在X射线控制台AWS中未找到跟踪

Question

我尝试了多种方法，但似乎没有任何效果

这就是我所做的，

1. 创建Cloud9实例，启动maven应用程序，添加aws sdk java、x-ray core、x-ray instrumentor、x-ray sdk依赖项，创建DynamoDB客户端运行应用程序，插入数据，但未找到错误子段。手动添加段，错误消失，但没有跟踪
2. 创建Spring Boot应用程序，添加了相同的依赖项，添加了Xray servlet过滤器，添加了begin segment，begin subsegment，没有错误但没有跟踪

我也有更多的方法，但这些方法似乎非常接近。此外，我还没有安装任何代理或守护程序。有人能告诉我哪里出错了吗？

我正在尝试创建一个简单的java应用程序，甚至是一个页面来在DynamoDB中插入数据并获取跟踪信息。

Answer 1

我没有在java共享方面工作的经验，这里是Node JS示例，希望会有所帮助。测试过：https://github.com/aws-samples/aws-xray-sdk-node-sample

const AWSXRay = require('aws-xray-sdk');
const XRayExpress = AWSXRay.express;
const express = require('express');

// Capture all AWS clients we create
const AWS = AWSXRay.captureAWS(require('aws-sdk'));
AWS.config.update({region: process.env.DEFAULT_AWS_REGION || 'us-west-2'});

// Capture all outgoing https requests
AWSXRay.captureHTTPsGlobal(require('https'));
const https = require('https');

// Capture MySQL queries
const mysql = AWSXRay.captureMySQL(require('mysql'));

const app = express();
const port = 3000;

app.use(XRayExpress.openSegment('SampleSite'));

app.get('/', (req, res) => {
  const seg = AWSXRay.getSegment();
  const sub = seg.addNewSubsegment('customSubsegment');
  setTimeout(() => {
    sub.close();
    res.sendFile(`${process.cwd()}/index.html`);
  }, 500);
});

app.get('/aws-sdk/', (req, res) => {
  const ddb = new AWS.DynamoDB();
  const ddbPromise = ddb.listTables().promise();

  ddbPromise.then(function(data) {
    res.send(`ListTables result:\n ${JSON.stringify(data)}`);
  }).catch(function(err) {
    res.send(`Encountered error while calling ListTables: ${err}`);
  });
});

app.get('/http-request/', (req, res) => {
  const endpoint = 'https://amazon.com/';
  https.get(endpoint, (response) => {
    response.on('data', () => {});

    response.on('error', (err) => {
      res.send(`Encountered error while making HTTPS request: ${err}`);
    });

    response.on('end', () => {
      res.send(`Successfully reached ${endpoint}.`);
    });
  });
});

app.get('/mysql/', (req, res) => {
  const mysqlConfig = require('./mysql-config.json');
  const config = mysqlConfig.config;
  const table = mysqlConfig.table;

  if (!config.user || !config.database || !config.password || !config.host || !table) {
    res.send('Please correctly populate mysql-config.json');
    return;
  }

  const connection = mysql.createConnection(config);
  connection.query(`SELECT * FROM ${table}`, (err, results, fields) => {
    if (err) {
      res.send(`Encountered error while querying ${table}: ${err}`);
      return;
    }
    res.send(`Retrieved the following results from ${table}:\n${results}`);
  });

  connection.end();
});

app.use(XRayExpress.closeSegment());

app.listen(port, () => console.log(`Example app listening on port ${port}!`));