Add the ability to combine helm values from multiple sources in the argocd application when using the vault plugin.

[anieo]

Summary

argocd application should be able to take helm values from multiple sources and combine them together especially the plugin parameters with helm values.

Motivation

Currently, when using argocd-image-updater to update the docker image version, t creates a helm source that results in an error when using the argocd-vault-plugin. even when you don't use helm source. This limitation forces users to choose between using the write-back method or the vault plugin. By allowing the combination of helm values from multiple sources, users can benefit from both methods without facing any errors.

Proposal

the sidecar can replace the vault pointers from the plugin parameters first run the helm template command
helm can accept multiple values files that may override each other

You can specify the '--values'/'-f' flag multiple times. The priority will be given to the last (right-most) file specified.

you can give a way in the sidecar like a predefined variable that will always hold the helm_values, helm_files_1,helm_files_2,etc and the plugin_paramter that the user will define then the order form the sidecar definition.

i know that i am looking talking about the case of helm chart/repo. and i didn't conside the rest of the cases you need to consider with each change and that figuring out a solution that fits all is not easy.

Second Proposal

maybe this issue can be fixed from the image-updater side by integrating with plugins or giving the user a way to specify how to update the value.

Thank you very much

[crenshaw-dev]

#12508 will provide a mechanism to do this

[anieo]

Thanks closing