add more linters

Signed-off-by: Ryan Leung <rleungx@gmail.com>

.gitignore

@@ -28,3 +28,4 @@ coverage
 go.work*
 embedded_assets_handler.go
 *.log
+*.bin

.golangci.yml

@@ -15,6 +15,9 @@ linters:
     - gofmt
     - revive
     - errcheck
+    - exportloopref
+    - goimports
+    - depguard
 linters-settings:
   gocritic:
     # Which checks should be disabled; can't be combined with 'enabled-checks'; default is empty
@@ -205,6 +208,14 @@ linters-settings:
       - (net/http.ResponseWriter).Write
       - github.com/pingcap/log.Sync
       - (github.com/tikv/pd/pkg/ratelimit.Runner).RunTask
+  depguard:
+    rules:
+      denied-deps:
+        deny:
+          - pkg: go.uber.org/atomic
+            desc: "Use 'sync/atomic' instead of 'go.uber.org/atomic'"
+          - pkg: github.com/pkg/errors
+            desc: "Use 'github.com/pingcap/errors' instead of 'github.com/pkg/errors'"
 issues:
   exclude-rules:
     - path: (_test\.go|pkg/mock/.*\.go|tests/.*\.go)

client/go.mod

@@ -14,7 +14,6 @@ require (
 	github.com/pingcap/log v1.1.1-0.20221110025148-ca232912c9f3
 	github.com/prometheus/client_golang v1.18.0
 	github.com/stretchr/testify v1.8.2
-	go.uber.org/atomic v1.10.0
 	go.uber.org/goleak v1.1.11
 	go.uber.org/zap v1.24.0
 	golang.org/x/exp v0.0.0-20230711005742-c3f37128e5a4
@@ -34,6 +33,7 @@ require (
 	github.com/prometheus/common v0.46.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/stretchr/objx v0.5.0 // indirect
+	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/net v0.23.0 // indirect
 	golang.org/x/sys v0.18.0 // indirect

client/http/client_test.go

@@ -18,13 +18,13 @@ import (
 	"context"
 	"net/http"
 	"strings"
+	"sync/atomic"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/require"
 	"github.com/tikv/pd/client/errs"
 	"github.com/tikv/pd/client/retry"
-	"go.uber.org/atomic"
 )
 
 func TestPDAllowFollowerHandleHeader(t *testing.T) {
@@ -53,7 +53,8 @@ func TestPDAllowFollowerHandleHeader(t *testing.T) {
 func TestWithCallerID(t *testing.T) {
 	re := require.New(t)
 	checked := 0
-	expectedVal := atomic.NewString(defaultCallerID)
+	var expectedVal atomic.Value
+	expectedVal.Store(defaultCallerID)
 	httpClient := NewHTTPClientWithRequestChecker(func(req *http.Request) error {
 		val := req.Header.Get(xCallerIDKey)
 		// Exclude the request sent by the inner client.
@@ -68,7 +69,7 @@ func TestWithCallerID(t *testing.T) {
 	defer c.Close()
 	c.GetRegions(context.Background())
 	expectedVal.Store("test")
-	c.WithCallerID(expectedVal.Load()).GetRegions(context.Background())
+	c.WithCallerID(expectedVal.Load().(string)).GetRegions(context.Background())
 	re.Equal(2, checked)
 }
 

client/resource_group/controller/controller.go

@@ -32,7 +32,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	pd "github.com/tikv/pd/client"
 	"github.com/tikv/pd/client/errs"
-	atomicutil "go.uber.org/atomic"
 	"go.uber.org/zap"
 	"golang.org/x/exp/slices"
 )
@@ -57,7 +56,7 @@ const (
 	lowToken       selectType = 1
 )
 
-var enableControllerTraceLog = atomicutil.NewBool(false)
+var enableControllerTraceLog atomic.Bool
 
 func logControllerTrace(msg string, fields ...zap.Field) {
 	if enableControllerTraceLog.Load() {

go.mod

@@ -56,7 +56,6 @@ require (
 	go.etcd.io/etcd/client/pkg/v3 v3.5.15
 	go.etcd.io/etcd/client/v3 v3.5.15
 	go.etcd.io/etcd/server/v3 v3.5.15
-	go.uber.org/atomic v1.10.0
 	go.uber.org/goleak v1.3.0
 	go.uber.org/zap v1.27.0
 	golang.org/x/exp v0.0.0-20230711005742-c3f37128e5a4
@@ -187,6 +186,7 @@ require (
 	go.opentelemetry.io/otel/sdk v1.20.0 // indirect
 	go.opentelemetry.io/otel/trace v1.20.0 // indirect
 	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/dig v1.9.0 // indirect
 	go.uber.org/fx v1.12.0 // indirect
 	go.uber.org/multierr v1.11.0

go.sum

@@ -566,9 +566,8 @@ go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
 go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
-go.uber.org/atomic v1.10.0 h1:9qC72Qh0+3MqyJbAn8YU5xVq1frD8bn3JtD2oXtafVQ=
-go.uber.org/atomic v1.10.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/dig v1.9.0 h1:pJTDXKEhRqBI8W7rU7kwT5EgyRZuSMVSFcZolOvKK9U=
 go.uber.org/dig v1.9.0/go.mod h1:X34SnWGr8Fyla9zQNO2GSO2D+TIuqB14OS8JhYocIyw=
 go.uber.org/fx v1.12.0 h1:+1+3Cz9M0dFMPy9SW9XUIUHye8bnPUm7q7DroNGWYG4=

pkg/gctuner/finalizer.go

@@ -16,8 +16,7 @@ package gctuner
 
 import (
 	"runtime"
-
-	"go.uber.org/atomic"
+	"sync/atomic"
 )
 
 type finalizerCallback func()

pkg/gctuner/memory_limit_tuner.go

@@ -17,14 +17,14 @@ package gctuner
 import (
 	"math"
 	"runtime/debug"
+	"sync/atomic"
 	"time"
 
 	"github.com/pingcap/failpoint"
 	"github.com/pingcap/log"
 	util "github.com/tikv/pd/pkg/gogc"
 	"github.com/tikv/pd/pkg/memory"
 	"github.com/tikv/pd/pkg/utils/logutil"
-	atomicutil "go.uber.org/atomic"
 	"go.uber.org/zap"
 )
 
@@ -35,10 +35,10 @@ var GlobalMemoryLimitTuner = &memoryLimitTuner{}
 // So we can change memory limit dynamically to avoid frequent GC when memory usage is greater than the limit.
 type memoryLimitTuner struct {
 	finalizer                    *finalizer
-	isTuning                     atomicutil.Bool
-	percentage                   atomicutil.Float64
-	waitingReset                 atomicutil.Bool
-	nextGCTriggeredByMemoryLimit atomicutil.Bool
+	isTuning                     atomic.Bool
+	percentage                   atomic.Value
+	waitingReset                 atomic.Bool
+	nextGCTriggeredByMemoryLimit atomic.Bool
 }
 
 // fallbackPercentage indicates the fallback memory limit percentage when turning.
@@ -74,8 +74,6 @@ func (t *memoryLimitTuner) tuning() {
 		if t.nextGCTriggeredByMemoryLimit.Load() && t.waitingReset.CompareAndSwap(false, true) {
 			go func() {
 				defer logutil.LogPanic()
-				memory.MemoryLimitGCLast.Store(time.Now())
-				memory.MemoryLimitGCTotal.Add(1)
 				setMemoryLimit(t.calcMemoryLimit(fallbackPercentage))
 				resetInterval := 1 * time.Minute // Wait 1 minute and set back, to avoid frequent GC
 				failpoint.Inject("testMemoryLimitTuner", func(val failpoint.Value) {
@@ -89,12 +87,10 @@ func (t *memoryLimitTuner) tuning() {
 					continue
 				}
 			}()
-			memory.TriggerMemoryLimitGC.Store(true)
 		}
 		t.nextGCTriggeredByMemoryLimit.Store(true)
 	} else {
 		t.nextGCTriggeredByMemoryLimit.Store(false)
-		memory.TriggerMemoryLimitGC.Store(false)
 	}
 }
 
@@ -117,7 +113,7 @@ func (t *memoryLimitTuner) SetPercentage(percentage float64) {
 
 // GetPercentage get the percentage from memory limit tuner.
 func (t *memoryLimitTuner) GetPercentage() float64 {
-	return t.percentage.Load()
+	return t.percentage.Load().(float64)
 }
 
 // UpdateMemoryLimit updates the memory limit.

pkg/memory/var.go

@@ -15,19 +15,10 @@
 package memory
 
 import (
-	"time"
-
-	atomicutil "go.uber.org/atomic"
+	atomic "sync/atomic"
 )
 
 // Process global variables for memory limit.
 var (
-	ServerMemoryLimitOriginText  = atomicutil.NewString("0")
-	ServerMemoryLimit            = atomicutil.NewUint64(0)
-	ServerMemoryLimitSessMinSize = atomicutil.NewUint64(128 << 20)
-
-	QueryForceDisk       = atomicutil.NewInt64(0)
-	TriggerMemoryLimitGC = atomicutil.NewBool(false)
-	MemoryLimitGCLast    = atomicutil.NewTime(time.Time{})
-	MemoryLimitGCTotal   = atomicutil.NewInt64(0)
+	ServerMemoryLimit atomic.Uint64
 )

tools/pd-simulator/simulator/cases/hot_write.go

@@ -16,6 +16,7 @@ package cases
 
 import (
 	"fmt"
+
 	"github.com/docker/go-units"
 	"github.com/pingcap/kvproto/pkg/metapb"
 	"github.com/tikv/pd/pkg/core"

tools/pd-simulator/simulator/simutil/key_test.go

@@ -15,12 +15,12 @@
 package simutil
 
 import (
-	"github.com/pingcap/kvproto/pkg/metapb"
-	"github.com/tikv/pd/pkg/core"
 	"testing"
 
+	"github.com/pingcap/kvproto/pkg/metapb"
 	"github.com/stretchr/testify/require"
 	"github.com/tikv/pd/pkg/codec"
+	"github.com/tikv/pd/pkg/core"
 )
 
 func TestGenerateTableKeys(t *testing.T) {