optimize lint logic (#586)

Signed-off-by: yxxhero <aiopsclub@163.com>

.github/workflows/lint.yaml

@@ -25,4 +25,4 @@ jobs:
       - name: Golangci lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.48.0
+          version: v1.50.1

.golangci.yaml

@@ -257,34 +257,35 @@ linters:
   enable:
     - bodyclose
     - depguard
-    # - dogsled
-    # - dupl
+    - usestdlibvars
+    - reassign
     - errcheck
     - funlen
     - gocognit
     - goconst
-    # - gocritic
-    # - godox
     - gofmt
     - goimports
     - revive
-    # - gosec
     - gosimple
     - govet
     - ineffassign
-    # - interfacer
     - misspell
     - nakedret
     - exportloopref
     - staticcheck
-    - structcheck
-    # - stylecheck
     - typecheck
     - unconvert
     - unparam
     - unused
     - whitespace
     - gci
+    # - gocritic
+    # - godox
+    # - gosec
+    # - interfacer
+    # - stylecheck
+    # - dogsled
+    # - dupl
   # don't enable:
   # - deadcode
   # - gochecknoglobals

pkg/app/init_test.go

@@ -30,7 +30,7 @@ func TestDownloadfile(t *testing.T) {
 		{
 			name: "download 404",
 			handler: func(w http.ResponseWriter, r *http.Request) {
-				w.WriteHeader(404)
+				w.WriteHeader(http.StatusNotFound)
 				fmt.Fprint(w, "not found")
 			},
 			wantError: "download .*? error, code: 404",
@@ -38,7 +38,7 @@ func TestDownloadfile(t *testing.T) {
 		{
 			name: "download 500",
 			handler: func(w http.ResponseWriter, r *http.Request) {
-				w.WriteHeader(500)
+				w.WriteHeader(http.StatusInternalServerError)
 				fmt.Fprint(w, "server error")
 			},
 			wantError: "download .*? error, code: 500",

pkg/helmexec/exec.go

@@ -113,7 +113,6 @@ func redactedURL(chart string) string {
 }
 
 // New for running helm commands
-// nolint: golint
 func New(helmBinary string, enableLiveOutput bool, logger *zap.SugaredLogger, kubeContext string, runner Runner) *execer {
 	// TODO: proper error handling
 	version, err := GetHelmVersion(helmBinary, runner)

pkg/helmexec/exec_test.go

@@ -33,7 +33,6 @@ func (mock *mockRunner) Execute(cmd string, args []string, env map[string]string
 	return mock.output, mock.err
 }
 
-// nolint: golint
 func MockExecer(logger *zap.SugaredLogger, kubeContext string) *execer {
 	execer := New("helm", false, logger, kubeContext, &mockRunner{})
 	return execer

pkg/state/chart_dependency.go

@@ -279,7 +279,6 @@ type chartDependencyManager struct {
 	writeFile func(string, []byte, os.FileMode) error
 }
 
-// nolint: golint
 func NewChartDependencyManager(name string, logger *zap.SugaredLogger, lockFilePath string) *chartDependencyManager {
 	return &chartDependencyManager{
 		Name:         name,

pkg/state/create.go

@@ -22,7 +22,6 @@ const (
 	DefaultHelmBinary = "helm"
 )
 
-// nolint: golint
 type StateLoadError struct {
 	msg   string
 	Cause error
@@ -306,12 +305,14 @@ func (c *StateCreator) scatterGatherEnvSecretFiles(st *HelmState, envSecretFiles
 					results <- secretResult{secret.id, nil, err, secret.path}
 					continue
 				}
+
 				// nolint: staticcheck
 				defer func() {
 					if err := c.fs.DeleteFile(decFile); err != nil {
 						c.logger.Warnf("removing decrypted file %s: %w", decFile, err)
 					}
 				}()
+
 				bytes, err := c.fs.ReadFile(decFile)
 				if err != nil {
 					results <- secretResult{secret.id, nil, fmt.Errorf("failed to load environment secrets file \"%s\": %v", secret.path, err), secret.path}

pkg/state/helmx.go

@@ -17,18 +17,16 @@ type Dependency struct {
 	Alias   string `yaml:"alias"`
 }
 
-// nolint: unparam
-func (st *HelmState) appendHelmXFlags(flags []string, release *ReleaseSpec) ([]string, error) {
+func (st *HelmState) appendHelmXFlags(flags []string, release *ReleaseSpec) []string {
 	for _, adopt := range release.Adopt {
 		flags = append(flags, "--adopt", adopt)
 	}
 
-	return flags, nil
+	return flags
 }
 
 // append post-renderer flags to helm flags
-// nolint: unparam
-func (st *HelmState) appendPostRenderFlags(flags []string, release *ReleaseSpec, helm helmexec.Interface) ([]string, error) {
+func (st *HelmState) appendPostRenderFlags(flags []string, release *ReleaseSpec, helm helmexec.Interface) []string {
 	if helm.IsHelm3() {
 		switch {
 		// helm.GetPostRenderer() comes from cmd flag.
@@ -40,7 +38,7 @@ func (st *HelmState) appendPostRenderFlags(flags []string, release *ReleaseSpec,
 			flags = append(flags, "--post-renderer", *st.HelmDefaults.PostRenderer)
 		}
 	}
-	return flags, nil
+	return flags
 }
 
 type Chartify struct {

pkg/state/state.go

@@ -1141,10 +1141,12 @@ func (st *HelmState) PrepareCharts(helm helmexec.Interface, dir string, concurre
 				isLocal := st.fs.DirectoryExistsAt(normalizeChart(st.basePath, chartName))
 
 				chartification, clean, err := st.PrepareChartify(helm, release, chartPath, workerIndex)
+
 				if !opts.SkipCleanup {
 					// nolint: staticcheck
 					defer clean()
 				}
+
 				if err != nil {
 					results <- &chartPrepareResult{err: err}
 					return
@@ -1256,7 +1258,6 @@ func (st *HelmState) PrepareCharts(helm helmexec.Interface, dir string, concurre
 						chartPath = filepath.Dir(fullChartPath)
 					}
 				}
-
 				results <- &chartPrepareResult{
 					releaseName:            release.Name,
 					chartName:              chartName,
@@ -2515,16 +2516,9 @@ func (st *HelmState) flagsForUpgrade(helm helmexec.Interface, release *ReleaseSp
 
 	flags = st.appendConnectionFlags(flags, helm, release)
 
-	var err error
-	flags, err = st.appendHelmXFlags(flags, release)
-	if err != nil {
-		return nil, nil, err
-	}
+	flags = st.appendHelmXFlags(flags, release)
 
-	flags, err = st.appendPostRenderFlags(flags, release, helm)
-	if err != nil {
-		return nil, nil, err
-	}
+	flags = st.appendPostRenderFlags(flags, release, helm)
 
 	common, clean, err := st.namespaceAndValuesFlags(helm, release, workerIndex)
 	if err != nil {
@@ -2545,18 +2539,11 @@ func (st *HelmState) flagsForTemplate(helm helmexec.Interface, release *ReleaseS
 		flags = st.chartVersionFlags(release)
 	}
 
-	var err error
-	flags, err = st.appendHelmXFlags(flags, release)
-	if err != nil {
-		return nil, nil, err
-	}
+	flags = st.appendHelmXFlags(flags, release)
 
 	flags = st.appendApiVersionsFlags(flags, release)
 
-	flags, err = st.appendPostRenderFlags(flags, release, helm)
-	if err != nil {
-		return nil, nil, err
-	}
+	flags = st.appendPostRenderFlags(flags, release, helm)
 
 	common, files, err := st.namespaceAndValuesFlags(helm, release, workerIndex)
 	if err != nil {
@@ -2593,16 +2580,9 @@ func (st *HelmState) flagsForDiff(helm helmexec.Interface, release *ReleaseSpec,
 
 	flags = st.appendConnectionFlags(flags, helm, release)
 
-	var err error
-	flags, err = st.appendHelmXFlags(flags, release)
-	if err != nil {
-		return nil, nil, err
-	}
+	flags = st.appendHelmXFlags(flags, release)
 
-	flags, err = st.appendPostRenderFlags(flags, release, helm)
-	if err != nil {
-		return nil, nil, err
-	}
+	flags = st.appendPostRenderFlags(flags, release, helm)
 
 	common, files, err := st.namespaceAndValuesFlags(helm, release, workerIndex)
 	if err != nil {
@@ -2660,12 +2640,7 @@ func (st *HelmState) flagsForLint(helm helmexec.Interface, release *ReleaseSpec,
 		return nil, files, err
 	}
 
-	flags, err = st.appendHelmXFlags(flags, release)
-	if err != nil {
-		return nil, files, err
-	}
-
-	return flags, files, nil
+	return st.appendHelmXFlags(flags, release), files, nil
 }
 
 func (st *HelmState) newReleaseTemplateData(release *ReleaseSpec) releaseTemplateData {

pkg/tmpl/text_renderer.go

@@ -14,7 +14,6 @@ type TextRenderer interface {
 	RenderTemplateText(text string) (string, error)
 }
 
-// nolint: golint
 func NewTextRenderer(fs *filesystem.FileSystem, basePath string, data interface{}) *templateTextRenderer {
 	return &templateTextRenderer{
 		ReadText: fs.ReadFile,

test/diff-yamls/diff-yamls.go

@@ -137,10 +137,9 @@ type meta struct {
 	namespace  string
 }
 
-// nolint: unparam
-func (res resource) getMeta() (meta, error) {
+func (res resource) getMeta() meta {
 	if len(res) == 0 {
-		return meta{}, nil
+		return meta{}
 	}
 	m := meta{}
 	apiVersion, _ := res["apiVersion"].(string)
@@ -152,7 +151,7 @@ func (res resource) getMeta() (meta, error) {
 	m.name = name
 	namespace, _ := metadata["namespace"].(string)
 	m.namespace = namespace
-	return m, nil
+	return m
 }
 
 func readManifest(path string) ([]resource, error) {
@@ -183,10 +182,8 @@ func readManifest(path string) ([]resource, error) {
 }
 
 func (res resource) getID() string {
-	meta, err := res.getMeta()
-	if err != nil {
-		return fmt.Sprintf("%v", res)
-	}
+	meta := res.getMeta()
+
 	ns := meta.namespace
 	if ns == "" {
 		ns = "~X"
@@ -229,10 +226,8 @@ func (ps *pairs) isSameResource(meta1, meta2 meta) bool {
 }
 
 func (ps *pairs) add(node resource, source diffSource) error {
-	nodeMeta, err := node.getMeta()
-	if err != nil {
-		return err
-	}
+	nodeMeta := node.getMeta()
+
 	for i := range ps.list {
 		p := ps.list[i]
 		if ps.isSameResource(p.meta, nodeMeta) {