express框架跨域 CORS, exec调用命令行

 

* install

npm install --save express --registry=https://registry.npm.taobao.org

 

* trigger.js

// curl -i http://172.16.0.224:8088/ -d ''

// throw new Error('Can\'t set headers after they are sent.');
var express = require('express');
var app = express();
var exec = require('child_process').exec;

app.all('*', function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "X-Requested-With,Content-Type");
  res.header("Access-Control-Allow-Credentials", "true");
  res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
  res.header("X-Powered-By",' Express 4.17.1');
  res.header("Content-Type", "application/json;charset=utf-8");
  next();
});

app.post("/", function(req, res) {
  var cmd = "gatsby build";

  exec(cmd, {
    cwd: "/usr/ET/project/zktWeb",
    timeout: 300000,
  }, function(err, stdout, stderr) {
    if (err) {
      return res.send({
        code: 1,
        data: null,
        message: stderr
      });
    }
    console.log(stdout);
    res.end();
  });

  return res.json({
    code: 0,
    data: null,
    message: "success"
  })
});

var server = app.listen("8088", function() {
  var host = server.address().address;
  var port = server.address().port;

  console.log("app is listening http://%s:%d", host, port)
});

* run:

sudo yum install supervisor

sudo emacs /etc/supervisord.d/zktWebTrigger.ini

[program:zktWebTrigger]
command = /usr/local/node/10.16.0/bin/node /usr/ET/project/zktWeb/trigger.js
directory = /usr/ET/project/zktWeb
stdout_logfile = /var/local/logs/zktWebTrigger-info.log
stderr_logfile =  /var/local/logs/zktWebTrigger-error.log
environment = PORT=8088

sudo /usr/bin/supervisorctl reload

sudo /usr/bin/supervisorctl restart zktWebTrigger

sudo lsof -i:8088

COMMAND  PID USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
node    4889 root   19u  IPv6 9476295      0t0  TCP *:radan-http (LISTEN)