javascript - Dialogflow Fulfillment webhook 调用失败

Question

我是 dialogflow 实现的新手，我正在尝试根据用户问题从新闻 API 中检索新闻。我遵循了新闻 API 提供的文档，但我无法从搜索结果中捕捉到任何响应，当我在控制台中运行该函数时，它不是错误。我更改了代码，现在看起来它正在到达 newsapi 端点，但它没有获取任何结果。我正在使用 https://newsapi.org/docs/client-libraries/node-js请求搜索有关该主题的所有内容。当我诊断该函数时，它显示“Webhook 调用失败。错误:不可用。”

'use strict';
const functions = require('firebase-functions');
const {WebhookClient} = require('dialogflow-fulfillment');
const {Card, Suggestion} = require('dialogflow-fulfillment');
const http = require('http');


const host = 'newsapi.org';
const NewsAPI = require('newsapi');
const newsapi = new NewsAPI('63756dc5caca424fb3d0343406295021');

process.env.DEBUG = 'dialogflow:debug';

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((req, res) =>
{
  // Get the city 
  let search = req.body.queryResult.parameters['search'];// search is a required param
  

  // Call the weather API
  callNewsApi(search).then((response) => {
    res.json({ 'fulfillmentText': response }); // Return the results of the news API to Dialogflow
  }).catch((xx) => {
    console.error(xx);
    res.json({ 'fulfillmentText': `I don't know the news but I hope it's good!` });
  });
});

function callNewsApi(search) 
{
  console.log(search);
  newsapi.v2.everything
  (
    { 
        q: 'search',
        langauge: 'en',
        sortBy: 'relevancy',
        source: 'cbc-news',
        domains: 'cbc.ca',
        from: '2019-12-31',
        to: '2020-12-12',
        page: 2
    }
  ).then (response => {console.log(response);
                       {                               

                      
     let articles = response['data']['articles'][0];
                      

        // Create response
        
let responce = `Current news in the $search with following title is  ${articles['titile']} which says that 
        ${articles['description']}`;

        // Resolve the promise with the output text
        console.log(output);
       
                       }
   });  
  

}

这里也是 RAW API 响应

{
  "responseId": "a871b8d2-16f2-4873-a5d1-b907a07adb9a-b4ef8d5f",
  "queryResult": {
    "queryText": "what is the latest news about toronto",
    "parameters": {
      "search": [
        "toronto"
      ]
    },
    "allRequiredParamsPresent": true,
    "fulfillmentMessages": [
      {
        "text": {
          "text": [
            ""
          ]
        }
      }
    ],
    "intent": {
      "name": "projects/misty-ktsarh/agent/intents/b52c5774-e5b7-494a-8f4c-f783ebae558b",
      "displayName": "misty.news"
    },
    "intentDetectionConfidence": 1,
    "diagnosticInfo": {
      "webhook_latency_ms": 543
    },
    "languageCode": "en"
  },
  "webhookStatus": {
    "code": 14,
    "message": "Webhook call failed. Error: UNAVAILABLE."
  },
  "outputAudio": "UklGRlQqAABXQVZFZm10IBAAAAABAAEAwF0AAIC7AAACABAAZGF0YTAqAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... (The content is truncated. Click `COPY` for the original JSON.)",
  "outputAudioConfig": {
    "audioEncoding": "OUTPUT_AUDIO_ENCODING_LINEAR_16",
    "synthesizeSpeechConfig": {
      "speakingRate": 1,
      "voice": {}
    }
  }
} 

这是履行请求:

{
  "responseId": "a871b8d2-16f2-4873-a5d1-b907a07adb9a-b4ef8d5f",
  "queryResult": {
    "queryText": "what is the latest news about toronto",
    "parameters": {
      "search": [
        "toronto"
      ]
    },
    "allRequiredParamsPresent": true,
    "fulfillmentMessages": [
      {
        "text": {
          "text": [
            ""
          ]
        }
      }
    ],
    "intent": {
      "name": "projects/misty-ktsarh/agent/intents/b52c5774-e5b7-494a-8f4c-f783ebae558b",
      "displayName": "misty.news"
    },
    "intentDetectionConfidence": 1,
    "diagnosticInfo": {
      "webhook_latency_ms": 543
    },
    "languageCode": "en"
  },
  "webhookStatus": {
    "code": 14,
    "message": "Webhook call failed. Error: UNAVAILABLE."
  },
  "outputAudio": "UklGRlQqAABXQVZFZm10IBAAAAABAAEAwF0AAIC7AAACABAAZGF0YTAqAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... (The content is truncated. Click `COPY` for the original JSON.)",
  "outputAudioConfig": {
    "audioEncoding": "OUTPUT_AUDIO_ENCODING_LINEAR_16",
    "synthesizeSpeechConfig": {
      "speakingRate": 1,
      "voice": {}
    }
  }
}

这里还有来自 firebase 控制台的屏幕截图。
谁能指导我在这里缺少什么？

Answer 1

关键是错误消息中的前三行:

Function failed on loading user code. Error message: Code in file index.js can't be loaded.
Did you list all required modules in the package.json dependencies?
Detailed stack trace: Error: Cannot find module 'newsapi'

据说 newsapi模块无法加载，最可能的原因是您没有在 package.json 中将其列为依赖项。文件。

如果您使用的是 Dialogflow 内联编辑器，则需要选择 package.json选项卡并在 dependencies 中添加一行部分。



更新

目前尚不清楚您何时/何地收到“不可用”错误，但如果您使用 Dialogflow 的内联编辑器，一个可能的原因是它使用 Firebase“Spark”定价计划，该计划对网络调用有限制在 Google 网络之外。

您可以 upgrade to the Blaze plan ，这确实需要信用卡，但确实包含 Spark 计划的免费套餐，因此在少量使用期间您不应产生任何费用。这将允许网络调用。

基于 TypeError: Cannot read property '0' of undefined 的更新

这表明属性(或可能是属性的索引)正在尝试引用未定义的内容。

目前尚不清楚这可能是哪一行，但这些行都是可疑的:

    let response = JSON.parse(body);
    let source = response['data']['source'][0];
    let id = response['data']['id'][0];
    let name = response['data']['name'][0];
    let author = response['author'][0];
    let title = response['title'][0];
    let description = response['description'][0];

因为它们都在引用一个属性。我会检查到底是什么返回并存储在 response .例如，发回的内容中是否没有“数据”或“作者”字段？

看 https://newsapi.org/docs/endpoints/everything ，看起来这些都不是字段，但有一个 articles发回的属性，其中包含一系列文章。您可能希望对其进行索引并获得所需的属性。

更新

看起来像这样，尽管您正在使用这一行将参数加载到变量中

// Get the city and date from the request
let search = req.body.queryResult.parameters['search'];// city is a required param

您实际上并没有使用 search随地变化。相反，您似乎正在使用此行将文字字符串“搜索”传递给您的函数

callNewsApi('search').then((output) => {

我猜它会搜索“搜索”这个词。

您指出“它进入了捕获部分”，这表明调用中出现了问题。您不会在 catch 部分显示任何日志记录，并且记录抛出的异常可能很有用，因此您知道它为什么会进入 catch 部分。就像是

}).catch((xx) => {
  console.error(xx);
  res.json({ 'fulfillmentText': `I don't know the news but I hope it's good!` });
});

是正常的，但是因为看起来您正在将其登录到 .on('error')部分，表明该错误可能有用。