isle/go/cmd/entrypoint/bootstrap_util.go

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package main
import (
"errors"
"fmt"
"io/fs"
"isle/bootstrap"
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"os"
"path/filepath"
)
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func loadHostBootstrap() (bootstrap.Bootstrap, error) {
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stateDirPath := bootstrap.StateDirPath(envStateDirPath)
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hostBootstrap, err := bootstrap.FromFile(stateDirPath)
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if errors.Is(err, fs.ErrNotExist) {
return bootstrap.Bootstrap{}, fmt.Errorf(
"%q not found, has the daemon ever been run?",
stateDirPath,
)
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} else if err != nil {
return bootstrap.Bootstrap{}, fmt.Errorf("loading %q: %w", stateDirPath, err)
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}
return hostBootstrap, nil
}
func writeBootstrapToStateDir(hostBootstrap bootstrap.Bootstrap) error {
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path := bootstrap.StateDirPath(envStateDirPath)
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dirPath := filepath.Dir(path)
if err := os.MkdirAll(dirPath, 0700); err != nil {
return fmt.Errorf("creating directory %q: %w", dirPath, err)
}
f, err := os.Create(path)
if err != nil {
return fmt.Errorf("creating file %q: %w", path, err)
}
defer f.Close()
return hostBootstrap.WriteTo(f)
}