go-emlid/cmd/broadcast/main.go

package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"log/slog"
	"os"

	reach "forge.cadoles.com/cadoles/go-emlid/reach/client"
	"forge.cadoles.com/cadoles/go-emlid/reach/client/logger"
	"github.com/pkg/errors"
)

var (
	host        string = "192.168.42.1"
	filter      string = ""
	rawLogLevel string = "ERROR"
)

func init() {
	flag.StringVar(&rawLogLevel, "log-level", rawLogLevel, "log level")
	flag.StringVar(&host, "host", host, "the reachrs module host")
	flag.StringVar(&filter, "filter", filter, "filter the broadcast messages by name")
}

func main() {
	flag.Parse()

	ctx := context.Background()
	client := reach.NewClient(host)

	logLevel, err := logger.ParseLevel(rawLogLevel)
	if err != nil {
		fmt.Printf("[FATAL] %+v", errors.WithStack(err))
		os.Exit(1)
	}

	slog.SetLogLoggerLevel(logLevel)

	if err := client.Connect(ctx); err != nil {
		fmt.Printf("[FATAL] %+v", errors.WithStack(err))
		os.Exit(1)
	}

	defer func() {
		if err := client.Close(ctx); err != nil {
			fmt.Printf("[FATAL] %+v", errors.WithStack(err))
			os.Exit(1)
		}
	}()

	broadcasts, err := reach.OnBroadcast(ctx, client)
	if err != nil {
		fmt.Printf("[FATAL] %+v", errors.WithStack(err))
		os.Exit(1)
	}

	for b := range broadcasts {
		if filter != "" && b.Name != filter {
			continue
		}

		data, err := json.MarshalIndent(b, "", "  ")
		if err != nil {
			fmt.Printf("[ERROR] %+v", errors.WithStack(err))
			continue
		}

		fmt.Println(string(data))
	}
}