How to use a custom regex manager to update an URL that contains the version number twice?

[kastl-ars]

How are you running Renovate?

Self-hosted Renovate CLI

Which platform you running Renovate on?

Forgejo

Which version of Renovate are you using?

No response

Please tell us more about your question or problem

Dear all,

using a regex manager it is rather simple to update a version number in a kustomization.yaml.
But how would I need to write the regex if the version number appears twice in the URL?

My current example is kpack:

resources:
  # renovate datasource=github-tags depName=buildpacks-community/kpack
  - https://github.com/buildpacks-community/kpack/releases/download/v0.17.0/release-0.17.0.yaml

As you can see, the version number is appearing twice, in the "path" and in the file name.

For a non-versioned release.yaml this regex works:

      "managerFilePatterns": [
        "/.*\\/kustomization\\.yaml/"
      ],
      "matchStrings": [
        "\\srenovate\\sdatasource=(?<datasource>\\S+)\\sdepName=(?<depName>\\S+)\\s+-\\s\\S+\\/download\\/(?<currentValue>\\S+)\\/release\\.yaml\\s+#"
      ]
    },

Using the (?<currentValue>\\S+) snippet again leads to an error in the renovate-config-validator (as there can be only one capture group). But how to specify that the new version should be updated twice?

Do I need to add a autoReplaceStringTemplate using {{{newValue}}} twice?

Kind Regards,
Johannes

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[RahulGautamSingh]

You don't capture the version twice — Renovate only allows one currentValue group. Capture it once, then use autoReplaceStringTemplate to rewrite the whole matched block with {{{newValue}}} in both places. Since the path has a v prefix but the filename doesn't, strip it with the replace helper:

{
  "customManagers": [
    {
      "customType": "regex",
      "managerFilePatterns": ["/.*\\/kustomization\\.yaml/"],
      "matchStrings": [
        "renovate datasource=(?<datasource>\\S+) depName=(?<depName>\\S+)\\s+- \\S+/download/(?<currentValue>\\S+)/release-\\S+\\.yaml"
      ],
      "autoReplaceStringTemplate": "renovate datasource={{{datasource}}} depName={{{depName}}}\n  - https://github.com/{{{depName}}}/releases/download/{{{newValue}}}/release-{{{ replace \"^v\" \"\" newValue }}}.yaml"
    }
  ]
}

autoReplaceStringTemplate replaces the entire matched string, so both {{{newValue}}} occurrences get updated in one go. The replace "^v" "" newValue drops the leading v for the filename.

[kastl-ars]

Thanks for the detailed answer, so my guess was right. I'll give this a try!