Expose a function from sigs.k8s.io/yaml that allows for strict unmarshaling to distinguish between strict and nonstrict errors.

[kevindelgado]

Currently, the kjson library exposes an UnmarshalStrict function that returns strict errors and nonstrict errors separately (strict errors are those relating to unknown fields that are only erroneous when strict unmarshaling is desired and still allow marshaling to occur, while nonstrict errors are any other errors that are always fatal to the marshaling).

We want to expose a similar function from kyaml (sigs.k8s.io/yaml) so that the strict unmarshaling that occurs higher up in the stack does not need to unmarshaling does not need to be performed twice.

For example in the applyPatcher of the patch handler, when we want to perform a strict unmarshal, we first do a regular Unmarshal, confirm that there are no errors, and then perform a second StrictUnmarshal to check for any additional errors that must be strict errors.

A better approach is to just do a single UnmarshalStrict and check the non-strict errors to return fatally (if non-nil) like how we do for kjson.

[kevindelgado]

cc @liggitt

[liggitt]

For full parity with the strict json parser, we'd need:

• full field paths to duplicate fields encountered
• avoid changing decoding behavior when encountering duplicate fields and return the same decoded content as if non-strict decoding was performed

[k8s-triage-robot]

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/lifecycle stale

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/lifecycle rotten

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/close

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue.

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/close

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[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

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The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

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/close not-planned

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