在 Nodejs Express Azure WebApp 应用程序中使用 Azure AppInsights

Question

如何使用所有路由配置 Azure AppInsights 来记录异常和控制台语句？

这是appInsights.js：

const appInsights = require('applicationinsights');

appInsights.setup(process.env.APPLICATIONINSIGHTS_CONNECTION_STRING)
.setAutoCollectConsole(true, true)
.setAutoCollectExceptions(true)
.start();

module.exports = appInsights

路线/index.js：

var express = require('express');
var router = express.Router();
const { appInsights } = require('../services/appInsights');
const { botService } = require('../services/bot');

router.get('/', function (req, res, next) {
  res.render('index', { title: 'Express' });
});

router.post('/api/messages', async function (req, res, next) {
  console.log("--inside /messages--")
  try {
  //call a method from bot.js
    });
  }
  catch (error) {
    console.error('Error in /messages:', error);
    appInsights.defaultClient.trackException({ exception: error });
    res.status(500).send('Internal Server Error');
  }

目前，所有内容都在 App Insights 中记录为“跟踪”，即使我使用过，例外情况也不会单独显示

appInsights.defaultClient.trackException({ exception: error });

在index.js中，我也不确定如何在bot.js中使用它。我尝试在 Bot.js 中再次导入 appInsights，但这会导致日志重复。我熟悉 AWS，我只是创建了一个 lambda，默认情况下它有 Cloudwatch 日志，这是我第一次在 Azure 上工作。

Answer 1

我能够分别查看异常和跟踪中的日志。

catch 块中处理的异常显示在异常部分。

我已将此 try catch 块代码添加到index.js 文件中

try {
    await someMethod();
    res.status(200).send('Message processed successfully');
  } catch (error) {
    console.error('Error in /messages:', error);
    appInsights.defaultClient.trackException({ exception: error });
    res.status(500).send('Internal Server Error');
  }

我的index.js文件：

const express = require('express');
const router = express.Router();
const appInsights = require('../services/appInsights'); 
const { someMethod } = require('../services/bot'); 
router.get('/', function (req, res, next) {
  res.send('API running at: /api/names, /api/error, /api/dependency');
});
router.get('/api/names', (req, res, next) => {
  res.json(['Tony', 'Lisa', 'Michael', 'Ginger', 'Food']);
});
router.get('/api/error', (req, res, next) => {
  try {
    throw new Error('This is a test error');
  } catch (error) {

    appInsights.defaultClient.trackException({ exception: error });  
    res.status(500).json({ error: 'Internal Server Error' });
  }
});
router.post('/api/messages', async function (req, res, next) {
  console.log("--inside /messages--");
  try {
    await someMethod();
    res.status(200).send('Message processed successfully');
  } catch (error) {
    console.error('Error in /messages:', error);
    appInsights.defaultClient.trackException({ exception: error });
    res.status(500).send('Internal Server Error');
  }
});
module.exports = router;

我的bot.js文件：

const appInsights = require('../services/appInsights');
async function someMethod() {
  try {
        console.log("Simulated successful process in bot service");
    return "Success";
  } catch (error) {
    console.error('Error in bot service:', error);
    appInsights.defaultClient.trackException({ exception: error });
    throw error;
  }
}
module.exports = {
  someMethod
};

我在 appInsights.js 中添加了更多方法

我的appInsights.js文件

const  appInsights  =  require('applicationinsights');
appInsights.setup("
process.env.APPLICATIONINSIGHTS_CONNECTION_STRING")
.setAutoDependencyCorrelation(true)
.setAutoCollectRequests(true)
.setAutoCollectPerformance(true, true)
.setAutoCollectExceptions(true)
.setAutoCollectDependencies(true)
.setAutoCollectConsole(true, true)
.setUseDiskRetryCaching(true)
.setSendLiveMetrics(false)
.setDistributedTracingMode(appInsights.DistributedTracingModes.AI_AND_W3C)
.start();
module.exports  =  appInsights;

我的app.js文件：

const express = require('express');
const app = express();
const indexRouter = require('./routes/index');
const appInsights = require('./services/appInsights');
app.use(express.json());
app.use((req, res, next) => {
  appInsights.defaultClient.trackRequest({ name: req.method + ' ' + req.url, url: req.url, time: new Date(), duration: 0, resultCode: res.statusCode, success: true });
  next();
});
app.use('/', indexRouter);
app.use((err, req, res, next) => {
  console.error('Unhandled error:', err);
  appInsights.defaultClient.trackException({ exception: err });
  res.status(500).send('Internal Server Error');
});
const port = process.env.PORT || 3000;
app.set('port', port);
app.listen(port, () => {
  console.log(`Server is running on port ${port}`);
});

现在，对于每条路线，我都有 App Insights 日志跟踪。