feat: new apply functionality #446
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mfrancisc
requested review from
MatousJobanek,
alexeykazakov,
rajivnathan,
ranakan19 and
xcoulon
as code owners
… fashion so that we can use the kubectl functionality with streams.
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mfrancisc
commented
Jan 28, 2025
| return nil, err | ||
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| f := &replacedStdin{orig: os.Stdin} |
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why pointing os.File to os.Stdin ?
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| f := &replacedStdin{orig: os.Stdin} | ||
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| os.Stdin = stdinRead |
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again , I'm not sure I follow why we need this . Could we point stdinRead to *os.File directly ?
Also does this mean it's using a file for storing the data or it's using the stdin stream?
| os.Stdin = stdinRead | ||
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| if _, err = io.Copy(stdinWrite, data); err != nil { | ||
| os.Stdin = f.orig |
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why setting back os.Stdin to f only on error ?
| orig *os.File | ||
| } | ||
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| func pumpToStdin(data io.Reader) (*replacedStdin, error) { |
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could you please add a few comments explaining how the "trick" works ? I'm not 100% following all the swaps between the various variables ...
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THIS IS EXPERIMENTAL and the PR might be closed!
This is an attempt to leverage the kubectl apply package for applying objects on the clusters.
Unfortunately atm the package only supports applying from files and stdin, it doesn't support custom input.
See: kubernetes/kubectl#1670
wrt: KUBESAW-139