50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package container
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import (
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"fmt"
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"github.com/hpcng/warewulf/internal/pkg/errors"
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"github.com/hpcng/warewulf/internal/pkg/util"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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"os"
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"os/exec"
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"path"
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)
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func Build(name string, buildForce bool) (string, error) {
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rootfsPath := RootFsDir(name)
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imagePath := ImageFile(name)
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if ValidSource(name) == false {
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return "", errors.New("Container does not exist")
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}
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if buildForce == false {
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wwlog.Printf(wwlog.DEBUG, "Checking if there have been any updates to the VNFS directory\n")
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if util.PathIsNewer(rootfsPath, imagePath) {
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return "Skipping (VNFS is current)", nil
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}
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}
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wwlog.Printf(wwlog.DEBUG, "Making parent directory for: %s\n", name)
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err := os.MkdirAll(path.Dir(imagePath), 0755)
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if err != nil {
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return "Failed creating directory", err
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}
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wwlog.Printf(wwlog.DEBUG, "Making parent directory for: %s\n", rootfsPath)
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err = os.MkdirAll(path.Dir(rootfsPath), 0755)
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if err != nil {
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return "Failed creating directory", err
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}
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wwlog.Printf(wwlog.DEBUG, "Building VNFS image: '%s' -> '%s'\n", rootfsPath, imagePath)
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cmd := fmt.Sprintf("cd %s; find . | cpio --quiet -o -H newc | gzip -c > \"%s\"", rootfsPath, imagePath)
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err = exec.Command("/bin/sh", "-c", cmd).Run()
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if err != nil {
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return "Failed building VNFS", err
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}
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return "Done", nil
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}
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