tra-analysis/website/functions/node_modules/@google-cloud/storage/src/notification.js
2019-01-06 13:02:35 -06:00

351 lines
9.9 KiB
JavaScript

/*!
* Copyright 2017 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.
*/
'use strict';
const common = require('@google-cloud/common');
const is = require('is');
const util = require('util');
/**
* A Notification object is created from your {@link Bucket} object using
* {@link Bucket#notification}. Use it to interact with Cloud Pub/Sub
* notifications.
*
* @see [Cloud Pub/Sub Notifications for Google Cloud Storage]{@link https://cloud.google.com/storage/docs/pubsub-notifications}
*
* @class
* @hideconstructor
*
* @param {Bucket} bucket The bucket instance this notification is attached to.
* @param {string} id The ID of the notification.
*
* @example
* const storage = require('@google-cloud/storage')();
* const myBucket = storage.bucket('my-bucket');
*
* const notification = myBucket.notification('1');
*/
function Notification(bucket, id) {
const methods = {
/**
* Creates a notification subscription for the bucket.
*
* @see [Notifications: insert]{@link https://cloud.google.com/storage/docs/json_api/v1/notifications/insert}
*
* @param {Topic|string} topic The Cloud PubSub topic to which this
* subscription publishes. If the project ID is omitted, the current
* project ID will be used.
*
* Acceptable formats are:
* - `projects/grape-spaceship-123/topics/my-topic`
*
* - `my-topic`
* @param {CreateNotificationRequest} [options] Metadata to set for
* the notification.
* @param {CreateNotificationCallback} [callback] Callback function.
* @returns {Promise<CreateNotificationResponse>}
* @throws {Error} If a valid topic is not provided.
*
* @example
* const storage = require('@google-cloud/storage')();
* const myBucket = storage.bucket('my-bucket');
* const notification = myBucket.notification('1');
*
* notification.create(function(err, notification, apiResponse) {
* if (!err) {
* // The notification was created successfully.
* }
* });
*
* //-
* // If the callback is omitted, we'll return a Promise.
* //-
* notification.create().then(function(data) {
* const notification = data[0];
* const apiResponse = data[1];
* });
*/
create: true,
/**
* @typedef {array} NotificationExistsResponse
* @property {boolean} 0 Whether the notification exists or not.
*/
/**
* @callback NotificationExistsCallback
* @param {?Error} err Request error, if any.
* @param {boolean} exists Whether the notification exists or not.
*/
/**
* Check if the notification exists.
*
* @param {NotificationExistsCallback} [callback] Callback function.
* @returns {Promise<NotificationExistsResponse>}
*
* @example
* const storage = require('@google-cloud/storage')();
* const myBucket = storage.bucket('my-bucket');
* const notification = myBucket.notification('1');
*
* notification.exists(function(err, exists) {});
*
* //-
* // If the callback is omitted, we'll return a Promise.
* //-
* notification.exists().then(function(data) {
* const exists = data[0];
* });
*/
exists: true,
};
common.ServiceObject.call(this, {
parent: bucket,
baseUrl: '/notificationConfigs',
id: id.toString(),
createMethod: bucket.createNotification.bind(bucket),
methods: methods,
});
}
util.inherits(Notification, common.ServiceObject);
/**
* @typedef {array} DeleteNotificationResponse
* @property {object} 0 The full API response.
*/
/**
* @callback DeleteNotificationCallback
* @param {?Error} err Request error, if any.
* @param {object} apiResponse The full API response.
*/
/**
* Permanently deletes a notification subscription.
*
* @see [Notifications: delete API Documentation]{@link https://cloud.google.com/storage/docs/json_api/v1/notifications/delete}
*
* @param {object} [options] Configuration options.
* @param {string} [options.userProject] The ID of the project which will be
* billed for the request.
* @param {DeleteNotificationCallback} [callback] Callback function.
* @returns {Promise<DeleteNotificationResponse>}
*
* @example
* const storage = require('@google-cloud/storage')();
* const myBucket = storage.bucket('my-bucket');
* const notification = myBucket.notification('1');
*
* notification.delete(function(err, apiResponse) {});
*
* //-
* // If the callback is omitted, we'll return a Promise.
* //-
* notification.delete().then(function(data) {
* const apiResponse = data[0];
* });
*
* @example <caption>include:samples/notifications.js</caption>
* region_tag:storage_delete_notification
* Another example:
*/
Notification.prototype.delete = function(options, callback) {
if (is.fn(options)) {
callback = options;
options = {};
}
this.request(
{
method: 'DELETE',
uri: '',
qs: options,
},
callback || common.util.noop
);
};
/**
* @typedef {array} GetNotificationResponse
* @property {Notification} 0 The {@link Notification}
* @property {object} 1 The full API response.
*/
/**
* @callback GetNotificationCallback
* @param {?Error} err Request error, if any.
* @param {Notification} notification The {@link Notification}.
* @param {object} apiResponse The full API response.
*/
/**
* Get a notification and its metadata if it exists.
*
* @see [Notifications: get API Documentation]{@link https://cloud.google.com/storage/docs/json_api/v1/notifications/get}
*
* @param {object} [options] Configuration options.
* See {@link Bucket#createNotification} for create options.
* @param {boolean} [options.autoCreate] Automatically create the object if
* it does not exist. Default: `false`.
* @param {string} [options.userProject] The ID of the project which will be
* billed for the request.
* @param {GetNotificationCallback} [callback] Callback function.
* @return {Promise<GetNotificationCallback>}
*
* @example
* const storage = require('@google-cloud/storage')();
* const myBucket = storage.bucket('my-bucket');
* const notification = myBucket.notification('1');
*
* notification.get(function(err, notification, apiResponse) {
* // `notification.metadata` has been populated.
* });
*
* //-
* // If the callback is omitted, we'll return a Promise.
* //-
* notification.get().then(function(data) {
* const notification = data[0];
* const apiResponse = data[1];
* });
*/
Notification.prototype.get = function(options, callback) {
const self = this;
if (is.fn(options)) {
callback = options;
options = {};
}
const autoCreate = options.autoCreate;
delete options.autoCreate;
function onCreate(err, notification, apiResponse) {
if (err) {
if (err.code === 409) {
self.get(options, callback);
return;
}
callback(err, null, apiResponse);
return;
}
callback(null, notification, apiResponse);
}
this.getMetadata(options, function(err, metadata) {
if (err) {
if (err.code === 404 && autoCreate) {
const args = [];
if (!is.empty(options)) {
args.push(options);
}
args.push(onCreate);
self.create.apply(self, args);
return;
}
callback(err, null, metadata);
return;
}
callback(null, self, metadata);
});
};
/**
* @typedef {array} GetNotificationMetadataResponse
* @property {object} 0 The notification metadata.
* @property {object} 1 The full API response.
*/
/**
* @callback GetNotificationMetadataCallback
* @param {?Error} err Request error, if any.
* @param {object} files The notification metadata.
* @param {object} apiResponse The full API response.
*/
/**
* Get the notification's metadata.
*
* @see [Notifications: get API Documentation]{@link https://cloud.google.com/storage/docs/json_api/v1/notifications/get}
*
* @param {object} [options] Configuration options.
* @param {string} [options.userProject] The ID of the project which will be
* billed for the request.
* @param {GetNotificationMetadataCallback} [callback] Callback function.
* @returns {Promise<GetNotificationMetadataResponse>}
*
* @example
* const storage = require('@google-cloud/storage')();
* const myBucket = storage.bucket('my-bucket');
* const notification = myBucket.notification('1');
*
* notification.getMetadata(function(err, metadata, apiResponse) {});
*
* //-
* // If the callback is omitted, we'll return a Promise.
* //-
* notification.getMetadata().then(function(data) {
* const metadata = data[0];
* const apiResponse = data[1];
* });
*
* @example <caption>include:samples/notifications.js</caption>
* region_tag:storage_notifications_get_metadata
* Another example:
*/
Notification.prototype.getMetadata = function(options, callback) {
const self = this;
if (is.fn(options)) {
callback = options;
options = {};
}
this.request(
{
uri: '',
qs: options,
},
function(err, resp) {
if (err) {
callback(err, null, resp);
return;
}
self.metadata = resp;
callback(null, self.metadata, resp);
}
);
};
/*! Developer Documentation
*
* All async methods (except for streams) will return a Promise in the event
* that a callback is omitted.
*/
common.util.promisifyAll(Notification);
/**
* Reference to the {@link Notification} class.
* @name module:@google-cloud/storage.Notification
* @see Notification
*/
module.exports = Notification;