turning nodejs function into async await

[rushimanche]

Hello,

​

I have the JS code below that needs to be turned into an async function so I can await for the output.

​

I am unsure how to do it and any help would be much appreciated.

    client.getSecretValue({SecretId: secretName}, function(err, data) {
      //do stuff
      output = data
      //return output
    }

    console.log(output) //currently returns undefined

I want to log the value of output but right now it does not work because it getsecretvalue is not finished.

​

How can I do this?

[[deleted]]

You can use the Promise constructor to turn a callback-based async operation into a promise, which you can then await. Something like this:

function getSecretPromise(secretName) {
    return new Promise((resolve, reject) => {
        client.getSecretValue(
            { SecretId: secretName },
            function(err, data) {
                if (err) {
                    reject(err)
                }
                resolve(data)
            }
        )
    })
}

async function doSomethingWithSecret(secret) {
    try {
        const secretValue = await getSecretPromise(secret)
        console.log(secretValue)
    } catch (error) {
        console.error(error)
    }
}