@google-cloud/bigquery/build/src/job.d.ts

/*!
 * Copyright 2014 Google Inc. All Rights Reserved.
 *
 * Licensed 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.
 */
/*!
 * @module bigquery/job
 */
import { MetadataCallback, Operation } from '@google-cloud/common';
import { ResourceStream } from '@google-cloud/paginator';
import { BigQuery, IntegerTypeCastOptions, JobRequest, PagedRequest, QueryRowsCallback, QueryRowsResponse, RequestCallback } from './bigquery';
import { RowMetadata } from './table';
import bigquery from './types';
export declare type JobMetadata = bigquery.IJob;
export declare type JobOptions = JobRequest<JobMetadata>;
export declare type CancelCallback = RequestCallback<bigquery.IJobCancelResponse>;
export declare type CancelResponse = [bigquery.IJobCancelResponse];
export declare type QueryResultsOptions = {
    job?: Job;
    wrapIntegers?: boolean | IntegerTypeCastOptions;
} & PagedRequest<bigquery.jobs.IGetQueryResultsParams>;
/**
 * @callback QueryResultsCallback
 * @param {?Error} err An error returned while making this request.
 * @param {array} rows The results of the job.
 */
/**
 * @callback ManualQueryResultsCallback
 * @param {?Error} err An error returned while making this request.
 * @param {array} rows The results of the job.
 * @param {?object} nextQuery A pre-made configuration object for your next
 *     request. This will be `null` if no additional results are available.
 *     If the query is not yet complete, you may get empty `rows` and
 *     non-`null` `nextQuery` that you should use for your next request.
 * @param {object} apiResponse The full API response.
 */
/**
 * Job objects are returned from various places in the BigQuery API:
 *
 * - {@link BigQuery#getJobs}
 * - {@link BigQuery#job}
 * - {@link BigQuery#query}
 * - {@link BigQuery#createJob}
 * - {@link Table#copy}
 * - {@link Table#createWriteStream}
 * - {@link Table#extract}
 * - {@link Table#load}
 *
 * They can be used to check the status of a running job or fetching the results
 * of a previously-executed one.
 *
 * @class
 * @param {BigQuery} bigQuery {@link BigQuery} instance.
 * @param {string} id The ID of the job.
 * @param {object} [options] Configuration object.
 * @param {string} [options.location] The geographic location of the job.
 *      Required except for US and EU.
 *
 * @example
 * ```
 * const {BigQuery} = require('@google-cloud/bigquery');
 * const bigquery = new BigQuery();
 *
 * const job = bigquery.job('job-id');
 *
 * //-
 * // All jobs are event emitters. The status of each job is polled
 * // continuously, starting only after you register a "complete" listener.
 * //-
 * job.on('complete', (metadata) => {
 *   // The job is complete.
 * });
 *
 * //-
 * // Be sure to register an error handler as well to catch any issues which
 * // impeded the job.
 * //-
 * job.on('error', (err) => {
 *   // An error occurred during the job.
 * });
 *
 * //-
 * // To force the Job object to stop polling for updates, simply remove any
 * // "complete" listeners you've registered.
 * //
 * // The easiest way to do this is with `removeAllListeners()`.
 * //-
 * job.removeAllListeners();
 * ```
 */
declare class Job extends Operation {
    bigQuery: BigQuery;
    location?: string;
    projectId?: string;
    getQueryResultsStream(options?: QueryResultsOptions): ResourceStream<RowMetadata>;
    constructor(bigQuery: BigQuery, id: string, options?: JobOptions);
    /**
     * @callback CancelCallback
     * @param {?Error} err Request error, if any.
     * @param {object} metadata The job metadata.
     * @param {object} apiResponse The full API response.
     */
    /**
     * @typedef {array} CancelResponse
     * @property {object} 0 The job metadata.
     * @property {object} 1 The full API response.
     */
    /**
     * Cancel a job. Use {@link Job#getMetadata} to see if the cancel
     * completes successfully. See an example implementation below.
     *
     * See {@link https://cloud.google.com/bigquery/docs/reference/v2/jobs/cancel| Jobs: get API Documentation}
     *
     * @param {CancelCallback} [callback] The callback function.
     * @param {?error} callback.err An error returned while making this request.
     * @param {object} callback.apiResponse The full API response.
     * @returns {Promise<CancelResponse>}
     *
     * @example
     * ```
     * const {BigQuery} = require('@google-cloud/bigquery');
     * const bigquery = new BigQuery();
     *
     * const job = bigquery.job('job-id');
     *
     * job.cancel((err, apiResponse) =>{
     *   // Check to see if the job completes successfully.
     *   job.on('error', (err) => {});
     *   job.on('complete', (metadata) => {});
     * });
     *
     * //-
     * // If the callback is omitted, we'll return a Promise.
     * //-
     * job.cancel().then((data) => {
     *   const apiResponse = data[0];
     * });
     * ```
     */
    cancel(): Promise<CancelResponse>;
    cancel(callback: CancelCallback): void;
    /**
     * Get the results of a job.
     *
     * See {@link https://cloud.google.com/bigquery/docs/reference/v2/jobs/getQueryResults| Jobs: getQueryResults API Documentation}
     *
     * @param {object} [options] Configuration object.
     * @param {boolean} [options.autoPaginate=true] Have pagination handled
     *     automatically.
     * @param {number} [options.maxApiCalls] Maximum number of API calls to make.
     * @param {number} [options.maxResults] Maximum number of results to read.
     * @param {string} [options.pageToken] Page token, returned by a previous call,
     *     to request the next page of results. Note: This is automatically added
     * to the `nextQuery` argument of your callback.
     * @param {number} [options.startIndex] Zero-based index of the starting row.
     * @param {number} [options.timeoutMs] How long to wait for the query to
     *     complete, in milliseconds, before returning. Default is 10 seconds.
     *     If the timeout passes before the job completes, an error will be returned
     *     and the 'jobComplete' field in the response will be false.
     * @param {boolean|IntegerTypeCastOptions} [options.wrapIntegers=false] Wrap values
     *     of 'INT64' type in {@link BigQueryInt} objects.
     *     If a `boolean`, this will wrap values in {@link BigQueryInt} objects.
     *     If an `object`, this will return a value returned by
     *     `wrapIntegers.integerTypeCastFunction`.
     * @param {QueryResultsCallback|ManualQueryResultsCallback} [callback] The
     *     callback function. If `autoPaginate` is set to false a
     *     {@link ManualQueryResultsCallback} should be used.
     * @returns {Promise<QueryResultsCallback>}
     *
     * @example
     * ```
     * const {BigQuery} = require('@google-cloud/bigquery');
     * const bigquery = new BigQuery();
     *
     * const job = bigquery.job('job-id');
     *
     * //-
     * // Get all of the results of a query.
     * //-
     * job.getQueryResults((err, rows) => {
     *   if (!err) {
     *     // rows is an array of results.
     *   }
     * });
     *
     * //-
     * // Customize the results you want to fetch.
     * //-
     * job.getQueryResults({
     *   maxResults: 100
     * }, (err, rows) => {});
     *
     * //-
     * // To control how many API requests are made and page through the results
     * // manually, set `autoPaginate` to `false`.
     * //-
     * function manualPaginationCallback(err, rows, nextQuery, apiResponse) {
     *   if (nextQuery) {
     *     // More results exist.
     *     job.getQueryResults(nextQuery, manualPaginationCallback);
     *   }
     * }
     *
     * job.getQueryResults({
     *   autoPaginate: false
     * }, manualPaginationCallback);
     *
     * //-
     * // If the callback is omitted, we'll return a Promise.
     * //-
     * job.getQueryResults().then((data) => {
     *   const rows = data[0];
     * });
     * ```
     */
    getQueryResults(options?: QueryResultsOptions): Promise<QueryRowsResponse>;
    getQueryResults(options: QueryResultsOptions, callback: QueryRowsCallback): void;
    getQueryResults(callback: QueryRowsCallback): void;
    /**
     * This method will be called by `getQueryResultsStream()`. It is required to
     * properly set the `autoPaginate` option value.
     *
     * @private
     */
    getQueryResultsAsStream_(options: QueryResultsOptions, callback: QueryRowsCallback): void;
    /**
     * Poll for a status update. Execute the callback:
     *
     *   - callback(err): Job failed
     *   - callback(): Job incomplete
     *   - callback(null, metadata): Job complete
     *
     * @private
     *
     * @param {function} callback
     */
    poll_(callback: MetadataCallback): void;
}
/**
 * Reference to the {@link Job} class.
 * @name module:@google-cloud/bigquery.Job
 * @see Job
 */
export { Job };