linter feature code

- errcheck
- stylecheck
- nestif
- prealloc
- errorlint
- nonamedreturns
- gosec
- gosimple
- govet
- importas
- staticcheck
- unused

Signed-off-by: Jordan Keister <[email protected]>

Author: grokspawn

alpha/action/render.go

@@ -70,10 +70,13 @@ func (r Render) Run(ctx context.Context) (*declcfg.DeclarativeConfig, error) {
 		if err != nil {
 			return nil, fmt.Errorf("create registry: %v", err)
 		}
-		defer reg.Destroy()
+		defer func() {
+			_ = reg.Destroy()
+		}()
 		r.Registry = reg
 	}
 
+	// nolint:prealloc
 	var cfgs []declcfg.DeclarativeConfig
 	for _, ref := range r.Refs {
 		cfg, err := r.renderReference(ctx, ref)
@@ -123,6 +126,7 @@ func (r Render) renderReference(ctx context.Context, ref string) (*declcfg.Decla
 	if err != nil {
 		return r.imageToDeclcfg(ctx, ref)
 	}
+	// nolint:nestif
 	if stat.IsDir() {
 		dirEntries, err := os.ReadDir(ref)
 		if err != nil {
@@ -178,6 +182,7 @@ func (r Render) imageToDeclcfg(ctx context.Context, imageRef string) (*declcfg.D
 	}
 
 	var cfg *declcfg.DeclarativeConfig
+	// nolint:nestif
 	if dbFile, ok := labels[containertools.DbLocationLabel]; ok {
 		if !r.AllowedRefMask.Allowed(RefSqliteImage) {
 			return nil, fmt.Errorf("cannot render sqlite image: %w", ErrNotAllowed)
@@ -279,6 +284,7 @@ func populateDBRelatedImages(ctx context.Context, cfg *declcfg.DeclarativeConfig
 	}
 	defer rows.Close()
 
+	// nolint:staticcheck
 	images := map[string]sets.String{}
 	for rows.Next() {
 		var (
@@ -326,10 +332,10 @@ func bundleToDeclcfg(bundle *registry.Bundle) (*declcfg.Bundle, error) {
 		return nil, fmt.Errorf("get related images for bundle %q: %v", bundle.Name, err)
 	}
 
-	var csvJson []byte
+	var csvJSON []byte
 	for _, obj := range bundle.Objects {
 		if obj.GetKind() == "ClusterServiceVersion" {
-			csvJson, err = json.Marshal(obj)
+			csvJSON, err = json.Marshal(obj)
 			if err != nil {
 				return nil, fmt.Errorf("marshal CSV JSON for bundle %q: %v", bundle.Name, err)
 			}
@@ -344,7 +350,7 @@ func bundleToDeclcfg(bundle *registry.Bundle) (*declcfg.Bundle, error) {
 		Properties:    props,
 		RelatedImages: relatedImages,
 		Objects:       objs,
-		CsvJSON:       string(csvJson),
+		CsvJSON:       string(csvJSON),
 	}, nil
 }
 

alpha/declcfg/declcfg_to_model.go

@@ -245,6 +245,7 @@ func ConvertToModel(cfg DeclarativeConfig) (model.Model, error) {
 }
 
 func relatedImagesToModelRelatedImages(in []RelatedImage) []model.RelatedImage {
+	// nolint:prealloc
 	var out []model.RelatedImage
 	for _, p := range in {
 		out = append(out, model.RelatedImage{

alpha/declcfg/load.go

@@ -174,7 +174,7 @@ func sendPaths(ctx context.Context, root fs.FS, pathChan chan<- string) error {
 	})
 }
 
-func parseMetaPaths(ctx context.Context, root fs.FS, pathChan <-chan string, walkFn WalkMetasFSFunc, options LoadOptions) error {
+func parseMetaPaths(ctx context.Context, root fs.FS, pathChan <-chan string, walkFn WalkMetasFSFunc, _ LoadOptions) error {
 	for {
 		select {
 		case <-ctx.Done(): // don't block on receiving from pathChan
@@ -205,11 +205,11 @@ func readBundleObjects(b *Bundle) error {
 		if err := json.Unmarshal(props.Value, &obj); err != nil {
 			return fmt.Errorf("package %q, bundle %q: parse property at index %d as bundle object: %v", b.Package, b.Name, i, err)
 		}
-		objJson, err := yaml.ToJSON(obj.Data)
+		objJSON, err := yaml.ToJSON(obj.Data)
 		if err != nil {
 			return fmt.Errorf("package %q, bundle %q: convert bundle object property at index %d to JSON: %v", b.Package, b.Name, i, err)
 		}
-		b.Objects = append(b.Objects, string(objJson))
+		b.Objects = append(b.Objects, string(objJSON))
 	}
 	b.CsvJSON = extractCSV(b.Objects)
 	return nil

alpha/declcfg/model_to_declcfg.go

@@ -103,6 +103,7 @@ func traverseModelChannels(mpkg model.Package) ([]Channel, []Bundle) {
 		channels = append(channels, c)
 	}
 
+	// nolint:prealloc
 	var bundles []Bundle
 	for _, b := range bundleMap {
 		b.Properties = property.Deduplicate(b.Properties)
@@ -120,6 +121,7 @@ func traverseModelChannels(mpkg model.Package) ([]Channel, []Bundle) {
 }
 
 func ModelRelatedImagesToRelatedImages(relatedImages []model.RelatedImage) []RelatedImage {
+	// nolint:prealloc
 	var out []RelatedImage
 	for _, ri := range relatedImages {
 		out = append(out, RelatedImage{

alpha/declcfg/write.go

@@ -128,6 +128,7 @@ func (writer *MermaidWriter) WriteChannels(cfg DeclarativeConfig, out io.Writer)
 
 	for _, c := range cfg.Channels {
 		filteredChannel := writer.filterChannel(&c, versionMap, minVersion, minEdgePackage)
+		// nolint:nestif
 		if filteredChannel != nil {
 			pkgBuilder, ok := pkgs[c.Package]
 			if !ok {
@@ -154,26 +155,26 @@ func (writer *MermaidWriter) WriteChannels(cfg DeclarativeConfig, out io.Writer)
 						bundleDeprecation = ":::deprecated"
 					}
 
-					entryId := fmt.Sprintf("%s-%s", channelID, ce.Name)
-					pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]%s\n", entryId, ce.Name, bundleDeprecation))
+					entryID := fmt.Sprintf("%s-%s", channelID, ce.Name)
+					pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]%s\n", entryID, ce.Name, bundleDeprecation))
 
 					if len(ce.Replaces) > 0 {
-						replacesId := fmt.Sprintf("%s-%s", channelID, ce.Replaces)
-						pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]-- %s --> %s[%q]\n", replacesId, ce.Replaces, "replace", entryId, ce.Name))
+						replacesID := fmt.Sprintf("%s-%s", channelID, ce.Replaces)
+						pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]-- %s --> %s[%q]\n", replacesID, ce.Replaces, "replace", entryID, ce.Name))
 					}
 					if len(ce.Skips) > 0 {
 						for _, s := range ce.Skips {
-							skipsId := fmt.Sprintf("%s-%s", channelID, s)
-							pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]-- %s --> %s[%q]\n", skipsId, s, "skip", entryId, ce.Name))
+							skipsID := fmt.Sprintf("%s-%s", channelID, s)
+							pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]-- %s --> %s[%q]\n", skipsID, s, "skip", entryID, ce.Name))
 						}
 					}
 					if len(ce.SkipRange) > 0 {
 						skipRange, err := semver.ParseRange(ce.SkipRange)
 						if err == nil {
 							for _, edgeName := range filteredChannel.Entries {
 								if skipRange(versionMap[edgeName.Name]) {
-									skipRangeId := fmt.Sprintf("%s-%s", channelID, edgeName.Name)
-									pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]-- \"%s(%s)\" --> %s[%q]\n", skipRangeId, edgeName.Name, "skipRange", ce.SkipRange, entryId, ce.Name))
+									skipRangeID := fmt.Sprintf("%s-%s", channelID, edgeName.Name)
+									pkgBuilder.WriteString(fmt.Sprintf("      %s[%q]-- \"%s(%s)\" --> %s[%q]\n", skipRangeID, edgeName.Name, "skipRange", ce.SkipRange, entryID, ce.Name))
 								}
 							}
 						} else {
@@ -186,8 +187,8 @@ func (writer *MermaidWriter) WriteChannels(cfg DeclarativeConfig, out io.Writer)
 		}
 	}
 
-	out.Write([]byte("graph LR\n"))
-	out.Write([]byte(fmt.Sprintf("  classDef deprecated fill:#E8960F\n")))
+	_, _ = out.Write([]byte("graph LR\n"))
+	_, _ = out.Write([]byte("  classDef deprecated fill:#E8960F\n"))
 	pkgNames := []string{}
 	for pname := range pkgs {
 		pkgNames = append(pkgNames, pname)
@@ -196,19 +197,19 @@ func (writer *MermaidWriter) WriteChannels(cfg DeclarativeConfig, out io.Writer)
 		return pkgNames[i] < pkgNames[j]
 	})
 	for _, pkgName := range pkgNames {
-		out.Write([]byte(fmt.Sprintf("  %%%% package %q\n", pkgName)))
-		out.Write([]byte(fmt.Sprintf("  subgraph %q\n", pkgName)))
-		out.Write([]byte(pkgs[pkgName].String()))
-		out.Write([]byte("  end\n"))
+		_, _ = out.Write([]byte(fmt.Sprintf("  %%%% package %q\n", pkgName)))
+		_, _ = out.Write([]byte(fmt.Sprintf("  subgraph %q\n", pkgName)))
+		_, _ = out.Write([]byte(pkgs[pkgName].String()))
+		_, _ = out.Write([]byte("  end\n"))
 	}
 
 	if deprecatedPackage != "" {
-		out.Write([]byte(fmt.Sprintf("style %s fill:#989695\n", deprecatedPackage)))
+		_, _ = out.Write([]byte(fmt.Sprintf("style %s fill:#989695\n", deprecatedPackage)))
 	}
 
 	if len(deprecatedChannels) > 0 {
 		for _, deprecatedChannel := range deprecatedChannels {
-			out.Write([]byte(fmt.Sprintf("style %s fill:#DCD0FF\n", deprecatedChannel)))
+			_, _ = out.Write([]byte(fmt.Sprintf("style %s fill:#DCD0FF\n", deprecatedChannel)))
 		}
 	}
 
@@ -236,6 +237,7 @@ func (writer *MermaidWriter) filterChannel(c *Channel, versionMap map[string]sem
 	out := &Channel{Name: c.Name, Package: c.Package, Properties: c.Properties, Entries: []ChannelEntry{}}
 	for _, ce := range c.Entries {
 		filteredCe := ChannelEntry{Name: ce.Name}
+		// nolint:nestif
 		if writer.MinEdgeName == "" {
 			// no minimum-edge specified
 			filteredCe.SkipRange = ce.SkipRange
@@ -535,7 +537,7 @@ func writeFile(cfg DeclarativeConfig, filename string, writeFunc WriteFunc) erro
 	if err := writeFunc(cfg, buf); err != nil {
 		return fmt.Errorf("write to buffer for %q: %v", filename, err)
 	}
-	if err := os.WriteFile(filename, buf.Bytes(), 0666); err != nil {
+	if err := os.WriteFile(filename, buf.Bytes(), 0600); err != nil {
 		return fmt.Errorf("write file %q: %v", filename, err)
 	}
 	return nil

alpha/model/error.go

@@ -2,6 +2,7 @@ package model
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"strings"
 )
@@ -31,7 +32,7 @@ func (v *validationError) Error() string {
 
 func (v *validationError) errorPrefix(prefix []rune, last bool, seen []error) string {
 	for _, s := range seen {
-		if v == s {
+		if errors.Is(v, s) {
 			return ""
 		}
 	}
@@ -56,7 +57,9 @@ func (v *validationError) errorPrefix(prefix []rune, last bool, seen []error) st
 		} else {
 			subPrefix = append(subPrefix, []rune("├── ")...)
 		}
-		if verr, ok := serr.(*validationError); ok {
+
+		var verr *validationError
+		if errors.As(serr, &verr) {
 			errMsg.WriteString(verr.errorPrefix(subPrefix, subLast, seen))
 		} else {
 			errMsg.WriteString(fmt.Sprintf("%s%s\n", string(subPrefix), serr))

alpha/model/model.go

@@ -161,6 +161,7 @@ func (i *Icon) Validate() error {
 	return result.orNil()
 }
 
+// nolint:unused
 func (i *Icon) validateData() error {
 	if !filetype.IsImage(i.Data) {
 		return errors.New("icon data is not an image")

alpha/property/property.go

@@ -178,6 +178,7 @@ func Deduplicate(in []Property) []Property {
 	}
 
 	props := map[key]Property{}
+	// nolint:prealloc
 	var out []Property
 	for _, p := range in {
 		k := key{p.Type, string(p.Value)}

alpha/template/semver/semver.go

@@ -22,6 +22,7 @@ func (t Template) Render(ctx context.Context) (*declcfg.DeclarativeConfig, error
 		return nil, fmt.Errorf("render: unable to read file: %v", err)
 	}
 
+	// nolint:prealloc
 	var cfgs []declcfg.DeclarativeConfig
 
 	bundleDict := buildBundleList(*sv)
@@ -211,6 +212,7 @@ func (sv *semverTemplate) generateChannels(semverChannels *bundleVersions) []dec
 
 	// sort the channel archetypes in ascending order so we can traverse the bundles in order of
 	// their source channel's priority
+	// nolint:prealloc
 	var archetypesByPriority []channelArchetype
 	for k := range channelPriorities {
 		archetypesByPriority = append(archetypesByPriority, k)
@@ -370,7 +372,7 @@ func newPackage(name string) *declcfg.Package {
 func newChannel(pkgName string, chName string) *declcfg.Channel {
 	return &declcfg.Channel{
 		Schema:  "olm.channel",
-		Name:    string(chName),
+		Name:    chName,
 		Package: pkgName,
 		Entries: []declcfg.ChannelEntry{},
 	}
@@ -391,6 +393,7 @@ func getMinorVersion(v semver.Version) semver.Version {
 	}
 }
 
+// nolint:unused
 func getMajorVersion(v semver.Version) semver.Version {
 	return semver.Version{
 		Major: v.Major,

cmd/configmap-server/main.go

@@ -129,10 +129,12 @@ func runCmdFunc(cmd *cobra.Command, args []string) error {
 	}
 
 	var store registry.Query
+	// nolint:staticcheck
 	store, err = sqlite.NewSQLLiteQuerier(dbName)
 	if err != nil {
 		logger.WithError(err).Warnf("failed to load db")
 	}
+	// nolint:staticcheck
 	if store == nil {
 		store = registry.NewEmptyQuerier()
 	}