Obstor JavaScript Library for Amazon S3 Compatible Cloud Storage

The Obstor JavaScript Client SDK provides high level APIs to access any Amazon S3 compatible object storage server.

This guide will show you how to install the client SDK and execute an example JavaScript program. For a complete list of APIs and examples, please take a look at the JavaScript Client API Reference documentation.

This document presumes you have a working Node.js development environment, LTS versions v16, v18 or v20.

Download from NPM

npm install --save obstor

Download from Source

git clone https://github.com/obstor/obstor-js
cd obstor-js

npm install -g pnpm
pnpm install
pnpm build
pnpm link --global

Using with TypeScript

obstor>7.1.0 is shipped with builtin type definition, @types/obstor is no longer needed.

Initialize Obstor Client

The following parameters are needed to connect to a Obstor object storage server:

Parameter	Description
endPoint	Hostname of the object storage service.
port	TCP/IP port number. Optional, defaults to 80 for HTTP and 443 for HTTPs.
accessKey	Access key (user ID) of an account in the S3 service.
secretKey	Secret key (password) of an account in the S3 service.
useSSL	Optional, set to 'true' to enable secure (HTTPS) access.

import * as Obstor from 'obstor'

const obstorClient = new Obstor.Client({
  endPoint: 'demo.obstor.net',
  port: 9000,
  useSSL: true,
  accessKey: 'Q3AM3UQ867SPQQA43P2F',
  secretKey: 'zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG',
})

Quick Start Example - File Uploader

This example connects to an object storage server, creates a bucket, and uploads a file to the bucket. It uses the Obstor demo server, a public Obstor cluster located at https://demo.obstor.net.

The demo server runs the latest stable version of Obstor and may be used for testing and development. The access credentials shown in this example are open to the public. All data uploaded to demo should be considered public and non-protected.

file-uploader.mjs

import * as Obstor from 'obstor'

// Instantiate the Obstor client with the object store service
// endpoint and an authorized user's credentials
// demo.obstor.net is the Obstor public test cluster
const obstorClient = new Obstor.Client({
  endPoint: 'demo.obstor.net',
  port: 9000,
  useSSL: true,
  accessKey: 'Q3AM3UQ867SPQQA43P2F',
  secretKey: 'zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG',
})

// File to upload
const sourceFile = '/tmp/test-file.txt'

// Destination bucket
const bucket = 'js-test-bucket'

// Destination object name
const destinationObject = 'my-test-file.txt'

// Check if the bucket exists
// If it doesn't, create it
const exists = await obstorClient.bucketExists(bucket)
if (exists) {
  console.log('Bucket ' + bucket + ' exists.')
} else {
  await obstorClient.makeBucket(bucket, 'us-east-1')
  console.log('Bucket ' + bucket + ' created in "us-east-1".')
}

// Set the object metadata
var metaData = {
  'Content-Type': 'text/plain',
  'X-Amz-Meta-Testing': 1234,
  example: 5678,
}

// Upload the file with fPutObject
// If an object with the same name exists,
// it is updated with new data
await obstorClient.fPutObject(bucket, destinationObject, sourceFile, metaData)
console.log('File ' + sourceFile + ' uploaded as object ' + destinationObject + ' in bucket ' + bucket)

Run the File Uploader

node file-uploader.mjs
Bucket js-test-bucket created successfully in "us-east-1".
File /tmp/test-file.txt uploaded successfully as my-test-file.txt to bucket js-test-bucket

API Reference

The complete API Reference is available here:

• Obstor JavaScript API Reference

Bucket Operations

• makeBucket
• listBuckets
• bucketExists
• removeBucket
• listObjects
• listObjectsV2
• listObjectsV2WithMetadata (Extension)
• listIncompleteUploads
• getBucketVersioning
• setBucketVersioning
• setBucketLifecycle
• getBucketLifecycle
• removeBucketLifecycle
• getObjectLockConfig
• setObjectLockConfig

File Object Operations

• fPutObject
• fGetObject

Object Operations

• getObject
• putObject
• copyObject
• statObject
• removeObject
• removeObjects
• removeIncompleteUpload
• selectObjectContent

Presigned Operations

• presignedUrl
• presignedGetObject
• presignedPutObject
• presignedPostPolicy

Bucket Notification Operations

• getBucketNotification
• setBucketNotification
• removeAllBucketNotification
• listenBucketNotification (Obstor Extension)

Bucket Policy Operations

• getBucketPolicy
• setBucketPolicy

Examples

Bucket Operations

• list-buckets.mjs
• list-objects.js
• list-objects-v2.js
• list-objects-v2-with-metadata.js (Extension)
• bucket-exists.mjs
• make-bucket.mjs
• remove-bucket.mjs
• list-incomplete-uploads.js
• get-bucket-versioning.mjs
• set-bucket-versioning.mjs
• set-bucket-tagging.mjs
• get-bucket-tagging.mjs
• remove-bucket-tagging.mjs
• set-bucket-lifecycle.mjs
• get-bucket-lifecycle.mjs
• remove-bucket-lifecycle.mjs
• get-object-lock-config.mjs
• set-object-lock-config.mjs
• set-bucket-replication.mjs
• get-bucket-replication.mjs
• remove-bucket-replication.mjs
• set-bucket-encryption.mjs
• get-bucket-encryption.mjs
• remove-bucket-encryption.mjs

File Object Operations

• fput-object.mjs
• fget-object.mjs

Object Operations

• put-object.mjs
• get-object.mjs
• copy-object.mjs
• get-partialobject.mjs
• remove-object.js
• remove-incomplete-upload.js
• stat-object.mjs
• get-object-retention.mjs
• put-object-retention.mjs
• set-object-tagging.mjs
• get-object-tagging.mjs
• remove-object-tagging.mjs
• set-object-legal-hold.mjs
• get-object-legal-hold.mjs
• compose-object.mjs
• select-object-content.mjs

Presigned Operations

• presigned-getobject.mjs
• presigned-putobject.mjs
• presigned-postpolicy.mjs

Bucket Notification Operations

• get-bucket-notification.js
• set-bucket-notification.js
• remove-all-bucket-notification.js
• listen-bucket-notification.js (Obstor Extension)

Bucket Policy Operations

• get-bucket-policy.js
• set-bucket-policy.mjs

Custom Settings

• setAccelerateEndPoint

Explore Further

• Complete Documentation
• Obstor JavaScript Client SDK API Reference

Contribute

• Contributors Guide