I am new to amazon s3 and am trying to use node.js to upload JSON into a file. My object is users, and it has a bunch of keys and values in it. Here is how I'm uploading it:
s3.putObject({Bucket: 'currenteventstest',Key: 'users.json',Body: users, ContentType: "application/json"});
However, when I re download it, it's just an empty object.
Adding a callback function fixes the problem:
s3.putObject({
Bucket: 'currenteventstest',
Key: 'users.json',
Body: JSON.stringify(users),
ContentType: "application/json"},
function (err,data) {
console.log(JSON.stringify(err) + " " + JSON.stringify(data));
}
);
I don't have enough reputation to comment, but for what its worth with the new aws-sdk version you can use the promise chain when posting the JSON instead of a callback:
try{
await s3.putObject({
Bucket: 'currenteventstest',
Key: 'users.json',
Body: JSON.stringify(users),
ContentType: 'application/json; charset=utf-8'
}).promise();
}
catch(e){
throw e
}
I had an ES6 Map in my data, which gets stringified to empty by default. I had to refer to below answer to address the issue by manually adding a replacer function to the JSON.Stringify