68 lines
2.0 KiB
Go
68 lines
2.0 KiB
Go
package container
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import (
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"fmt"
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"os"
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"os/exec"
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"path"
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"github.com/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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)
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func Build(name string, buildForce bool) error {
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rootfsPath := RootFsDir(name)
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imagePath := ImageFile(name)
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if !ValidSource(name) {
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return errors.New("Container does not exist")
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}
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if !buildForce {
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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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wwlog.Printf(wwlog.INFO, "Skipping (VNFS is current)\n")
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return 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 errors.New("Failed creating directory")
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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 errors.New("Failed creating directory")
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}
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compressor, err := exec.LookPath("pigz")
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if err != nil {
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wwlog.Printf(wwlog.VERBOSE, "Could not locate PIGZ, using GZIP\n")
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compressor = "gzip"
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} else {
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wwlog.Printf(wwlog.VERBOSE, "Using PIGZ to compress the container: %s\n", compressor)
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}
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var cmd string
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_, err = os.Stat(path.Join(rootfsPath, "./etc/warewulf/exclude"))
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if os.IsNotExist(err) {
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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 . -xdev -xautofs | cpio --quiet -o -H newc | %s -c > \"%s\"", rootfsPath, compressor, imagePath)
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} else {
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wwlog.Printf(wwlog.DEBUG, "Building VNFS image with excludes: '%s' -> '%s'\n", rootfsPath, imagePath)
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cmd = fmt.Sprintf("cd %s; find . -xdev -xautofs | grep -v -f ./etc/warewulf/exclude | cpio --quiet -o -H newc | %s -c > \"%s\"", rootfsPath, compressor, imagePath)
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}
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wwlog.Printf(wwlog.DEBUG, "RUNNING: %s\n", cmd)
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err = exec.Command("/bin/sh", "-c", cmd).Run()
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if err != nil {
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return errors.New("Failed building VNFS")
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}
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return nil
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}
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