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[英]Is it safe to use Firebase Admin sdk in dialogflow fulfillment when dialogflow talking to 3rd party services?
[英]Using 3rd party API within Dialogflow Fulfillment
我有一個Dialogflow代理,我正在使用內聯編輯器(由Firebase的Cloud Functions提供支持)。 當我嘗試在Intent處理程序中嵌入HTTPS GET處理程序時,它會與日志條目“忽略已完成的函數中的異常”崩潰。 也許有更好的方法來實現承諾,但我是新手。 我可以看到它確實在升級到Blaze計划后執行外部查詢,因此它不是計費帳戶的限制。 無論如何,這是代碼:
'use strict';
const functions = require('firebase-functions');
//const rp = require('request-promise');
const {WebhookClient} = require('dialogflow-fulfillment');
const {Card, Suggestion} = require('dialogflow-fulfillment');
process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements
exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
const agent = new WebhookClient({ request, response });
console.log('Dialogflow Request headers: ' + JSON.stringify(request.headers));
console.log('Dialogflow Request body: ' + JSON.stringify(request.body));
function welcome(agent) {
agent.add(`Welcome to my agent!`);
}
function fallback(agent) {
agent.add(`I didn't understand`);
agent.add(`I'm sorry, can you try again?`);
}
function findWidget(agent) {
const https = require("https");
const url = "https://api.site.com/sub?query=";
agent.add(`Found a widget for you:`);
var widgetName = getArgument('Name');
https.get(url + widgetName, res => {
res.setEncoding("utf8");
let body = "";
res.on("data", data => {
body += data;
});
res.on("end", () => {
body = JSON.parse(body);
agent.add(new Card({
title: `Widget ` + body.name,
text: body.description,
buttonText: 'Open link',
buttonUrl: body.homepage
})
);
});
});
}
// Run the proper function handler based on the matched Dialogflow intent name
let intentMap = new Map();
intentMap.set('Default Welcome Intent', welcome);
intentMap.set('Default Fallback Intent', fallback);
intentMap.set('Find Old Movie Intent', findOldMovie);
intentMap.set('Find Movie Intent', findMovie);
// intentMap.set('your intent name here', googleAssistantHandler);
agent.handleRequest(intentMap);
});
使用Promises的方法不僅僅是“更好”的方法 - agent.handleRequest()
要求您使用Promises,如果您有任何異步調用的代碼。 問題是你的findWidget
函數在https.get
完成運行之前返回,因此回復不會最終被發送。
我傾向於使用request-promise-native包來進行HTTP調用,因為它簡化了很多事情。 (但是,您可以自己將調用包裝在Promise中。)因此,Promise版本可能看起來像這樣(未經測試):
var findWidget = function(agent) {
const request = require('request-promise-native');
const url = "https://api.site.com/sub?query=";
agent.add(`Found a widget for you:`);
var widgetName = getArgument('Name');
return request.get( url+widgetName )
.then( jsonBody => {
var body = JSON.parse(jsonBody);
agent.add(new Card({
title: `Widget ` + body.name,
text: body.description,
buttonText: 'Open link',
buttonUrl: body.homepage
}));
return Promise.resolve( agent );
});
});
}
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