imageio has permission problems as WSGI user on Amazon Web Server

[amalgamatedclyde]

everything was running great but imageio killed me! (not that i am ungrateful for your excellent module!!!)

[Zulko]

Ok. I'm calling @almarklein into the discussion. Can you give more details about what you do, when the error occurs, and what it says, so that we can find a solution ?

In the meantime the best would be not to use imageio: if you write GIFs, ask for program="ImageMagick". For the ffmpeg, replace 'ffmpeg-imageio' by 'auto-detect' in config_defaults.py prior to install. This way everything should work as before. Tell me if it works for you. If you still meet problems we will find a way to silence imageio with a try/except block.

[amalgamatedclyde]

i can send you my AWS logs. the error occurs at the time when my app imports moviepy modules. it's running Amazon Linux and ImageMagick is installed. i don't need imageio, so i can fall back to the earlier moviepy version, but i have been running a stable configuration on AWS for weeks until the recent commits, so i wanted to mention this.

[Zulko]

Ok, so it seems that we will need a try/except block. However I really need the error returned by Python so that I can safely filter it out. It should be something like "OSError: blablabla" or SystemError or something like that. Yeah maybe the AWS logs will contain that, can you paste them on Gist maybe ?

[amalgamatedclyde]

here:
https://gist.github.com/amaglamatedclyde/8a7e414af20ce3d18cd2

[Zulko]

The relevant line is : OSError: [Errno 2] No such file or directory: '/home/wsgi/.imageio'
Looks like something we could fix. I'll leave it to @almarklein for suggestions. Thanks for the report !

[amalgamatedclyde]

my pleasure!

[amalgamatedclyde]

i should look at the code. it's just os.makedir trying to operate where the web user doesn't have permission. the rest of our file operations are working, like VideoFileClip.save()

[almarklein]

Thanks for the report and for bringing me in. Interesting use-case; I never considered that writing in the home dir would be prohibited. Is there another place where we could download necessary resources to, or is the only time we can download/install stuff at installation time?

Previously, were you using the system-level version of ffmpeg?

[amalgamatedclyde]

i'm using a pre-compiled binary of ffmpeg because i am running on Amazon Elastic Beanstalk. servers are created on-the-fly as traffic increases. the web user can only write to the location where the finished video files are stored. in theory i could give this user write permission for /home, but Amazon EC2 doesn't build the installation that way so there could be a good reasonclyde

-------- Original Message --------
Subject: Re: [moviepy] imageio has permission problems as WSGI user on
Amazon Web Server (#106)
From: Almar Klein [email protected]
Date: Tue, December 16, 2014 3:22 am
To: Zulko/moviepy [email protected]
Cc: amaglamatedclyde [email protected]

Thanks for the report and for bringing me in. Interesting use-case; I never considered that writing in the home dir would be prohibited. Is there another place where we could download necessary resources to, or is the only time we can download/install stuff at installation time? Previously, were you using the system-level version of ffmpeg? —Reply to this email directly or view it on GitHub.

[almarklein]

Thanks. And the pre-compiled ffmpeg library, is it on PATH?

[almarklein]

I fixed this by resorting to /var/tmp when ~/ is not possible. I plan to release a new version next week.

[amalgamatedclyde]

excellent!

-------- Original Message --------
Subject: Re: [moviepy] imageio has permission problems as WSGI user on
Amazon Web Server (#106)
From: Almar Klein [email protected]
Date: Fri, January 30, 2015 7:29 am
To: Zulko/moviepy [email protected]
Cc: amaglamatedclyde [email protected]

I fixed this by resorting to /var/tmp when ~/ is not possible. I plan to release a new version next week. —Reply to this email directly or view it on GitHub.

[keikoro]

Looks like this was solved on imageio's side. Closing.