chore: update golang (to 1.20.x) and golangci-linter (#1388)

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

pkg/debug/swagger/swagger.go

@@ -21,7 +21,7 @@ func SetupSwaggerRoutes(conf *config.Config, router *mux.Router, authFunc mux.Mi
 	log log.Logger,
 ) {
 	log.Info().Msg("setting up swagger route")
-	// swagger swagger "/swagger/v2/index.html"
+	// swagger "/swagger/v2/index.html"
 	swgRouter := router.PathPrefix("/swagger/v2/").Subrouter()
 	swgRouter.Use(authFunc)
 	swgRouter.Methods("GET").Handler(httpSwagger.WrapHandler)

pkg/debug/swagger/swagger_disabled.go

@@ -11,15 +11,14 @@ import (
 	"github.com/gorilla/mux"
 
 	"zotregistry.io/zot/pkg/api/config"
-	"zotregistry.io/zot/pkg/log" //nolint:goimports
-	// as required by swaggo.
+	"zotregistry.io/zot/pkg/log"
 	_ "zotregistry.io/zot/swagger"
 )
 
 func SetupSwaggerRoutes(conf *config.Config, router *mux.Router, authFunc mux.MiddlewareFunc,
 	log log.Logger,
 ) {
-	// swagger swagger "/swagger/v2/index.html"
+	// swagger "/swagger/v2/index.html"
 	log.Warn().Msg("skipping enabling swagger because given zot binary " +
 		"doesn't include this feature, please build a binary that does so")
 }

pkg/extensions/extension_userprefs_test.go

@@ -30,7 +30,7 @@ func TestHandlers(t *testing.T) {
 	mockrepoDB := mocks.RepoDBMock{}
 
 	Convey("No repo in request", t, func() {
-		request := httptest.NewRequest("GET", UserprefsBaseURL+"", strings.NewReader("My string"))
+		request := httptest.NewRequest(http.MethodGet, UserprefsBaseURL+"", strings.NewReader("My string"))
 		response := httptest.NewRecorder()
 
 		extensions.PutStar(response, request, mockrepoDB, log)
@@ -45,7 +45,7 @@ func TestHandlers(t *testing.T) {
 	})
 
 	Convey("Empty repo in request", t, func() {
-		request := httptest.NewRequest("GET", UserprefsBaseURL+"?repo=", strings.NewReader("My string"))
+		request := httptest.NewRequest(http.MethodGet, UserprefsBaseURL+"?repo=", strings.NewReader("My string"))
 		response := httptest.NewRecorder()
 
 		extensions.PutStar(response, request, mockrepoDB, log)
@@ -60,7 +60,7 @@ func TestHandlers(t *testing.T) {
 	})
 
 	Convey("ToggleStarRepo different errors", t, func() {
-		request := httptest.NewRequest("GET", UserprefsBaseURL+"?repo=test",
+		request := httptest.NewRequest(http.MethodGet, UserprefsBaseURL+"?repo=test",
 			strings.NewReader("My string"))
 
 		Convey("ErrRepoMetaNotFound", func() {

pkg/extensions/search/cve/cve_test.go

@@ -111,7 +111,8 @@ func generateTestData(dbDir string) error { //nolint: gocyclo
 		return err
 	}
 
-	if err = os.WriteFile(path.Join(dbDir, "zot-nonreadable-test", "index.json"), buf, 0o111); err != nil {
+	if err = os.WriteFile(path.Join(dbDir, "zot-nonreadable-test", "index.json"), //nolint:gosec // test code
+		buf, 0o111); err != nil {
 		return err
 	}
 

pkg/extensions/search/resolver.go

@@ -27,7 +27,9 @@ import (
 	"zotregistry.io/zot/pkg/meta/repodb"
 	localCtx "zotregistry.io/zot/pkg/requestcontext"
 	"zotregistry.io/zot/pkg/storage"
-) // THIS CODE IS A STARTING POINT ONLY. IT WILL NOT BE UPDATED WITH SCHEMA CHANGES.
+)
+
+// THIS CODE IS A STARTING POINT ONLY. IT WILL NOT BE UPDATED WITH SCHEMA CHANGES.
 
 const (
 	querySizeLimit = 256

pkg/meta/repodb/repodb.go

@@ -14,7 +14,7 @@ const (
 	CosignType        = "cosign"
 )
 
-// Used to model changes to an object after a call to the the DB.
+// Used to model changes to an object after a call to the DB.
 type ToggleState int
 
 const (

pkg/meta/repodb/repodb_test.go

@@ -501,7 +501,7 @@ func RunRepoDBTests(repoDB repodb.RepoDB, preparationFuncs ...func() error) {
 			So(err, ShouldBeNil)
 			So(repoMeta.Stars, ShouldEqual, 0)
 
-			repoMeta, err = repoDB.GetRepoMeta("badRepo")
+			_, err = repoDB.GetRepoMeta("badRepo")
 			So(err, ShouldNotBeNil)
 		})
 
@@ -2663,7 +2663,7 @@ func generateTestImage() ([]byte, []byte, error) {
 	// init layers with random values
 	for i := range layers {
 		//nolint:gosec
-		_, err := rand.Read(layers[i])
+		_, err := rand.Read(layers[i]) //nolint:staticcheck
 		if err != nil {
 			return []byte{}, []byte{}, err
 		}

pkg/meta/repodb/repodbfactory/repodb_factory.go

@@ -132,7 +132,7 @@ func toStringIfOk(cacheDriverConfig map[string]interface{}, param string, log lo
 	}
 
 	if str == "" {
-		log.Error().Msgf("parsing CacheDriver config failed, field '%s' is is empty", param)
+		log.Error().Msgf("parsing CacheDriver config failed, field '%s' is empty", param)
 
 		return "", false
 	}

pkg/storage/common.go

@@ -203,7 +203,6 @@ func CheckIfIndexNeedsUpdate(index *ispec.Index, desc *ispec.Descriptor,
 		manifest := manifest
 		if reference == manifest.Digest.String() {
 			// nothing changed, so don't update
-			desc = &manifest
 			updateIndex = false
 
 			break
@@ -213,7 +212,6 @@ func CheckIfIndexNeedsUpdate(index *ispec.Index, desc *ispec.Descriptor,
 		if ok && v == reference {
 			if manifest.Digest.String() == desc.Digest.String() {
 				// nothing changed, so don't update
-				desc = &manifest
 				updateIndex = false
 
 				break

pkg/storage/s3/s3.go

@@ -1458,7 +1458,7 @@ func (is *ObjectStorage) getOriginalBlobFromDisk(duplicateBlobs []string) (strin
 }
 
 func (is *ObjectStorage) getOriginalBlob(digest godigest.Digest, duplicateBlobs []string) (string, error) {
-	originalBlob := ""
+	var originalBlob string
 
 	var err error
 

pkg/test/common_test.go

@@ -1229,7 +1229,7 @@ func TestGenerateNotationCerts(t *testing.T) {
 		So(err, ShouldBeNil)
 		signingKeysBuf, err := json.Marshal(notconfig.SigningKeys{})
 		So(err, ShouldBeNil)
-		err = os.WriteFile(filePath, signingKeysBuf, 0o555)
+		err = os.WriteFile(filePath, signingKeysBuf, 0o555) //nolint:gosec // test code
 		So(err, ShouldBeNil)
 		err = test.GenerateNotationCerts(t.TempDir(), "cert")
 		So(err, ShouldNotBeNil)