rough 'share again' (#41)

cmd/zrok/share_again.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	ui "github.com/gizak/termui/v3"
+	"github.com/go-openapi/runtime"
+	httptransport "github.com/go-openapi/runtime/client"
+	"github.com/openziti-test-kitchen/zrok/endpoints/backend"
+	"github.com/openziti-test-kitchen/zrok/rest_client_zrok"
+	"github.com/openziti-test-kitchen/zrok/rest_client_zrok/service"
+	"github.com/openziti-test-kitchen/zrok/rest_model_zrok"
+	"github.com/openziti-test-kitchen/zrok/zrokdir"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"net/url"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+func init() {
+	shareCmd.AddCommand(newShareAgainCommand().cmd)
+}
+
+type shareAgainCommand struct {
+	cmd *cobra.Command
+}
+
+func newShareAgainCommand() *shareAgainCommand {
+	cmd := &cobra.Command{
+		Use:   "again <serviceToken> <targetEndpoint>",
+		Short: "Share a previously reserved service again",
+		Args:  cobra.ExactArgs(2),
+	}
+	command := &shareAgainCommand{cmd: cmd}
+	cmd.Run = command.run
+	return command
+}
+
+func (cmd *shareAgainCommand) run(_ *cobra.Command, args []string) {
+	targetEndpoint, err := url.Parse(args[1])
+	if err != nil {
+		if !panicInstead {
+			showError("invalid target endpoint URL", err)
+		}
+		panic(err)
+	}
+	if targetEndpoint.Scheme == "" {
+		targetEndpoint.Scheme = "https"
+	}
+
+	env, err := zrokdir.LoadEnvironment()
+	if err != nil {
+		if !panicInstead {
+			showError("unable to load environment; did you 'zrok enable'?", err)
+		}
+		panic(err)
+	}
+	zif, err := zrokdir.ZitiIdentityFile("backend")
+	if err != nil {
+		if !panicInstead {
+			showError("unable to load ziti identity configuration", err)
+		}
+		panic(err)
+	}
+	svcToken := args[0]
+	cfg := &backend.Config{
+		IdentityPath:    zif,
+		EndpointAddress: targetEndpoint.String(),
+		Service:         svcToken,
+	}
+
+	zrok, err := zrokdir.ZrokClient(env.ApiEndpoint)
+	if err != nil {
+		if !panicInstead {
+			showError("unable to create zrok client", err)
+		}
+		panic(err)
+	}
+	auth := httptransport.APIKeyAuth("X-TOKEN", "header", env.Token)
+
+	c := make(chan os.Signal)
+	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		<-c
+		cmd.destroy(env.ZId, cfg, zrok, auth)
+		os.Exit(0)
+	}()
+
+	httpProxy, err := backend.NewHTTP(cfg)
+	if err != nil {
+		ui.Close()
+		if !panicInstead {
+			showError("unable to create http backend", err)
+		}
+		panic(err)
+	}
+
+	go func() {
+		if err := httpProxy.Run(); err != nil {
+			if !panicInstead {
+				showError("unable to run http proxy", err)
+			}
+			panic(err)
+		}
+	}()
+
+	logrus.Infof("share your zrok service; use this command for access: 'zrok access private %v'", svcToken)
+	for {
+		time.Sleep(30 * time.Second)
+	}
+}
+
+func (self *shareAgainCommand) destroy(id string, cfg *backend.Config, zrok *rest_client_zrok.Zrok, auth runtime.ClientAuthInfoWriter) {
+	logrus.Debugf("shutting down '%v'", cfg.Service)
+	req := service.NewUnshareParams()
+	req.Body = &rest_model_zrok.UnshareRequest{
+		ZID:     id,
+		SvcName: cfg.Service,
+	}
+	if _, err := zrok.Service.Unshare(req, auth); err == nil {
+		logrus.Debugf("shutdown complete")
+	} else {
+		logrus.Errorf("error shutting down: %v", err)
+	}
+}