storagenode-updater: add autoupdating (#3422)

cmd/storagenode-updater/main.go

@@ -9,6 +9,7 @@ import (
 	"bytes"
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"log"
@@ -37,10 +38,15 @@ import (
 	"storj.io/storj/pkg/storj"
 )
 
-const minCheckInterval = time.Minute
+const (
+	updaterServiceName = "storagenode-updater"
+	minCheckInterval   = time.Minute
+)
 
 var (
 	cancel context.CancelFunc
+	// TODO: replace with config value of random bytes in storagenode config.
+	nodeID storj.NodeID
 
 	rootCmd = &cobra.Command{
 		Use:   "storagenode-updater",
@@ -60,6 +66,7 @@ var (
 
 		BinaryLocation string `help:"the storage node executable binary location" default:"storagenode.exe"`
 		ServiceName    string `help:"storage node OS service name" default:"storagenode"`
+		// NB: can't use `log.output` because windows service command args containing "." are bugged.
 		Log string `help:"path to log file, if empty standard output will be used" default:""`
 	}
 
@@ -67,6 +74,8 @@ var (
 	identityDir string
 )
 
+type renameFunc func(currentVersion version.SemVer) error
+
 func init() {
 	// TODO: this will probably generate warnings for mismatched config fields.
 	defaultConfDir := fpath.ApplicationDir("storj", "storagenode")
@@ -81,14 +90,8 @@ func init() {
 }
 
 func cmdRun(cmd *cobra.Command, args []string) (err error) {
-	if runCfg.Log != "" {
+	closeLog, err := openLog()
-		logFile, err := os.OpenFile(runCfg.Log, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	defer func() { err = errs.Combine(err, closeLog()) }()
-		if err != nil {
-			log.Fatalf("error opening log file: %s", err)
-		}
-		defer func() { err = errs.Combine(err, logFile.Close()) }()
-		log.SetOutput(logFile)
-	}
 
 	if !fileExists(runCfg.BinaryLocation) {
 		log.Fatal("unable to find storage node executable binary")
@@ -98,9 +101,13 @@ func cmdRun(cmd *cobra.Command, args []string) (err error) {
 	if err != nil {
 		log.Fatalf("error loading identity: %s", err)
 	}
+	nodeID = ident.ID
+	if nodeID.IsZero() {
+		log.Fatal("empty node ID")
+	}
 
 	var ctx context.Context
-	ctx, cancel = context.WithCancel(context.Background())
+	ctx, cancel = process.Ctx(cmd)
 	c := make(chan os.Signal, 1)
 	signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
 
@@ -112,7 +119,13 @@ func cmdRun(cmd *cobra.Command, args []string) (err error) {
 	}()
 
 	loopFunc := func(ctx context.Context) (err error) {
-		if err := update(ctx, ident.ID); err != nil {
+		if err := update(ctx, runCfg.BinaryLocation, runCfg.ServiceName, renameStoragenode); err != nil {
+			// don't finish loop in case of error just wait for another execution
+			log.Println(err)
+		}
+
+		updaterBinName := os.Args[0]
+		if err := update(ctx, updaterBinName, updaterServiceName, renameUpdater); err != nil {
 			// don't finish loop in case of error just wait for another execution
 			log.Println(err)
 		}
@@ -136,24 +149,30 @@ func cmdRun(cmd *cobra.Command, args []string) (err error) {
 	return nil
 }
 
-func update(ctx context.Context, nodeID storj.NodeID) (err error) {
+func update(ctx context.Context, binPath, serviceName string, renameBinary renameFunc) (err error) {
-	client := checker.New(runCfg.ClientConfig)
+	if nodeID.IsZero() {
+		log.Fatal("empty node ID")
+	}
 
-	currentVersion, err := binaryVersion(runCfg.BinaryLocation)
+	var currentVersion version.SemVer
+	if serviceName == updaterServiceName {
+		// TODO: find better way to check this binary version
+		currentVersion = version.Build.Version
+	} else {
+		currentVersion, err = binaryVersion(binPath)
 		if err != nil {
 			return errs.Wrap(err)
 		}
+	}
 
+	client := checker.New(runCfg.ClientConfig)
 	log.Println("downloading versions from", runCfg.ServerAddress)
-	shouldUpdate, newVersion, err := client.ShouldUpdate(ctx, runCfg.ServiceName, nodeID)
+	shouldUpdate, newVersion, err := client.ShouldUpdate(ctx, serviceName, nodeID)
 	if err != nil {
 		return errs.Wrap(err)
 	}
 
 	if shouldUpdate {
-		downloadURL := newVersion.URL
-		downloadURL = strings.Replace(downloadURL, "{os}", runtime.GOOS, 1)
-		downloadURL = strings.Replace(downloadURL, "{arch}", runtime.GOARCH, 1)
 		// TODO: consolidate semver.Version and version.SemVer
 		suggestedVersion, err := newVersion.SemVer()
 		if err != nil {
@@ -161,12 +180,13 @@ func update(ctx context.Context, nodeID storj.NodeID) (err error) {
 		}
 
 		if currentVersion.Compare(suggestedVersion) < 0 {
-			tempArchive, err := ioutil.TempFile(os.TempDir(), runCfg.ServiceName)
+			tempArchive, err := ioutil.TempFile(os.TempDir(), serviceName)
 			if err != nil {
 				return errs.New("cannot create temporary archive: %v", err)
 			}
 			defer func() { err = errs.Combine(err, os.Remove(tempArchive.Name())) }()
 
+			downloadURL := parseDownloadURL(newVersion.URL)
 			log.Println("start downloading", downloadURL, "to", tempArchive.Name())
 			err = downloadArchive(ctx, tempArchive, downloadURL)
 			if err != nil {
@@ -174,24 +194,19 @@ func update(ctx context.Context, nodeID storj.NodeID) (err error) {
 			}
 			log.Println("finished downloading", downloadURL, "to", tempArchive.Name())
 
-			extension := filepath.Ext(runCfg.BinaryLocation)
+			err = renameBinary(currentVersion)
-			if extension != "" {
-				extension = "." + extension
-			}
-
-			dir := filepath.Dir(runCfg.BinaryLocation)
-			backupExec := filepath.Join(dir, runCfg.ServiceName+".old."+currentVersion.String()+extension)
-
-			if err = os.Rename(runCfg.BinaryLocation, backupExec); err != nil {
-				return errs.Wrap(err)
-			}
-
-			err = unpackBinary(ctx, tempArchive.Name(), runCfg.BinaryLocation)
 			if err != nil {
 				return errs.Wrap(err)
 			}
 
-			downloadedVersion, err := binaryVersion(runCfg.BinaryLocation)
+			err = unpackBinary(ctx, tempArchive.Name(), binPath)
+			if err != nil {
+				return errs.Wrap(err)
+			}
+
+			// TODO add here recovery even before starting service (if version command cannot be executed)
+
+			downloadedVersion, err := binaryVersion(binPath)
 			if err != nil {
 				return errs.Wrap(err)
 			}
@@ -200,13 +215,13 @@ func update(ctx context.Context, nodeID storj.NodeID) (err error) {
 				return errs.New("invalid version downloaded: wants %s got %s", suggestedVersion.String(), downloadedVersion.String())
 			}
 
-			log.Println("restarting service", runCfg.ServiceName)
+			log.Println("restarting service", serviceName)
-			err = restartSNService(runCfg.ServiceName)
+			err = restartService(serviceName)
 			if err != nil {
 				// TODO: should we try to recover from this?
 				return errs.New("unable to restart service: %v", err)
 			}
-			log.Println("service", runCfg.ServiceName, "restarted successfully")
+			log.Println("service", serviceName, "restarted successfully")
 
 			// TODO remove old binary ??
 			return nil
@@ -217,9 +232,41 @@ func update(ctx context.Context, nodeID storj.NodeID) (err error) {
 	return nil
 }
 
+func renameStoragenode(currentVersion version.SemVer) error {
+	extension := filepath.Ext(runCfg.BinaryLocation)
+	dir := filepath.Dir(runCfg.BinaryLocation)
+	backupExec := filepath.Join(dir, runCfg.ServiceName+".old."+currentVersion.String()+extension)
+
+	if err := os.Rename(runCfg.BinaryLocation, backupExec); err != nil {
+		return errs.Wrap(err)
+	}
+	return nil
+}
+
+func renameUpdater(_ version.SemVer) error {
+	updaterBinName := os.Args[0]
+	extension := filepath.Ext(updaterBinName)
+	dir := filepath.Dir(updaterBinName)
+	base := filepath.Base(updaterBinName)
+	base = base[:len(base)-len(extension)]
+	backupExec := filepath.Join(dir, base+".old"+extension)
+
+	if err := os.Rename(updaterBinName, backupExec); err != nil {
+		return errs.Wrap(err)
+	}
+	return nil
+}
+
+func parseDownloadURL(template string) string {
+	url := strings.Replace(template, "{os}", runtime.GOOS, 1)
+	url = strings.Replace(url, "{arch}", runtime.GOARCH, 1)
+	return url
+}
+
 func binaryVersion(location string) (version.SemVer, error) {
-	out, err := exec.Command(location, "version").Output()
+	out, err := exec.Command(location, "version").CombinedOutput()
 	if err != nil {
+		log.Printf("command output: %s", out)
 		return version.SemVer{}, err
 	}
 
@@ -283,16 +330,26 @@ func unpackBinary(ctx context.Context, archive, target string) (err error) {
 	return nil
 }
 
-func restartSNService(name string) error {
+func restartService(name string) error {
 	switch runtime.GOOS {
 	case "windows":
-		// TODO how run this as one command `net stop servicename && net start servicename`?
 		// TODO: combine stdout with err if err
-		_, err := exec.Command("net", "stop", name).CombinedOutput()
+		restartSvcBatPath := filepath.Join(os.TempDir(), "restartservice.bat")
+		restartSvcBat, err := os.Create(restartSvcBatPath)
 		if err != nil {
 			return err
 		}
-		_, err = exec.Command("net", "start", name).CombinedOutput()
+
+		restartStr := fmt.Sprintf("net stop %s && net start %s", name, name)
+		_, err = restartSvcBat.WriteString(restartStr)
+		if err != nil {
+			return err
+		}
+		if err := restartSvcBat.Close(); err != nil {
+			return err
+		}
+
+		_, err = exec.Command(restartSvcBat.Name()).CombinedOutput()
 		if err != nil {
 			return err
 		}
@@ -311,5 +368,22 @@ func fileExists(filename string) bool {
 }
 
 func main() {
-	_ = rootCmd.Execute()
+	process.Exec(rootCmd)
+}
+
+// TODO: improve logging; other commands use zap but due to an apparent
+// windows bug we're unable to use the existing process logging infrastructure.
+func openLog() (closeFunc func() error, err error) {
+	closeFunc = func() error { return nil }
+
+	if runCfg.Log != "" {
+		logFile, err := os.OpenFile(runCfg.Log, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+		if err != nil {
+			log.Printf("error opening log file: %s", err)
+			return closeFunc, err
+		}
+		log.SetOutput(logFile)
+		return logFile.Close, nil
+	}
+	return closeFunc, nil
 }

cmd/storagenode-updater/main_test.go

@@ -4,68 +4,197 @@
 package main_test
 
 import (
+	"archive/zip"
+	"fmt"
+	"io"
 	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"os"
 	"os/exec"
+	"path/filepath"
+	"runtime"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
 
 	"storj.io/storj/internal/testcontext"
+	"storj.io/storj/internal/testidentity"
+	"storj.io/storj/internal/version"
+	"storj.io/storj/pkg/identity"
+	"storj.io/storj/pkg/storj"
 	"storj.io/storj/versioncontrol"
 )
 
-func TestAutoUpdater(t *testing.T) {
+const (
+	oldVersion = "v0.19.0"
+	newVersion = "v0.19.5"
+)
+
+func TestAutoUpdater_unix(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("requires storagenode and storagenode-updater to be installed as windows services")
+	}
+
+	// TODO cleanup `.exe` extension for different OS
+
 	ctx := testcontext.New(t)
 	defer ctx.Cleanup()
 
-	testFiles := []struct {
+	oldSemVer, err := version.NewSemVer(oldVersion)
-		src   string
-		dst   string
-		perms os.FileMode
-	}{
-		{
-			"testdata/fake-storagenode",
-			ctx.File("storagenode"),
-			0755,
-		},
-		{
-			"testdata/fake-ident.cert",
-			ctx.File("identity.cert"),
-			0644,
-		},
-		{
-			"testdata/fake-ident.key",
-			ctx.File("identity.key"),
-			0600,
-		},
-	}
-
-	for _, file := range testFiles {
-		content, err := ioutil.ReadFile(file.src)
 	require.NoError(t, err)
 
-		err = ioutil.WriteFile(file.dst, content, file.perms)
+	newSemVer, err := version.NewSemVer(newVersion)
 	require.NoError(t, err)
+
+	oldInfo := version.Info{
+		Timestamp:  time.Now(),
+		CommitHash: "",
+		Version:    oldSemVer,
+		Release:    false,
 	}
 
+	// build real bin with old version, will be used for both storagenode and updater
+	oldBin := ctx.CompileWithVersion("", oldInfo)
+	storagenodePath := ctx.File("fake", "storagenode.exe")
+	copy(ctx, t, oldBin, storagenodePath)
+
+	updaterPath := ctx.File("fake", "storagenode-updater.exe")
+	move(t, oldBin, updaterPath)
+
+	// build real storagenode and updater with new version
+	newInfo := version.Info{
+		Timestamp:  time.Now(),
+		CommitHash: "",
+		Version:    newSemVer,
+		Release:    false,
+	}
+	newBin := ctx.CompileWithVersion("", newInfo)
+	updateBins := map[string]string{
+		"storagenode":         newBin,
+		"storagenode-updater": newBin,
+	}
+
+	// run versioncontrol and update zips http servers
+	versionControlPeer, cleanupVersionControl := testVersionControlWithUpdates(ctx, t, updateBins)
+	defer cleanupVersionControl()
+
+	logPath := ctx.File("storagenode-updater.log")
+
+	// write identity files to disk for use in rollout calculation
+	identConfig := testIdentityFiles(ctx, t)
+
+	// run updater (update)
+	args := []string{"run"}
+	args = append(args, "--config-dir", ctx.Dir())
+	args = append(args, "--server-address", "http://"+versionControlPeer.Addr())
+	args = append(args, "--binary-location", storagenodePath)
+	args = append(args, "--check-interval", "0s")
+	args = append(args, "--identity.cert-path", identConfig.CertPath)
+	args = append(args, "--identity.key-path", identConfig.KeyPath)
+	args = append(args, "--log", logPath)
+
+	// NB: updater currently uses `log.SetOutput` so all output after that call
+	// only goes to the log file.
+	out, err := exec.Command(updaterPath, args...).CombinedOutput()
+	logData, logErr := ioutil.ReadFile(logPath)
+	if assert.NoError(t, logErr) {
+		logStr := string(logData)
+		t.Log(logStr)
+		if !assert.Contains(t, logStr, "storagenode restarted successfully") {
+			t.Log(logStr)
+		}
+		if !assert.Contains(t, logStr, "storagenode-updater restarted successfully") {
+			t.Log(logStr)
+		}
+	} else {
+		t.Log(string(out))
+	}
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
+
+	oldStoragenode := ctx.File("fake", "storagenode"+".old."+oldVersion+".exe")
+	oldStoragenodeInfo, err := os.Stat(oldStoragenode)
+	require.NoError(t, err)
+	require.NotNil(t, oldStoragenodeInfo)
+	require.NotZero(t, oldStoragenodeInfo.Size())
+
+	backupUpdater := ctx.File("fake", "storagenode-updater.old.exe")
+	backupUpdaterInfo, err := os.Stat(backupUpdater)
+	require.NoError(t, err)
+	require.NotNil(t, backupUpdaterInfo)
+	require.NotZero(t, backupUpdaterInfo.Size())
+}
+
+func move(t *testing.T, src, dst string) {
+	err := os.Rename(src, dst)
+	require.NoError(t, err)
+}
+
+func copy(ctx *testcontext.Context, t *testing.T, src, dst string) {
+	s, err := os.Open(src)
+	require.NoError(t, err)
+	defer ctx.Check(s.Close)
+
+	d, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE, 0755)
+	require.NoError(t, err)
+	defer ctx.Check(d.Close)
+
+	_, err = io.Copy(d, s)
+	require.NoError(t, err)
+}
+
+func testIdentityFiles(ctx *testcontext.Context, t *testing.T) identity.Config {
+	t.Helper()
+
+	ident, err := testidentity.PregeneratedIdentity(0, storj.LatestIDVersion())
+	require.NoError(t, err)
+
+	identConfig := identity.Config{
+		CertPath: ctx.File("identity", "identity.cert"),
+		KeyPath:  ctx.File("identity", "identity.Key"),
+	}
+	err = identConfig.Save(ident)
+	require.NoError(t, err)
+
+	configData := fmt.Sprintf(
+		"identity.cert-path: %s\nidentity.key-path: %s",
+		identConfig.CertPath,
+		identConfig.KeyPath,
+	)
+	err = ioutil.WriteFile(ctx.File("config.yaml"), []byte(configData), 0644)
+	require.NoError(t, err)
+
+	return identConfig
+}
+
+func testVersionControlWithUpdates(ctx *testcontext.Context, t *testing.T, updateBins map[string]string) (peer *versioncontrol.Peer, cleanup func()) {
+	t.Helper()
+
 	var mux http.ServeMux
-	content, err := ioutil.ReadFile("testdata/fake-storagenode.zip")
+	for name, src := range updateBins {
+		dst := ctx.File("updates", name+".zip")
+		zipBin(ctx, t, dst, src)
+		zipData, err := ioutil.ReadFile(dst)
 		require.NoError(t, err)
-	mux.HandleFunc("/download", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+
-		_, err := w.Write(content)
+		mux.HandleFunc("/"+name, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			_, err := w.Write(zipData)
 			require.NoError(t, err)
 		}))
+	}
 
 	ts := httptest.NewServer(&mux)
-	defer ts.Close()
 
 	config := &versioncontrol.Config{
-		Address: "127.0.0.1:0",
+		// TODO: add STORJ_VERSION_SERVER_ADDR property to Product.wxs for testing
+		// TODO: set address back to `127.0.0.1:0`
+		Address: "127.0.0.1:10000",
+		// NB: this config field is required for versioncontrol to run.
 		Versions: versioncontrol.OldVersionConfig{
 			Satellite:   "v0.0.1",
 			Storagenode: "v0.0.1",
@@ -73,11 +202,22 @@ func TestAutoUpdater(t *testing.T) {
 			Gateway:     "v0.0.1",
 			Identity:    "v0.0.1",
 		},
+		// TODO use random seed
 		Binary: versioncontrol.ProcessesConfig{
 			Storagenode: versioncontrol.ProcessConfig{
 				Suggested: versioncontrol.VersionConfig{
-					Version: "0.19.5",
+					Version: newVersion,
-					URL:     ts.URL + "/download",
+					URL:     ts.URL + "/storagenode",
+				},
+				Rollout: versioncontrol.RolloutConfig{
+					Seed:   "0000000000000000000000000000000000000000000000000000000000000001",
+					Cursor: 100,
+				},
+			},
+			StoragenodeUpdater: versioncontrol.ProcessConfig{
+				Suggested: versioncontrol.VersionConfig{
+					Version: newVersion,
+					URL:     ts.URL + "/storagenode-updater",
 				},
 				Rollout: versioncontrol.RolloutConfig{
 					Seed:   "0000000000000000000000000000000000000000000000000000000000000001",
@@ -91,31 +231,30 @@ func TestAutoUpdater(t *testing.T) {
 	ctx.Go(func() error {
 		return peer.Run(ctx)
 	})
-	defer ctx.Check(peer.Close)
+	return peer, func() {
-
+		ts.Close()
-	args := make([]string, 0)
+		ctx.Check(peer.Close)
-	args = append(args, "run")
-	args = append(args, "main.go")
-	args = append(args, "run")
-	args = append(args, "--server-address")
-	args = append(args, "http://"+peer.Addr())
-	args = append(args, "--binary-location")
-	args = append(args, testFiles[0].dst)
-	args = append(args, "--check-interval")
-	args = append(args, "0s")
-	args = append(args, "--identity.cert-path")
-	args = append(args, testFiles[1].dst)
-	args = append(args, "--identity.key-path")
-	args = append(args, testFiles[2].dst)
-
-	out, err := exec.Command("go", args...).CombinedOutput()
-	result := string(out)
-	if !assert.NoError(t, err) {
-		t.Log(result)
-		t.Fatal(err)
-	}
-
-	if !assert.Contains(t, result, "restarted successfully") {
-		t.Log(result)
 	}
 }
+
+func zipBin(ctx *testcontext.Context, t *testing.T, dst, src string) {
+	t.Helper()
+
+	zipFile, err := os.Create(dst)
+	require.NoError(t, err)
+
+	base := filepath.Base(dst)
+	base = base[:len(base)-len(".zip")]
+
+	writer := zip.NewWriter(zipFile)
+	defer ctx.Check(writer.Close)
+
+	contents, err := writer.Create(base)
+	require.NoError(t, err)
+
+	data, err := ioutil.ReadFile(src)
+	require.NoError(t, err)
+
+	_, err = contents.Write(data)
+	require.NoError(t, err)
+}

internal/testcontext/compile.go

@@ -9,7 +9,10 @@ import (
 	"path"
 	"path/filepath"
 	"runtime"
+	"strconv"
 	"testing"
+
+	"storj.io/storj/internal/version"
 )
 
 // CLibMath is the standard C math library (see `man math.h`).
@@ -24,7 +27,7 @@ type CompileCOptions struct {
 }
 
 // Compile compiles the specified package and returns the executable name.
-func (ctx *Context) Compile(pkg string) string {
+func (ctx *Context) Compile(pkg string, preArgs ...string) string {
 	ctx.test.Helper()
 
 	var binName string
@@ -37,7 +40,7 @@ func (ctx *Context) Compile(pkg string) string {
 
 	exe := ctx.File("build", binName+".exe")
 
-	args := []string{"build"}
+	args := append([]string{"build"}, preArgs...)
 	if raceEnabled {
 		args = append(args, "-race")
 	}
@@ -58,6 +61,36 @@ func (ctx *Context) Compile(pkg string) string {
 	return exe
 }
 
+// CompileWithVersion compiles the specified package with the version variables set
+// to the passed version info values and returns the executable name.
+func (ctx *Context) CompileWithVersion(pkg string, info version.Info) string {
+	ctx.test.Helper()
+
+	ldFlagsX := map[string]string{
+		"storj.io/storj/internal/version.buildTimestamp":  strconv.Itoa(int(info.Timestamp.Unix())),
+		"storj.io/storj/internal/version.buildCommitHash": info.CommitHash,
+		"storj.io/storj/internal/version.buildVersion":    info.Version.String(),
+		"storj.io/storj/internal/version.buildRelease":    strconv.FormatBool(info.Release),
+	}
+
+	return ctx.CompileWithLDFlagsX(pkg, ldFlagsX)
+}
+
+// CompileWithLDFlagsX compiles the specified package with the -ldflags flag set to
+// "-s -w [-X <key>=<value>,...]" given the passed map and returns the executable name.
+func (ctx *Context) CompileWithLDFlagsX(pkg string, ldFlagsX map[string]string) string {
+	ctx.test.Helper()
+
+	var ldFlags = "-s -w"
+	if ldFlagsX != nil {
+		for key, value := range ldFlagsX {
+			ldFlags += (" -X " + key + "=" + value)
+		}
+	}
+
+	return ctx.Compile(pkg, "-ldflags", ldFlags)
+}
+
 // CompileShared compiles pkg as c-shared.
 // TODO: support inclusion from other directories
 //  (cgo header paths are currently relative to package root)

internal/version/checker/client.go

@@ -110,7 +110,7 @@ func (client *Client) Process(ctx context.Context, processName string) (process
 	}
 
 	processesValue := reflect.ValueOf(versions.Processes)
-	field := processesValue.FieldByName(strings.Title(processName))
+	field := processesValue.FieldByName(kebabToPascal(processName))
 
 	processNameErr := Error.New("invalid process name: %s\n", processName)
 	if field == (reflect.Value{}) {
@@ -140,3 +140,7 @@ func (client *Client) ShouldUpdate(ctx context.Context, processName string, node
 	}
 	return false, version.Version{}, nil
 }
+
+func kebabToPascal(str string) string {
+	return strings.ReplaceAll(strings.Title(str), "-", "")
+}

internal/version/version.go

@@ -82,6 +82,7 @@ type AllowedVersions struct {
 type Processes struct {
 	Satellite          Process `json:"satellite"`
 	Storagenode        Process `json:"storagenode"`
+	StoragenodeUpdater Process `json:"storagenode-updater"`
 	Uplink             Process `json:"uplink"`
 	Gateway            Process `json:"gateway"`
 	Identity           Process `json:"identity"`

internal/version/version_test.go

@@ -115,7 +115,7 @@ func TestShouldUpdate(t *testing.T) {
 	tolerance := total * 2 / 100 // 2%
 
 	for p := 10; p < 100; p += 10 {
-		var updates int
+		var rollouts int
 		percentage := p
 		cursor := version.PercentageToCursor(percentage)
 
@@ -131,12 +131,12 @@ func TestShouldUpdate(t *testing.T) {
 			require.NoError(t, err)
 
 			if version.ShouldUpdate(rollout, nodeID) {
-				updates++
+				rollouts++
 			}
 		}
 
 		assert.Condition(t, func() bool {
-			diff := updates - (total * percentage / 100)
+			diff := rollouts - (total * percentage / 100)
 			return int(math.Abs(float64(diff))) < tolerance
 		})
 	}

versioncontrol/peer.go

@@ -51,6 +51,7 @@ type OldVersionConfig struct {
 type ProcessesConfig struct {
 	Satellite          ProcessConfig
 	Storagenode        ProcessConfig
+	StoragenodeUpdater ProcessConfig
 	Uplink             ProcessConfig
 	Gateway            ProcessConfig
 	Identity           ProcessConfig
@@ -161,6 +162,11 @@ func New(log *zap.Logger, config *Config) (peer *Peer, err error) {
 		return nil, RolloutErr.Wrap(err)
 	}
 
+	peer.Versions.Processes.StoragenodeUpdater, err = configToProcess(config.Binary.StoragenodeUpdater)
+	if err != nil {
+		return nil, RolloutErr.Wrap(err)
+	}
+
 	peer.Versions.Processes.Uplink, err = configToProcess(config.Binary.Uplink)
 	if err != nil {
 		return nil, RolloutErr.Wrap(err)