fix: support OCI chart digest syntax in chart URLs and version fields
Helm supports pinning OCI chart images by digest (@sha256:...), version
tag (:version), or both (:version@sha256:digest) since helm/helm#12690.
Helmfile failed to parse these formats, incorrectly constructing helm
commands and losing version/digest information embedded in chart URLs.
Root causes:
- resolveOciChart() used last ":" to find version tag, but sha256:abc
contains ":", so digest URLs were split incorrectly
- getOCIQualifiedChartName() included :version and @digest in chartName
with no parsing of either source
- appendChartVersionFlags() passed release.Version verbatim to --version
flag, including any digest suffix
- ChartPull() discarded the tag from resolveOciChart but did not
preserve digest in the URL
This commit adds parseOCIChartRef() and parseVersionDigest() utilities,
then updates the OCI chart handling pipeline so that:
- Digests are preserved in the chart URL passed to helm pull
- Version tags are extracted cleanly for the --version flag
- Both chart URL and version field are parsed for version/digest info
Fixes#2097
Signed-off-by: Aditya Menon <amenon@canarytechnologies.com>
5c43fa6465