node.js - 如何在有限的时间内使用AWS Lambda作为后台任务运行？

Question

我要执行的操作是触发lambda在有限的时间内作为后台运行（少于有限的lambda超时）。我使用setInterval和setTimeout，但是它们不能与async / await一起正常工作。请注意，如果在本地作为节点应用程序运行，该代码将起作用。我的代码如下：

const mqtt = require('async-mqtt');

module.exports.startPolling = function(event, context, callback) {
    context.callbackWaitsForEmptyEventLoop = false
    let runInterval = setInterval( async() => {
    await run("tram", "#");
  }, 1000);
  setTimeout(() => { clearInterval(runInterval)}, 5000); 
}


const run = async(mode, route) => {  
  console.log("Starting");
    try {
        client = await mqtt.connectAsync('mqtts://mqtt.hsl.fi:8883/');
        await client.subscribe(`/hfp/v2/journey/+/vp/${mode}/${route}`); 
        response = await getMessageAsync(client, "message");
        console.log(response.toString());
        await client.end();
        console.log("Done");
    } catch (e){
        console.log(e.stack);
        process.exit();
    }
}

const getMessageAsync = (client, ...args) => {
  return new Promise((resolve, reject) => {
    client.on(...args, (topic, message) => {
      resolve(message);
    });
  });
}

Answer 1

AWS Lambda函数具有当前限制，只能在超时之前最多执行一个进程15分钟，您可以查看AWS BATCH