Split client app into cmd and daemon service (#239)

client/cmd/down.go

@@ -0,0 +1,37 @@
+package cmd
+
+import (
+	"context"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+
+	"github.com/wiretrustee/wiretrustee/client/proto"
+)
+
+var downCmd = &cobra.Command{
+	Use:   "down",
+	Short: "down wiretrustee connections",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars()
+
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+		defer cancel()
+
+		conn, err := DialClientGRPCServer(ctx, daemonAddr)
+		if err != nil {
+			log.Errorf("failed to connect to service CLI interface %v", err)
+			return err
+		}
+		defer conn.Close()
+
+		daemonClient := proto.NewDaemonServiceClient(conn)
+
+		if _, err := daemonClient.Down(ctx, &proto.DownRequest{}); err != nil {
+			log.Errorf("call service down method: %v", err)
+			return err
+		}
+		return nil
+	},
+}