Cannot set/unset maximum and minimum preview dimensions

[kiranparajuli589]

Describe the bug

File previews in oc10 can be turned on/off by updating the system config variables. Preview dimension maximums and minimums can also be updated by updating the system config.

But the same provision is not available in ocis server. Previously previews and preview dimensions can be switched using environment variables. This way, we cannot update those environment variables during the test run without restarting the server. There should be a mechanism to handle file previews in ocis like in oc10

OCIS_VERSION=latest
BRANCH=master
STORAGE_FRONTEND_UPLOAD_DISABLE_TUS=false

[phil-davis]

In oC10 you cam make a lot of settings changes that take immediate effect - the next incoming request uses the new settings (for example, from config.php or the system and app settings that can be seen with occ config:list) That happens because each request is effectively processed by a "new" Apache/PHP "processor" that gets those settings on-the-fly each time.

For OCIS, the architecture has been designed to optimize that stuff more - system-wide settings are effectively "read at startup". It is not expected that system-wide settings are changed often in real production. And that is a reasonable expectation. If system settings are changed then OCIS needs to be "restarted" in some way. Admin of OCIS installations already need to be aware of this.

I suspect that we will need to design the test suites around this. For example, a drone pipeline can set various system-wide settings, start OCIS, and then run a suite of tests with those settings. Other pipelines can run with different settings. That does mean that we can't specify system-wide settings in the Background/Given steps of individual Features/Scenarios. It needs a bit of thinking about how to do it best.

Comments/thoughts welcome!

[kiranparajuli589]

Related issue: #192

[micbar]

fixed.

THUMBNAILS_MAX_INPUT_WIDTH	int	7680	The maximum width of an input image which is being processed.
THUMBNAILS_MAX_INPUT_HEIGHT	int	4320	The maximum height of an input image which is being processed.
THUMBNAILS_MAX_INPUT_IMAGE_FILE_SIZE	string	50MB	The maximum file size of an input image which is being processed. Usable common abbreviations: [KB, KiB, MB, MiB, GB, GiB, TB, TiB, PB, PiB, EB, EiB], example: 2GB.