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.EnumSet;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.LinkedHashSet;
  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.actionmanager.HostRoleStatus;
  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.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.HostRoleCommandStatusSummaryDTO;
  import org.apache.ambari.server.orm.dao.StageDAO;
  import org.apache.ambari.server.orm.dao.UpgradeDAO;
  import org.apache.ambari.server.orm.entities.StageEntity;
  import org.apache.ambari.server.orm.entities.StageEntityPK;
  import org.apache.ambari.server.orm.entities.UpgradeEntity;
  import org.apache.ambari.server.orm.entities.UpgradeGroupEntity;
  import org.apache.ambari.server.orm.entities.UpgradeItemEntity;
  import org.apache.ambari.server.security.authorization.AuthorizationException;
  import org.apache.ambari.server.security.authorization.AuthorizationHelper;
  import org.apache.ambari.server.security.authorization.ResourceType;
  import org.apache.ambari.server.security.authorization.RoleAuthorization;
  import org.apache.ambari.server.state.Cluster;
  import org.apache.ambari.server.utils.SecretReference;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.google.inject.Inject;
  
  /**
   * Manages the ability to get the status of upgrades.
   */
  @StaticallyInject
  public class UpgradeItemResourceProvider extends ReadOnlyResourceProvider {
  
    private static final Logger LOG = LoggerFactory.getLogger(UpgradeItemResourceProvider.class);
  
    public static final String UPGRADE_CLUSTER_NAME = "UpgradeItem/cluster_name";
    public static final String UPGRADE_REQUEST_ID = "UpgradeItem/request_id";
    public static final String UPGRADE_GROUP_ID = "UpgradeItem/group_id";
    public static final String UPGRADE_ITEM_STAGE_ID = "UpgradeItem/stage_id";
    public static final String UPGRADE_ITEM_TEXT = "UpgradeItem/text";
  
    private static final Set<String> PK_PROPERTY_IDS = new HashSet<>(
      Arrays.asList(UPGRADE_REQUEST_ID, UPGRADE_ITEM_STAGE_ID));
    private static final Set<String> PROPERTY_IDS = new HashSet<>();
  
    private static final Map<Resource.Type, String> KEY_PROPERTY_IDS = new HashMap<>();
    private static Map<String, String> STAGE_MAPPED_IDS = new HashMap<>();
  
    @Inject
    private static UpgradeDAO s_dao;
  
    @Inject
    private static StageDAO s_stageDao;
  
    @Inject
    private static HostRoleCommandDAO s_hostRoleCommandDAO;
  
    static {
      // properties
      PROPERTY_IDS.add(UPGRADE_ITEM_STAGE_ID);
      PROPERTY_IDS.add(UPGRADE_GROUP_ID);
      PROPERTY_IDS.add(UPGRADE_REQUEST_ID);
      PROPERTY_IDS.add(UPGRADE_ITEM_TEXT);
  
      // !!! boo
      for (String p : StageResourceProvider.PROPERTY_IDS) {
        STAGE_MAPPED_IDS.put(p, p.replace("Stage/", "UpgradeItem/"));
      }
  
      PROPERTY_IDS.addAll(STAGE_MAPPED_IDS.values());
  
      // keys
      KEY_PROPERTY_IDS.put(Resource.Type.UpgradeItem, UPGRADE_ITEM_STAGE_ID);
      KEY_PROPERTY_IDS.put(Resource.Type.UpgradeGroup, UPGRADE_GROUP_ID);
      KEY_PROPERTY_IDS.put(Resource.Type.Upgrade, UPGRADE_REQUEST_ID);
      KEY_PROPERTY_IDS.put(Resource.Type.Cluster, UPGRADE_CLUSTER_NAME);
    }
  
    /**
     * Constructor.
     *
     * @param controller  the controller
     */
    UpgradeItemResourceProvider(AmbariManagementController controller) {
      super(Resource.Type.UpgradeItem, PROPERTY_IDS, KEY_PROPERTY_IDS, controller);
    }
  
    @Override
    public RequestStatus updateResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException,
        NoSuchResourceException, NoSuchParentResourceException {
  
      // the request should contain a single map of update properties...
      Iterator<Map<String,Object>> iterator = request.getProperties().iterator();
      if (iterator.hasNext()) {
        Map<String,Object> updateProperties = iterator.next();
  
        String statusPropertyId = STAGE_MAPPED_IDS.get(StageResourceProvider.STAGE_STATUS);
        String stageStatus = (String) updateProperties.get(statusPropertyId);
  
        if (null == stageStatus) {
          throw new IllegalArgumentException("Upgrade items can only have their status changed.");
        }
  
        HostRoleStatus desiredStatus = HostRoleStatus.valueOf(stageStatus);
        Set<Resource> resources = getResources(PropertyHelper.getReadRequest(), predicate);
  
        for (Resource resource : resources) {
          final String clusterName = (String)resource.getPropertyValue(UPGRADE_CLUSTER_NAME);
          final Cluster cluster;
  
          try {
            cluster = getManagementController().getClusters().getCluster(clusterName);
          } catch (AmbariException e) {
            throw new NoSuchParentResourceException(
                String.format("Cluster %s could not be loaded", clusterName));
          }
  
  
          if (!AuthorizationHelper.isAuthorized(ResourceType.CLUSTER, cluster.getResourceId(),
              EnumSet.of(RoleAuthorization.CLUSTER_UPGRADE_DOWNGRADE_STACK))) {
            throw new AuthorizationException("The authenticated user does not have authorization to " +
                "manage upgrade and downgrade");
          }
  
  
          // Set the desired status on the underlying stage.
          Long requestId = (Long) resource.getPropertyValue(UPGRADE_REQUEST_ID);
          Long stageId = (Long) resource.getPropertyValue(UPGRADE_ITEM_STAGE_ID);
  
          StageEntityPK primaryKey = new StageEntityPK();
          primaryKey.setRequestId(requestId);
          primaryKey.setStageId(stageId);
  
          StageEntity stageEntity = s_stageDao.findByPK(primaryKey);
          if (null == stageEntity) {
            LOG.warn(
                "Unable to change the status of request {} and stage {} to {} because it does not exist",
                requestId, stageId, desiredStatus);
  
            return getRequestStatus(null);
          }
  
          s_stageDao.updateStageStatus(stageEntity, desiredStatus,
              getManagementController().getActionManager());
        }
      }
  
      notifyUpdate(Resource.Type.UpgradeItem, request, predicate);
      return getRequestStatus(null);
    }
  
    @Override
    public Set<Resource> getResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException,
        NoSuchResourceException, NoSuchParentResourceException {
  
      Set<Resource> results = new LinkedHashSet<>();
      Set<String> requestPropertyIds = getRequestPropertyIds(request, predicate);
  
      for (Map<String, Object> propertyMap : getPropertyMaps(predicate)) {
        String requestIdStr = (String) propertyMap.get(UPGRADE_REQUEST_ID);
        String groupIdStr = (String) propertyMap.get(UPGRADE_GROUP_ID);
        String stageIdStr = (String) propertyMap.get(UPGRADE_ITEM_STAGE_ID);
  
        if (null == requestIdStr || requestIdStr.isEmpty()) {
          throw new IllegalArgumentException("The upgrade id is required when querying for upgrades");
        }
  
        if (null == groupIdStr || groupIdStr.isEmpty()) {
          throw new IllegalArgumentException("The upgrade group id is required when querying for upgrades");
        }
  
        Long requestId = Long.valueOf(requestIdStr);
        Long groupId = Long.valueOf(groupIdStr);
        Long stageId = null;
        if (null != stageIdStr) {
          stageId = Long.valueOf(stageIdStr);
        }
  
        List<UpgradeItemEntity> entities = new ArrayList<>();
        if (null == stageId) {
          UpgradeGroupEntity group = s_dao.findUpgradeGroup(groupId);
  
          if (null == group || null == group.getItems()) {
            throw new NoSuchResourceException(String.format("Cannot load upgrade for %s", requestIdStr));
          }
  
          entities = group.getItems();
  
        } else {
          UpgradeItemEntity entity = s_dao.findUpgradeItemByRequestAndStage(requestId, stageId);
          if (null != entity) {
            entities.add(entity);
          }
        }
  
        Map<Long, HostRoleCommandStatusSummaryDTO> requestAggregateCounts = s_hostRoleCommandDAO.findAggregateCounts(requestId);
        Map<Long, Map<Long, HostRoleCommandStatusSummaryDTO>> cache = new HashMap<>();
        cache.put(requestId, requestAggregateCounts);
  
        // !!! need to do some lookup for stages, so use a stageid -> resource for
        // when that happens
        for (UpgradeItemEntity entity : entities) {
          Resource upgradeItemResource = toResource(entity, requestPropertyIds);
  
          StageEntityPK stagePrimaryKey = new StageEntityPK();
          stagePrimaryKey.setRequestId(requestId);
          stagePrimaryKey.setStageId(entity.getStageId());
  
          StageEntity stageEntity = s_stageDao.findByPK(stagePrimaryKey);
          Resource stageResource = StageResourceProvider.toResource(cache, stageEntity,
              StageResourceProvider.PROPERTY_IDS);
  
          for (String propertyId : StageResourceProvider.PROPERTY_IDS) {
            // Attempt to mask any passwords in fields that are property maps.
            Object value = stageResource.getPropertyValue(propertyId);
            if (StageResourceProvider.PROPERTIES_TO_MASK_PASSWORD_IN.contains(propertyId)
                && value.getClass().equals(String.class) && !StringUtils.isBlank((String) value)) {
              value = SecretReference.maskPasswordInPropertyMap((String) value);
            }
  
            setResourceProperty(upgradeItemResource, STAGE_MAPPED_IDS.get(propertyId), value,
                requestPropertyIds);
          }
  
          results.add(upgradeItemResource);
        }
      }
      return results;
    }
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return PK_PROPERTY_IDS;
    }
  
    private Resource toResource(UpgradeItemEntity item, Set<String> requestedIds) {
      ResourceImpl resource = new ResourceImpl(Resource.Type.UpgradeItem);
  
      UpgradeGroupEntity group = item.getGroupEntity();
      UpgradeEntity upgrade = group.getUpgradeEntity();
  
      setResourceProperty(resource, UPGRADE_REQUEST_ID, upgrade.getRequestId(), requestedIds);
      setResourceProperty(resource, UPGRADE_GROUP_ID, group.getId(), requestedIds);
      setResourceProperty(resource, UPGRADE_ITEM_STAGE_ID, item.getStageId(), requestedIds);
      setResourceProperty(resource, UPGRADE_ITEM_TEXT, item.getText(), requestedIds);
  
      return resource;
    }
  
  }
  