Added csv import of nodes

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

@@ -1,6 +1,8 @@
 package imprt
 
 import (
+	"bytes"
+	"encoding/csv"
 	"fmt"
 	"io"
 	"os"
@@ -28,18 +30,68 @@ func CobraRunE(cmd *cobra.Command, args []string) error {
 		wwlog.Error("Could not read:%s\n", err)
 		os.Exit(1)
 	}
-	err = yaml.Unmarshal(buffer, importMap)
-	if err == nil {
-		yes := apiutil.ConfirmationPrompt(fmt.Sprintf("Are you sure you want to modify %d nodes", len(importMap)))
+	if !ImportCVS {
+		err = yaml.Unmarshal(buffer, importMap)
+		if err == nil {
+			yes := apiutil.ConfirmationPrompt(fmt.Sprintf("Are you sure you want to modify %d nodes", len(importMap)))
+			if yes {
+				err = apinode.NodeAddFromYaml(&wwapiv1.NodeYaml{NodeConfMapYaml: string(buffer)})
+				if err != nil {
+					wwlog.Error("Got following problem when writing back yaml: %s", err)
+					os.Exit(1)
+				}
+			}
+		} else {
+			wwlog.Error("Could not parse import file")
+		}
+	} else {
+		// reading from buffer is a bit overshot
+		csvReader := csv.NewReader(bytes.NewReader(buffer))
+		records, err := csvReader.ReadAll()
+		if err != nil {
+			wwlog.Error("Could not parse %s: %s\n", args[0], err)
+			os.Exit(1)
+		}
+		if len(records) < 1 || len(records[0]) < 1 {
+			wwlog.Error("Did not find any data in %s\n", args[0])
+			os.Exit(1)
+		}
+		if !(records[0][0] == "node" || records[0][0] == "nodename") {
+			Usage()
+			os.Exit(1)
+		}
+		argsLen := len(records[0])
+		for i, line := range records[1:] {
+			if len(line) != argsLen {
+				wwlog.Error("Wrong number of fields in lube %u\n", i+1)
+				os.Exit(1)
+			}
+			for j := range line {
+				if j == 0 {
+					continue
+				}
+				if importMap[line[0]] == nil {
+					importMap[line[0]] = new(node.NodeConf)
+				}
+				ok := importMap[line[0]].SetLopt(records[0][j], line[j])
+				if !(ok) {
+					wwlog.Debug("Could not import %s\n", line[j])
+				}
+			}
+		}
+		yes := apiutil.ConfirmationPrompt(fmt.Sprintf("Are you sure you want to import %d nodes", len(importMap)))
 		if yes {
+			// create second buffer an marshall nodeMap to it
+			buffer, err = yaml.Marshal(importMap)
+			if err != nil {
+				wwlog.Error("Got following problem when creating yaml: %s", err)
+			}
 			err = apinode.NodeAddFromYaml(&wwapiv1.NodeYaml{NodeConfMapYaml: string(buffer)})
 			if err != nil {
 				wwlog.Error("Got following problem when writing back yaml: %s", err)
 				os.Exit(1)
 			}
 		}
-	} else {
-		wwlog.Error("Could not parse import file")
 	}
 
 	return nil