How to update an object from an Object Storage bucket

Discover how to update files from an Object Storage bucket with a comprehensive guide.

This guide walks you through updating an object from an Object Storage bucket using the Azion API, Azion CLI, and Azion Runtime.

Updating an object from a bucket

Requirements

To update a bucket:

azion update edge-storage object

Azion CLI will present a series of interactions, so the object can be updated. Run azion update edge-storage bucket -h for further information about the data that can be updated.

You can create an function to update an object from your bucket. To do so:

Access Azion Console > Functions.
Click the + Function button.
Name your function. Example: object-update.
In the Code tab, add the following JavaScript code, passing your bucket’s name and the object key:

import Storage from "azion:storage";

async function handleRequest(event) {

try{

const bucket = “mybucket”;

const storage = new Storage(bucket);

const key = "test";

const inputStream = event.request.body;

let contentLength = event.request.headers.get("content-length");

await storage.put(key, inputStream, { "content-length": contentLength });

return new Response("OK");

}catch(error){

return new Response(error, {status:500});

}

addEventListener("fetch", (event) => {

event.respondWith(handleRequest(event));

});

Remember to replace “mybucket” with your bucket’s name and “test” with the object key.

Click the Save button.

See the Object Storage API reference for more details on functions available for other types of requests.

Once you have the function ready, you need to create an applications that will proxy the process for the bucket and instantiate the function.

Go to Applications first steps Go to how to instantiate an function

Run the following PUT request in your terminal, replacing [TOKEN VALUE] with your personal token, <bucket_name> with the name of the bucket, <object_key> with the key of the object, and path/file.src with the path to your new file:

curl --location --request PUT 'https://api.azion.com/v4/storage/buckets/<bucket_name>/objects/<object_key>' --header 'Accept: application/json' --header 'Authorization: Token [TOKEN VALUE]' --header 'Content-Type: application/octet-stream' --data '@'

You should receive a response similar to this:

{

"state": "executed",

"data": {

"object_key": "people-100.txt"

}