Re: [che-dev] Add metadata.namespace to Devfile

[Thomas Mäder <tmader@xxxxxxxxxx>]

Hi Lukas,

On 06/11/2019 15:16, Lukas Krejci wrote:
> WDYT? Do you have some concerns about this idea?

Yes, I have some concerns: besides creating a "read-only" field in the 
devfile (which Mykola mentioned in his answer), I think it would violate 
containment: a devfile +/- creates a pod. A pod is container within a 
namespace. If we give the devfile control over things which live "up the 
hierarchy" from itself. What happens if the user does not have a 
namespace with the name the devfile requests?

A devfile should be reusable by multiple people across che installation. 
Since the namespaces depend on the configuration of the che instance, a 
devfile should not depend on a particular configuration. I think we 
should be wary of treating devfiles like stateful objects: devfiles are 
portable descriptions of workspaces, not the workspaces themselves. They 
are "constructors" if you will, not instances.

I am not familiar enough with our workspace engine to really pin this 
down, but I have a bad feeling about this. Maybe it helps if you explain 
the use cases we're trying to cover with this change.

/Thomas