Support Retrieving installed Charts about go-helm-client

[elenz97]

Hey @masus04!

Thanks for opening this issue.

Is there currently a way to retrieve information about installed charts using the public interface?

As of now, information about installed charts is retrieved implicitly.
For example when calling InstallOrUpgradeChart(), chartIsInstalled() is called to determine existence of a helm release.

If not, is it possible to extend it to support those use cases?

I suppose you are looking for the functionality of helm list in this client? Please let us know.

As go-helm-client does not yet utilize the list action, I think it would be a good extension overall.

[masus04]

Thank your for your reply @elenz97

I am using the helm client as part of an Open Service Broker and would like to read installed charts explicitly in order to perform the following actions:

• Check if a perticular resource is already installed (probably using an 'helm list' equivalent, or simply chartIsInstalled(), but publicly available)
• Display information about an installed chart (similar to 'helm get values')
• Generate an updated chart from updated data provided by the user and already available data from the currently installed chart and upgrade.

The most important of these the first one, where I would really only need chartIsInstalled() to be public.