Filter based on annotations

[mattfarina]

We need a method to filter the available charts based on annotations. This is useful to rancher so that rancher can have one repository and different versions of charts that work with different versions of rancher.

There are a few ways we could go about this. When this ticket is taken there can be further discussion.

1. An annotation whose value is a semver. Note, this would not be tied to the hypper version but a version that could be passed into hypper
2. The go API providing a method to filter repositories based on metadata in charts
3. Some combination of the two that provides a means to do advanced filtering via the cli (semver aware) but not specific to rancher

We want to make this feature something in the API (like a filtering callback function) and possibly something exposed to the CLI that rancher can use but it's not rancher specific.

[Itxaka]

blocked by #113

[mattfarina]

@Itxaka how does search block this? Can search accept the same information and use that as part of its filtering? I realize this would deviate from upstream Helm.

[Itxaka]

@Itxaka how does search block this? Can search accept the same information and use that as part of its filtering? I realize this would deviate from upstream Helm.

Well, this build on top of the search command and as long as we dont have the search implemented on hypper we cannot implement this.

So more like adding the search command to hypper is blocking this :D

[Itxaka]

@mattfarina I just noticed that I didnt had you on the PR that tackled this, so probably you only saw my comment in this issue, sorry about that :D

[mattfarina]

#114 Implements part of it.

Still needed is the ability to handle version ranges and an API based method

[viccuad]

@mattfarina I'm having trouble parsing point 1 from the card. Is it correct, that the intent is to have an API method to filter charts based on a semver parameter? And preferably do that with an API method that accepts filters as callback functions.