Enable revive rule unused-parameter

.golangci.yml

@@ -151,8 +151,6 @@ linters:
         #- name: unexported-return
         - name: unreachable-code
         - name: unused-parameter
-          severity: warning
-          disabled: true
         #- name: unused-receiver
         #- name: var-declaration
         #- name: var-naming

config/http_config.go

@@ -742,7 +742,7 @@ func NewFileSecret(file string) *FileSecret {
 	return &FileSecret{file: file}
 }
 
-func (s *FileSecret) Fetch(ctx context.Context) (string, error) {
+func (s *FileSecret) Fetch(context.Context) (string, error) {
 	fileBytes, err := os.ReadFile(s.file)
 	if err != nil {
 		return "", fmt.Errorf("unable to read file %s: %w", s.file, err)

config/http_config_test.go

@@ -181,7 +181,7 @@ func TestNewClientFromConfig(t *testing.T) {
 					InsecureSkipVerify: true,
 				},
 			},
-			handler: func(w http.ResponseWriter, r *http.Request) {
+			handler: func(w http.ResponseWriter, _ *http.Request) {
 				fmt.Fprint(w, ExpectedMessage)
 			},
 		},
@@ -195,7 +195,7 @@ func TestNewClientFromConfig(t *testing.T) {
 					InsecureSkipVerify: false,
 				},
 			},
-			handler: func(w http.ResponseWriter, r *http.Request) {
+			handler: func(w http.ResponseWriter, _ *http.Request) {
 				fmt.Fprint(w, ExpectedMessage)
 			},
 		},
@@ -933,7 +933,7 @@ type secretManager struct {
 	data map[string]string
 }
 
-func (m *secretManager) Fetch(ctx context.Context, secretRef string) (string, error) {
+func (m *secretManager) Fetch(_ context.Context, secretRef string) (string, error) {
 	secretData, ok := m.data[secretRef]
 	if !ok {
 		return "", fmt.Errorf("unknown secret %s", secretRef)
@@ -1044,7 +1044,7 @@ func TestTLSRoundTripper(t *testing.T) {
 
 	ca, cert, key := filepath.Join(tmpDir, "ca"), filepath.Join(tmpDir, "cert"), filepath.Join(tmpDir, "key")
 
-	handler := func(w http.ResponseWriter, r *http.Request) {
+	handler := func(w http.ResponseWriter, _ *http.Request) {
 		fmt.Fprint(w, ExpectedMessage)
 	}
 	testServer, err := newTestServer(handler)
@@ -1162,7 +1162,7 @@ func TestTLSRoundTripper(t *testing.T) {
 }
 
 func TestTLSRoundTripper_Inline(t *testing.T) {
-	handler := func(w http.ResponseWriter, r *http.Request) {
+	handler := func(w http.ResponseWriter, _ *http.Request) {
 		fmt.Fprint(w, ExpectedMessage)
 	}
 	testServer, err := newTestServer(handler)
@@ -1284,7 +1284,7 @@ func TestTLSRoundTripperRaces(t *testing.T) {
 
 	ca, cert, key := filepath.Join(tmpDir, "ca"), filepath.Join(tmpDir, "cert"), filepath.Join(tmpDir, "key")
 
-	handler := func(w http.ResponseWriter, r *http.Request) {
+	handler := func(w http.ResponseWriter, _ *http.Request) {
 		fmt.Fprint(w, ExpectedMessage)
 	}
 	testServer, err := newTestServer(handler)
@@ -1402,7 +1402,7 @@ type roundTrip struct {
 	theError    error
 }
 
-func (rt *roundTrip) RoundTrip(r *http.Request) (*http.Response, error) {
+func (rt *roundTrip) RoundTrip(*http.Request) (*http.Response, error) {
 	return rt.theResponse, rt.theError
 }
 
@@ -1875,7 +1875,7 @@ func TestModifyTLSCertificates(t *testing.T) {
 	defer os.RemoveAll(tmpDir)
 	ca, cert, key := filepath.Join(tmpDir, "ca"), filepath.Join(tmpDir, "cert"), filepath.Join(tmpDir, "key")
 
-	handler := func(w http.ResponseWriter, r *http.Request) {
+	handler := func(w http.ResponseWriter, _ *http.Request) {
 		fmt.Fprint(w, ExpectedMessage)
 	}
 	testServer, err := newTestServer(handler)

expfmt/decode.go

@@ -135,7 +135,7 @@ type errDecoder struct {
 	err error
 }
 
-func (d *errDecoder) Decode(v *dto.MetricFamily) error {
+func (d *errDecoder) Decode(*dto.MetricFamily) error {
 	return d.err
 }
 

expfmt/text_parse_test.go

@@ -1048,6 +1048,6 @@ type errReader struct {
 	err error
 }
 
-func (r *errReader) Read(p []byte) (int, error) {
+func (r *errReader) Read([]byte) (int, error) {
 	return 0, r.err
 }

promslog/slog.go

@@ -147,7 +147,7 @@ type Config struct {
 }
 
 func newGoKitStyleReplaceAttrFunc(lvl *Level) func(groups []string, a slog.Attr) slog.Attr {
-	return func(groups []string, a slog.Attr) slog.Attr {
+	return func(_ []string, a slog.Attr) slog.Attr {
 		key := a.Key
 		switch key {
 		case slog.TimeKey, "ts":

route/route_test.go

@@ -37,7 +37,7 @@ func TestRedirect(t *testing.T) {
 
 func TestContext(t *testing.T) {
 	router := New()
-	router.Get("/test/:foo/", func(w http.ResponseWriter, r *http.Request) {
+	router.Get("/test/:foo/", func(_ http.ResponseWriter, r *http.Request) {
 		want := "bar"
 		got := Param(r.Context(), "foo")
 		require.Equalf(t, want, got, "Unexpected context value: want %q, got %q", want, got)
@@ -50,7 +50,7 @@ func TestContext(t *testing.T) {
 
 func TestContextWithValue(t *testing.T) {
 	router := New()
-	router.Get("/test/:foo/", func(w http.ResponseWriter, r *http.Request) {
+	router.Get("/test/:foo/", func(_ http.ResponseWriter, r *http.Request) {
 		want := "bar"
 		got := Param(r.Context(), "foo")
 		require.Equalf(t, want, got, "Unexpected context value: want %q, got %q", want, got)
@@ -79,7 +79,7 @@ func TestContextWithValue(t *testing.T) {
 
 func TestContextWithoutValue(t *testing.T) {
 	router := New()
-	router.Get("/test", func(w http.ResponseWriter, r *http.Request) {
+	router.Get("/test", func(_ http.ResponseWriter, r *http.Request) {
 		want := ""
 		got := Param(r.Context(), "foo")
 		require.Equalf(t, want, got, "Unexpected context value: want %q, got %q", want, got)
@@ -109,7 +109,7 @@ func TestInstrumentation(t *testing.T) {
 	}
 
 	for _, c := range cases {
-		c.router.Get("/foo", func(w http.ResponseWriter, r *http.Request) {})
+		c.router.Get("/foo", func(_ http.ResponseWriter, _ *http.Request) {})
 
 		r, err := http.NewRequest(http.MethodGet, "http://localhost:9090/foo", nil)
 		require.NoErrorf(t, err, "Error building test request: %s", err)
@@ -149,7 +149,7 @@ func TestInstrumentations(t *testing.T) {
 	}
 
 	for _, c := range cases {
-		c.router.Get("/foo", func(w http.ResponseWriter, r *http.Request) {})
+		c.router.Get("/foo", func(_ http.ResponseWriter, _ *http.Request) {})
 
 		r, err := http.NewRequest(http.MethodGet, "http://localhost:9090/foo", nil)
 		require.NoErrorf(t, err, "Error building test request: %s", err)

server/static_file_server_test.go

@@ -23,7 +23,7 @@ import (
 
 type dummyFileSystem struct{}
 
-func (fs dummyFileSystem) Open(path string) (http.File, error) {
+func (fs dummyFileSystem) Open(string) (http.File, error) {
 	return http.Dir(".").Open(".")
 }