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.HashMap;
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.controller.ivory.Feed;
  import org.apache.ambari.server.controller.ivory.IvoryService;
  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 com.google.common.collect.ImmutableMap;
  import com.google.common.collect.Sets;
  
  /**
   * DR feed resource provider.
   */
  public class FeedResourceProvider extends AbstractDRResourceProvider {
  
    // ----- Property ID constants ---------------------------------------------
  
    protected static final String FEED_NAME_PROPERTY_ID                  = PropertyHelper.getPropertyId("Feed", "name");
    protected static final String FEED_DESCRIPTION_PROPERTY_ID           = PropertyHelper.getPropertyId("Feed", "description");
    protected static final String FEED_STATUS_PROPERTY_ID                = PropertyHelper.getPropertyId("Feed", "status");
    protected static final String FEED_SCHEDULE_PROPERTY_ID              = PropertyHelper.getPropertyId("Feed", "frequency");
    protected static final String FEED_SOURCE_CLUSTER_NAME_PROPERTY_ID   = PropertyHelper.getPropertyId("Feed/sourceCluster", "name");
    protected static final String FEED_SOURCE_CLUSTER_START_PROPERTY_ID  = PropertyHelper.getPropertyId("Feed/sourceCluster/validity", "start");
    protected static final String FEED_SOURCE_CLUSTER_END_PROPERTY_ID    = PropertyHelper.getPropertyId("Feed/sourceCluster/validity", "end");
    protected static final String FEED_SOURCE_CLUSTER_LIMIT_PROPERTY_ID  = PropertyHelper.getPropertyId("Feed/sourceCluster/retention", "limit");
    protected static final String FEED_SOURCE_CLUSTER_ACTION_PROPERTY_ID = PropertyHelper.getPropertyId("Feed/sourceCluster/retention", "action");
    protected static final String FEED_TARGET_CLUSTER_NAME_PROPERTY_ID   = PropertyHelper.getPropertyId("Feed/targetCluster", "name");
    protected static final String FEED_TARGET_CLUSTER_START_PROPERTY_ID  = PropertyHelper.getPropertyId("Feed/targetCluster/validity", "start");
    protected static final String FEED_TARGET_CLUSTER_END_PROPERTY_ID    = PropertyHelper.getPropertyId("Feed/targetCluster/validity", "end");
    protected static final String FEED_TARGET_CLUSTER_LIMIT_PROPERTY_ID  = PropertyHelper.getPropertyId("Feed/targetCluster/retention", "limit");
    protected static final String FEED_TARGET_CLUSTER_ACTION_PROPERTY_ID = PropertyHelper.getPropertyId("Feed/targetCluster/retention", "action");
    protected static final String FEED_PROPERTIES_PROPERTY_ID = PropertyHelper.getPropertyId("Feed", "properties");
  
    /**
     * The key property ids for a Feed resource.
     */
    private static final Map<Resource.Type, String> keyPropertyIds = ImmutableMap.<Resource.Type, String>builder()
        .put(Resource.Type.DRFeed, FEED_NAME_PROPERTY_ID)
        .build();
  
    /**
     * The property ids for a Feed resource.
     */
    private static final Set<String> propertyIds = Sets.newHashSet(
        FEED_NAME_PROPERTY_ID,
        FEED_DESCRIPTION_PROPERTY_ID,
        FEED_STATUS_PROPERTY_ID,
        FEED_SCHEDULE_PROPERTY_ID,
        FEED_SOURCE_CLUSTER_NAME_PROPERTY_ID,
        FEED_SOURCE_CLUSTER_START_PROPERTY_ID,
        FEED_SOURCE_CLUSTER_END_PROPERTY_ID,
        FEED_SOURCE_CLUSTER_LIMIT_PROPERTY_ID,
        FEED_SOURCE_CLUSTER_ACTION_PROPERTY_ID,
        FEED_TARGET_CLUSTER_NAME_PROPERTY_ID,
        FEED_TARGET_CLUSTER_START_PROPERTY_ID,
        FEED_TARGET_CLUSTER_END_PROPERTY_ID,
        FEED_TARGET_CLUSTER_LIMIT_PROPERTY_ID,
        FEED_TARGET_CLUSTER_ACTION_PROPERTY_ID,
        FEED_PROPERTIES_PROPERTY_ID);
  
    /**
     * Construct a provider.
     *
     * @param ivoryService    the ivory service
     */
    public FeedResourceProvider(IvoryService ivoryService) {
      super(propertyIds, keyPropertyIds, ivoryService);
    }
  
    @Override
    public RequestStatus createResources(Request request)
        throws SystemException, UnsupportedPropertyException,
               ResourceAlreadyExistsException, NoSuchParentResourceException {
      IvoryService service = getService();
  
      Set<Map<String, Object>> propertiesSet = request.getProperties();
  
      for(Map<String, Object> propertyMap : propertiesSet) {
        service.submitFeed(getFeed((String) propertyMap.get(FEED_NAME_PROPERTY_ID), propertyMap));
      }
      return new RequestStatusImpl(null);
    }
  
    @Override
    public Set<Resource> getResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException,
               NoSuchResourceException, NoSuchParentResourceException {
  
      IvoryService  service      = getService();
      List<String>  feedNames    = service.getFeedNames();
      Set<String>   requestedIds = getRequestPropertyIds(request, predicate);
      Set<Resource> resources    = new HashSet<>();
  
      for (String feedName : feedNames ) {
  
        Feed feed = service.getFeed(feedName);
  
        Resource resource = new ResourceImpl(Resource.Type.DRFeed);
        setResourceProperty(resource, FEED_NAME_PROPERTY_ID,
            feed.getName(), requestedIds);
        setResourceProperty(resource, FEED_DESCRIPTION_PROPERTY_ID,
            feed.getDescription(), requestedIds);
        setResourceProperty(resource, FEED_STATUS_PROPERTY_ID,
            feed.getStatus(), requestedIds);
        setResourceProperty(resource, FEED_SCHEDULE_PROPERTY_ID,
            feed.getSchedule(), requestedIds);
        setResourceProperty(resource, FEED_SOURCE_CLUSTER_NAME_PROPERTY_ID,
            feed.getSourceClusterName(), requestedIds);
        setResourceProperty(resource, FEED_SOURCE_CLUSTER_START_PROPERTY_ID,
            feed.getSourceClusterStart(), requestedIds);
        setResourceProperty(resource, FEED_SOURCE_CLUSTER_END_PROPERTY_ID,
            feed.getSourceClusterEnd(), requestedIds);
        setResourceProperty(resource, FEED_SOURCE_CLUSTER_LIMIT_PROPERTY_ID,
            feed.getSourceClusterLimit(), requestedIds);
        setResourceProperty(resource, FEED_SOURCE_CLUSTER_ACTION_PROPERTY_ID,
            feed.getSourceClusterAction(), requestedIds);
        setResourceProperty(resource, FEED_TARGET_CLUSTER_NAME_PROPERTY_ID,
            feed.getTargetClusterName(), requestedIds);
        setResourceProperty(resource, FEED_TARGET_CLUSTER_START_PROPERTY_ID,
            feed.getTargetClusterStart(), requestedIds);
        setResourceProperty(resource, FEED_TARGET_CLUSTER_END_PROPERTY_ID,
            feed.getTargetClusterEnd(), requestedIds);
        setResourceProperty(resource, FEED_TARGET_CLUSTER_LIMIT_PROPERTY_ID,
            feed.getTargetClusterLimit(), requestedIds);
        setResourceProperty(resource, FEED_TARGET_CLUSTER_ACTION_PROPERTY_ID,
            feed.getTargetClusterAction(), requestedIds);
        setResourceProperty(resource, FEED_PROPERTIES_PROPERTY_ID,
            feed.getProperties(), requestedIds);
  
        if (predicate == null || predicate.evaluate(resource)) {
          resources.add(resource);
        }
      }
      return resources;
    }
  
    @Override
    public RequestStatus updateResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException,
               NoSuchResourceException, NoSuchParentResourceException {
  
      Iterator<Map<String,Object>> iterator = request.getProperties().iterator();
      if (iterator.hasNext()) {
  
        Map<String, Object> propertyMap = iterator.next();
  
        String desiredStatus = (String) propertyMap.get(FEED_STATUS_PROPERTY_ID);
  
        // get all the feeds that pass the predicate check
        Set<Resource> resources = getResources(PropertyHelper.getReadRequest(), predicate);
  
        // update all the matching feeds with the property values from the request
        for (Resource resource : resources) {
          IvoryService service = getService();
          if (desiredStatus != null) {
            String status   = (String) resource.getPropertyValue(FEED_STATUS_PROPERTY_ID);
            String feedName = (String) resource.getPropertyValue(FEED_NAME_PROPERTY_ID);
  
            if (desiredStatus.equals("SCHEDULED")) {
              service.scheduleFeed(feedName);
            } else if (desiredStatus.equals("SUSPENDED")) {
              service.suspendFeed(feedName);
            } else if (status.equals("SUSPENDED") && desiredStatus.equals("RUNNING")) {
              service.resumeFeed(feedName);
            }
          }
          service.updateFeed(getFeed((String) resource.getPropertyValue(FEED_NAME_PROPERTY_ID),
              getUpdateMap(resource, propertyMap)));
        }
      }
      return new RequestStatusImpl(null);
    }
  
    @Override
    public RequestStatus deleteResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException,
               NoSuchResourceException, NoSuchParentResourceException {
      IvoryService service = getService();
  
      // get all the feeds that pass the predicate check
      Set<Resource> resources = getResources(PropertyHelper.getReadRequest(), predicate);
  
      for (Resource resource : resources) {
        // delete all the matching feeds with the property values from the request
        service.deleteFeed((String) resource.getPropertyValue(FEED_NAME_PROPERTY_ID));
      }
      return new RequestStatusImpl(null);
    }
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return new HashSet<>(keyPropertyIds.values());
    }
  
  
    // ----- helper methods -----------------------------------------------------
  
    /**
     * Get a new feed object from the given name and map of properties.
     *
     * @param feedName     the feed name
     * @param propertyMap  the properties
     *
     * @return a new feed
     */
    protected static Feed getFeed(String feedName, Map<String, Object> propertyMap) {
      Map<String, String> properties = new HashMap<>();
      for ( Map.Entry<String, Object> entry : propertyMap.entrySet()) {
        String property = entry.getKey();
        String category = PropertyHelper.getPropertyCategory(property);
        if (category.equals(FEED_PROPERTIES_PROPERTY_ID)) {
          properties.put(PropertyHelper.getPropertyName(property), (String) entry.getValue());
        }
      }
  
      return new Feed(
          feedName,
          (String) propertyMap.get(FEED_DESCRIPTION_PROPERTY_ID),
          (String) propertyMap.get(FEED_STATUS_PROPERTY_ID),
          (String) propertyMap.get(FEED_SCHEDULE_PROPERTY_ID),
          (String) propertyMap.get(FEED_SOURCE_CLUSTER_NAME_PROPERTY_ID),
          (String) propertyMap.get(FEED_SOURCE_CLUSTER_START_PROPERTY_ID),
          (String) propertyMap.get(FEED_SOURCE_CLUSTER_END_PROPERTY_ID),
          (String) propertyMap.get(FEED_SOURCE_CLUSTER_LIMIT_PROPERTY_ID),
          (String) propertyMap.get(FEED_SOURCE_CLUSTER_ACTION_PROPERTY_ID),
          (String) propertyMap.get(FEED_TARGET_CLUSTER_NAME_PROPERTY_ID),
          (String) propertyMap.get(FEED_TARGET_CLUSTER_START_PROPERTY_ID),
          (String) propertyMap.get(FEED_TARGET_CLUSTER_END_PROPERTY_ID),
          (String) propertyMap.get(FEED_TARGET_CLUSTER_LIMIT_PROPERTY_ID),
          (String) propertyMap.get(FEED_TARGET_CLUSTER_ACTION_PROPERTY_ID),
          properties);
    }
  
    /**
     * Get a property map for an update based on an existing feed resource updated with the
     * given property map.
     *
     * @param resource     the resource
     * @param propertyMap  the map of property updates
     *
     * @return the map of properies to use for the update
     */
    protected static Map<String, Object> getUpdateMap(Resource resource, Map<String, Object> propertyMap) {
      Map<String, Object> updateMap = new HashMap<>();
  
      updateMap.put(FEED_NAME_PROPERTY_ID, resource.getPropertyValue(FEED_NAME_PROPERTY_ID));
      updateMap.put(FEED_DESCRIPTION_PROPERTY_ID, resource.getPropertyValue(FEED_DESCRIPTION_PROPERTY_ID));
      updateMap.put(FEED_SCHEDULE_PROPERTY_ID, resource.getPropertyValue(FEED_SCHEDULE_PROPERTY_ID));
      updateMap.put(FEED_STATUS_PROPERTY_ID, resource.getPropertyValue(FEED_STATUS_PROPERTY_ID));
      updateMap.put(FEED_SOURCE_CLUSTER_NAME_PROPERTY_ID, resource.getPropertyValue(FEED_SOURCE_CLUSTER_NAME_PROPERTY_ID));
      updateMap.put(FEED_SOURCE_CLUSTER_START_PROPERTY_ID, resource.getPropertyValue(FEED_SOURCE_CLUSTER_START_PROPERTY_ID));
      updateMap.put(FEED_SOURCE_CLUSTER_END_PROPERTY_ID, resource.getPropertyValue(FEED_SOURCE_CLUSTER_END_PROPERTY_ID));
      updateMap.put(FEED_SOURCE_CLUSTER_LIMIT_PROPERTY_ID, resource.getPropertyValue(FEED_SOURCE_CLUSTER_LIMIT_PROPERTY_ID));
      updateMap.put(FEED_SOURCE_CLUSTER_ACTION_PROPERTY_ID, resource.getPropertyValue(FEED_SOURCE_CLUSTER_ACTION_PROPERTY_ID));
      updateMap.put(FEED_TARGET_CLUSTER_NAME_PROPERTY_ID, resource.getPropertyValue(FEED_TARGET_CLUSTER_NAME_PROPERTY_ID));
      updateMap.put(FEED_TARGET_CLUSTER_START_PROPERTY_ID, resource.getPropertyValue(FEED_TARGET_CLUSTER_START_PROPERTY_ID));
      updateMap.put(FEED_TARGET_CLUSTER_END_PROPERTY_ID, resource.getPropertyValue(FEED_TARGET_CLUSTER_END_PROPERTY_ID));
      updateMap.put(FEED_TARGET_CLUSTER_LIMIT_PROPERTY_ID, resource.getPropertyValue(FEED_TARGET_CLUSTER_LIMIT_PROPERTY_ID));
      updateMap.put(FEED_TARGET_CLUSTER_ACTION_PROPERTY_ID, resource.getPropertyValue(FEED_TARGET_CLUSTER_ACTION_PROPERTY_ID));
      updateMap.put(FEED_PROPERTIES_PROPERTY_ID, resource.getPropertyValue(FEED_PROPERTIES_PROPERTY_ID));
      updateMap.putAll(propertyMap);
  
      return updateMap;
    }
  
  }
  