Lambda is not waiting for Async/Await-CodePudding

Lamda ends the process and it's not waiting for the API response. here is my code:

exports.handler = async (event, context, cb) => {

 try {
    console.log('FETCHING RECORDS FROM DATOCMS')
    const allItems = await client.items.all({}, { allPages: true })
    if (!fs.existsSync(backupDir)){
        // Create backup directory
        console.log('CRETING BACKUP DIRECTORY')
        fs.mkdirSync(backupDir, { recursive: true });
    }

    console.log('FILL JSON WITH RECORDS FETCHED FROM DATOCMS')
    fs.writeFileSync('backup/records.json', JSON.stringify(allItems, null, 2));

    console.log('ADDING BACKUP FOLDER TO ZIP')
    zip.addLocalFolder(backupDir);
    const zipFileContents = zip.toBuffer();
    
    const params = {
        Bucket: S3_BUCKET,
        Key: `backup_zip-${backupDate}`,
        Body: zipFileContents,
        ContentType: "application/zip",
        ContentDisposition: `attachment; filename="${fileName}-${backupDate}"`
    }

    console.log('UPLOADING ZIP TO S3', params)
    s3.putObject(params, (err, data) => {
        if (err) {
            cb(null, 'Error')
            throw new Error('The zip file could not be uploaded', err);
        }
        console.log('Uploaded correctly')
        cb(null, 'Success')
        fs.rmdirSync(backupDir, { recursive: true });
    })
 } catch (err) {
    cb(null, 'Error..')
    throw new Error('An error occurred', err)
 }
}

I also tried adding this two lines with no luck

 setInterval(() => {}, 1000);
 context.callbackWaitsForEmptyEventLoop = false;

Can anyone help me? I've been testing Promises, Async/Await, Callbacks and no luck with that. Thanks!

This is the response in CloudWatch

CodePudding user response：

Try to map the promises, then await on Promise.all. I'm not sure if all returns array of promises.

const promises =  client.items.map(it=>...)
const promises =  client.items.all(it=>...)
await Promise.all(promises)

CodePudding user response：

You aren't waiting for s3.putObject. It should be:

const data = s3.putObject(params).promise();

You handle the error in a try/catch.

CodePudding user response：

Remove the async keyword from the handler. You can't use the callback function in the async/await function.

Try to use the aws sdk function with .promise();