Examples with DataSetWithTableSchema com.thinkbiganalytics.kylo.catalog.rest.model.DataSetWithTableSchema used on opensource projects

Example 1 with DataSetWithTableSchema

use of com.thinkbiganalytics.kylo.catalog.rest.model.DataSetWithTableSchema in project kylo by Teradata.

the class DataSourceController method createJdbcTableDataSet.

/**
 * Gets the schema of the specified table using the specified data source.
 *
 * @param dataSourceId the data source id
 * @param tableName    the table name
 * @param schema       the schema name, or {@code null} to search all schemas
 * @return the table and field details
 */
@POST
@Path("{id}/tables/{tableName}/dataset")
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Gets the schema of the specified table.", notes = "Connects to the database specified by the data source.")
@ApiResponses({ @ApiResponse(code = 200, message = "Returns the table schema.", response = DataSetWithTableSchema.class), @ApiResponse(code = 403, message = "Access denied.", response = RestResponseStatus.class), @ApiResponse(code = 404, message = "A JDBC data source with that id does not exist.", response = RestResponseStatus.class), @ApiResponse(code = 500, message = "NiFi or the database are unavailable.", response = RestResponseStatus.class) })
public Response createJdbcTableDataSet(@PathParam("id") final String dataSourceId, @PathParam("tableName") final String tableName, @QueryParam("schema") final String schema) {
    // TODO Verify user has access to data source
    // Require admin permission if the results should include unencrypted credentials.
    final boolean encryptCredentials = true;
    accessController.checkPermission(AccessController.SERVICES, encryptCredentials ? FeedServicesAccessControl.ACCESS_DATASOURCES : FeedServicesAccessControl.ADMIN_DATASOURCES);
    DataSetWithTableSchema dataSetWithTableSchema = null;
    boolean hasAccess = false;
    try {
        // ensure the user can read teh datasource
        DataSource encryptedSource = metadataService.read(() -> {
            return findDataSource(dataSourceId, true);
        });
        hasAccess = encryptedSource != null;
        if (hasAccess) {
            // fetch the datasource as a service account to get the creds.
            DataSource dataSource = metadataService.read(() -> {
                return findDataSource(dataSourceId, false);
            }, MetadataAccess.SERVICE);
            // describe the datasource and table
            CatalogTableSchema tableSchema = tableManager.describeTable(dataSource, schema, tableName);
            if (tableSchema != null) {
                DataSet dataSet = new DataSet();
                // assign the datasource to this dataset with encrypted credentials
                dataSet.setDataSource(encryptedSource);
                String fullTableName = (tableSchema.getTable() != null) ? tableSchema.getTable().getQualifiedIdentifier() : HiveUtils.quoteIdentifier(tableSchema.getSchemaName(), tableSchema.getName());
                dataSet.setTitle(tableSchema.getSchemaName() + "." + tableSchema.getName());
                DefaultDataSetTemplate defaultDataSetTemplate = DataSetUtil.mergeTemplates(dataSet);
                List<String> paths = defaultDataSetTemplate.getPaths();
                String format = defaultDataSetTemplate.getFormat();
                Map<String, String> options = defaultDataSetTemplate.getOptions();
                if (options == null) {
                    options = new HashMap<>();
                }
                if ("hive".equalsIgnoreCase(format.toLowerCase())) {
                    if (paths == null) {
                        paths = new ArrayList<>();
                    }
                    paths.add(fullTableName);
                }
                options.put("dbtable", fullTableName);
                dataSet.setFormat(format);
                dataSet.setPaths(paths);
                dataSet.setOptions(options);
                DataSet dataSet1 = dataSetService.findOrCreateDataSet(dataSet, encryptCredentials);
                dataSetWithTableSchema = new DataSetWithTableSchema(dataSet1, tableSchema);
            } else {
                if (log.isErrorEnabled()) {
                    log.error("Failed to describe tables for schema [" + schema + "], table [" + tableName + "], dataSource [" + dataSourceId + "] ");
                }
                final RestResponseStatus status = new RestResponseStatus.ResponseStatusBuilder().message(getMessage("catalog.datasource.describeTable.error", tableName, schema)).url(request.getRequestURI()).buildError();
                throw new InternalServerErrorException(Response.serverError().entity(status).build());
            }
        // });
        } else {
            // no acceess
            final RestResponseStatus status = new RestResponseStatus.ResponseStatusBuilder().message(getMessage("catalog.datasource.forbidden")).url(request.getRequestURI()).buildError();
            throw new InternalServerErrorException(Response.serverError().entity(status).build());
        }
    } catch (Exception e) {
        if (exceptionTransformer.causesInChain(e)) {
            throw new ThriftConnectionException(e);
        }
        final RestResponseStatus status = new RestResponseStatus.ResponseStatusBuilder().message(getMessage("catalog.datasource.describeTable.error", tableName, schema)).url(request.getRequestURI()).buildError();
        throw new InternalServerErrorException(Response.serverError().entity(status).build());
    }
    return Response.ok(dataSetWithTableSchema).build();
}