Enable the errname linter.

Signed-off-by: Mads Jensen <atombrella@users.noreply.github.com>

.golangci.yml

@@ -20,6 +20,7 @@ linters:
   enable:
     - depguard
     - dupl
+    - errname
     - gomodguard
     - govet
     - ineffassign

internal/chart/v3/lint/lint_test.go

@@ -234,7 +234,7 @@ func TestMalformedTemplate(t *testing.T) {
 	var values map[string]any
 	c := time.After(3 * time.Second)
 	ch := make(chan int, 1)
-	var m []support.Message
+	var m []support.MessageError
 	go func() {
 		m = RunAll(malformedTemplate, values, namespace).Messages
 		ch <- 1

internal/chart/v3/lint/support/message.go

@@ -35,27 +35,27 @@ var sev = []string{"UNKNOWN", "INFO", "WARNING", "ERROR"}
 
 // Linter encapsulates a linting run of a particular chart.
 type Linter struct {
-	Messages []Message
+	Messages []MessageError
 	// The highest severity of all the failing lint rules
 	HighestSeverity int
 	ChartDir        string
 }
 
 // Message describes an error encountered while linting.
-type Message struct {
+type MessageError struct {
 	// Severity is one of the *Sev constants
 	Severity int
 	Path     string
 	Err      error
 }
 
-func (m Message) Error() string {
+func (m MessageError) Error() string {
 	return fmt.Sprintf("[%s] %s: %s", sev[m.Severity], m.Path, m.Err.Error())
 }
 
 // NewMessage creates a new Message struct
-func NewMessage(severity int, path string, err error) Message {
-	return Message{Severity: severity, Path: path, Err: err}
+func NewMessage(severity int, path string, err error) MessageError {
+	return MessageError{Severity: severity, Path: path, Err: err}
 }
 
 // RunLinterRule returns true if the validation passed

internal/chart/v3/lint/support/message_test.go

@@ -62,17 +62,17 @@ func TestRunLinterRule(t *testing.T) {
 }
 
 func TestMessage(t *testing.T) {
-	m := Message{ErrorSev, "Chart.yaml", errors.New("Foo")}
+	m := MessageError{ErrorSev, "Chart.yaml", errors.New("Foo")}
 	if m.Error() != "[ERROR] Chart.yaml: Foo" {
 		t.Errorf("Unexpected output: %s", m.Error())
 	}
 
-	m = Message{WarningSev, "templates/", errors.New("Bar")}
+	m = MessageError{WarningSev, "templates/", errors.New("Bar")}
 	if m.Error() != "[WARNING] templates/: Bar" {
 		t.Errorf("Unexpected output: %s", m.Error())
 	}
 
-	m = Message{InfoSev, "templates/rc.yaml", errors.New("FooBar")}
+	m = MessageError{InfoSev, "templates/rc.yaml", errors.New("FooBar")}
 	if m.Error() != "[INFO] templates/rc.yaml: FooBar" {
 		t.Errorf("Unexpected output: %s", m.Error())
 	}

internal/chart/v3/util/dependencies.go

@@ -51,7 +51,7 @@ func processDependencyConditions(reqs []*chart.Dependency, cvals common.Values,
 						break
 					}
 					slog.Warn("returned non-bool value", "path", c, "chart", r.Name)
-				} else if _, ok := err.(common.ErrNoValue); !ok {
+				} else if _, ok := err.(common.NoValueError); !ok {
 					// this is a real error
 					slog.Warn("the method PathValue returned error", slog.Any("error", err))
 				}

internal/chart/v3/util/dependencies_test.go

@@ -252,10 +252,10 @@ func TestProcessDependencyImportValues(t *testing.T) {
 		t.Error("expect nil value not found but found it")
 	}
 	switch xerr := err.(type) {
-	case common.ErrNoValue:
+	case common.NoValueError:
 		// We found what we expected
 	default:
-		t.Errorf("expected an ErrNoValue but got %q instead", xerr)
+		t.Errorf("expected an NoValueErr but got %q instead", xerr)
 	}
 
 	c = loadChart(t, "testdata/subpop")

internal/chart/v3/util/save.go

@@ -250,7 +250,7 @@ func validateName(name string) error {
 	nname := filepath.Base(name)
 
 	if nname != name {
-		return common.ErrInvalidChartName{Name: name}
+		return common.InvalidChartNameError{Name: name}
 	}
 
 	return nil

pkg/action/lint.go

@@ -43,7 +43,7 @@ type Lint struct {
 // LintResult is the result of Lint
 type LintResult struct {
 	TotalChartsLinted int
-	Messages          []support.Message
+	Messages          []support.MessageError
 	Errors            []error
 }
 

pkg/action/uninstall.go

@@ -222,19 +222,19 @@ func (u *Uninstall) purgeReleases(rels ...*release.Release) error {
 	return nil
 }
 
-type joinedErrors struct {
+type joinedListError struct {
 	errs []error
 	sep  string
 }
 
 func joinErrors(errs []error, sep string) error {
-	return &joinedErrors{
+	return &joinedListError{
 		errs: errs,
 		sep:  sep,
 	}
 }
 
-func (e *joinedErrors) Error() string {
+func (e *joinedListError) Error() string {
 	errs := make([]string, 0, len(e.errs))
 	for _, err := range e.errs {
 		errs = append(errs, err.Error())
@@ -242,7 +242,7 @@ func (e *joinedErrors) Error() string {
 	return strings.Join(errs, e.sep)
 }
 
-func (e *joinedErrors) Unwrap() []error {
+func (e *joinedListError) Unwrap() []error {
 	return e.errs
 }
 

pkg/chart/common/errors.go

@@ -20,24 +20,24 @@ import (
 	"fmt"
 )
 
-// ErrNoTable indicates that a chart does not have a matching table.
-type ErrNoTable struct {
+// NoTableError indicates that a chart does not have a matching table.
+type NoTableError struct {
 	Key string
 }
 
-func (e ErrNoTable) Error() string { return fmt.Sprintf("%q is not a table", e.Key) }
+func (e NoTableError) Error() string { return fmt.Sprintf("%q is not a table", e.Key) }
 
-// ErrNoValue indicates that Values does not contain a key with a value
-type ErrNoValue struct {
+// NoValueError indicates that Values does not contain a key with a value
+type NoValueError struct {
 	Key string
 }
 
-func (e ErrNoValue) Error() string { return fmt.Sprintf("%q is not a value", e.Key) }
+func (e NoValueError) Error() string { return fmt.Sprintf("%q is not a value", e.Key) }
 
-type ErrInvalidChartName struct {
+type InvalidChartNameError struct {
 	Name string
 }
 
-func (e ErrInvalidChartName) Error() string {
+func (e InvalidChartNameError) Error() string {
 	return fmt.Sprintf("%q is not a valid chart name", e.Name)
 }

pkg/chart/common/errors_test.go

@@ -23,7 +23,7 @@ import (
 func TestErrorNoTableDoesNotPanic(t *testing.T) {
 	x := "empty"
 
-	y := ErrNoTable{x}
+	y := NoTableError{x}
 
 	t.Logf("error is: %s", y)
 }
@@ -31,7 +31,7 @@ func TestErrorNoTableDoesNotPanic(t *testing.T) {
 func TestErrorNoValueDoesNotPanic(t *testing.T) {
 	x := "empty"
 
-	y := ErrNoValue{x}
+	y := NoValueError{x}
 
 	t.Logf("error is: %s", y)
 }

pkg/chart/common/values.go

@@ -48,7 +48,7 @@ func (v Values) YAML() (string, error) {
 // The above will be evaluated as "The table bar inside the table
 // foo".
 //
-// An ErrNoTable is returned if the table does not exist.
+// An NoTableError is returned if the table does not exist.
 func (v Values) Table(name string) (Values, error) {
 	table := v
 	var err error
@@ -84,7 +84,7 @@ func (v Values) Encode(w io.Writer) error {
 func tableLookup(v Values, simple string) (Values, error) {
 	v2, ok := v[simple]
 	if !ok {
-		return v, ErrNoTable{simple}
+		return v, NoTableError{simple}
 	}
 	if vv, ok := v2.(map[string]interface{}); ok {
 		return vv, nil
@@ -97,7 +97,7 @@ func tableLookup(v Values, simple string) (Values, error) {
 		return vv, nil
 	}
 
-	return Values{}, ErrNoTable{simple}
+	return Values{}, NoTableError{simple}
 }
 
 // ReadValues will parse YAML byte data into a Values.
@@ -154,20 +154,20 @@ func (v Values) pathValue(path []string) (interface{}, error) {
 		if _, ok := v[path[0]]; ok && !istable(v[path[0]]) {
 			return v[path[0]], nil
 		}
-		return nil, ErrNoValue{path[0]}
+		return nil, NoValueError{path[0]}
 	}
 
 	key, path := path[len(path)-1], path[:len(path)-1]
 	// get our table for table path
 	t, err := v.Table(joinPath(path...))
 	if err != nil {
-		return nil, ErrNoValue{key}
+		return nil, NoValueError{key}
 	}
 	// check table for key and ensure value is not a table
 	if k, ok := t[key]; ok && !istable(k) {
 		return k, nil
 	}
-	return nil, ErrNoValue{key}
+	return nil, NoValueError{key}
 }
 
 func parsePath(key string) []string { return strings.Split(key, ".") }

pkg/chart/v2/lint/lint_test.go

@@ -238,7 +238,7 @@ func TestMalformedTemplate(t *testing.T) {
 	var values map[string]any
 	c := time.After(3 * time.Second)
 	ch := make(chan int, 1)
-	var m []support.Message
+	var m []support.MessageError
 	go func() {
 		m = RunAll(malformedTemplate, values, namespace).Messages
 		ch <- 1

pkg/chart/v2/lint/support/message.go

@@ -35,27 +35,27 @@ var sev = []string{"UNKNOWN", "INFO", "WARNING", "ERROR"}
 
 // Linter encapsulates a linting run of a particular chart.
 type Linter struct {
-	Messages []Message
+	Messages []MessageError
 	// The highest severity of all the failing lint rules
 	HighestSeverity int
 	ChartDir        string
 }
 
 // Message describes an error encountered while linting.
-type Message struct {
+type MessageError struct {
 	// Severity is one of the *Sev constants
 	Severity int
 	Path     string
 	Err      error
 }
 
-func (m Message) Error() string {
+func (m MessageError) Error() string {
 	return fmt.Sprintf("[%s] %s: %s", sev[m.Severity], m.Path, m.Err.Error())
 }
 
 // NewMessage creates a new Message struct
-func NewMessage(severity int, path string, err error) Message {
-	return Message{Severity: severity, Path: path, Err: err}
+func NewMessage(severity int, path string, err error) MessageError {
+	return MessageError{Severity: severity, Path: path, Err: err}
 }
 
 // RunLinterRule returns true if the validation passed

pkg/chart/v2/lint/support/message_test.go

@@ -62,17 +62,17 @@ func TestRunLinterRule(t *testing.T) {
 }
 
 func TestMessage(t *testing.T) {
-	m := Message{ErrorSev, "Chart.yaml", errors.New("Foo")}
+	m := MessageError{ErrorSev, "Chart.yaml", errors.New("Foo")}
 	if m.Error() != "[ERROR] Chart.yaml: Foo" {
 		t.Errorf("Unexpected output: %s", m.Error())
 	}
 
-	m = Message{WarningSev, "templates/", errors.New("Bar")}
+	m = MessageError{WarningSev, "templates/", errors.New("Bar")}
 	if m.Error() != "[WARNING] templates/: Bar" {
 		t.Errorf("Unexpected output: %s", m.Error())
 	}
 
-	m = Message{InfoSev, "templates/rc.yaml", errors.New("FooBar")}
+	m = MessageError{InfoSev, "templates/rc.yaml", errors.New("FooBar")}
 	if m.Error() != "[INFO] templates/rc.yaml: FooBar" {
 		t.Errorf("Unexpected output: %s", m.Error())
 	}

pkg/chart/v2/util/dependencies.go

@@ -51,7 +51,7 @@ func processDependencyConditions(reqs []*chart.Dependency, cvals common.Values,
 						break
 					}
 					slog.Warn("returned non-bool value", "path", c, "chart", r.Name)
-				} else if _, ok := err.(common.ErrNoValue); !ok {
+				} else if _, ok := err.(common.NoValueError); !ok {
 					// this is a real error
 					slog.Warn("the method PathValue returned error", slog.Any("error", err))
 				}

pkg/chart/v2/util/dependencies_test.go

@@ -252,10 +252,10 @@ func TestProcessDependencyImportValues(t *testing.T) {
 		t.Error("expect nil value not found but found it")
 	}
 	switch xerr := err.(type) {
-	case common.ErrNoValue:
+	case common.NoValueError:
 		// We found what we expected
 	default:
-		t.Errorf("expected an ErrNoValue but got %q instead", xerr)
+		t.Errorf("expected an NoValueErr but got %q instead", xerr)
 	}
 
 	c = loadChart(t, "testdata/subpop")

pkg/chart/v2/util/save.go

@@ -262,7 +262,7 @@ func validateName(name string) error {
 	nname := filepath.Base(name)
 
 	if nname != name {
-		return common.ErrInvalidChartName{Name: name}
+		return common.InvalidChartNameError{Name: name}
 	}
 
 	return nil

pkg/cmd/dependency_build.go

@@ -76,7 +76,7 @@ func newDependencyBuildCmd(out io.Writer) *cobra.Command {
 				man.Verify = downloader.VerifyIfPossible
 			}
 			err = man.Build()
-			if e, ok := err.(downloader.ErrRepoNotFound); ok {
+			if e, ok := err.(downloader.RepoNotFoundError); ok {
 				return fmt.Errorf("%s. Please add the missing repos via 'helm repo add'", e.Error())
 			}
 			return err

pkg/downloader/manager.go

@@ -45,14 +45,14 @@ import (
 	"helm.sh/helm/v4/pkg/repo/v1"
 )
 
-// ErrRepoNotFound indicates that chart repositories can't be found in local repo cache.
+// RepoNotFoundError indicates that chart repositories can't be found in local repo cache.
 // The value of Repos is missing repos.
-type ErrRepoNotFound struct {
+type RepoNotFoundError struct {
 	Repos []string
 }
 
 // Error implements the error interface.
-func (e ErrRepoNotFound) Error() string {
+func (e RepoNotFoundError) Error() string {
 	return fmt.Sprintf("no repository definition for %s", strings.Join(e.Repos, ", "))
 }
 
@@ -491,7 +491,7 @@ Loop:
 		missing = append(missing, dd.Repository)
 	}
 	if len(missing) > 0 {
-		return ErrRepoNotFound{missing}
+		return RepoNotFoundError{missing}
 	}
 	return nil
 }

pkg/downloader/manager_test.go

@@ -569,7 +569,7 @@ func TestErrRepoNotFound_Error(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			e := ErrRepoNotFound{
+			e := RepoNotFoundError{
 				Repos: tt.fields.Repos,
 			}
 			if got := e.Error(); got != tt.want {

pkg/kube/client.go

@@ -1247,19 +1247,19 @@ func scrubValidationError(err error) error {
 	return err
 }
 
-type joinedErrors struct {
+type joinedListError struct {
 	errs []error
 	sep  string
 }
 
 func joinErrors(errs []error, sep string) error {
-	return &joinedErrors{
+	return &joinedListError{
 		errs: errs,
 		sep:  sep,
 	}
 }
 
-func (e *joinedErrors) Error() string {
+func (e *joinedListError) Error() string {
 	errs := make([]string, 0, len(e.errs))
 	for _, err := range e.errs {
 		errs = append(errs, err.Error())
@@ -1267,6 +1267,6 @@ func (e *joinedErrors) Error() string {
 	return strings.Join(errs, e.sep)
 }
 
-func (e *joinedErrors) Unwrap() []error {
+func (e *joinedListError) Unwrap() []error {
 	return e.errs
 }