dev: Add ttnv3 command

cmd/application.go

@@ -36,6 +36,6 @@ var applicationsCmd = &cobra.Command{
 }
 
 func init() {
-	applicationsCmd.Flags().AddFlagSet(source.FlagSet())
-	rootCmd.AddCommand(applicationsCmd)
+	applicationsCmd.Flags().AddFlagSet(source.AllFlagSets())
+	RootCmd.AddCommand(applicationsCmd)
 }

cmd/devices.go

@@ -34,6 +34,6 @@ var devicesCmd = &cobra.Command{
 }
 
 func init() {
-	devicesCmd.Flags().AddFlagSet(source.FlagSet())
-	rootCmd.AddCommand(devicesCmd)
+	devicesCmd.Flags().AddFlagSet(source.AllFlagSets())
+	RootCmd.AddCommand(devicesCmd)
 }

cmd/root.go

@@ -29,7 +29,7 @@ var (
 	ctx       context.Context
 	rootCfg   = &source.RootConfig
 	ExportCfg = ExportConfig{}
-	rootCmd   = &cobra.Command{
+	RootCmd   = &cobra.Command{
 		Use:   "ttn-lw-migrate",
 		Short: "Migrate from other LoRaWAN network servers to The Things Stack",
 
@@ -60,23 +60,23 @@ var (
 
 // Execute runs the root command and returns the exit code.
 func Execute() int {
-	if err := rootCmd.Execute(); err != nil {
+	if err := RootCmd.Execute(); err != nil {
 		printStack(os.Stderr, err)
 		return 1
 	}
 	return 0
 }
 
 func init() {
-	rootCmd.PersistentFlags().BoolVar(&rootCfg.DryRun,
+	RootCmd.PersistentFlags().BoolVar(&rootCfg.DryRun,
 		"dry-run",
 		false,
 		"Do everything except resetting root and session keys of exported devices")
-	rootCmd.PersistentFlags().BoolVar(&rootCfg.Verbose,
+	RootCmd.PersistentFlags().BoolVar(&rootCfg.Verbose,
 		"verbose",
 		false,
 		"Verbose output")
-	rootCmd.PersistentFlags().StringVar(&rootCfg.FrequencyPlansURL,
+	RootCmd.PersistentFlags().StringVar(&rootCfg.FrequencyPlansURL,
 		"frequency-plans-url",
 		"https://raw.githubusercontent.com/TheThingsNetwork/lorawan-frequency-plans/master",
 		"URL for fetching frequency plans")

cmd/sources.go

@@ -34,5 +34,5 @@ var sourcesCmd = &cobra.Command{
 }
 
 func init() {
-	rootCmd.AddCommand(sourcesCmd)
+	RootCmd.AddCommand(sourcesCmd)
 }

cmd/ttn-lw-migrate/main.go

@@ -22,6 +22,7 @@ import (
 	_ "go.thethings.network/lorawan-stack-migrate/pkg/source/ttnv3"      // TTS source
 
 	"go.thethings.network/lorawan-stack-migrate/cmd"
+	_ "go.thethings.network/lorawan-stack-migrate/cmd/ttnv3"
 )
 
 func main() {

cmd/ttnv3/application.go

@@ -0,0 +1,43 @@
+// Copyright © 2023 The Things Network Foundation, The Things Industries B.V.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ttnv3
+
+import (
+	"github.com/spf13/cobra"
+	root "go.thethings.network/lorawan-stack-migrate/cmd"
+	"go.thethings.network/lorawan-stack-migrate/pkg/commands"
+	"go.thethings.network/lorawan-stack-migrate/pkg/source"
+)
+
+var applicationsCmd = &cobra.Command{
+	Use:     "application [app-id] ...",
+	Aliases: []string{"applications", "app"},
+	Short:   "Export all devices of an application",
+	Run: func(cmd *cobra.Command, args []string) {
+		commands.Export(cmd, args, func(s source.Source, item string) error {
+			return s.RangeDevices(item, root.ExportCfg.ExportDev)
+		})
+	},
+}
+
+func init() {
+	ttnv3Cmd.AddCommand(applicationsCmd)
+
+	fs, err := source.FlagSet(sourceName)
+	if err != nil {
+		panic(err)
+	}
+	applicationsCmd.Flags().AddFlagSet(fs)
+}

cmd/ttnv3/devices.go

@@ -0,0 +1,41 @@
+// Copyright © 2023 The Things Network Foundation, The Things Industries B.V.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ttnv3
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"go.thethings.network/lorawan-stack-migrate/pkg/source"
+)
+
+var devicesCmd = &cobra.Command{
+	Use:     "device [dev-id] ...",
+	Short:   "Export devices by DevEUI",
+	Aliases: []string{"end-devices", "end-device", "devices", "dev"},
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf("%s called\n", cmd.Name())
+	},
+}
+
+func init() {
+	ttnv3Cmd.AddCommand(devicesCmd)
+
+	fs, err := source.FlagSet(sourceName)
+	if err != nil {
+		panic(err)
+	}
+	devicesCmd.Flags().AddFlagSet(fs)
+}

cmd/ttnv3/ttnv3.go

@@ -0,0 +1,33 @@
+// Copyright © 2023 The Things Network Foundation, The Things Industries B.V.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ttnv3
+
+import (
+	"github.com/spf13/cobra"
+	"go.thethings.network/lorawan-stack-migrate/cmd"
+)
+
+const sourceName = "ttnv3"
+
+// ttnv3Cmd represents the ttnv3 source
+var ttnv3Cmd = &cobra.Command{
+	Use:          sourceName + " ...",
+	Short:        "Export devices from The Things Stack",
+	SilenceUsage: true,
+}
+
+func init() {
+	cmd.RootCmd.AddCommand(ttnv3Cmd)
+}

cmd/version.go

@@ -45,5 +45,5 @@ var versionCmd = &cobra.Command{
 }
 
 func init() {
-	rootCmd.AddCommand(versionCmd)
+	RootCmd.AddCommand(versionCmd)
 }

pkg/source/source.go

@@ -93,24 +93,37 @@ func addPrefix(name, prefix string) string {
 	return prefix + name
 }
 
-// FlagSet returns flags for all configured sources.
-func FlagSet() *pflag.FlagSet {
-	flags := &pflag.FlagSet{}
-	names := []string{}
+// AllFlagSets returns flags for all configured sources prefixed with source names.
+func AllFlagSets() *pflag.FlagSet {
+	fs := new(pflag.FlagSet)
 	for _, r := range registeredSources {
-		if r.FlagSet != nil {
-			r.FlagSet.VisitAll(func(f *pflag.Flag) {
-				f.Name = addPrefix(f.Name, r.Name)
-			})
-			flags.AddFlagSet(r.FlagSet)
-			names = append(names, r.Name)
+		if r.FlagSet == nil {
+			continue
 		}
+		r.FlagSet.VisitAll(func(a *pflag.Flag) {
+			b := *a // Avoid modifying source flags
+			b.Name = addPrefix(b.Name, r.Name)
+			fs.AddFlag(&b)
+		})
 	}
-	flags.StringVar(&RootConfig.Source,
+	fs.StringVar(&RootConfig.Source,
 		"source",
 		"",
-		fmt.Sprintf("source (%s)", strings.Join(Names(), "|")))
-	return flags
+		fmt.Sprintf("source (%s)", strings.Join(Names(), "|")),
+	)
+	return fs
+}
+
+// FlagSet returns a flag set for a given source.
+func FlagSet(s string) (*pflag.FlagSet, error) {
+	src, ok := registeredSources[s]
+	if !ok {
+		return nil, errNoSource.New()
+	}
+	if src.FlagSet == nil {
+		return nil, errNoSource.New()
+	}
+	return src.FlagSet, nil
 }
 
 // Sources returns a map of registered Sources and their descriptions.