Flysystem - Symfony integration achievements

By Titouan Galopin (@tgalopin)

In January 2018, I stumbled upon a problem with autowiring: how can one easily and efficiently autowire different implementations of the same interface? In my specific case, the problem was linked to the Flysystem library, in which having multiple different filesystems can happen often.

This problem lead to a vast conversation throughout 2018 with Nicolas Grekas and ultimately was the reason to introduce an idea of “semantics” using the param annotation (#27172).

However, this implementation had many issues and was not well suited to solve the problem. It was later closed when the introduction of named aliases solved the problem much more elegantly (#28234). This feature was released in Symfony 4.2, in November 2018, and the hackathon was even the occasion for Grégoire Paris to write its documentation (#11339).

Now that named aliases are available, a much better integration with Flysystem could be achieved. This is one of the things I worked on during this hackathon: creating this integration, as an official Symfony bundle for Flysystem.

You can learn more details about this integration in the dedicated blog post: https://titouangalopin.com/introducing-the-official-flysystem-bundle/.