first working PoC

main.go

@@ -0,0 +1,63 @@
+package main // import "github.com/costela/wesher"
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/sirupsen/logrus"
+)
+
+func main() {
+	config, err := loadConfig()
+	if err != nil {
+		logrus.Fatal(err)
+	}
+	logLevel, err := logrus.ParseLevel(config.LogLevel)
+	if err != nil {
+		logrus.Fatalf("could not parse loglevel: %s", err)
+	}
+	logrus.SetLevel(logLevel)
+
+	wg, err := newWGConfig(config.InterfaceName, config.WireguardPort)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	cluster, err := newCluster(config, wg)
+	if err != nil {
+		logrus.Fatalf("could not create cluster: %s", err)
+	}
+
+	nodec, errc := cluster.members() // avoid deadlocks by starting before join
+	if err := cluster.join(config.JoinAddrs); err != nil {
+		logrus.Fatalf("could not join cluster: %s", err)
+	}
+
+	incomingSigs := make(chan os.Signal, 1)
+	signal.Notify(incomingSigs, syscall.SIGTERM, os.Interrupt)
+	for {
+		select {
+		case nodes := <-nodec:
+			logrus.Info("cluster members:\n")
+			for _, node := range nodes {
+				logrus.Infof("\taddr: %s, overlay: %s, pubkey: %s", node.Addr, node.OverlayAddr, node.PubKey)
+			}
+			if err := wg.downInterface(); err != nil {
+				logrus.Errorf("could not down interface: %s", err)
+			}
+			if err := wg.writeConf(nodes); err != nil {
+				logrus.Errorf("could not write config: %s", err)
+			}
+			if err := wg.upInterface(); err != nil {
+				logrus.Errorf("could not up interface: %s", err)
+			}
+		case errs := <-errc:
+			logrus.Errorf("could not receive node info: %s", errs)
+		case <-incomingSigs:
+			logrus.Info("terminating...")
+			cluster.leave()
+			os.Exit(0)
+		}
+	}
+}