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.api.services.stackadvisor.StackAdvisorException;
  import org.apache.ambari.server.api.services.stackadvisor.StackAdvisorRequest;
  import org.apache.ambari.server.api.services.stackadvisor.StackAdvisorRequestException;
  import org.apache.ambari.server.api.services.stackadvisor.recommendations.RecommendationResponse;
  import org.apache.ambari.server.api.services.stackadvisor.recommendations.RecommendationResponse.BindingHostGroup;
  import org.apache.ambari.server.api.services.stackadvisor.recommendations.RecommendationResponse.HostGroup;
  import org.apache.ambari.server.controller.AmbariManagementController;
  import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
  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.Resource.Type;
  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.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.google.common.collect.ImmutableMap;
  import com.google.common.collect.Sets;
  
  public class RecommendationResourceProvider extends StackAdvisorResourceProvider {
  
    private static final Logger LOG = LoggerFactory.getLogger(RecommendationResourceProvider.class);
  
    protected static final String RECOMMENDATION_ID_PROPERTY_ID = PropertyHelper.getPropertyId(
        "Recommendation", "id");
  
    protected static final String CLUSTER_ID_PROPERTY_ID = "clusterId";
    protected static final String SERVICE_NAME_PROPERTY_ID = "serviceName";
    protected static final String AUTO_COMPLETE_PROPERTY_ID = "autoComplete";
    protected static final String CONFIGS_RESPONSE_PROPERTY_ID = "configsResponse";
    protected static final String HOSTS_PROPERTY_ID = "hosts";
    protected static final String SERVICES_PROPERTY_ID = "services";
    protected static final String RECOMMEND_PROPERTY_ID = "recommend";
    protected static final String RECOMMENDATIONS_PROPERTY_ID = "recommendations";
  
    protected static final String CONFIG_GROUPS_PROPERTY_ID = PropertyHelper
        .getPropertyId("recommendations", "config-groups");
  
    protected static final String BLUEPRINT_PROPERTY_ID = PropertyHelper
        .getPropertyId("recommendations", "blueprint");
    protected static final String BLUEPRINT_CONFIGURATIONS_PROPERTY_ID = PropertyHelper
        .getPropertyId("recommendations/blueprint", "configurations");
  
    protected static final String BLUEPRINT_HOST_GROUPS_PROPERTY_ID = PropertyHelper.getPropertyId(
        "recommendations/blueprint", "host_groups");
    protected static final String BLUEPRINT_HOST_GROUPS_NAME_PROPERTY_ID = "name";
    protected static final String BLUEPRINT_HOST_GROUPS_COMPONENTS_PROPERTY_ID = "components";
  
    protected static final String BINDING_HOST_GROUPS_PROPERTY_ID = PropertyHelper.getPropertyId(
        "recommendations/blueprint_cluster_binding", "host_groups");
    protected static final String BINDING_HOST_GROUPS_NAME_PROPERTY_ID = "name";
    protected static final String BINDING_HOST_GROUPS_HOSTS_PROPERTY_ID = "hosts";
    protected static final String CHANGED_CONFIGURATIONS_PROPERTY_ID = "changed_configurations";
    protected static final String BINDING_PROPERTY_ID = PropertyHelper
        .getPropertyId("recommendations", "blueprint_cluster_binding");
    protected static final String USER_CONTEXT_PROPERTY_ID = "user_context";
    protected static final String USER_CONTEXT_OPERATION_PROPERTY_ID = PropertyHelper
        .getPropertyId(USER_CONTEXT_PROPERTY_ID, "operation");
    protected static final String USER_CONTEXT_OPERATION_DETAILS_PROPERTY_ID = PropertyHelper
        .getPropertyId(USER_CONTEXT_PROPERTY_ID, "operation_details");
  
  
    /**
     * The key property ids for a Recommendation resource.
     */
    private static final Map<Resource.Type, String> keyPropertyIds = ImmutableMap.<Resource.Type, String>builder()
        .put(Type.Recommendation, RECOMMENDATION_ID_PROPERTY_ID)
        .put(Type.Stack, STACK_NAME_PROPERTY_ID)
        .put(Type.StackVersion, STACK_VERSION_PROPERTY_ID)
        .build();
  
    /**
     * The property ids for a Recommendation resource.
     */
    private static final Set<String> propertyIds = Sets.newHashSet(
        RECOMMENDATION_ID_PROPERTY_ID,
        STACK_NAME_PROPERTY_ID,
        STACK_VERSION_PROPERTY_ID,
        RECOMMEND_PROPERTY_ID,
        CLUSTER_ID_PROPERTY_ID,
        SERVICE_NAME_PROPERTY_ID,
        AUTO_COMPLETE_PROPERTY_ID,
        CONFIGS_RESPONSE_PROPERTY_ID,
        HOSTS_PROPERTY_ID,
        SERVICES_PROPERTY_ID,
        CONFIG_GROUPS_PROPERTY_ID,
        CHANGED_CONFIGURATIONS_PROPERTY_ID,
        USER_CONTEXT_PROPERTY_ID,
        USER_CONTEXT_OPERATION_PROPERTY_ID,
        USER_CONTEXT_OPERATION_DETAILS_PROPERTY_ID,
        RECOMMENDATIONS_PROPERTY_ID,
        BLUEPRINT_PROPERTY_ID,
        BLUEPRINT_CONFIGURATIONS_PROPERTY_ID,
        BLUEPRINT_HOST_GROUPS_PROPERTY_ID,
        PropertyHelper.getPropertyId(BLUEPRINT_HOST_GROUPS_PROPERTY_ID, BLUEPRINT_HOST_GROUPS_NAME_PROPERTY_ID),
        PropertyHelper.getPropertyId(BLUEPRINT_HOST_GROUPS_PROPERTY_ID, BLUEPRINT_HOST_GROUPS_COMPONENTS_PROPERTY_ID),
        BINDING_PROPERTY_ID,
        BINDING_HOST_GROUPS_PROPERTY_ID,
        PropertyHelper.getPropertyId(BINDING_HOST_GROUPS_PROPERTY_ID, BINDING_HOST_GROUPS_NAME_PROPERTY_ID),
        PropertyHelper.getPropertyId(BINDING_HOST_GROUPS_PROPERTY_ID, BINDING_HOST_GROUPS_HOSTS_PROPERTY_ID),
        BINDING_HOST_GROUPS_NAME_PROPERTY_ID,
        BINDING_HOST_GROUPS_HOSTS_PROPERTY_ID);
  
  
    protected RecommendationResourceProvider(AmbariManagementController managementController) {
      super(Type.Recommendation, propertyIds, keyPropertyIds, managementController);
    }
  
    @Override
    protected String getRequestTypePropertyId() {
      return RECOMMEND_PROPERTY_ID;
    }
  
    @Override
    public RequestStatus createResources(final Request request) throws SystemException,
        UnsupportedPropertyException, ResourceAlreadyExistsException, NoSuchParentResourceException {
      StackAdvisorRequest recommendationRequest = prepareStackAdvisorRequest(request);
  
      final RecommendationResponse response;
      try {
        response = saHelper.recommend(recommendationRequest);
      } catch (StackAdvisorRequestException e) {
        LOG.warn("Error occured during recommendation", e);
        throw new IllegalArgumentException(e.getMessage(), e);
      } catch (StackAdvisorException | AmbariException e) {
        LOG.warn("Error occured during recommendation", e);
        throw new SystemException(e.getMessage(), e);
      }
  
      Resource recommendation = createResources(new Command<Resource>() {
        @Override
        public Resource invoke() throws AmbariException {
  
          Resource resource = new ResourceImpl(Resource.Type.Recommendation);
          if (!recommendationRequest.getConfigsResponse()) {
            setResourceProperty(resource, RECOMMENDATION_ID_PROPERTY_ID, response.getId(), getPropertyIds());
            setResourceProperty(resource, STACK_NAME_PROPERTY_ID, response.getVersion().getStackName(),
                getPropertyIds());
            setResourceProperty(resource, STACK_VERSION_PROPERTY_ID, response.getVersion()
                .getStackVersion(), getPropertyIds());
            setResourceProperty(resource, HOSTS_PROPERTY_ID, response.getHosts(), getPropertyIds());
            setResourceProperty(resource, SERVICES_PROPERTY_ID, response.getServices(),
                getPropertyIds());
          }
          setResourceProperty(resource, CONFIG_GROUPS_PROPERTY_ID,
            response.getRecommendations().getConfigGroups(), getPropertyIds());
          setResourceProperty(resource, BLUEPRINT_CONFIGURATIONS_PROPERTY_ID, response
              .getRecommendations().getBlueprint().getConfigurations(), getPropertyIds());
  
          if (!recommendationRequest.getConfigsResponse()) {
            Set<HostGroup> hostGroups = response.getRecommendations().getBlueprint().getHostGroups();
            List<Map<String, Object>> listGroupProps = new ArrayList<>();
            for (HostGroup hostGroup : hostGroups) {
              Map<String, Object> mapGroupProps = new HashMap<>();
              mapGroupProps.put(BLUEPRINT_HOST_GROUPS_NAME_PROPERTY_ID, hostGroup.getName());
              mapGroupProps
                  .put(BLUEPRINT_HOST_GROUPS_COMPONENTS_PROPERTY_ID, hostGroup.getComponents());
              listGroupProps.add(mapGroupProps);
            }
            setResourceProperty(resource, BLUEPRINT_HOST_GROUPS_PROPERTY_ID, listGroupProps,
                getPropertyIds());
  
            Set<BindingHostGroup> bindingHostGroups = response.getRecommendations()
                .getBlueprintClusterBinding().getHostGroups();
            List<Map<String, Object>> listBindingGroupProps = new ArrayList<>();
            for (BindingHostGroup hostGroup : bindingHostGroups) {
              Map<String, Object> mapGroupProps = new HashMap<>();
              mapGroupProps.put(BINDING_HOST_GROUPS_NAME_PROPERTY_ID, hostGroup.getName());
              mapGroupProps.put(BINDING_HOST_GROUPS_HOSTS_PROPERTY_ID, hostGroup.getHosts());
              listBindingGroupProps.add(mapGroupProps);
            }
            setResourceProperty(resource, BINDING_HOST_GROUPS_PROPERTY_ID, listBindingGroupProps,
                getPropertyIds());
          }
          return resource;
        }
      });
      notifyCreate(Resource.Type.Recommendation, request);
  
      Set<Resource> resources = new HashSet<>(Arrays.asList(recommendation));
      return new RequestStatusImpl(null, resources);
    }
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return new HashSet<>(keyPropertyIds.values());
    }
  
  }
  