chore: enable err-error and errorf rules from perfsprint linter

.golangci.yml

@@ -18,6 +18,8 @@ issues:
       text: "exitAfterDefer"
     - linters: [gocritic]
       text: "appendAssign"
+    - linters:  [perfsprint]
+      text: "fmt.Sprintf can be replaced"
   exclude-dirs-use-default: false
   exclude-dirs:
     - mocks
@@ -96,6 +98,9 @@ linters:
     # Reports ill-formed or insufficient nolint directives.
     - nolintlint
 
+    # Checks that fmt.Sprintf can be replaced with a faster alternative.
+    - perfsprint
+
     # Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint.
     - revive
 
@@ -153,6 +158,17 @@ linters-settings:
       - fieldalignment
       # Disable shadow
       - shadow
+  perfsprint:
+    # Optimizes even if it requires an int or uint type cast.
+    int-conversion: false
+    # Optimizes into `err.Error()` even if it is only equivalent for non-nil errors.
+    err-error: true
+    # Optimizes `fmt.Errorf`.
+    errorf: true
+    # Optimizes `fmt.Sprintf` with only one argument.
+    sprintf1: false
+    # Optimizes into strings concatenation.
+    strconcat: false
   revive:
       ignore-generated-header: true
       severity: error

cmd/anonymizer/app/uiconv/reader.go

@@ -6,6 +6,7 @@ package uiconv
 import (
 	"bufio"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"os"
 
@@ -14,7 +15,7 @@ import (
 	uimodel "github.com/jaegertracing/jaeger/model/json"
 )
 
-var errNoMoreSpans = fmt.Errorf("no more spans")
+var errNoMoreSpans = errors.New("no more spans")
 
 // spanReader loads previously captured spans from a file.
 type spanReader struct {
@@ -53,7 +54,7 @@ func (r *spanReader) NextSpan() (*uimodel.Span, error) {
 		}
 		if b != '[' {
 			r.eofReached = true
-			return nil, fmt.Errorf("file must begin with '['")
+			return nil, errors.New("file must begin with '['")
 		}
 	}
 	s, err := r.reader.ReadString('\n')

cmd/collector/app/handler/http_thrift_handler_test.go

@@ -7,7 +7,7 @@ package handler
 import (
 	"bytes"
 	"context"
-	"fmt"
+	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -79,7 +79,7 @@ func TestThriftFormat(t *testing.T) {
 	assert.EqualValues(t, http.StatusAccepted, statusCode)
 	assert.EqualValues(t, "", resBodyStr)
 
-	handler.jaegerBatchesHandler.(*mockJaegerHandler).err = fmt.Errorf("Bad times ahead")
+	handler.jaegerBatchesHandler.(*mockJaegerHandler).err = errors.New("Bad times ahead")
 	statusCode, resBodyStr, err = postBytes("application/vnd.apache.thrift.binary", server.URL+`/api/traces`, someBytes)
 	require.NoError(t, err)
 	assert.EqualValues(t, http.StatusInternalServerError, statusCode)
@@ -161,7 +161,7 @@ func TestCannotReadBodyFromRequest(t *testing.T) {
 type errReader struct{}
 
 func (*errReader) Read([]byte) (int, error) {
-	return 0, fmt.Errorf("Simulated error reading body")
+	return 0, errors.New("Simulated error reading body")
 }
 
 type dummyResponseWriter struct {

cmd/collector/app/span_processor_test.go

@@ -6,6 +6,7 @@ package app
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"reflect"
@@ -250,7 +251,7 @@ func TestSpanProcessor(t *testing.T) {
 func TestSpanProcessorErrors(t *testing.T) {
 	logger, logBuf := testutils.NewLogger()
 	w := &fakeSpanWriter{
-		err: fmt.Errorf("some-error"),
+		err: errors.New("some-error"),
 	}
 	mb := metricstest.NewFactory(time.Hour)
 	defer mb.Backend.Stop()

cmd/es-index-cleaner/main.go

@@ -5,6 +5,7 @@ package main
 
 import (
 	"encoding/base64"
+	"errors"
 	"fmt"
 	"log"
 	"net/http"
@@ -33,7 +34,7 @@ func main() {
 		Long:  "Jaeger es-index-cleaner removes Jaeger indices",
 		RunE: func(_ *cobra.Command, args []string) error {
 			if len(args) != 2 {
-				return fmt.Errorf("wrong number of arguments")
+				return errors.New("wrong number of arguments")
 			}
 			numOfDays, err := strconv.Atoi(args[0])
 			if err != nil {

cmd/es-rollover/app/init/action.go

@@ -49,7 +49,7 @@ func (c Action) Do() error {
 	}
 	if c.Config.UseILM {
 		if version < ilmVersionSupport {
-			return fmt.Errorf("ILM is supported only for ES version 7+")
+			return errors.New("ILM is supported only for ES version 7+")
 		}
 		policyExist, err := c.ILMClient.Exists(c.Config.ILMPolicyName)
 		if err != nil {

cmd/jaeger/internal/extension/jaegerquery/server_test.go

@@ -5,6 +5,7 @@ package jaegerquery
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net/http"
 	"testing"
@@ -42,28 +43,28 @@ type fakeFactory struct {
 
 func (ff fakeFactory) CreateDependencyReader() (dependencystore.Reader, error) {
 	if ff.name == "need-dependency-reader-error" {
-		return nil, fmt.Errorf("test-error")
+		return nil, errors.New("test-error")
 	}
 	return &depsmocks.Reader{}, nil
 }
 
 func (ff fakeFactory) CreateSpanReader() (spanstore.Reader, error) {
 	if ff.name == "need-span-reader-error" {
-		return nil, fmt.Errorf("test-error")
+		return nil, errors.New("test-error")
 	}
 	return &spanstoremocks.Reader{}, nil
 }
 
 func (ff fakeFactory) CreateSpanWriter() (spanstore.Writer, error) {
 	if ff.name == "need-span-writer-error" {
-		return nil, fmt.Errorf("test-error")
+		return nil, errors.New("test-error")
 	}
 	return &spanstoremocks.Writer{}, nil
 }
 
 func (ff fakeFactory) Initialize(metrics.Factory, *zap.Logger) error {
 	if ff.name == "need-initialize-error" {
-		return fmt.Errorf("test-error")
+		return errors.New("test-error")
 	}
 	return nil
 }
@@ -75,14 +76,14 @@ type fakeMetricsFactory struct {
 // Initialize implements storage.MetricsFactory.
 func (fmf fakeMetricsFactory) Initialize(*zap.Logger) error {
 	if fmf.name == "need-initialize-error" {
-		return fmt.Errorf("test-error")
+		return errors.New("test-error")
 	}
 	return nil
 }
 
 func (fmf fakeMetricsFactory) CreateMetricsReader() (metricsstore.Reader, error) {
 	if fmf.name == "need-metrics-reader-error" {
-		return nil, fmt.Errorf("test-error")
+		return nil, errors.New("test-error")
 	}
 	return &metricsstoremocks.Reader{}, nil
 }

cmd/jaeger/internal/extension/jaegerstorage/config.go

@@ -4,6 +4,7 @@
 package jaegerstorage
 
 import (
+	"errors"
 	"fmt"
 	"reflect"
 	"time"
@@ -96,7 +97,7 @@ func (cfg *Backend) Unmarshal(conf *confmap.Conf) error {
 
 func (cfg *Config) Validate() error {
 	if len(cfg.Backends) == 0 {
-		return fmt.Errorf("at least one storage is required")
+		return errors.New("at least one storage is required")
 	}
 	for name, b := range cfg.Backends {
 		empty := Backend{}

cmd/jaeger/internal/extension/jaegerstorage/extension_test.go

@@ -6,7 +6,7 @@ package jaegerstorage
 import (
 	"context"
 	"encoding/json"
-	"fmt"
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -88,7 +88,7 @@ func TestStorageExtensionType(t *testing.T) {
 }
 
 func TestStorageFactoryBadShutdownError(t *testing.T) {
-	shutdownError := fmt.Errorf("shutdown error")
+	shutdownError := errors.New("shutdown error")
 	ext := storageExt{
 		factories: map[string]storage.Factory{
 			"foo": errorFactory{closeErr: shutdownError},

cmd/jaeger/internal/integration/storagecleaner/extension_test.go

@@ -5,6 +5,7 @@ package storagecleaner
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net/http"
 	"sync/atomic"
@@ -78,7 +79,7 @@ func TestStorageCleanerExtension(t *testing.T) {
 		},
 		{
 			name:    "good storage with error",
-			factory: &PurgerFactory{err: fmt.Errorf("error")},
+			factory: &PurgerFactory{err: errors.New("error")},
 			status:  http.StatusInternalServerError,
 		},
 		{

cmd/query/app/apiv3/grpc_handler_test.go

@@ -5,7 +5,7 @@ package apiv3
 
 import (
 	"context"
-	"fmt"
+	"errors"
 	"net"
 	"testing"
 
@@ -105,7 +105,7 @@ func TestGetTrace(t *testing.T) {
 func TestGetTraceStorageError(t *testing.T) {
 	tsc := newTestServerClient(t)
 	tsc.reader.On("GetTrace", matchContext, matchTraceID).Return(
-		nil, fmt.Errorf("storage_error")).Once()
+		nil, errors.New("storage_error")).Once()
 
 	getTraceStream, err := tsc.client.GetTrace(context.Background(), &api_v3.GetTraceRequest{
 		TraceId: "156",
@@ -186,7 +186,7 @@ func TestFindTracesQueryNil(t *testing.T) {
 func TestFindTracesStorageError(t *testing.T) {
 	tsc := newTestServerClient(t)
 	tsc.reader.On("FindTraces", matchContext, mock.AnythingOfType("*spanstore.TraceQueryParameters")).Return(
-		nil, fmt.Errorf("storage_error"), nil).Once()
+		nil, errors.New("storage_error"), nil).Once()
 
 	responseStream, err := tsc.client.FindTraces(context.Background(), &api_v3.FindTracesRequest{
 		Query: &api_v3.TraceQueryParameters{
@@ -215,7 +215,7 @@ func TestGetServices(t *testing.T) {
 func TestGetServicesStorageError(t *testing.T) {
 	tsc := newTestServerClient(t)
 	tsc.reader.On("GetServices", matchContext).Return(
-		nil, fmt.Errorf("storage_error")).Once()
+		nil, errors.New("storage_error")).Once()
 
 	response, err := tsc.client.GetServices(context.Background(), &api_v3.GetServicesRequest{})
 	require.ErrorContains(t, err, "storage_error")
@@ -243,7 +243,7 @@ func TestGetOperations(t *testing.T) {
 func TestGetOperationsStorageError(t *testing.T) {
 	tsc := newTestServerClient(t)
 	tsc.reader.On("GetOperations", matchContext, mock.AnythingOfType("spanstore.OperationQueryParameters")).Return(
-		nil, fmt.Errorf("storage_error")).Once()
+		nil, errors.New("storage_error")).Once()
 
 	response, err := tsc.client.GetOperations(context.Background(), &api_v3.GetOperationsRequest{})
 	require.ErrorContains(t, err, "storage_error")

cmd/query/app/flags.go

@@ -161,7 +161,7 @@ func stringSliceAsHeader(slice []string) (http.Header, error) {
 
 	header, err := tp.ReadMIMEHeader()
 	if err != nil && !errors.Is(err, io.EOF) {
-		return nil, fmt.Errorf("failed to parse headers")
+		return nil, errors.New("failed to parse headers")
 	}
 
 	return http.Header(header), nil

cmd/query/app/grpc_handler_test.go

@@ -7,7 +7,6 @@ package app
 import (
 	"context"
 	"errors"
-	"fmt"
 	"net"
 	"testing"
 	"time"
@@ -407,7 +406,7 @@ func TestFindTracesMissingQuery_GRPC(t *testing.T) {
 
 func TestFindTracesFailure_GRPC(t *testing.T) {
 	withServerAndClient(t, func(server *grpcServer, client *grpcClient) {
-		mockErrorGRPC := fmt.Errorf("whatsamattayou")
+		mockErrorGRPC := errors.New("whatsamattayou")
 
 		server.spanReader.On("FindTraces", mock.AnythingOfType("*context.valueCtx"), mock.AnythingOfType("*spanstore.TraceQueryParameters")).
 			Return(nil, mockErrorGRPC).Once()

cmd/query/app/http_handler_test.go

@@ -214,7 +214,7 @@ func TestLogOnServerError(t *testing.T) {
 type httpResponseErrWriter struct{}
 
 func (*httpResponseErrWriter) Write([]byte) (int, error) {
-	return 0, fmt.Errorf("failed to write")
+	return 0, errors.New("failed to write")
 }
 func (*httpResponseErrWriter) WriteHeader(int /* statusCode */) {}
 func (*httpResponseErrWriter) Header() http.Header {
@@ -468,7 +468,7 @@ func TestSearchModelConversionFailure(t *testing.T) {
 func TestSearchDBFailure(t *testing.T) {
 	ts := initializeTestServer(t)
 	ts.spanReader.On("FindTraces", mock.AnythingOfType("*context.valueCtx"), mock.AnythingOfType("*spanstore.TraceQueryParameters")).
-		Return(nil, fmt.Errorf("whatsamattayou")).Once()
+		Return(nil, errors.New("whatsamattayou")).Once()
 
 	var response structuredResponse
 	err := getJSON(ts.server.URL+`/api/traces?service=service&start=0&end=0&operation=operation&limit=200&minDuration=20ms`, &response)

cmd/query/app/static_handler_test.go

@@ -6,6 +6,7 @@ package app
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -309,7 +310,7 @@ type fakeFile struct {
 }
 
 func (*fakeFile) Read([]byte) (n int, err error) {
-	return 0, fmt.Errorf("read error")
+	return 0, errors.New("read error")
 }
 
 func TestLoadIndexHTMLReadError(t *testing.T) {

crossdock/services/tracehandler.go

@@ -174,7 +174,7 @@ func validateAdaptiveSamplingTraces(expected *traceRequest, actual []*ui.Trace)
 			return fmt.Errorf("%s tag value should be '%s'", samplerTypeKey, jaeger.SamplerTypeProbabilistic)
 		}
 		if isDefaultProbability(probability) {
-			return fmt.Errorf("adaptive sampling probability not used")
+			return errors.New("adaptive sampling probability not used")
 		}
 	}
 	return nil
@@ -201,7 +201,7 @@ func (h *TraceHandler) createAndRetrieveTraces(service string, request *traceReq
 	}
 	traces := h.getTraces(service, request.Operation, request.Tags)
 	if len(traces) == 0 {
-		return nil, fmt.Errorf("could not retrieve traces from query service")
+		return nil, errors.New("could not retrieve traces from query service")
 	}
 	return traces, nil
 }
@@ -261,7 +261,7 @@ func validateTraces(expected *traceRequest, actual []*ui.Trace) error {
 		}
 		tags := convertTagsIntoMap(trace.Spans[0].Tags)
 		if !expectedTagsExist(expected.Tags, tags) {
-			return fmt.Errorf("expected tags not found")
+			return errors.New("expected tags not found")
 		}
 	}
 	return nil

internal/tracegen/config.go

@@ -4,8 +4,8 @@
 package tracegen
 
 import (
+	"errors"
 	"flag"
-	"fmt"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -54,7 +54,7 @@ func Run(c *Config, tracers []trace.Tracer, logger *zap.Logger) error {
 	if c.Duration > 0 {
 		c.Traces = 0
 	} else if c.Traces <= 0 {
-		return fmt.Errorf("either `traces` or `duration` must be greater than 0")
+		return errors.New("either `traces` or `duration` must be greater than 0")
 	}
 
 	wg := sync.WaitGroup{}