100 lines
2.4 KiB
Go
100 lines
2.4 KiB
Go
package vnfs
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import (
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"context"
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"fmt"
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"github.com/hpcng/warewulf/internal/pkg/config"
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"github.com/hpcng/warewulf/internal/pkg/oci"
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"github.com/hpcng/warewulf/internal/pkg/vnfs"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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"os"
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"path"
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)
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func BuildDocker(v vnfs.VnfsObject) {
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wwlog.Printf(wwlog.VERBOSE, "Building OCI Container: %s\n", v.Source())
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config := config.New()
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OciCacheDir := config.LocalStateDir + "/oci"
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VnfsHashDir := config.LocalStateDir + "/oci/vnfs"
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c, err := oci.NewCache(oci.OptSetCachePath(OciCacheDir))
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if err != nil {
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fmt.Printf("ERROR: %s\n", err)
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os.Exit(1)
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}
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wwlog.Printf(wwlog.VERBOSE, "Downloading OCI container layers\n")
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sourcePath, err := c.Pull(context.Background(), v.Source(), nil)
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if err != nil {
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fmt.Printf("ERROR: %s\n", err)
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os.Exit(1)
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}
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hashDestination := VnfsHashDir + path.Base(sourcePath)
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name, err := os.Readlink(config.VnfsImage(v.NameClean()))
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if err == nil {
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if name == hashDestination {
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wwlog.Printf(wwlog.INFO, "%-35s: Skipping, VNFS is current\n", v.Name())
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return
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}
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}
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err = os.MkdirAll(VnfsHashDir, 0755)
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if err != nil {
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fmt.Printf("ERROR: %s\n", err)
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return
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}
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err = os.MkdirAll(path.Dir(config.VnfsImage(v.NameClean())), 0755)
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if err != nil {
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fmt.Printf("ERROR: %s\n", err)
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return
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}
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err = os.MkdirAll(path.Dir(config.VnfsChroot(v.NameClean())), 0755)
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if err != nil {
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fmt.Printf("ERROR: %s\n", err)
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return
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}
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wwlog.Printf(wwlog.VERBOSE, "Building bootable VNFS image\n")
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err = buildVnfs(sourcePath, hashDestination)
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if err != nil {
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fmt.Printf("ERROR: %s\n", err)
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os.Exit(1)
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}
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wwlog.Printf(wwlog.VERBOSE, "Finalizing Build\n")
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// Setup links from OCI image to provision path
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_ = os.Remove(config.VnfsImage(v.NameClean()) + "-link")
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err = os.Symlink(hashDestination, config.VnfsImage(v.NameClean())+"-link")
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if err != nil {
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wwlog.Printf(wwlog.ERROR, "%s\n", err)
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os.Exit(1)
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}
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err = os.Rename(config.VnfsImage(v.NameClean())+"-link", config.VnfsImage(v.NameClean()))
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if err != nil {
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os.Exit(1)
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}
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// Setup links from OCI rootfs to chroot path
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_ = os.Remove(config.VnfsChroot(v.NameClean()) + "-link")
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err = os.Symlink(sourcePath, config.VnfsChroot(v.NameClean())+"-link")
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if err != nil {
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os.Exit(1)
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}
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err = os.Rename(config.VnfsChroot(v.NameClean())+"-link", config.VnfsChroot(v.NameClean()))
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if err != nil {
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os.Exit(1)
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}
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wwlog.Printf(wwlog.INFO, "%-35s: Done\n", v.Name())
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return
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}
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