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.Cluster;
  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 target cluster resource provider.
   */
  public class TargetClusterResourceProvider extends AbstractDRResourceProvider {
  
    // ----- Property ID constants ---------------------------------------------
  
    protected static final String CLUSTER_NAME_PROPERTY_ID       = PropertyHelper.getPropertyId("Cluster", "name");
    protected static final String CLUSTER_COLO_PROPERTY_ID       = PropertyHelper.getPropertyId("Cluster", "colo");
    protected static final String CLUSTER_INTERFACES_PROPERTY_ID = PropertyHelper.getPropertyId("Cluster", "interfaces");
    protected static final String CLUSTER_LOCATIONS_PROPERTY_ID  = PropertyHelper.getPropertyId("Cluster", "locations");
    protected static final String CLUSTER_PROPERTIES_PROPERTY_ID = PropertyHelper.getPropertyId("Cluster", "properties");
  
    /**
     * The key property ids for a TargetCluster resource.
     */
    private static final Map<Resource.Type, String> keyPropertyIds = ImmutableMap.<Resource.Type, String>builder()
        .put(Resource.Type.Cluster, CLUSTER_NAME_PROPERTY_ID)
        .build();
  
    /**
     * The property ids for a TargetCluster resource.
     */
    private static final Set<String> propertyIds = Sets.newHashSet(
        CLUSTER_NAME_PROPERTY_ID,
        CLUSTER_COLO_PROPERTY_ID,
        CLUSTER_INTERFACES_PROPERTY_ID,
        CLUSTER_LOCATIONS_PROPERTY_ID,
        CLUSTER_PROPERTIES_PROPERTY_ID);
  
    /**
     * Construct a provider.
     *
     * @param ivoryService    the ivory service
     */
    public TargetClusterResourceProvider(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.submitCluster(getCluster((String) propertyMap.get(CLUSTER_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>  clusterNames    = service.getClusterNames();
      Set<String>   requestedIds = getRequestPropertyIds(request, predicate);
      Set<Resource> resources    = new HashSet<>();
  
      for (String clusterName : clusterNames ) {
  
        Cluster cluster = service.getCluster(clusterName);
  
        Resource resource = new ResourceImpl(Resource.Type.DRTargetCluster);
        setResourceProperty(resource, CLUSTER_NAME_PROPERTY_ID,
            cluster.getName(), requestedIds);
        setResourceProperty(resource, CLUSTER_COLO_PROPERTY_ID,
            cluster.getColo(), requestedIds);
        setResourceProperty(resource, CLUSTER_INTERFACES_PROPERTY_ID,
            cluster.getInterfaces(), requestedIds);
        setResourceProperty(resource, CLUSTER_LOCATIONS_PROPERTY_ID,
            cluster.getLocations(), requestedIds);
        setResourceProperty(resource, CLUSTER_PROPERTIES_PROPERTY_ID,
            cluster.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 {
      IvoryService service = getService();
  
      Iterator<Map<String,Object>> iterator = request.getProperties().iterator();
      if (iterator.hasNext()) {
  
        Map<String, Object> propertyMap = iterator.next();
  
        // get all the clusters that pass the predicate check
        Set<Resource> resources = getResources(PropertyHelper.getReadRequest(), predicate);
  
        for (Resource resource : resources) {
          // update all the matching clusters with the property values from the request
          service.updateCluster(getCluster((String) resource.getPropertyValue(CLUSTER_NAME_PROPERTY_ID), propertyMap));
        }
      }
      return new RequestStatusImpl(null);
    }
  
    @Override
    public RequestStatus deleteResources(Request request, Predicate predicate) throws SystemException, UnsupportedPropertyException,
        NoSuchResourceException, NoSuchParentResourceException {
      IvoryService service = getService();
  
      // get all the clusters that pass the predicate check
      Set<Resource> resources = getResources(PropertyHelper.getReadRequest(), predicate);
  
      for (Resource resource : resources) {
        // delete all the matching clusters with the property values from the request
        service.deleteCluster((String) resource.getPropertyValue(CLUSTER_NAME_PROPERTY_ID));
      }
      return new RequestStatusImpl(null);
    }
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return new HashSet<>(keyPropertyIds.values());
    }
  
  
    // ----- helper methods -----------------------------------------------------
  
    protected static Cluster getCluster(String clusterName, 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(CLUSTER_PROPERTIES_PROPERTY_ID)) {
          properties.put(PropertyHelper.getPropertyName(property), (String) entry.getValue());
        }
      }
  
      return new Cluster(
          clusterName,
          (String) propertyMap.get(CLUSTER_COLO_PROPERTY_ID),
          getInterfaces((Set<Map<String, Object>>) propertyMap.get(CLUSTER_INTERFACES_PROPERTY_ID)),
          getLocations((Set<Map<String, Object>>) propertyMap.get(CLUSTER_LOCATIONS_PROPERTY_ID)),
          properties);
    }
  
    protected static Set<Cluster.Interface> getInterfaces(Set<Map<String, Object>> maps) {
      Set<Cluster.Interface> interfaces = new HashSet<>();
      for (Map<String, Object> map : maps) {
        interfaces.add(new Cluster.Interface((String) map.get("type"), (String) map.get("endpoint"), (String) map.get("version")));
      }
      return interfaces;
    }
  
    protected static Set<Cluster.Location> getLocations(Set<Map<String, Object>> maps) {
      Set<Cluster.Location> locations = new HashSet<>();
      for (Map<String, Object> map : maps) {
        locations.add(new Cluster.Location((String) map.get("name"), (String) map.get("path")));
      }
      return locations;
    }
  
  }
  