Updates to latest actions and fixes golangci-lint drift

.github/workflows/ci.yml

@@ -10,8 +10,6 @@ on:
 
 jobs:
   "CI":
-    env:
-      GO111MODULE: on
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -25,17 +23,17 @@ jobs:
     steps:
       # Set fetch-depth: 0 to fetch commit history and tags for use in version calculation
       - name: Check out code
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Setup go
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}
 
       - name: Lint files
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v4
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
           version: latest
@@ -46,7 +44,7 @@ jobs:
           CGO_ENABLED: 1
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
         with:

.golangci.yml

@@ -1,6 +1,8 @@
 run:
-  deadline: 5m
-  skip-dirs:
+  timeout: 5m
+
+issues:
+  exclude-dirs:
     - zipkin_proto3
 
 linters:
@@ -16,6 +18,7 @@ linters:
     - lll
     - misspell
     - nakedret
+    - revive
     - unparam
     - unused
 
@@ -26,5 +29,5 @@ linters-settings:
     line-length: 170
   gocyclo:
     min-complexity: 20
-  golint:
-    min-confidence: 0.85
+  revive:
+    confidence: 0.85

middleware/http/server_test.go

@@ -31,7 +31,7 @@ var (
 )
 
 func httpHandler(code int, headers http.Header, body *bytes.Buffer) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, _ *http.Request) {
 		w.WriteHeader(code)
 		for key, value := range headers {
 			w.Header().Add(key, value[0])
@@ -221,9 +221,9 @@ func TestHTTPRequestSampler(t *testing.T) {
 
 	samplers := []func(r *http.Request) *bool{
 		nil,
-		func(r *http.Request) *bool { return mw.Sample() },
-		func(r *http.Request) *bool { return mw.Discard() },
-		func(r *http.Request) *bool { return nil },
+		func(*http.Request) *bool { return mw.Sample() },
+		func(*http.Request) *bool { return mw.Discard() },
+		func(*http.Request) *bool { return nil },
 	}
 
 	for idx, sampler := range samplers {

middleware/http/transport_test.go

@@ -44,7 +44,7 @@ func TestRoundTripErrHandlingForRoundTripError(t *testing.T) {
 	req, _ := http.NewRequest("GET", "localhost", nil)
 	tr, _ := NewTransport(
 		tracer,
-		TransportErrHandler(func(_ zipkin.Span, err error, statusCode int) {
+		TransportErrHandler(func(_ zipkin.Span, err error, _ int) {
 			if want, have := expectedErr, err; want != have {
 				t.Errorf("unexpected error, want %q, have %q", want, have)
 			}
@@ -81,7 +81,7 @@ func TestRoundTripErrHandlingForStatusCode(t *testing.T) {
 	}
 
 	for _, tc := range tcs {
-		srv := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
+		srv := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, _ *http.Request) {
 			rw.WriteHeader(tc.actualStatusCode)
 		}))
 
@@ -92,7 +92,7 @@ func TestRoundTripErrHandlingForStatusCode(t *testing.T) {
 		req, _ := http.NewRequest("GET", srv.URL, nil)
 		tr, _ := NewTransport(
 			tracer,
-			TransportErrHandler(func(_ zipkin.Span, err error, statusCode int) {
+			TransportErrHandler(func(_ zipkin.Span, _ error, statusCode int) {
 				if want, have := tc.expectedError, statusCode; want != 0 && want != have {
 					t.Errorf("unexpected status code, want %d, have %d", want, have)
 				}
@@ -163,27 +163,27 @@ func TestTransportRequestSamplerOverridesSamplingFromContext(t *testing.T) {
 		// Test RequestSampler override sample -> no sample
 		{
 			Sampler:          zipkin.AlwaysSample,
-			RequestSampler:   func(_ *http.Request) *bool { return Discard() },
+			RequestSampler:   func(*http.Request) *bool { return Discard() },
 			ExpectedSampling: "0",
 		},
 		// Test RequestSampler override no sample -> sample
 		{
 			Sampler:          zipkin.NeverSample,
-			RequestSampler:   func(_ *http.Request) *bool { return Sample() },
+			RequestSampler:   func(*http.Request) *bool { return Sample() },
 			ExpectedSampling: "1",
 		},
 		// Test RequestSampler pass through of sampled decision
 		{
 			Sampler: zipkin.AlwaysSample,
-			RequestSampler: func(r *http.Request) *bool {
+			RequestSampler: func(*http.Request) *bool {
 				return nil
 			},
 			ExpectedSampling: "1",
 		},
 		// Test RequestSampler pass through of not sampled decision
 		{
 			Sampler: zipkin.NeverSample,
-			RequestSampler: func(r *http.Request) *bool {
+			RequestSampler: func(*http.Request) *bool {
 				return nil
 			},
 			ExpectedSampling: "0",

reporter/http/http_test.go

@@ -53,7 +53,7 @@ func generateSpans(n int) []*model.SpanModel {
 
 func newTestServer(t *testing.T, spans []*model.SpanModel, serializer reporter.SpanSerializer, onReceive func(int)) *httptest.Server {
 	sofar := 0
-	return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	return httptest.NewServer(http.HandlerFunc(func(_ http.ResponseWriter, r *http.Request) {
 		if r.Method != "POST" {
 			t.Errorf("expected 'POST' request, got '%s'", r.Method)
 		}
@@ -179,7 +179,7 @@ func TestSpanCustomHeaders(t *testing.T) {
 		},
 	}
 	var haveHeaders http.Header
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	ts := httptest.NewServer(http.HandlerFunc(func(_ http.ResponseWriter, r *http.Request) {
 		haveHeaders = r.Header
 	}))
 	defer ts.Close()
@@ -207,7 +207,7 @@ func TestB3SamplingHeader(t *testing.T) {
 	serializer := reporter.JSONSerializer{}
 
 	var haveHeaders map[string][]string
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	ts := httptest.NewServer(http.HandlerFunc(func(_ http.ResponseWriter, r *http.Request) {
 		haveHeaders = r.Header
 	}))
 	defer ts.Close()

span_options.go

@@ -26,7 +26,7 @@ type SpanOption func(t *Tracer, s *spanImpl)
 
 // Kind sets the kind of the span being created.
 func Kind(kind model.Kind) SpanOption {
-	return func(t *Tracer, s *spanImpl) {
+	return func(_ *Tracer, s *spanImpl) {
 		s.Kind = kind
 	}
 }
@@ -54,22 +54,22 @@ func Parent(sc model.SpanContext) SpanOption {
 
 // StartTime uses a given start time for the span being created.
 func StartTime(start time.Time) SpanOption {
-	return func(t *Tracer, s *spanImpl) {
+	return func(_ *Tracer, s *spanImpl) {
 		s.Timestamp = start
 	}
 }
 
 // RemoteEndpoint sets the remote endpoint of the span being created.
 func RemoteEndpoint(e *model.Endpoint) SpanOption {
-	return func(t *Tracer, s *spanImpl) {
+	return func(_ *Tracer, s *spanImpl) {
 		s.RemoteEndpoint = e
 	}
 }
 
 // Tags sets initial tags for the span being created. If default tracer tags
 // are present they will be overwritten on key collisions.
 func Tags(tags map[string]string) SpanOption {
-	return func(t *Tracer, s *spanImpl) {
+	return func(_ *Tracer, s *spanImpl) {
 		for k, v := range tags {
 			s.Tags[k] = v
 		}
@@ -82,7 +82,7 @@ func Tags(tags map[string]string) SpanOption {
 // This is available if late tag data is expected to be only available after the
 // required finish time of the Span.
 func FlushOnFinish(b bool) SpanOption {
-	return func(t *Tracer, s *spanImpl) {
+	return func(_ *Tracer, s *spanImpl) {
 		s.flushOnFinish = b
 	}
 }