Move main.go

cmd/sysctl/main.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+	"os/signal"
+	"time"
+	//"syscall"
+	"github.com/edgebox-iot/sysctl/internal/diagnostics"
+
+)
+
+func main() {
+
+	// load command line arguments
+
+	version := flag.Bool("version", false, "Get the version info")
+	name := flag.String("name", "edgebox", "name for the service")
+
+	flag.Parse()
+
+	if *version {
+		printVersion()
+		os.Exit(0)
+	} 
+
+	log.Printf("Starting Sysctl service for %s", *name)
+
+	// setup signal catching
+	sigs := make(chan os.Signal, 1)
+
+	// catch all signals since not explicitly listing
+	signal.Notify(sigs)
+
+	// Cathing specific signals can be done with:
+	//signal.Notify(sigs,syscall.SIGQUIT)
+
+	// method invoked upon seeing signal
+	go func() {
+		s := <-sigs
+		log.Printf("RECEIVED SIGNAL: %s", s)
+		appCleanup()
+		os.Exit(1)
+	}()
+
+	// infinite loop
+	for {
+
+		log.Printf("Executing instruction %s", *name)
+
+		// wait random number of milliseconds
+		Nsecs := 1000
+		log.Printf("Next instruction executed in %dms", Nsecs)
+		time.Sleep(time.Millisecond * time.Duration(Nsecs))
+	}
+
+}
+
+// AppCleanup : cleanup app state before exit
+func appCleanup() {
+	log.Println("Cleaning up app status before exit")
+}
+
+func printVersion() {
+	log.Printf(
+		"version: %s\ncommit: %s\nbuild time: %s",
+		diagnostics.Version, diagnostics.Commit, diagnostics.BuildDate,
+	)
+}