DropBox support

[hmeine]

It would be nice to see DropBox support as well.

[arekbulski]

Can you point to some open implemenation that allows access into Dropbox hosted files?

[hmeine]

We used this one: https://pypi.python.org/pypi/dropbox
Apparently, one would need to register a "pyfilesystem" application first, in order to get an API key.

[hmeine]

(With "we used", I meant in https://github.com/comic/comic-django, not with pyfilesystem yet.)

[travcunn]

Dropbox for pyfilesystem: https://github.com/smartfile/fs-dropbox

[hmeine]

Thanks, interesting. I thought that caching would make more sense as a wrapper (I see you already commented on issue #223 ), but maybe there are aspects to caching that suggest a closer integration into remote filesystems.

[travcunn]

A few months back, I built a caching wrapper for a remote filesystem. One method that was cached was exists(), which would be invalidated after 1 second. This way, if exists() is called a bunch within the same second, it doesn't ask the remote server again.

And what you cache also depends on what the remote filesystem can do.

[hmeine]

Exactly, and the remote fs might even provide some change notification / timestamping / bulk-stat() / similar API. But this is actually guessing, I have no real FS in mind.

[hmeine]

Will dropbox support be merged eventually, and this issue stays open until it is?

[arekbulski]

If that is developed outside of this project then close it.

[xmedeko]

I vote for merging the @travcunn project into PyFilesystem, or please update the doc to include links to the external FS implementations.

[jirikuncar]

We have tried to submit https://github.com/inveniosoftware-attic/invenio-ext/blob/master/invenio_ext/fs/cloudfs/dropboxfs.py to upstream years back.

[willmcgugan]

At some point I will collate these implementations on the website. Dropbox support is fantastic, but I'm trying to make PyFilesystem leaner in terms of dependancies.