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.Collections;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.controller.AmbariManagementController;
  import org.apache.ambari.server.controller.StackConfigurationRequest;
  import org.apache.ambari.server.controller.StackConfigurationResponse;
  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.Resource;
  import org.apache.ambari.server.controller.spi.Resource.Type;
  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.commons.lang.StringUtils;
  
  import com.google.common.collect.ImmutableMap;
  import com.google.common.collect.Sets;
  
  public class StackConfigurationResourceProvider extends
      ReadOnlyResourceProvider {
  
    public static final String STACK_NAME_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "stack_name");
  
    public static final String STACK_VERSION_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "stack_version");
  
    public static final String SERVICE_NAME_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "service_name");
  
    public static final String PROPERTY_NAME_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_name");
  
    public static final String PROPERTY_VALUE_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_value");
  
    public static final String PROPERTY_VALUE_ATTRIBUTES_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_value_attributes");
  
    public static final String PROPERTY_DEPENDS_ON_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_depends_on");
  
    public static final String PROPERTY_DESCRIPTION_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_description");
  
    public static final String PROPERTY_DISPLAY_NAME_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_display_name");
  
    public static final String PROPERTY_PROPERTY_TYPE_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "property_type");
  
    public static final String PROPERTY_TYPE_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "type");
  
    public static final String PROPERTY_FINAL_PROPERTY_ID = PropertyHelper
        .getPropertyId("StackConfigurations", "final");
  
    /**
     * The key property ids for a StackConfiguration resource.
     */
    private static final Map<Resource.Type, String> keyPropertyIds = ImmutableMap.<Resource.Type, String>builder()
        .put(Type.Stack, STACK_NAME_PROPERTY_ID)
        .put(Type.StackVersion, STACK_VERSION_PROPERTY_ID)
        .put(Type.StackService, SERVICE_NAME_PROPERTY_ID)
        .put(Type.StackConfiguration, PROPERTY_NAME_PROPERTY_ID)
        .build();
  
    /**
     * The property ids for a StackConfiguration resource.
     */
    private static final Set<String> propertyIds = Sets.newHashSet(
        STACK_NAME_PROPERTY_ID,
        STACK_VERSION_PROPERTY_ID,
        SERVICE_NAME_PROPERTY_ID,
        PROPERTY_NAME_PROPERTY_ID,
        PROPERTY_VALUE_PROPERTY_ID,
        PROPERTY_VALUE_ATTRIBUTES_PROPERTY_ID,
        PROPERTY_DEPENDS_ON_PROPERTY_ID,
        PROPERTY_DESCRIPTION_PROPERTY_ID,
        PROPERTY_DISPLAY_NAME_PROPERTY_ID,
        PROPERTY_PROPERTY_TYPE_PROPERTY_ID,
        PROPERTY_TYPE_PROPERTY_ID,
        PROPERTY_FINAL_PROPERTY_ID);
  
    protected StackConfigurationResourceProvider(AmbariManagementController managementController) {
      super(Type.StackConfiguration, propertyIds, keyPropertyIds, managementController);
    }
  
  
    @Override
    public Set<Resource> getResources(Request request, Predicate predicate)
        throws SystemException, UnsupportedPropertyException,
        NoSuchResourceException, NoSuchParentResourceException {
  
      final Set<StackConfigurationRequest> requests = new HashSet<>();
  
      if (predicate == null) {
        requests.add(getRequest(Collections.emptyMap()));
      } else {
        for (Map<String, Object> propertyMap : getPropertyMaps(predicate)) {
          requests.add(getRequest(propertyMap));
        }
      }
  
      Set<String> requestedIds = getRequestPropertyIds(request, predicate);
  
      Set<StackConfigurationResponse> responses = getResources(new Command<Set<StackConfigurationResponse>>() {
        @Override
        public Set<StackConfigurationResponse> invoke() throws AmbariException {
          return getManagementController().getStackConfigurations(requests);
        }
      });
  
      Set<Resource> resources = new HashSet<>();
      
      for (StackConfigurationResponse response : responses) {
        Resource resource = new ResourceImpl(Resource.Type.StackConfiguration);
  
        setResourceProperty(resource, STACK_NAME_PROPERTY_ID,
            response.getStackName(), requestedIds);
  
        setResourceProperty(resource, STACK_VERSION_PROPERTY_ID,
            response.getStackVersion(), requestedIds);
  
        setResourceProperty(resource, SERVICE_NAME_PROPERTY_ID,
            response.getServiceName(), requestedIds);
  
        setResourceProperty(resource, PROPERTY_NAME_PROPERTY_ID,
            response.getPropertyName(), requestedIds);
  
        setResourceProperty(resource, PROPERTY_VALUE_PROPERTY_ID,
            response.getPropertyValue(), requestedIds);
  
        setResourceProperty(resource, PROPERTY_VALUE_ATTRIBUTES_PROPERTY_ID,
            response.getPropertyValueAttributes(), requestedIds);
  
        setResourceProperty(resource, PROPERTY_DEPENDS_ON_PROPERTY_ID,
            response.getDependsOnProperties(), requestedIds);
  
        setResourceProperty(resource, PROPERTY_DESCRIPTION_PROPERTY_ID,
            response.getPropertyDescription(), requestedIds);
  
        //should not be returned if empty
        if (StringUtils.isNotEmpty(response.getPropertyDisplayName())) {
          setResourceProperty(resource, PROPERTY_DISPLAY_NAME_PROPERTY_ID,
              response.getPropertyDisplayName(), requestedIds);
        }
  
        setResourceProperty(resource, PROPERTY_PROPERTY_TYPE_PROPERTY_ID, 
            response.getPropertyType(), requestedIds);
        
        setResourceProperty(resource, PROPERTY_TYPE_PROPERTY_ID,
            response.getType(), requestedIds);
  
        setDefaultPropertiesAttributes(resource, requestedIds);
  
        for (Map.Entry<String, String> attribute : response.getPropertyAttributes().entrySet()) {
          setResourceProperty(resource, PropertyHelper.getPropertyId("StackConfigurations", attribute.getKey()),
              attribute.getValue(), requestedIds);
        }
  
        resources.add(resource);
      }
  
      return resources;
    }
  
    /**
     * Set default values for properties attributes before applying original ones
     * to prevent absence in case of empty attributes map
     */
    private void setDefaultPropertiesAttributes(Resource resource, Set<String> requestedIds) {
      setResourceProperty(resource, PROPERTY_FINAL_PROPERTY_ID,
          "false", requestedIds);
    }
  
    private StackConfigurationRequest getRequest(Map<String, Object> properties) {
      return new StackConfigurationRequest(
          (String) properties.get(STACK_NAME_PROPERTY_ID),
          (String) properties.get(STACK_VERSION_PROPERTY_ID),
          (String) properties.get(SERVICE_NAME_PROPERTY_ID),
          (String) properties.get(PROPERTY_NAME_PROPERTY_ID));
    }
  
    @Override
    protected Set<String> getPKPropertyIds() {
      return new HashSet<>(keyPropertyIds.values());
    }
  
  }
  