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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| package util | ||
|
|
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| import ( | ||
| "github.com/pkg/errors" | ||
| "os" | ||
| "path/filepath" | ||
| ) | ||
|
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| // DiscoverKubefile tries to find a Kubefile within the provided `path`. | ||
| func DiscoverKubefile(path string) (foundFile string, err error) { | ||
| // Test for existence of the file | ||
| target, err := os.Stat(path) | ||
| if err != nil { | ||
| return "", errors.Wrap(err, "discovering Kubefile") | ||
| } | ||
|
|
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| switch mode := target.Mode(); { | ||
| case mode.IsDir(): | ||
| // If the path is a real directory, we assume a Kubefile within it | ||
| kubefile := filepath.Join(path, "Kubefile") | ||
|
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| // Test for existence of the Kubefile file | ||
| file, err := os.Stat(kubefile) | ||
| if err != nil { | ||
| return "", errors.Wrap(err, "cannot find Kubefile in context directory") | ||
| } | ||
|
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| // The file exists, now verify the correct mode | ||
| if mode := file.Mode(); mode.IsRegular() { | ||
| foundFile = kubefile | ||
| } else { | ||
| return "", errors.Errorf("assumed Kubefile %q is not a file", kubefile) | ||
| } | ||
|
|
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| case mode.IsRegular(): | ||
| // If the context dir is a file, we assume this as Kubefile | ||
| foundFile = path | ||
| } | ||
|
|
||
| return foundFile, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| # implementation of sealer build | ||
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| ## Abstract | ||
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| Generally, the image generated from sealer build has no differences with container images. The image is compatible with OCI. Let's call it cluster image. | ||
| Sealer has some special operations based on the usual build of container images. Like (1) Adding a layer for storing containers | ||
| images automatically; (2) Saving cluster image information to the annotations from manifest of OCI v1 images. Sealer doesn't implement | ||
| the concrete building procedure. Sealer implements build over mature tools (we choose `buildah` currently). We will have an introduction for how the | ||
| sealer build implements next. | ||
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| ## Implement | ||
|
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| ### Adaptor | ||
|
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| ### Store Container Images |
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