add export and import function

cmd/export.go

@@ -5,7 +5,12 @@ Copyright © 2023 Laura Kalb <dev@lauka.net>
 package cmd
 
 import (
+	"encoding/json"
 	"fmt"
+	"net/netip"
+	"os"
+	"path"
+	"time"
 
 	"github.com/spf13/cobra"
 )
@@ -15,23 +20,77 @@ var exportCmd = &cobra.Command{
 	Use:   "export",
 	Short: "Export current ipam configuration (not implemented)",
 	Long: `Export current ipam contents to importable data format.
-    
-    Not implemented yet.`,
+You can either export a single subnet or all subnets.`,
+	Example: "ipam export\nipam export 192.168.0.0/24",
+	Args:    cobra.RangeArgs(0, 1),
+	Aliases: []string{"ex"},
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("Not implemented")
+		var jsonoutput []Subnet
+		if len(args) == 1 {
+			prefix, parseerr := netip.ParsePrefix(args[0])
+			if parseerr != nil {
+				fmt.Println("[ERROR]", parseerr)
+				os.Exit(1)
+			}
+
+			subnet, geterr := GetSubnet(prefix)
+			if geterr != nil {
+				fmt.Println("[ERROR]", geterr)
+				os.Exit(1)
+			}
+			jsonoutput = append(jsonoutput, subnet)
+		} else {
+			subnetlist := ListSubnets()
+			for _, net := range subnetlist {
+				prefix, parseerr := netip.ParsePrefix(net)
+				if parseerr != nil {
+					fmt.Println("[ERROR]", parseerr)
+					os.Exit(1)
+				}
+				subnet, geterr := GetSubnet(prefix)
+				if geterr != nil {
+					fmt.Println("[ERROR]", geterr)
+					os.Exit(1)
+				}
+				jsonoutput = append(jsonoutput, subnet)
+			}
+		}
+
+		//workingdir, _ := os.Getwd()
+		//timestamp := time.Now().Format("2006-01-02_15-04")
+		//exportfilename := workingdir + "/ipam_export_" + timestamp + ".json"
+
+		var exportname string
+
+		flagpath, _ := cmd.Flags().GetString("file")
+		if path.IsAbs(flagpath) {
+			exportname = flagpath
+		} else {
+			wd, _ := os.Getwd()
+			exportname = path.Join(wd, flagpath)
+		}
+
+		data, _ := json.MarshalIndent(jsonoutput, "", "  ")
+
+		file, fileerr := os.Create(exportname)
+		if fileerr != nil {
+			fmt.Println("[ERROR]", fileerr)
+			os.Exit(1)
+		}
+		defer file.Close()
+
+		_, writeerr := file.Write(data)
+		if writeerr != nil {
+			fmt.Println("[ERROR]", writeerr)
+			os.Exit(1)
+		}
+		fmt.Printf("[INFO] Data was exported to file %v\n", exportname)
 	},
 }
 
 func init() {
 	rootCmd.AddCommand(exportCmd)
 
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// exportCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// exportCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	timestamp := time.Now().Format("2006-01-02_15-04")
+	exportCmd.Flags().StringP("file", "f", "./ipam_export_"+timestamp+".json", "File name for exported data.\nCan be both absolute or relative path.")
 }

cmd/import.go

@@ -5,33 +5,72 @@ Copyright © 2023 Laura Kalb <dev@lauka.net>
 package cmd
 
 import (
+	"encoding/json"
 	"fmt"
+	"os"
+	"path"
+	"time"
 
 	"github.com/spf13/cobra"
 )
 
-// importCmd represents the import command
 var importCmd = &cobra.Command{
-	Use:   "import",
-	Short: "Import ipam configuration (not implemented)",
-	Long: `Import ips and subnets to ipam.
-    
-    Not implemented yet.`,
+	Use:     "import",
+	Short:   "Import ipam configuration (not implemented)",
+	Long:    `Import subnets to ipam.`,
+	Example: "ipam import --file import.json",
+	Args:    cobra.NoArgs,
+	Aliases: []string{"im"},
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("Not implemented")
+		var importname string
+		var subnets []Subnet
+
+		flagpath, _ := cmd.Flags().GetString("file")
+		if path.IsAbs(flagpath) {
+			importname = flagpath
+		} else {
+			wd, _ := os.Getwd()
+			importname = path.Join(wd, flagpath)
+		}
+
+		file, readerr := os.ReadFile(importname)
+		if readerr != nil {
+			fmt.Printf("[ERROR] Can't read file %v\n", importname)
+			fmt.Println(readerr)
+		}
+
+		marsherr := json.Unmarshal(file, &subnets)
+		if marsherr != nil {
+			fmt.Printf("[ERROR] Invalid format for file %v\n", importname)
+			fmt.Println(marsherr)
+		}
+
+		for _, subnet := range subnets {
+			fmt.Printf("[INFO] Start import of %v\n", subnet.Subnet.String())
+			subnet.ChangedBy = "ipam import"
+			subnet.ChangedAt = time.Now()
+
+			for _, addr := range subnet.Addresses {
+				addr.ChangedBy = "ipam import"
+				addr.ChangedAt = time.Now()
+				if addr.FQDN != "" {
+					AddDNSFqdn(addr.FQDN, addr.IP)
+				}
+			}
+
+			suberr := subnet.WriteSubnet()
+			if suberr != nil {
+				fmt.Printf("[ERROR] Can't write subnet to file %v\n", subnet.Subnet.String())
+				fmt.Println(suberr)
+			}
+			fmt.Printf("[INFO] Imported subnet %v successfully\n", subnet.Subnet.String())
+
+		}
 	},
 }
 
 func init() {
 	rootCmd.AddCommand(importCmd)
 
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// importCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// importCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	importCmd.Flags().StringP("file", "f", "import.json", "File to use for import operation")
 }