Restored deleted kernel components for overrides

internal/app/wwctl/kernel/imprt/main.go

@@ -0,0 +1,92 @@
+package imprt
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/hpcng/warewulf/internal/pkg/container"
+	"github.com/hpcng/warewulf/internal/pkg/kernel"
+	"github.com/hpcng/warewulf/internal/pkg/node"
+	"github.com/hpcng/warewulf/internal/pkg/warewulfd"
+	"github.com/hpcng/warewulf/internal/pkg/wwlog"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+func CobraRunE(cmd *cobra.Command, args []string) error {
+	if len(args) == 0 && !OptDetect {
+		wwlog.Printf(wwlog.ERROR, "the '--detect' flag is needed, if no kernel version is suppiled")
+		os.Exit(1)
+	}
+	if OptDetect && (OptRoot == "" || OptContainer == "") {
+		wwlog.Printf(wwlog.ERROR, "the '--detect flag needs the '--container' or '--root' flag")
+		os.Exit(1)
+	}
+	// Checking if container flag was set, then overwriting OptRoot
+	if OptContainer != "" {
+		if container.ValidSource(OptContainer) {
+			OptRoot = container.RootFsDir(OptContainer)
+		} else {
+			wwlog.Printf(wwlog.ERROR, " %s is not a valid container", OptContainer)
+			os.Exit(1)
+		}
+	}
+
+	var kernelVersion string
+	var err error
+	if len(args) > 0 {
+		kernelVersion = args[0]
+	} else {
+		kernelVersion, err = kernel.FindKernelVersion(OptRoot)
+		if err != nil {
+			wwlog.Printf(wwlog.ERROR, "could not detect kernel under %s\n", OptRoot)
+			os.Exit(1)
+		}
+	}
+	kernelName := kernelVersion
+	if len(args) > 1 {
+		kernelName = args[1]
+	} else if OptDetect && (OptContainer != "") {
+		kernelName = OptContainer
+	}
+	output, err := kernel.Build(kernelVersion, kernelName, OptRoot)
+	if err != nil {
+		wwlog.Printf(wwlog.ERROR, "Failed building kernel: %s\n", err)
+		os.Exit(1)
+	} else {
+		fmt.Printf("%s: %s\n", kernelName, output)
+	}
+
+	if SetDefault {
+
+		nodeDB, err := node.New()
+		if err != nil {
+			wwlog.Printf(wwlog.ERROR, "Could not open node configuration: %s\n", err)
+			os.Exit(1)
+		}
+		//TODO: Don't loop through profiles, instead have a nodeDB function that goes directly to the map
+		profiles, _ := nodeDB.FindAllProfiles()
+		for _, profile := range profiles {
+			wwlog.Printf(wwlog.DEBUG, "Looking for profile default: %s\n", profile.Id.Get())
+			if profile.Id.Get() == "default" {
+				wwlog.Printf(wwlog.DEBUG, "Found profile default, setting kernel version to: %s\n", args[0])
+				profile.KernelVersion.Set(args[0])
+				err := nodeDB.ProfileUpdate(profile)
+				if err != nil {
+					return errors.Wrap(err, "failed to update node profile")
+				}
+			}
+		}
+		err = nodeDB.Persist()
+		if err != nil {
+			return errors.Wrap(err, "failed to persist nodedb")
+		}
+		fmt.Printf("Set default kernel version to: %s\n", args[0])
+		err = warewulfd.DaemonReload()
+		if err != nil {
+			return errors.Wrap(err, "failed to reload warewulf daemon")
+		}
+	}
+
+	return nil
+}