Question

我在NodeJS上运行lambda函数时遇到了奇怪的问题。

根据CloudWatch日志，它看起来像跳过~10行代码而没有向日志显示~3个打印输出。

缺少的第一个日志是运行MySQL RDS的查询：

 var query = con.query(myquery,[orders.SupplierID,orders.sub,orders.DeliveryDate, orders.CustomerComments,orders.TrackingNumber,orders.orderJson],function(err,rows){
console.log(query.sql);
if(err){ 
      console.log("The Query = ",query.sql);
      console.log('ERROR DB' , err);
      throw err;
}

使用：https://www.npmjs.com/package/mysql

此外，我初始化的变量是获取此特定lambda函数的上一次运行的值。

var executionName = orderIdJson.OrderID.toString() + "_" + new Date().toISOString().replace(/T/, ' ').replace(/\..+/, '').replace(/-/g,'_').replace(' ','_').replace(/:/g,'_');

lambda函数的完整代码如下：

const AWS = require('aws-sdk');
var mysql = require('mysql');
var myrows;

function createConnection() {

  var con = mysql.createConnection({
    host: '****',
    port: '3306',
    user: '*****',
    password: '88888*****',
    database: 'db2b2b'
  });
  return con;
}

function startExecution(orderIdJsonStr) {
  var stepfunctions = null;
  stepfunctions = new AWS.StepFunctions();

  var orderIdJson = JSON.parse(orderIdJsonStr);

  console.log(orderIdJson);

  var executionName = orderIdJson.OrderID.toString() + "_" + new Date().toISOString().replace(/T/, ' ').replace(/\..+/, '').replace(/-/g, '_').replace(' ', '_').replace(/:/g, '_');
  console.log("Order created, starting workflow " + executionName);

  var params = null;

  params = {
    stateMachineArn: 'arn:aws:states:us-east-1:453682599770:stateMachine:Post-Order-WF',
    input: orderIdJsonStr,
    name: executionName
  };

  console.log(params);


  // start a state machine
  stepfunctions.startExecution(params, (err, data) => {
    if (err) {
      // *** THIS IS WHERE THE LOG STARTS AGAIN ***
      console.log(err);
      console.log("could not create order", orderIdJson)
      //callback(err, null);
      return;
    }

    const response = {
      statusCode: 200,
      body: JSON.stringify({
        message: 'started state machine',
        result: data
      })
    };
  });
}

exports.handler = (event, context, callback) => {

  console.log("EVENT", event);

  var con = createConnection();

  con.connect(function(err) {
    if (err) {
      console.log('Error connecting to Db');
      console.log(err);
      return;
    }

  });

  console.log("con", con);

  var orders = {
    SupplierID: event['body-json'].SupplierID,
    sub: event.context.sub,
    DeliveryDate: event['body-json'].DeliveryDate,
    CustomerComments: event['body-json'].CustomerComments,
    TrackingNumber: event['body-json'].TrackingNumber,
    orderJson: event['body-json'].orderJson
  };

  console.log("orders", orders);

  var myquery = 'call usp_createOrder(?,?,?,?,?,?)';

  console.log("myquery", myquery);
  // *** myquery IS WHERE THE LOG STOPS ***

  var query = con.query(myquery, [orders.SupplierID, orders.sub, orders.DeliveryDate, orders.CustomerComments, orders.TrackingNumber, orders.orderJson], function(err, rows) {
    console.log(query.sql);
    if (err) {
      console.log("The Query = ", query.sql);
      console.log('ERROR DB', err);
      throw err;
    }

    myrows = rows;

    console.log(myrows);

    var orderIdJsonStr = JSON.stringify(myrows[0][0]);

    console.log(orderIdJsonStr);

    startExecution(orderIdJsonStr);

    con.end(function(err) {
      const res = myrows;
      console.log(res[0]);
      context.succeed(res[0]);
    });
  });
};

谢谢！

AWS Lambda函数跳过代码\日志丢失

0 个答案: