math/rand/v2

test/s3/copying/s3_copying_test.go

@@ -91,7 +91,7 @@ func waitForS3Service(t *testing.T, client *s3.Client, timeout time.Duration) {
 func getNewBucketName() string {
 	timestamp := time.Now().UnixNano()
 	// Add random suffix to prevent collisions when tests run quickly
-	randomSuffix := mathrand.Intn(100000)
+	randomSuffix := mathrand.IntN(100000)
 	return fmt.Sprintf("%s%d-%d", defaultConfig.BucketPrefix, timestamp, randomSuffix)
 }
 

test/s3/iam/s3_iam_framework.go

@@ -656,7 +656,7 @@ func (f *S3IAMTestFramework) GenerateUniqueBucketName(prefix string) string {
 	testName = strings.ReplaceAll(testName, "_", "-")
 
 	// Add random suffix to handle parallel tests
-	randomSuffix := mathrand.Intn(10000)
+	randomSuffix := mathrand.IntN(10000)
 
 	return fmt.Sprintf("%s-%s-%d", prefix, testName, randomSuffix)
 }

unmaintained/stress_filer_upload/write_files/write_files.go

@@ -33,7 +33,7 @@ func main() {
 		f, err := os.Create(fmt.Sprintf("%s/file%05d", *toDir, i))
 		check(err)
 
-		fileSize := *minSize + rand.Intn(*maxSize-*minSize)
+		fileSize := *minSize + rand.IntN(*maxSize-*minSize)
 		startTime := time.Now()
 
 		fmt.Printf("write %s %d bytes: ", f.Name(), fileSize)

weed/filer/filechunks_test.go

@@ -71,7 +71,7 @@ func TestRandomFileChunksCompact(t *testing.T) {
 
 	var chunks []*filer_pb.FileChunk
 	for i := 0; i < 15; i++ {
-		start, stop := rand.Intn(len(data)), rand.Intn(len(data))
+		start, stop := rand.IntN(len(data)), rand.IntN(len(data))
 		if start > stop {
 			start, stop = stop, start
 		}

weed/mount/weedfs.go

@@ -3,7 +3,7 @@ package mount
 import (
 	"context"
 	"errors"
-	"math/rand"
+	"math/rand/v2"
 	"os"
 	"path"
 	"path/filepath"
@@ -110,7 +110,7 @@ func NewSeaweedFileSystem(option *Option) *WFS {
 		fhLockTable:   util.NewLockTable[FileHandleId](),
 	}
 
-	wfs.option.filerIndex = int32(rand.Intn(len(option.FilerAddresses)))
+	wfs.option.filerIndex = int32(rand.IntN(len(option.FilerAddresses)))
 	wfs.option.setupUniqueCacheDirectory()
 	if option.CacheSizeMBForRead > 0 {
 		wfs.chunkCache = chunk_cache.NewTieredChunkCache(256, option.getUniqueCacheDirForRead(), option.CacheSizeMBForRead, 1024*1024)

weed/mq/broker/broker_connect.go

@@ -3,12 +3,13 @@ package broker
 import (
 	"context"
 	"fmt"
+	"io"
+	"math/rand/v2"
+	"time"
+
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
-	"io"
-	"math/rand"
-	"time"
 )
 
 // BrokerConnectToBalancer connects to the broker balancer and sends stats
@@ -61,7 +62,7 @@ func (b *MessageQueueBroker) BrokerConnectToBalancer(brokerBalancer string, stop
 			}
 			// glog.V(3).Infof("sent stats: %+v", stats)
 
-			time.Sleep(time.Millisecond*5000 + time.Duration(rand.Intn(1000))*time.Millisecond)
+			time.Sleep(time.Millisecond*5000 + time.Duration(rand.IntN(1000))*time.Millisecond)
 		}
 	})
 }

weed/mq/broker/broker_grpc_pub.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"math/rand"
+	"math/rand/v2"
 	"net"
 	"sync/atomic"
 	"time"
@@ -71,7 +71,7 @@ func (b *MessageQueueBroker) PublishMessage(stream mq_pb.SeaweedMessaging_Publis
 	var isClosed bool
 
 	// process each published messages
-	clientName := fmt.Sprintf("%v-%4d", findClientAddress(stream.Context()), rand.Intn(10000))
+	clientName := fmt.Sprintf("%v-%4d", findClientAddress(stream.Context()), rand.IntN(10000))
 	publisher := topic.NewLocalPublisher()
 	localTopicPartition.Publishers.AddPublisher(clientName, publisher)
 

weed/mq/pub_balancer/allocate.go

@@ -1,12 +1,13 @@
 package pub_balancer
 
 import (
+	"math/rand/v2"
+	"time"
+
 	cmap "github.com/orcaman/concurrent-map/v2"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
-	"math/rand"
-	"time"
 )
 
 func AllocateTopicPartitions(brokers cmap.ConcurrentMap[string, *BrokerStats], partitionCount int32) (assignments []*mq_pb.BrokerPartitionAssignment) {
@@ -43,7 +44,7 @@ func pickBrokers(brokers cmap.ConcurrentMap[string, *BrokerStats], count int32)
 	}
 	pickedBrokers := make([]string, 0, count)
 	for i := int32(0); i < count; i++ {
-		p := rand.Intn(len(candidates))
+		p := rand.IntN(len(candidates))
 		pickedBrokers = append(pickedBrokers, candidates[p])
 	}
 	return pickedBrokers
@@ -59,7 +60,7 @@ func pickBrokersExcluded(brokers []string, count int, excludedLeadBroker string,
 		if len(pickedBrokers) < count {
 			pickedBrokers = append(pickedBrokers, broker)
 		} else {
-			j := rand.Intn(i + 1)
+			j := rand.IntN(i + 1)
 			if j < count {
 				pickedBrokers[j] = broker
 			}
@@ -69,7 +70,7 @@ func pickBrokersExcluded(brokers []string, count int, excludedLeadBroker string,
 	// shuffle the picked brokers
 	count = len(pickedBrokers)
 	for i := 0; i < count; i++ {
-		j := rand.Intn(count)
+		j := rand.IntN(count)
 		pickedBrokers[i], pickedBrokers[j] = pickedBrokers[j], pickedBrokers[i]
 	}
 

weed/mq/pub_balancer/balance_brokers.go

@@ -1,9 +1,10 @@
 package pub_balancer
 
 import (
+	"math/rand/v2"
+
 	cmap "github.com/orcaman/concurrent-map/v2"
 	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"math/rand"
 )
 
 func BalanceTopicPartitionOnBrokers(brokers cmap.ConcurrentMap[string, *BrokerStats]) BalanceAction {
@@ -28,7 +29,7 @@ func BalanceTopicPartitionOnBrokers(brokers cmap.ConcurrentMap[string, *BrokerSt
 			maxPartitionCountPerBroker = brokerStats.Val.TopicPartitionCount
 			sourceBroker = brokerStats.Key
 			// select a random partition from the source broker
-			randomePartitionIndex := rand.Intn(int(brokerStats.Val.TopicPartitionCount))
+			randomePartitionIndex := rand.IntN(int(brokerStats.Val.TopicPartitionCount))
 			index := 0
 			for topicPartitionStats := range brokerStats.Val.TopicPartitionStats.IterBuffered() {
 				if index == randomePartitionIndex {

weed/mq/pub_balancer/repair.go

@@ -1,11 +1,12 @@
 package pub_balancer
 
 import (
+	"math/rand/v2"
+	"sort"
+
 	cmap "github.com/orcaman/concurrent-map/v2"
 	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"math/rand"
 	"modernc.org/mathutil"
-	"sort"
 )
 
 func (balancer *PubBalancer) RepairTopics() []BalanceAction {
@@ -56,7 +57,7 @@ func RepairMissingTopicPartitions(brokers cmap.ConcurrentMap[string, *BrokerStat
 					Topic:     t,
 					Partition: partition,
 				},
-				TargetBroker: candidates[rand.Intn(len(candidates))],
+				TargetBroker: candidates[rand.IntN(len(candidates))],
 			})
 		}
 	}

weed/sftpd/auth/password.go

@@ -2,7 +2,7 @@ package auth
 
 import (
 	"fmt"
-	"math/rand"
+	"math/rand/v2"
 	"time"
 
 	"github.com/seaweedfs/seaweedfs/weed/sftpd/user"
@@ -47,7 +47,7 @@ func (a *PasswordAuthenticator) Authenticate(conn ssh.ConnMetadata, password []b
 	}
 
 	// Add delay to prevent brute force attacks
-	time.Sleep(time.Duration(100+rand.Intn(100)) * time.Millisecond)
+	time.Sleep(time.Duration(100+rand.IntN(100)) * time.Millisecond)
 
 	return nil, fmt.Errorf("authentication failed")
 }

weed/sftpd/user/user.go

@@ -2,7 +2,7 @@
 package user
 
 import (
-	"math/rand"
+	"math/rand/v2"
 	"path/filepath"
 )
 
@@ -22,7 +22,7 @@ func NewUser(username string) *User {
 	// Generate a random UID/GID between 1000 and 60000
 	// This range is typically safe for regular users in most systems
 	// 0-999 are often reserved for system users
-	randomId := 1000 + rand.Intn(59000)
+	randomId := 1000 + rand.IntN(59000)
 
 	return &User{
 		Username:    username,

weed/shell/shell_liner.go

@@ -3,19 +3,20 @@ package shell
 import (
 	"context"
 	"fmt"
-	"github.com/seaweedfs/seaweedfs/weed/cluster"
-	"github.com/seaweedfs/seaweedfs/weed/pb"
-	"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
-	"github.com/seaweedfs/seaweedfs/weed/util"
-	"github.com/seaweedfs/seaweedfs/weed/util/grace"
 	"io"
-	"math/rand"
+	"math/rand/v2"
 	"os"
 	"path"
 	"regexp"
 	"slices"
 	"strings"
 
+	"github.com/seaweedfs/seaweedfs/weed/cluster"
+	"github.com/seaweedfs/seaweedfs/weed/pb"
+	"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
+	"github.com/seaweedfs/seaweedfs/weed/util"
+	"github.com/seaweedfs/seaweedfs/weed/util/grace"
+
 	"github.com/peterh/liner"
 )
 
@@ -69,7 +70,7 @@ func RunShell(options ShellOptions) {
 		fmt.Printf("master: %s ", *options.Masters)
 		if len(filers) > 0 {
 			fmt.Printf("filers: %v", filers)
-			commandEnv.option.FilerAddress = filers[rand.Intn(len(filers))]
+			commandEnv.option.FilerAddress = filers[rand.IntN(len(filers))]
 		}
 		fmt.Println()
 	}

weed/storage/volume_vacuum_test.go

@@ -157,7 +157,7 @@ func doSomeWritesDeletes(i int, v *Volume, t *testing.T, infos []*needleInfo) {
 	}
 	// println("written file", i, "checksum", n.Checksum.Value(), "size", size)
 	if rand.Float64() < 0.03 {
-		toBeDeleted := rand.Intn(i) + 1
+		toBeDeleted := rand.IntN(i) + 1
 		oldNeedle := newEmptyNeedle(uint64(toBeDeleted))
 		v.deleteNeedle2(oldNeedle)
 		// println("deleted file", toBeDeleted)
@@ -175,7 +175,7 @@ type needleInfo struct {
 
 func newRandomNeedle(id uint64) *needle.Needle {
 	n := new(needle.Needle)
-	n.Data = make([]byte, rand.Intn(1024))
+	n.Data = make([]byte, rand.IntN(1024))
 	rand.Read(n.Data)
 
 	n.Checksum = needle.NewCRC(n.Data)

weed/util/skiplist/skiplist_test.go

@@ -235,11 +235,11 @@ func TestFindGreaterOrEqual(t *testing.T) {
 	list = New(memStore)
 
 	for i := 0; i < maxN; i++ {
-		list.InsertByKey(Element(rand.Intn(maxNumber)), 0, Element(i))
+		list.InsertByKey(Element(rand.IntN(maxNumber)), 0, Element(i))
 	}
 
 	for i := 0; i < maxN; i++ {
-		key := Element(rand.Intn(maxNumber))
+		key := Element(rand.IntN(maxNumber))
 		if _, v, ok, _ := list.FindGreaterOrEqual(key); ok {
 			// if f is v should be bigger than the element before
 			if v.Prev != nil && bytes.Compare(key, v.Prev.Key) < 0 {