Nodemailer 不会在退出时发送邮件

Question

在我的脚本中，我想使用 Nodemailer 发送一封电子邮件，其中包含有关脚本运行的数据。脚本中间使用了相同的 transporter，我成功发送了电子邮件。但是，退出事件处理程序中的相同代码根本不执行任何操作。没有电子邮件，没有 "Report Sent!" 输出到控制台，尽管我确实得到了 mailOption 变量的输出到控制台。假设异步操作在退出之前可能没有完成，我添加了一个临时延迟步骤来验证这一点。仍然没有生成电子邮件。我做错了什么吗？

function exitHandler(er) {
  end = moment().utc();

  // report template
  var tplPath = path.resolve('report.html');
  var juiceFileDeAsync = deasync(juice.juiceFile);
  var tpl = juiceFileDeAsync(tplPath, { webResources: {images: false} });
  var email = nunjucks.renderString(tpl, {
    startDate: start.format("MMMM Do YYYY, h:mm:ss a"),
    duration: end.diff(start,'seconds'),
    report: sentEmails,
    warns: warns,
    errors: errors
  });
  // email report
  mailOptions.to = '<valid email>';
  mailOptions.html = email;
  transporter.sendMail(mailOptions, function(error, info) {
    console.log('Report sent!', error, info);
  });
  console.log(mailOptions);
  if (er) {
    console.log(er);
  }

  var e = new Date().getTime() + (10 * 1000);
  while (new Date().getTime() <= e) {
    ;
  }

}

// do something when app is closing
process.on('exit', exitHandler);
process.on('uncaughtException', exitHandler);

Answer 1

https://nodejs.org/api/process.html 查看事件：退出文档：

process.on('exit', function(code) {
    // do *NOT* do this
    setTimeout(function() {
        console.log('This will not run');
    }, 0);
    console.log('About to exit with code:', code);
});

once all exit listeners have finished running the process will exit. Therefore you must only perform synchronous operations in this handler.

Nodemailer 不会在退出时发送邮件

Nodemailer Won't Mail On Exit

email

events

node.js

nodemailer