Ability to parse/check Helm chart repository metadata

[eriweb]

I've been trying to get version data for Helm charts where there is no apparent git tag or release, this is pretty common for repositories that contain multiple Helm charts.
Example: https://github.com/bitnami/charts/tree/master/bitnami

I see a couple various ways of doing this.

1. All charts has a Chart.yaml that contains a version, example: https://github.com/bitnami/charts/blob/master/bitnami/apache/Chart.yaml

2. Most repositories, but not all, produce a repository manifest. Example: https://charts.bitnami.com/bitnami/index.yaml

[dvershinin]

I'm not sure about this.

With option 2, the "index file" of sorts for all helms available in the repository, you can query helm versions available by running helm ....

With option 1, how do you envision invoking lastversion ...

All in all, I don't understand what would be a useful use case :-)

[eriweb]

My use case is making a small tool to compare one version, for instance the currently installed, against available version. Preferably without having helm installed.

I've not looked at the lastversion cli all that much, but rather using it as a module I envision using it as lastversion.latest('https://github.com/bitnami/charts/blob/master/bitnami/apache/Chart.yaml')

No problem if this is outside of lastversion usage/scope, I'll always find another way. We use lastversion for some charts that rely on git tagging and would prefer to use one module/method for all charts :-)

lastversion.latest('https://github.com/codecentric/helm-charts/tree/master/charts/keycloak') is an example that works since they use tags

[dvershinin]

@terbolous can you check if it behaves as desired, from the master commit of lastversion.

With invocation like lastversion.latest('https://github.com/bitnami/charts/blob/master/bitnami/apache') (on a repository without tags), there's no telling that there's Chart.yaml without trying checking for its existence, which we better avoid.

So for such URLs, you'll have to explicitly specify the type via lastversion.latest('https://github.com/bitnami/charts/blob/master/bitnami/apache', at='helm_chart').

For URLs with Chart.yaml, specifying at is not needed.

[eriweb]

LGTM, thanks :)

[dvershinin]

Released in v1.3.5.