Files
warewulf/internal/pkg/vnfs_old/docker.go

102 lines
2.5 KiB
Go

package vnfs
import (
"context"
"fmt"
"github.com/hpcng/warewulf/internal/pkg/config"
"github.com/hpcng/warewulf/internal/pkg/oci"
"github.com/hpcng/warewulf/internal/pkg/wwlog"
"os"
"path"
)
func BuildDocker(vnfs VnfsObject, buildForce bool) {
wwlog.Printf(wwlog.VERBOSE, "Building OCI Container: %s\n", vnfs.Source)
OciCacheDir := config.LocalStateDir + "/oci"
VnfsHashDir := config.LocalStateDir + "/oci/container"
c, err := oci.NewCache(oci.OptSetCachePath(OciCacheDir))
if err != nil {
fmt.Printf("ERROR: %s\n", err)
os.Exit(1)
}
wwlog.Printf(wwlog.VERBOSE, "Downloading OCI container layers\n")
sourcePath, err := c.Pull(context.Background(), vnfs.Source, nil)
if err != nil {
fmt.Printf("ERROR: %s\n", err)
os.Exit(1)
}
hashDestination := VnfsHashDir + path.Base(sourcePath)
name, err := os.Readlink(vnfs.Image)
if err == nil {
if name == hashDestination && buildForce == false {
wwlog.Printf(wwlog.INFO, "%-35s: Skipping, VNFS is current\n", vnfs.Name)
return
}
}
err = os.MkdirAll(VnfsHashDir, 0755)
if err != nil {
fmt.Printf("ERROR: %s\n", err)
return
}
wwlog.Printf(wwlog.DEBUG, "Making parent directory for: %s\n", vnfs.Image)
err = os.MkdirAll(path.Dir(vnfs.Image), 0755)
if err != nil {
fmt.Printf("ERROR: %s\n", err)
return
}
wwlog.Printf(wwlog.DEBUG, "Making parent directory for: %s\n", vnfs.Chroot)
err = os.MkdirAll(path.Dir(vnfs.Chroot), 0755)
if err != nil {
fmt.Printf("ERROR: %s\n", err)
return
}
wwlog.Printf(wwlog.VERBOSE, "Building bootable VNFS image\n")
err = buildVnfs(sourcePath, hashDestination)
if err != nil {
fmt.Printf("ERROR: %s\n", err)
os.Exit(1)
}
wwlog.Printf(wwlog.VERBOSE, "Finalizing Build\n")
// Setup links from OCI image to provision path
_ = os.Remove(vnfs.Image + "-link")
err = os.Symlink(hashDestination, vnfs.Image+"-link")
if err != nil {
wwlog.Printf(wwlog.ERROR, "Could not create symlink for Image: %s\n", err)
os.Exit(1)
}
err = os.Rename(vnfs.Image+"-link", vnfs.Image)
if err != nil {
wwlog.Printf(wwlog.ERROR, "Could not rename link: %s\n", err)
os.Exit(1)
}
// Setup links from OCI rootfs to chroot path
_ = os.Remove(vnfs.Chroot + "-link")
err = os.Symlink(sourcePath, vnfs.Chroot+"-link")
if err != nil {
wwlog.Printf(wwlog.ERROR, "Could not create symlink for Chroot: %s\n", err)
os.Exit(1)
}
err = os.Rename(vnfs.Chroot+"-link", vnfs.Chroot)
if err != nil {
wwlog.Printf(wwlog.ERROR, "Could not rename link: %s\n", err)
os.Exit(1)
}
wwlog.Printf(wwlog.INFO, "%-35s: Done\n", vnfs.Source)
return
}