Keep track of managed objects in `.status.inventory`

[stefanprodan]

Similar to Flux Kustomization, the HelmRelease should expose the managed objects in .status.inventory. This would improve the observability of Flux as right now users need to query the Helm storage, extract the tar.gz from the Secret value and iterate over the objects to list them. One major pain point with Helm storage lookup is that the managed objects don't have the namespace set, CRDs are missing, etc. The helm-controller knows which objects it applies, so we can generate an accurate inventory.

[matheuscscp]

The Flux CLI and other tools that traverse the resource tree can also benefit, no more .tar.gz processing anywhere.

[stealthybox]

would this also track resources such as upgrade hooks and tests in the same inventory list?
Just noting this should specifically use the output of post-renderers.

[matheuscscp]

This would reflect the rendered manifests you can find by opening up the helm storage secret

[stefanprodan]

This would reflect the rendered manifests you can find by opening up the helm storage secret

CRDs are not in the secret, but since we manage them unlike Helm, they should be in the inventory.

would this also track resources such as upgrade hooks and tests in the same inventory list?

These resources are ephemeral, both jobs and pods get removed after hook/test runs, so tracking them in the inventory would be wrong. Tests are already tracked in .status.history.

[matheuscscp]

CRDs are not in the secret, but since we manage them unlike Helm, they should be in the inventory.

Yep, with addition of the CRDs

[nagygergo]

I know we have some integration charts that have a couple thousand resources in them. Would it make sense to limit or truncate this list? Or with the inventory keeping pattern, the CR storage limit would be enough to fit both this, and .status.history in?

[stefanprodan]

The Flux inventory is very compact as it records just the kind/namespace/name. We have Kustomizations managing 10K and the CR size is very small