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Replace _ with + when verifying the chart version matches the OCI artifact tag #1102

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baburciu
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Closes #1099

OCI tags are not semver compatible, with + character not allowed. Helm worked around this by converting + to _ before pushing to the OCI repo and vice versa when pulling from the repo.

This PR makes helm-controller adhere to that convention, by converting OCI artifact tag using _ to + replacement prior to any check or processing.

@baburciu baburciu force-pushed the accept-underscore-ocirepo-tag-hr branch 2 times, most recently from adcbcaf to b2db396 Compare October 31, 2024 16:23
@baburciu
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I'm not sure what should be best returned as error

return "", fmt.Errorf("failed parsing artifact revision %s", tagD[0])

or

return "", fmt.Errorf("failed parsing artifact revision %s", tagConverted)

but the conversion needs to happen prior to calling semver.NewVersion

@stefanprodan
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I think we should return the one with a + as that's the string we try to validate as semver.

PS. This PR needs a test using a tag that has _.

@baburciu baburciu marked this pull request as draft November 1, 2024 08:38
@baburciu baburciu force-pushed the accept-underscore-ocirepo-tag-hr branch from b2db396 to 08cb29c Compare November 1, 2024 12:20
@baburciu baburciu force-pushed the accept-underscore-ocirepo-tag-hr branch from 08cb29c to caf49d2 Compare November 1, 2024 12:42
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baburciu commented Nov 1, 2024

thank you, I've added a test for it, which is passing make test. I'm new to this, so if it's not that good, please inform

@baburciu baburciu marked this pull request as ready for review November 1, 2024 12:46
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LGTM

Thanks @baburciu 🥇

@stefanprodan stefanprodan added the area/oci OCI related issues and pull requests label Nov 1, 2024
@stefanprodan stefanprodan changed the title Replace _ with + for OCI artifacts tags when pulled for helm Replace _ with + when verifying the chart version matches the OCI artifact tag Nov 1, 2024
@stefanprodan stefanprodan merged commit 5beaf80 into fluxcd:main Nov 1, 2024
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OCI artifact semver alignment with Helm for tags with underscore
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