feat: HTTP API server with SSE and SPA serving (HAN-389) (#16)

cmd/server/main.go

@@ -0,0 +1,36 @@
+// Command server starts the ExploreDNS HTTP API server.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/hits/ExploreDNS/web/api"
+)
+
+func main() {
+	addr := flag.String("addr", ":8080", "listen address (host:port)")
+	flag.Parse()
+
+	srv := api.NewServer(*addr)
+	if err := srv.Start(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+
+	log.Printf("ExploreDNS API server listening on %s", srv.Addr())
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+
+	log.Println("Shutting down...")
+	if err := srv.Shutdown(15 * time.Second); err != nil {
+		log.Printf("Shutdown error: %v", err)
+	}
+}