Move management server to a separate directory (#67)

* Move management server to a separate directory

management/cmd/management.go

@@ -0,0 +1,90 @@
+package cmd
+
+import (
+	"flag"
+	"fmt"
+	server2 "github.com/wiretrustee/wiretrustee/management/server"
+
+	"net"
+	"os"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"github.com/wiretrustee/wiretrustee/encryption"
+	mgmtProto "github.com/wiretrustee/wiretrustee/management/proto"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/keepalive"
+)
+
+var (
+	mgmtPort              int
+	mgmtDataDir           string
+	mgmtLetsencryptDomain string
+
+	kaep = keepalive.EnforcementPolicy{
+		MinTime:             15 * time.Second,
+		PermitWithoutStream: true,
+	}
+
+	kasp = keepalive.ServerParameters{
+		MaxConnectionIdle:     15 * time.Second,
+		MaxConnectionAgeGrace: 5 * time.Second,
+		Time:                  5 * time.Second,
+		Timeout:               2 * time.Second,
+	}
+
+	mgmtCmd = &cobra.Command{
+		Use:   "management",
+		Short: "start Wiretrustee Management Server",
+		Run: func(cmd *cobra.Command, args []string) {
+			flag.Parse()
+
+			if _, err := os.Stat(mgmtDataDir); os.IsNotExist(err) {
+				err = os.MkdirAll(mgmtDataDir, os.ModeDir)
+				if err != nil {
+					log.Fatalf("failed creating datadir: %s: %v", mgmtDataDir, err)
+				}
+			}
+
+			var opts []grpc.ServerOption
+
+			if mgmtLetsencryptDomain != "" {
+				transportCredentials := credentials.NewTLS(encryption.EnableLetsEncrypt(mgmtDataDir, mgmtLetsencryptDomain))
+				opts = append(opts, grpc.Creds(transportCredentials))
+			}
+
+			opts = append(opts, grpc.KeepaliveEnforcementPolicy(kaep), grpc.KeepaliveParams(kasp))
+			grpcServer := grpc.NewServer(opts...)
+
+			server, err := server2.NewServer(mgmtDataDir)
+			if err != nil {
+				log.Fatalf("failed creating new server: %v", err)
+			}
+			mgmtProto.RegisterManagementServiceServer(grpcServer, server)
+			log.Printf("started server: localhost:%v", mgmtPort)
+
+			lis, err := net.Listen("tcp", fmt.Sprintf(":%d", mgmtPort))
+			if err != nil {
+				log.Fatalf("failed to listen: %v", err)
+			}
+
+			go func() {
+				if err = grpcServer.Serve(lis); err != nil {
+					log.Fatalf("failed to serve gRpc server: %v", err)
+				}
+			}()
+
+			SetupCloseHandler()
+			<-stopCh
+			log.Println("Receive signal to stop running Management server")
+		},
+	}
+)
+
+func init() {
+	mgmtCmd.Flags().IntVar(&mgmtPort, "port", 33073, "server port to listen on")
+	mgmtCmd.Flags().StringVar(&mgmtDataDir, "datadir", "/var/lib/wiretrustee/", "server data directory location")
+	mgmtCmd.Flags().StringVar(&mgmtLetsencryptDomain, "letsencrypt-domain", "", "a domain to issue Let's Encrypt certificate for. Enables TLS using Let's Encrypt. Will fetch and renew certificate, and run the server with TLS")
+}

management/cmd/root.go

@@ -0,0 +1,70 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"runtime"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+const (
+	// ExitSetupFailed defines exit code
+	ExitSetupFailed = 1
+)
+
+var (
+	configPath        string
+	defaultConfigPath string
+	logLevel          string
+
+	rootCmd = &cobra.Command{
+		Use:   "wiretrustee",
+		Short: "",
+		Long:  "",
+	}
+
+	// Execution control channel for stopCh signal
+	stopCh chan int
+)
+
+// Execute executes the root command.
+func Execute() error {
+	return rootCmd.Execute()
+}
+func init() {
+
+	stopCh = make(chan int)
+
+	defaultConfigPath = "/etc/wiretrustee/config.json"
+	if runtime.GOOS == "windows" {
+		defaultConfigPath = os.Getenv("PROGRAMDATA") + "\\Wiretrustee\\" + "config.json"
+	}
+	rootCmd.PersistentFlags().StringVar(&configPath, "config", defaultConfigPath, "Wiretrustee config file location to write new config to")
+	rootCmd.PersistentFlags().StringVar(&logLevel, "log-level", "info", "")
+	rootCmd.AddCommand(mgmtCmd)
+}
+
+// SetupCloseHandler handles SIGTERM signal and exits with success
+func SetupCloseHandler() {
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+	go func() {
+		for range c {
+			fmt.Println("\r- Ctrl+C pressed in Terminal")
+			stopCh <- 0
+		}
+	}()
+}
+
+// InitLog parses and sets log-level input
+func InitLog(logLevel string) {
+	level, err := log.ParseLevel(logLevel)
+	if err != nil {
+		log.Errorf("Failed parsing log-level %s: %s", logLevel, err)
+		os.Exit(ExitSetupFailed)
+	}
+	log.SetLevel(level)
+}