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.api.services.views;
  
  import jakarta.ws.rs.PUT;
  import jakarta.ws.rs.Path;
  import jakarta.ws.rs.PathParam;
  import jakarta.ws.rs.WebApplicationException;
  import jakarta.ws.rs.core.Response;
  
  import org.apache.ambari.server.api.services.BaseService;
  import org.apache.ambari.server.orm.entities.ViewInstanceEntity;
  import org.apache.ambari.server.view.ViewDataMigrationUtility;
  import org.apache.ambari.server.view.ViewRegistry;
  import org.apache.ambari.view.migration.ViewDataMigrationException;
  import org.apache.http.HttpStatus;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import io.swagger.annotations.Api;
  import io.swagger.annotations.ApiOperation;
  import io.swagger.annotations.ApiParam;
  import io.swagger.annotations.ApiResponse;
  import io.swagger.annotations.ApiResponses;
  
  /**
   * Service responsible for data migration between view instances.
   */
  @Path("/views/{viewName}/versions/{version}/instances/{instanceName}/migrate")
  @Api(tags = "Views", description = "Endpoint for view specific operations")
  public class ViewDataMigrationService extends BaseService {
    /**
     * Logger.
     */
    private static final Logger LOG = LoggerFactory.getLogger(ViewDataMigrationService.class);
  
    /**
     * The singleton view registry.
     */
    private ViewRegistry viewRegistry = ViewRegistry.getInstance();
  
    /**
     * The view data migration utility.
     */
    private ViewDataMigrationUtility viewDataMigrationUtility;
  
    /**
     * Migrates view instance persistence data from origin view instance
     * specified in the path params.
     *
     * @param viewName           view id
     * @param viewVersion        version id
     * @param instanceName       instance id
     * @param originViewVersion  the origin view version
     * @param originInstanceName the origin view instance name
     */
    @PUT
    @Path("{originVersion}/{originInstanceName}")
    @ApiOperation(value = "Migrate view instance data", notes = "Migrates view instance persistence data from origin view instance specified in the path params.")
    @ApiResponses({
      @ApiResponse(code = HttpStatus.SC_OK, message = MSG_SUCCESSFUL_OPERATION),
      @ApiResponse(code = HttpStatus.SC_NOT_FOUND, message = MSG_CLUSTER_NOT_FOUND),
      @ApiResponse(code = HttpStatus.SC_UNAUTHORIZED, message = MSG_NOT_AUTHENTICATED),
      @ApiResponse(code = HttpStatus.SC_FORBIDDEN, message = MSG_PERMISSION_DENIED),
      @ApiResponse(code = HttpStatus.SC_INTERNAL_SERVER_ERROR, message = MSG_SERVER_ERROR),
      @ApiResponse(code = HttpStatus.SC_BAD_REQUEST, message = MSG_INVALID_ARGUMENTS),
    })
    public Response migrateData( @ApiParam(value = "view name") @PathParam("viewName") String viewName,
                                 @ApiParam(value = "view version") @PathParam("version") String viewVersion,
                                 @ApiParam(value = "instance name") @PathParam("instanceName") String instanceName,
                                 @ApiParam(value = "origin version") @PathParam("originVersion") String originViewVersion,
                                 @ApiParam(value = "origin instance name") @PathParam("originInstanceName") String originInstanceName)
        throws ViewDataMigrationException {
  
      if (!viewRegistry.checkAdmin()) {
        throw new WebApplicationException(Response.Status.FORBIDDEN);
      }
  
      LOG.info("Data Migration to view instance " + viewName + "/" + viewVersion + "/" + instanceName +
          " from " + viewName + "/" + originViewVersion + "/" + originInstanceName);
  
      ViewInstanceEntity instanceDefinition = viewRegistry.getInstanceDefinition(
          viewName, viewVersion, instanceName);
      ViewInstanceEntity originInstanceDefinition = viewRegistry.getInstanceDefinition(
          viewName, originViewVersion, originInstanceName);
  
      getViewDataMigrationUtility().migrateData(instanceDefinition, originInstanceDefinition, false);
  
      Response.ResponseBuilder builder = Response.status(Response.Status.OK);
      return builder.build();
    }
  
    protected ViewDataMigrationUtility getViewDataMigrationUtility() {
      if (viewDataMigrationUtility == null) {
        viewDataMigrationUtility = new ViewDataMigrationUtility(viewRegistry);
      }
      return viewDataMigrationUtility;
    }
  
    protected void setViewDataMigrationUtility(ViewDataMigrationUtility viewDataMigrationUtility) {
      this.viewDataMigrationUtility = viewDataMigrationUtility;
    }
  }
  