Address golint failures from revive

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

.github/workflows/golangci-lint.yml

@@ -7,6 +7,7 @@ on:
       - "**.go"
       - "scripts/errcheck_excludes.txt"
       - ".github/workflows/golangci-lint.yml"
+      - ".golangci.yml"
   pull_request:
     paths:
       - "go.sum"
@@ -14,6 +15,7 @@ on:
       - "**.go"
       - "scripts/errcheck_excludes.txt"
       - ".github/workflows/golangci-lint.yml"
+      - ".golangci.yml"
 
 jobs:
   golangci:

cmd/promtool/rules.go

@@ -170,7 +170,7 @@ func (importer *ruleImporter) importRule(ctx context.Context, ruleExpr, ruleName
 				}
 			}
 		default:
-			return errors.New(fmt.Sprintf("rule result is wrong type %s", val.Type().String()))
+			return fmt.Errorf("rule result is wrong type %s", val.Type().String())
 		}
 
 		if err := app.flushAndCommit(ctx); err != nil {

cmd/promtool/rules_test.go

@@ -233,6 +233,7 @@ func TestBackfillLabels(t *testing.T) {
 		},
 	}
 	ruleImporter, err := newTestRuleImporter(ctx, start, tmpDir, mockAPISamples, defaultBlockDuration)
+	require.NoError(t, err)
 
 	path := filepath.Join(tmpDir, "test.file")
 	recordingRules := `groups:

discovery/triton/triton.go

@@ -188,7 +188,7 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 	case "cn":
 		endpointFormat = "https://%s:%d/v%d/gz/discover"
 	default:
-		return nil, errors.New(fmt.Sprintf("unknown role '%s' in configuration", d.sdConfig.Role))
+		return nil, fmt.Errorf("unknown role '%s' in configuration", d.sdConfig.Role)
 	}
 	var endpoint = fmt.Sprintf(endpointFormat, d.sdConfig.Endpoint, d.sdConfig.Port, d.sdConfig.Version)
 	if len(d.sdConfig.Groups) > 0 {
@@ -223,7 +223,7 @@ func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
 	case "cn":
 		return d.processComputeNodeResponse(data, endpoint)
 	default:
-		return nil, errors.New(fmt.Sprintf("unknown role '%s' in configuration", d.sdConfig.Role))
+		return nil, fmt.Errorf("unknown role '%s' in configuration", d.sdConfig.Role)
 	}
 }
 

tsdb/errors/errors.go

@@ -24,7 +24,7 @@ import (
 type multiError []error
 
 // NewMulti returns multiError with provided errors added if not nil.
-func NewMulti(errs ...error) multiError { // nolint:golint
+func NewMulti(errs ...error) multiError { // nolint:revive
 	m := multiError{}
 	m.Add(errs...)
 	return m

tsdb/exemplar.go

@@ -284,7 +284,7 @@ func (ce *CircularExemplarStorage) Resize(l int64) int {
 		// This math is essentially looking at nextIndex, where we would write the next exemplar to,
 		// and find the index in the old exemplar buffer that we should start migrating exemplars from.
 		// This way we don't migrate exemplars that would just be overwritten when migrating later exemplars.
-		var startIndex int64 = (oldNextIndex - count + int64(len(oldBuffer))) % int64(len(oldBuffer))
+		var startIndex = (oldNextIndex - count + int64(len(oldBuffer))) % int64(len(oldBuffer))
 
 		for i := int64(0); i < count; i++ {
 			idx := (startIndex + i) % int64(len(oldBuffer))

tsdb/wal/wal.go

@@ -875,7 +875,7 @@ type segmentBufReader struct {
 	off  int // Offset of read data into current segment.
 }
 
-// nolint:golint // TODO: Consider exporting segmentBufReader
+// nolint:revive // TODO: Consider exporting segmentBufReader
 func NewSegmentBufReader(segs ...*Segment) *segmentBufReader {
 	return &segmentBufReader{
 		buf:  bufio.NewReaderSize(segs[0], 16*pageSize),
@@ -883,7 +883,7 @@ func NewSegmentBufReader(segs ...*Segment) *segmentBufReader {
 	}
 }
 
-// nolint:golint
+// nolint:revive
 func NewSegmentBufReaderWithOffset(offset int, segs ...*Segment) (sbr *segmentBufReader, err error) {
 	if offset == 0 {
 		return NewSegmentBufReader(segs...), nil