mirror of
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99 lines
3.5 KiB
JavaScript
99 lines
3.5 KiB
JavaScript
"use strict";
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// The MIT License (MIT)
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//
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// Copyright (c) 2017 Firebase
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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Object.defineProperty(exports, "__esModule", { value: true });
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const cloud_functions_1 = require("../cloud-functions");
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/** @internal */
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exports.provider = 'google.pubsub';
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/** @internal */
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exports.service = 'pubsub.googleapis.com';
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/** Select Cloud Pub/Sub topic to listen to.
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* @param topic Name of Pub/Sub topic, must belong to the same project as the function.
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*/
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function topic(topic) {
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return _topicWithOpts(topic, {});
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}
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exports.topic = topic;
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/** @internal */
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function _topicWithOpts(topic, opts) {
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if (topic.indexOf('/') !== -1) {
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throw new Error('Topic name may not have a /');
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}
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return new TopicBuilder(() => {
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if (!process.env.GCLOUD_PROJECT) {
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throw new Error('process.env.GCLOUD_PROJECT is not set.');
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}
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return `projects/${process.env.GCLOUD_PROJECT}/topics/${topic}`;
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}, opts);
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}
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exports._topicWithOpts = _topicWithOpts;
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/** Builder used to create Cloud Functions for Google Pub/Sub topics. */
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class TopicBuilder {
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/** @internal */
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constructor(triggerResource, opts) {
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this.triggerResource = triggerResource;
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this.opts = opts;
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}
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/** Handle a Pub/Sub message that was published to a Cloud Pub/Sub topic */
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onPublish(handler) {
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return cloud_functions_1.makeCloudFunction({
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handler,
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provider: exports.provider,
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service: exports.service,
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triggerResource: this.triggerResource,
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eventType: 'topic.publish',
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dataConstructor: raw => new Message(raw.data),
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opts: this.opts,
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});
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}
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}
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exports.TopicBuilder = TopicBuilder;
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/**
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* A Pub/Sub message.
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*
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* This class has an additional .json helper which will correctly deserialize any
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* message that was a JSON object when published with the JS SDK. .json will throw
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* if the message is not a base64 encoded JSON string.
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*/
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class Message {
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constructor(data) {
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[this.data, this.attributes, this._json] = [
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data.data,
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data.attributes || {},
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data.json,
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];
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}
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get json() {
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if (typeof this._json === 'undefined') {
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this._json = JSON.parse(new Buffer(this.data, 'base64').toString('utf8'));
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}
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return this._json;
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}
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toJSON() {
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return {
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data: this.data,
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attributes: this.attributes,
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};
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}
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}
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exports.Message = Message;
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