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.audit.request.eventcreator;
  
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.ambari.server.api.services.Request;
  import org.apache.ambari.server.api.services.Result;
  import org.apache.ambari.server.api.services.ResultStatus;
  import org.apache.ambari.server.api.util.TreeNode;
  import org.apache.ambari.server.audit.event.AuditEvent;
  import org.apache.ambari.server.audit.event.request.ClusterNameChangeRequestAuditEvent;
  import org.apache.ambari.server.audit.event.request.ConfigurationChangeRequestAuditEvent;
  import org.apache.ambari.server.controller.internal.ClusterResourceProvider;
  import org.apache.ambari.server.controller.internal.ServiceConfigVersionResourceProvider;
  import org.apache.ambari.server.controller.spi.Resource;
  
  import com.google.common.collect.ImmutableSet;
  import com.google.common.collect.Iterables;
  
  /**
   * This creator handles operation requests (start, stop, install, etc)
   * For resource type {@link Resource.Type#HostComponent}
   * and request types {@link Request.Type#POST}, {@link Request.Type#PUT} and {@link Request.Type#DELETE}
   */
  public class ConfigurationChangeEventCreator implements RequestAuditEventCreator {
  
    /**
     * Set of {@link Request.Type}s that are handled by this plugin
     */
    private Set<Request.Type> requestTypes = ImmutableSet.<Request.Type>builder().add(Request.Type.PUT, Request.Type.POST, Request.Type.DELETE).build();
  
    /**
     * Set of {@link Resource.Type}s that are handled by this plugin
     */
    private Set<Resource.Type> resourceTypes = ImmutableSet.<Resource.Type>builder().add(Resource.Type.Cluster).build();
  
    /**
     * {@inheritDoc}
     */
    @Override
    public Set<Request.Type> getRequestTypes() {
      return requestTypes;
    }
  
    /**
     * {@inheritDoc}
     */
    @Override
    public Set<Resource.Type> getResourceTypes() {
      return resourceTypes;
    }
  
    /**
     * {@inheritDoc}
     */
    @Override
    public Set<ResultStatus.STATUS> getResultStatuses() {
      return null;
    }
  
    /**
     * {@inheritDoc}
     */
    @Override
    public AuditEvent createAuditEvent(Request request, Result result) {
  
      if (!request.getBody().getPropertySets().isEmpty()) {
        Map<String, Object> map = Iterables.getFirst(request.getBody().getPropertySets(), null);
        if (map != null && map.size() == 1 && map.containsKey(ClusterResourceProvider.CLUSTER_NAME_PROPERTY_ID)) {
          String newName = String.valueOf(map.get(ClusterResourceProvider.CLUSTER_NAME_PROPERTY_ID));
          String oldName = request.getResource().getKeyValueMap().get(Resource.Type.Cluster);
          return ClusterNameChangeRequestAuditEvent.builder()
            .withTimestamp(System.currentTimeMillis())
            .withRequestType(request.getRequestType())
            .withResultStatus(result.getStatus())
            .withUrl(request.getURI())
            .withRemoteIp(request.getRemoteAddress())
            .withOldName(oldName)
            .withNewName(newName)
            .build();
        }
      }
  
      return ConfigurationChangeRequestAuditEvent.builder()
        .withTimestamp(System.currentTimeMillis())
        .withRequestType(request.getRequestType())
        .withResultStatus(result.getStatus())
        .withUrl(request.getURI())
        .withRemoteIp(request.getRemoteAddress())
        .withVersionNote(getServiceConfigVersionNote(result))
        .withVersionNumber(getServiceConfigVersion(result))
        .build();
    }
  
    /**
     * Returns service configuration version from the result
     * @param result
     * @return
     */
    private String getServiceConfigVersion(Result result) {
      Map<String, Object> map = getServiceConfigMap(result);
      return map == null ? null : String.valueOf(map.get(ServiceConfigVersionResourceProvider.SERVICE_CONFIG_VERSION_PROPERTY_ID));
    }
  
    /**
     * Returns service configurationv ersion note from the result
     * @param result
     * @return
     */
    private String getServiceConfigVersionNote(Result result) {
      Map<String, Object> map = getServiceConfigMap(result);
      return map == null ? null : String.valueOf(map.get(ServiceConfigVersionResourceProvider.SERVICE_CONFIG_VERSION_NOTE_PROPERTY_ID));
    }
  
    /**
     * Returns service configuration map from the result. This map contains version number and version info
     * @param result
     * @return
     */
    private Map<String, Object> getServiceConfigMap(Result result) {
      if (result.getResultTree().getChild("resources") != null) {
        TreeNode<Resource> first = Iterables.getFirst(result.getResultTree().getChild("resources").getChildren(), null);
        if(first != null && first.getObject() != null) {
          return first.getObject().getPropertiesMap().get("");
        }
      }
      return null;
    }
  
  }
  