Adding an S3 filesystem for Bolt

boltS3.php

<?php
use Aws\S3\S3Client;
use League\Flysystem\Filesystem;
use League\Flysystem\Adapter\AwsS3 as Adapter;

$client = S3Client::factory(array(
    'key'    => '[your key]',
    'secret' => '[your secret]',
    'region' => '[aws-region]'
));

$adapter = new Adapter($client, 'bucket-name', 'optional-prefix');
$filesystem = new Filesystem($adapter);

// Then with Bolt App
$app['filesystem']->mountFilesystem('s3fs', $filesystem);

You're completely right @romulo1984 and i propone the migration, but they don't accept to make it on summer cause of roadmap. This project will be plan on several month and meanwhile i have to enable managing filesystem with S3, no choice.

I am on php5.6, Bolt 2.05, and i tryed to create an extension as you propone above.
When you tested this way, did it work with the extension ?

I understand. My tests with that code there were in May 2017, so I really do not remember. But I believe it will not be so difficult. Just create this extension, register and see if everything is going as expected.