Upgrade golangci-lint to v1.60.1

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

.github/workflows/ci.yml

@@ -186,7 +186,7 @@ jobs:
         with:
           args: --verbose
           # Make sure to sync this with Makefile.common and scripts/golangci-lint.yml.
-          version: v1.59.1
+          version: v1.60.1
   fuzzing:
     uses: ./.github/workflows/fuzzing.yml
     if: github.event_name == 'pull_request'

Makefile.common

@@ -61,7 +61,7 @@ PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_
 SKIP_GOLANGCI_LINT :=
 GOLANGCI_LINT :=
 GOLANGCI_LINT_OPTS ?=
-GOLANGCI_LINT_VERSION ?= v1.59.1
+GOLANGCI_LINT_VERSION ?= v1.60.1
 # golangci-lint only supports linux, darwin and windows platforms on i386/amd64/arm64.
 # windows isn't included here because of the path separator being different.
 ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))

cmd/promtool/tsdb.go

@@ -866,16 +866,16 @@ func displayHistogram(dataType string, datas []int, total int) {
 	fmt.Println()
 }
 
-func generateBucket(min, max int) (start, end, step int) {
-	s := (max - min) / 10
+func generateBucket(minVal, maxVal int) (start, end, step int) {
+	s := (maxVal - minVal) / 10
 
 	step = 10
 	for step < s && step <= 10000 {
 		step *= 10
 	}
 
-	start = min - min%step
-	end = max - max%step + step
+	start = minVal - minVal%step
+	end = maxVal - maxVal%step + step
 
 	return
 }

discovery/eureka/client.go

@@ -97,7 +97,6 @@ func fetchApps(ctx context.Context, server string, client *http.Client) (*Applic
 		resp.Body.Close()
 	}()
 
-	//nolint:usestdlibvars
 	if resp.StatusCode/100 != 2 {
 		return nil, fmt.Errorf("non 2xx status '%d' response during eureka service discovery", resp.StatusCode)
 	}

discovery/hetzner/robot.go

@@ -87,7 +87,6 @@ func (d *robotDiscovery) refresh(context.Context) ([]*targetgroup.Group, error)
 		resp.Body.Close()
 	}()
 
-	//nolint:usestdlibvars
 	if resp.StatusCode/100 != 2 {
 		return nil, fmt.Errorf("non 2xx status '%d' response during hetzner service discovery with role robot", resp.StatusCode)
 	}

discovery/kubernetes/kubernetes_test.go

@@ -154,7 +154,7 @@ func (d k8sDiscoveryTest) Run(t *testing.T) {
 
 // readResultWithTimeout reads all targetgroups from channel with timeout.
 // It merges targetgroups by source and sends the result to result channel.
-func readResultWithTimeout(t *testing.T, ctx context.Context, ch <-chan []*targetgroup.Group, max int, stopAfter time.Duration, resChan chan<- map[string]*targetgroup.Group) {
+func readResultWithTimeout(t *testing.T, ctx context.Context, ch <-chan []*targetgroup.Group, maxGroups int, stopAfter time.Duration, resChan chan<- map[string]*targetgroup.Group) {
 	res := make(map[string]*targetgroup.Group)
 	timeout := time.After(stopAfter)
 Loop:
@@ -167,18 +167,18 @@ Loop:
 				}
 				res[tg.Source] = tg
 			}
-			if len(res) == max {
+			if len(res) == maxGroups {
 				// Reached max target groups we may get, break fast.
 				break Loop
 			}
 		case <-timeout:
 			// Because we use queue, an object that is created then
 			// deleted or updated may be processed only once.
 			// So possibly we may skip events, timed out here.
-			t.Logf("timed out, got %d (max: %d) items, some events are skipped", len(res), max)
+			t.Logf("timed out, got %d (max: %d) items, some events are skipped", len(res), maxGroups)
 			break Loop
 		case <-ctx.Done():
-			t.Logf("stopped, got %d (max: %d) items", len(res), max)
+			t.Logf("stopped, got %d (max: %d) items", len(res), maxGroups)
 			break Loop
 		}
 	}

notifier/notifier.go

@@ -674,7 +674,7 @@ func (n *Manager) sendOne(ctx context.Context, c *http.Client, url string, b []b
 	}()
 
 	// Any HTTP status 2xx is OK.
-	//nolint:usestdlibvars
+
 	if resp.StatusCode/100 != 2 {
 		return fmt.Errorf("bad response status %s", resp.Status)
 	}

promql/functions.go

@@ -467,15 +467,15 @@ func funcSortByLabelDesc(vals []parser.Value, args parser.Expressions, enh *Eval
 // === clamp(Vector parser.ValueTypeVector, min, max Scalar) (Vector, Annotations) ===
 func funcClamp(vals []parser.Value, args parser.Expressions, enh *EvalNodeHelper) (Vector, annotations.Annotations) {
 	vec := vals[0].(Vector)
-	min := vals[1].(Vector)[0].F
-	max := vals[2].(Vector)[0].F
-	if max < min {
+	minVal := vals[1].(Vector)[0].F
+	maxVal := vals[2].(Vector)[0].F
+	if maxVal < minVal {
 		return enh.Out, nil
 	}
 	for _, el := range vec {
 		enh.Out = append(enh.Out, Sample{
 			Metric: el.Metric.DropMetricName(),
-			F:      math.Max(min, math.Min(max, el.F)),
+			F:      math.Max(minVal, math.Min(maxVal, el.F)),
 		})
 	}
 	return enh.Out, nil
@@ -484,11 +484,11 @@ func funcClamp(vals []parser.Value, args parser.Expressions, enh *EvalNodeHelper
 // === clamp_max(Vector parser.ValueTypeVector, max Scalar) (Vector, Annotations) ===
 func funcClampMax(vals []parser.Value, args parser.Expressions, enh *EvalNodeHelper) (Vector, annotations.Annotations) {
 	vec := vals[0].(Vector)
-	max := vals[1].(Vector)[0].F
+	maxVal := vals[1].(Vector)[0].F
 	for _, el := range vec {
 		enh.Out = append(enh.Out, Sample{
 			Metric: el.Metric.DropMetricName(),
-			F:      math.Min(max, el.F),
+			F:      math.Min(maxVal, el.F),
 		})
 	}
 	return enh.Out, nil
@@ -497,11 +497,11 @@ func funcClampMax(vals []parser.Value, args parser.Expressions, enh *EvalNodeHel
 // === clamp_min(Vector parser.ValueTypeVector, min Scalar) (Vector, Annotations) ===
 func funcClampMin(vals []parser.Value, args parser.Expressions, enh *EvalNodeHelper) (Vector, annotations.Annotations) {
 	vec := vals[0].(Vector)
-	min := vals[1].(Vector)[0].F
+	minVal := vals[1].(Vector)[0].F
 	for _, el := range vec {
 		enh.Out = append(enh.Out, Sample{
 			Metric: el.Metric.DropMetricName(),
-			F:      math.Max(min, el.F),
+			F:      math.Max(minVal, el.F),
 		})
 	}
 	return enh.Out, nil
@@ -700,13 +700,13 @@ func funcMaxOverTime(vals []parser.Value, args parser.Expressions, enh *EvalNode
 		return enh.Out, nil
 	}
 	return aggrOverTime(vals, enh, func(s Series) float64 {
-		max := s.Floats[0].F
+		maxVal := s.Floats[0].F
 		for _, f := range s.Floats {
-			if f.F > max || math.IsNaN(max) {
-				max = f.F
+			if f.F > maxVal || math.IsNaN(maxVal) {
+				maxVal = f.F
 			}
 		}
-		return max
+		return maxVal
 	}), nil
 }
 
@@ -720,13 +720,13 @@ func funcMinOverTime(vals []parser.Value, args parser.Expressions, enh *EvalNode
 		return enh.Out, nil
 	}
 	return aggrOverTime(vals, enh, func(s Series) float64 {
-		min := s.Floats[0].F
+		minVal := s.Floats[0].F
 		for _, f := range s.Floats {
-			if f.F < min || math.IsNaN(min) {
-				min = f.F
+			if f.F < minVal || math.IsNaN(minVal) {
+				minVal = f.F
 			}
 		}
-		return min
+		return minVal
 	}), nil
 }
 

promql/parser/lex.go

@@ -727,23 +727,23 @@ func lexValueSequence(l *Lexer) stateFn {
 // was only modified to integrate with our lexer.
 func lexEscape(l *Lexer) stateFn {
 	var n int
-	var base, max uint32
+	var base, maxVal uint32
 
 	ch := l.next()
 	switch ch {
 	case 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', l.stringOpen:
 		return lexString
 	case '0', '1', '2', '3', '4', '5', '6', '7':
-		n, base, max = 3, 8, 255
+		n, base, maxVal = 3, 8, 255
 	case 'x':
 		ch = l.next()
-		n, base, max = 2, 16, 255
+		n, base, maxVal = 2, 16, 255
 	case 'u':
 		ch = l.next()
-		n, base, max = 4, 16, unicode.MaxRune
+		n, base, maxVal = 4, 16, unicode.MaxRune
 	case 'U':
 		ch = l.next()
-		n, base, max = 8, 16, unicode.MaxRune
+		n, base, maxVal = 8, 16, unicode.MaxRune
 	case eof:
 		l.errorf("escape sequence not terminated")
 		return lexString
@@ -772,7 +772,7 @@ func lexEscape(l *Lexer) stateFn {
 		}
 	}
 
-	if x > max || 0xD800 <= x && x < 0xE000 {
+	if x > maxVal || 0xD800 <= x && x < 0xE000 {
 		l.errorf("escape sequence is an invalid Unicode code point")
 	}
 	return lexString

scripts/golangci-lint.yml

@@ -36,4 +36,4 @@ jobs:
         uses: golangci/golangci-lint-action@aaa42aa0628b4ae2578232a66b541047968fac86 # v6.1.0
         with:
           args: --verbose
-          version: v1.59.1
+          version: v1.60.1

storage/buffer_test.go

@@ -96,10 +96,10 @@ func TestSampleRingMixed(t *testing.T) {
 
 	// With ValNone as the preferred type, nothing should be initialized.
 	r := newSampleRing(10, 2, chunkenc.ValNone)
-	require.Zero(t, len(r.fBuf))
-	require.Zero(t, len(r.hBuf))
-	require.Zero(t, len(r.fhBuf))
-	require.Zero(t, len(r.iBuf))
+	require.Empty(t, r.fBuf)
+	require.Empty(t, r.hBuf)
+	require.Empty(t, r.fhBuf)
+	require.Empty(t, r.iBuf)
 
 	// But then mixed adds should work as expected.
 	r.addF(fSample{t: 1, f: 3.14})
@@ -146,10 +146,10 @@ func TestSampleRingAtFloatHistogram(t *testing.T) {
 
 	// With ValNone as the preferred type, nothing should be initialized.
 	r := newSampleRing(10, 2, chunkenc.ValNone)
-	require.Zero(t, len(r.fBuf))
-	require.Zero(t, len(r.hBuf))
-	require.Zero(t, len(r.fhBuf))
-	require.Zero(t, len(r.iBuf))
+	require.Empty(t, r.fBuf)
+	require.Empty(t, r.hBuf)
+	require.Empty(t, r.fhBuf)
+	require.Empty(t, r.iBuf)
 
 	var (
 		h  *histogram.Histogram

storage/remote/client.go

@@ -287,7 +287,6 @@ func (c *Client) Store(ctx context.Context, req []byte, attempt int) (WriteRespo
 	// we can continue handling.
 	rs, _ := ParseWriteResponseStats(httpResp)
 
-	//nolint:usestdlibvars
 	if httpResp.StatusCode/100 == 2 {
 		return rs, nil
 	}
@@ -297,7 +296,6 @@ func (c *Client) Store(ctx context.Context, req []byte, attempt int) (WriteRespo
 	body, _ := io.ReadAll(io.LimitReader(httpResp.Body, maxErrMsgLen))
 	err = fmt.Errorf("server returned HTTP status %s: %s", httpResp.Status, body)
 
-	//nolint:usestdlibvars
 	if httpResp.StatusCode/100 == 5 ||
 		(c.retryOnRateLimit && httpResp.StatusCode == http.StatusTooManyRequests) {
 		return rs, RecoverableError{err, retryAfterDuration(httpResp.Header.Get("Retry-After"))}
@@ -382,7 +380,6 @@ func (c *Client) Read(ctx context.Context, query *prompb.Query) (*prompb.QueryRe
 		return nil, fmt.Errorf("error reading response. HTTP status code: %s: %w", httpResp.Status, err)
 	}
 
-	//nolint:usestdlibvars
 	if httpResp.StatusCode/100 != 2 {
 		return nil, fmt.Errorf("remote server %s returned HTTP status %s: %s", c.urlString, httpResp.Status, strings.TrimSpace(string(compressed)))
 	}

storage/remote/queue_manager.go

@@ -1522,27 +1522,27 @@ func (s *shards) runShard(ctx context.Context, shardID int, queue *queue) {
 	// Send batches of at most MaxSamplesPerSend samples to the remote storage.
 	// If we have fewer samples than that, flush them out after a deadline anyways.
 	var (
-		max = s.qm.cfg.MaxSamplesPerSend
+		maxCount = s.qm.cfg.MaxSamplesPerSend
 
 		pBuf    = proto.NewBuffer(nil)
 		pBufRaw []byte
 		buf     []byte
 	)
 	// TODO(@tpaschalis) Should we also raise the max if we have WAL metadata?
 	if s.qm.sendExemplars {
-		max += int(float64(max) * 0.1)
+		maxCount += int(float64(maxCount) * 0.1)
 	}
 
 	// TODO: Dry all of this, we should make an interface/generic for the timeseries type.
 	batchQueue := queue.Chan()
-	pendingData := make([]prompb.TimeSeries, max)
+	pendingData := make([]prompb.TimeSeries, maxCount)
 	for i := range pendingData {
 		pendingData[i].Samples = []prompb.Sample{{}}
 		if s.qm.sendExemplars {
 			pendingData[i].Exemplars = []prompb.Exemplar{{}}
 		}
 	}
-	pendingDataV2 := make([]writev2.TimeSeries, max)
+	pendingDataV2 := make([]writev2.TimeSeries, maxCount)
 	for i := range pendingDataV2 {
 		pendingDataV2[i].Samples = []writev2.Sample{{}}
 	}

storage/remote/write_handler_test.go

@@ -453,10 +453,10 @@ func TestRemoteWriteHandler_V2Message(t *testing.T) {
 				expectHeaderValue(t, 0, resp.Header.Get(rw20WrittenHistogramsHeader))
 				expectHeaderValue(t, 0, resp.Header.Get(rw20WrittenExemplarsHeader))
 
-				require.Empty(t, len(appendable.samples))
-				require.Empty(t, len(appendable.histograms))
-				require.Empty(t, len(appendable.exemplars))
-				require.Empty(t, len(appendable.metadata))
+				require.Empty(t, appendable.samples)
+				require.Empty(t, appendable.histograms)
+				require.Empty(t, appendable.exemplars)
+				require.Empty(t, appendable.metadata)
 				return
 			}
 

template/template.go

@@ -166,7 +166,7 @@ func NewTemplateExpander(
 				return html_template.HTML(text)
 			},
 			"match":     regexp.MatchString,
-			"title":     strings.Title, //nolint:staticcheck
+			"title":     strings.Title,
 			"toUpper":   strings.ToUpper,
 			"toLower":   strings.ToLower,
 			"graphLink": strutil.GraphLinkForExpression,

tsdb/chunks/queue_test.go

@@ -69,16 +69,16 @@ func TestQueuePushPopSingleGoroutine(t *testing.T) {
 	const maxSize = 500
 	const maxIters = 50
 
-	for max := 1; max < maxSize; max++ {
-		queue := newWriteJobQueue(max, 1+(r.Int()%max))
+	for maxCount := 1; maxCount < maxSize; maxCount++ {
+		queue := newWriteJobQueue(maxCount, 1+(r.Int()%maxCount))
 
 		elements := 0 // total elements in the queue
 		lastWriteID := 0
 		lastReadID := 0
 
 		for iter := 0; iter < maxIters; iter++ {
-			if elements < max {
-				toWrite := r.Int() % (max - elements)
+			if elements < maxCount {
+				toWrite := r.Int() % (maxCount - elements)
 				if toWrite == 0 {
 					toWrite = 1
 				}

tsdb/db.go

@@ -693,7 +693,7 @@ func (db *DBReadOnly) LastBlockID() (string, error) {
 		return "", err
 	}
 
-	max := uint64(0)
+	maxT := uint64(0)
 
 	lastBlockID := ""
 
@@ -705,8 +705,8 @@ func (db *DBReadOnly) LastBlockID() (string, error) {
 			continue // Not a block dir.
 		}
 		timestamp := ulidObj.Time()
-		if timestamp > max {
-			max = timestamp
+		if timestamp > maxT {
+			maxT = timestamp
 			lastBlockID = dirName
 		}
 	}
@@ -2316,13 +2316,13 @@ func blockDirs(dir string) ([]string, error) {
 	return dirs, nil
 }
 
-func exponential(d, min, max time.Duration) time.Duration {
+func exponential(d, minD, maxD time.Duration) time.Duration {
 	d *= 2
-	if d < min {
-		d = min
+	if d < minD {
+		d = minD
 	}
-	if d > max {
-		d = max
+	if d > maxD {
+		d = maxD
 	}
 	return d
 }