S3Storage Dart

This is the unofficial S3 (AWS, MinIO) Dart Client SDK that provides simple APIs to access any Amazon S3 compatible object storage server.

API

Bucket operations	Object operations	Presigned operations	Bucket Policy & Notification operations
makeBucket	getObject	presignedUrl	getBucketNotification
listBuckets	getPartialObject	presignedGetObject	setBucketNotification
bucketExists	fGetObject	presignedPutObject	removeAllBucketNotification
removeBucket	putObject	presignedPostPolicy	listenBucketNotification
listObjects	fPutObject		getBucketPolicy
listObjectsV2	copyObject		setBucketPolicy
listIncompleteUploads	statObject
listAllObjects	removeObject
listAllObjectsV2	removeObjects
	removeIncompleteUpload

Usage

Initialize MinIO Client

MinIO

final s3_storage = S3Storage(
  endPoint: 'play.min.io',
  accessKey: 'Q3AM3UQ867SPQQA43P2F',
  secretKey: 'zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG',
);

AWS S3

final s3_storage = S3Storage(
  endPoint: 's3.amazonaws.com',
  accessKey: 'YOUR-ACCESSKEYID',
  secretKey: 'YOUR-SECRETACCESSKEY',
);

Filebase

final s3_storage = S3Storage(
  endPoint: 's3.filebase.com',
  accessKey: 'YOUR-ACCESSKEYID',
  secretKey: 'YOUR-SECRETACCESSKEY',
  useSSL: true,
);

File upload

import 'package:s3_storage/io.dart';
import 'package:s3_storage/s3_storage.dart';

void main() async {
  final s3_storage = S3Storage(
    endPoint: 'play.min.io',
    accessKey: 'Q3AM3UQ867SPQQA43P2F',
    secretKey: 'zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG',
  );

  await s3_storage.fPutObject('mybucket', 'myobject', 'path/to/file');
}

For complete example, see: example

To use fPutObject() and fGetObject, you have to import 'package:s3_storage/io.dart';

Upload with progress

import 'package:s3_storage/s3_storage.dart';

void main() async {
  final s3_storage = S3Storage(
    endPoint: 'play.min.io',
    accessKey: 'Q3AM3UQ867SPQQA43P2F',
    secretKey: 'zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG',
  );

  await s3_storage.putObject(
    'mybucket',
    'myobject',
    Stream<Uint8List>.value(Uint8List(1024)),
    onProgress: (bytes) => print('$bytes uploaded'),
  );
}

Get object

import 'dart:io';
import 'package:s3_storage/s3_storage.dart';

void main() async {
  final s3_storage = S3Storage(
    endPoint: 's3.amazonaws.com',
    accessKey: 'YOUR-ACCESSKEYID',
    secretKey: 'YOUR-SECRETACCESSKEY',
  );

  final stream = await s3_storage.getObject('BUCKET-NAME', 'OBJECT-NAME');

  // Get object length
  print(stream.contentLength);

  // Write object data stream to file
  await stream.pipe(File('output.txt').openWrite());
}

Features and bugs

Please file feature requests and bugs at the issue tracker.

Contributions to this repository are welcome.

License

MIT