Support Multiple Sources as per ArgoCD v2.6.0 New Field

[similark]

Is your feature request related to a problem? Please describe.
ArgoCD v2.6.0-rc1 introduced a new field called sources, which overrides the source field of the application resource. When setting image-updater on such application, we get:
level=warning msg="skipping app 'myapp-staging' of type '' because it's not of supported source type" application=myapp-staging
which indicates that image-updater does not recognize this application as of valid source type.
Describe the solution you'd like
Seems like a minor update could make image-updater aware of this new sources field and apply some logic accordingly

Describe alternatives you've considered
Couldn't find any

Additional context
None

[cregev]

@jannfis @iamnoah ... we want to contribute to ArgoCD Multiple sources is there anything we can do?

[bentastic27]

@cregev this is partially due to using an old version of the argo-cd/v2 module.

https://github.com/argoproj-labs/argocd-image-updater/blob/master/go.mod#L7

I tried upping it to 2.6.7 for current and that required some other module changes which looks to have broken other code. I'm a nub at Go, otherwise I'd be taking a closer look at this.

[Tronix117]

Is this project dead ?
This is a pretty big incompatibility, that is still running for monthes now.

I tried duplicating the first element of sources to source (ignored by argocd 2.6+), but argocd-image-updater still does not pick it.

[jannfis]

This project is not dead, just hibernating a little at the moment.

The multiple sources feature in Argo CD is in beta-status, and I suppose if you do not use multiple sources in Argo CD, there will be no incompatibility?

[Tronix117]

You're right, I didn't see it was a beta feature.
In my case, I need to be able to use helm values from the git repo through the use of multiple sources (I don't think it makes a lot of sense that by default values path will be looked for relative to the chart itself, but I may be wrong on that).