org.apache.ambari.server.controller.spi.RequestStatus;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.controller.spi.ResourceAlreadyExistsException;
  import org.apache.ambari.server.controller.spi.SystemException;
  import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
  import org.apache.ambari.server.controller.utilities.PropertyHelper;
  import org.apache.ambari.server.orm.dao.HostRoleCommandDAO;
  import org.apache.ambari.server.orm.dao.UpgradeDAO;
  import org.apache.ambari.server.orm.entities.HostRoleCommandEntity;
  import org.apache.ambari.server.orm.entities.UpgradeEntity;
  import org.apache.ambari.server.stack.upgrade.orchestrate.UpgradeHelper;
  import org.apache.ambari.server.state.Cluster;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.google.inject.Inject;
  /**
   * Get a summary of an upgrade request.
   */
  @StaticallyInject
  public class UpgradeSummaryResourceProvider extends AbstractControllerResourceProvider {
    protected static final String UPGRADE_SUMMARY_CLUSTER_NAME = "UpgradeSummary/cluster_name";
    protected static final String UPGRADE_SUMMARY_REQUEST_ID = "UpgradeSummary/request_id";
  
    protected static final String UPGRADE_SUMMARY_FAIL_REASON = PropertyHelper.getPropertyId("UpgradeSummary", "fail_reason");
  
    private static final Set<String> PK_PROPERTY_IDS = new HashSet<>(
      Arrays.asList(UPGRADE_SUMMARY_REQUEST_ID, UPGRADE_SUMMARY_CLUSTER_NAME));
    private static final Set<String> PROPERTY_IDS = new HashSet<>();
    private static Map<String, String> TASK_MAPPED_IDS = new HashMap<>();
  
    private static final Map<Resource.Type, String> KEY_PROPERTY_IDS = new HashMap<>();
  
    @Inject
    private static UpgradeDAO s_upgradeDAO = null;
  
    @Inject
    private static HostRoleCommandDAO s_hostRoleCommandDAO = null;
  
    /**
     * Used to request a resource for a given task.
     */
    @Inject
    private static UpgradeHelper s_upgradeHelper;
  
    static {
      // Properties
      PROPERTY_IDS.add(UPGRADE_SUMMARY_CLUSTER_NAME);
      PROPERTY_IDS.add(UPGRADE_SUMMARY_REQUEST_ID);
      PROPERTY_IDS.add(UPGRADE_SUMMARY_FAIL_REASON);
  
      // Inherit all of the properties from a Task as well to return data about the current task if it failed.
      for (String p : TaskResourceProvider.PROPERTY_IDS) {
        TASK_MAPPED_IDS.put(p, p.replace("Tasks/", "UpgradeSummary/failed_task/"));
      }
      PROPERTY_IDS.addAll(TASK_MAPPED_IDS.values());
  
      // Keys
      KEY_PROPERTY_IDS.put(Resource.Type.UpgradeSummary, UPGRADE_SUMMARY_REQUEST_ID);
      KEY_PROPERTY_IDS.put(Resource.Type.Cluster, UPGRADE_SUMMARY_CLUSTER_NAME);
    }
  
    private static final Logger LOG = LoggerFactory.getLogger(UpgradeSummaryResourceProvider.class);
  
    /**
     * Constructor.
     *
     * @param controller the controller
     */
    public UpgradeSummaryResourceProvider(AmbariManagementController controller) {
      super(Resource.Type.UpgradeSummary, PROPERTY_IDS, KEY_PROPERTY_IDS, controller);
    }
  
    @Override
    public RequestStatus createResources(final Request request) throws SystemException,
        UnsupportedPropertyException, ResourceAlreadyExistsException, NoSuchParentResourceException {
  
      throw new UnsupportedOperationException("Resource only supports GET operation.");
    }
  
    @Override
    public Set<Resource> getResources(Request request, Predicate predicate) throws SystemException,
        UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
      Set<Resource> resources = new HashSet<>();
      Set<String> requestPropertyIds = getRequestPropertyIds(request, predicate);
  
      for (Map<String, Object> propertyMap : getPropertyMaps(predicate)) {
        String clusterName = (String) propertyMap.get(UPGRADE_SUMMARY_CLUSTER_NAME);
  
        if (null == clusterName || clusterName.isEmpty()) {
          throw new IllegalArgumentException(
              "The cluster name is required when querying for upgrades");
        }
  
        Cluster cluster;
        try {
          cluster = getManagementController().getClusters().getCluster(clusterName);
        } catch (AmbariException e) {
          throw new NoSuchResourceException(
              String.format("Cluster %s could not be loaded", clusterName));
        }
  
        List<UpgradeEntity> upgrades = new ArrayList<>();
        String upgradeRequestIdStr = (String) propertyMap.get(UPGRADE_SUMMARY_REQUEST_ID);
        if (null != upgradeRequestIdStr) {
          UpgradeEntity upgrade = s_upgradeDAO.findUpgradeByRequestId(Long.valueOf(upgradeRequestIdStr));
  
          if (null != upgrade) {
            upgrades.add(upgrade);
          }
        } else {
          upgrades = s_upgradeDAO.findUpgrades(cluster.getClusterId());
        }
  
        for (UpgradeEntity entity : upgrades) {
          Resource resource = new ResourceImpl(Resource.Type.UpgradeSummary);
          Long upgradeRequestId = entity.getRequestId();
  
          setResourceProperty(resource, UPGRADE_SUMMARY_CLUSTER_NAME, clusterName, requestPropertyIds);
          setResourceProperty(resource, UPGRADE_SUMMARY_REQUEST_ID, entity.getRequestId(), requestPropertyIds);
  
          HostRoleCommandEntity mostRecentFailure = s_hostRoleCommandDAO.findMostRecentFailure(upgradeRequestId);
  
          String displayText = null;
          HostRoleCommandEntity failedTask = null;
          if (mostRecentFailure != null) {
            UpgradeSummary summary = new UpgradeSummary(mostRecentFailure);
            displayText = summary.getDisplayText();
            failedTask = summary.getFailedTask();
  
            Resource taskResource = s_upgradeHelper.getTaskResource(clusterName, failedTask.getRequestId(),
                failedTask.getStageId(), failedTask.getTaskId());
  
            // Include properties from the failed task.
            if (taskResource != null) {
              for (Map.Entry<String, String> property : TASK_MAPPED_IDS.entrySet()) {
                String taskPropertyId = property.getKey();
                String upgradeSummaryPropertyId = property.getValue();
  
                setResourceProperty(resource, upgradeSummaryPropertyId, taskResource.getPropertyValue(taskPropertyId), requestPropertyIds);
              }
            }
          }
          setResourceProperty(resource, UPGRADE_SUMMARY_FAIL_REASON, displayText, requestPropertyIds);
          resources.add(resource);
        }
      }
  
      return resources;
    }
  
    @Override
    public RequestStatus updateResources(final Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException, NoSuchResourceException,
        NoSuchParentResourceException {
      throw new UnsupportedOperationException("Resource only supports GET operation.");
    }
  
    @Override
    public RequestStatus deleteResources(Request request, Predicate predicate) throws SystemException,
        UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
      throw new UnsupportedOperationException("Resource only supports GET operation.");
    }
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return PK_PROPERTY_IDS;
    }
  }
  