This is an automated email from the ASF dual-hosted git repository.

justxuewei pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/dubbo-go.git


The following commit(s) were added to refs/heads/main by this push:
     new abb51f582 chores: replace deprecation ioutil functions (#2593)
abb51f582 is described below

commit abb51f58228a8ef1ef1e33817f5f28bbc3859574
Author: dongjiang <[email protected]>
AuthorDate: Mon Feb 19 13:19:38 2024 +0800

    chores: replace deprecation ioutil functions (#2593)
---
 config/config_loader_options.go                 | 16 ++++------------
 config/tls_config.go                            |  8 +++-----
 config_center/file/impl.go                      | 14 ++++----------
 config_center/file/listener.go                  | 14 ++++----------
 go.mod                                          |  2 +-
 go.sum                                          |  9 ---------
 loader.go                                       | 18 +++++-------------
 protocol/jsonrpc/http.go                        | 12 +++---------
 protocol/jsonrpc/server.go                      | 17 +++++------------
 remoting/xds/mapping/handler.go                 | 14 +++++---------
 remoting/xds/mapping/handler_test.go            | 16 +++++-----------
 xds/client/bootstrap/bootstrap.go               | 22 ++++++++--------------
 xds/credentials/cert_manager.go                 | 10 ++--------
 xds/credentials/certgenerate/generate_cert.go   |  8 +++-----
 xds/credentials/certgenerate/generate_csr.go    |  6 ++----
 xds/credentials/certprovider/pemfile/watcher.go | 15 +++++----------
 xds/credentials/token_provider.go               |  4 ++--
 17 files changed, 61 insertions(+), 144 deletions(-)

diff --git a/config/config_loader_options.go b/config/config_loader_options.go
index 03cbe1ff1..83736a548 100644
--- a/config/config_loader_options.go
+++ b/config/config_loader_options.go
@@ -18,26 +18,18 @@
 package config
 
 import (
-       "io/ioutil"
        "os"
        "path/filepath"
        "runtime"
        "strings"
-)
 
-import (
+       "dubbo.apache.org/dubbo-go/v3/common/constant"
+       "dubbo.apache.org/dubbo-go/v3/common/constant/file"
        "github.com/dubbogo/gost/log/logger"
-
        "github.com/knadh/koanf"
-
        "github.com/pkg/errors"
 )
 
-import (
-       "dubbo.apache.org/dubbo-go/v3/common/constant"
-       "dubbo.apache.org/dubbo-go/v3/common/constant/file"
-)
-
 type loaderConf struct {
        suffix string      // loaderConf file extension default yaml
        path   string      // loaderConf file path default ./conf/dubbogo.yaml
@@ -66,7 +58,7 @@ func NewLoaderConf(opts ...LoaderConfOption) *loaderConf {
                return conf
        }
        if len(conf.bytes) <= 0 {
-               if bytes, err := ioutil.ReadFile(conf.path); err != nil {
+               if bytes, err := os.ReadFile(conf.path); err != nil {
                        panic(err)
                } else {
                        conf.bytes = bytes
@@ -108,7 +100,7 @@ func WithSuffix(suffix file.Suffix) LoaderConfOption {
 func WithPath(path string) LoaderConfOption {
        return loaderConfigFunc(func(conf *loaderConf) {
                conf.path = absolutePath(path)
-               if bytes, err := ioutil.ReadFile(conf.path); err != nil {
+               if bytes, err := os.ReadFile(conf.path); err != nil {
                        panic(err)
                } else {
                        conf.bytes = bytes
diff --git a/config/tls_config.go b/config/tls_config.go
index 97c79ec2c..b5da5ba85 100644
--- a/config/tls_config.go
+++ b/config/tls_config.go
@@ -20,10 +20,8 @@ package config
 import (
        "crypto/tls"
        "crypto/x509"
-       "io/ioutil"
-)
+       "os"
 
-import (
        "dubbo.apache.org/dubbo-go/v3/common/constant"
 )
 
@@ -50,7 +48,7 @@ func GetServerTlsConfig(opt *TLSConfig) (*tls.Config, error) {
        //need mTLS
        if opt.CACertFile != "" {
                ca = x509.NewCertPool()
-               caBytes, err := ioutil.ReadFile(opt.CACertFile)
+               caBytes, err := os.ReadFile(opt.CACertFile)
                if err != nil {
                        return nil, err
                }
@@ -80,7 +78,7 @@ func GetClientTlsConfig(opt *TLSConfig) (*tls.Config, error) {
                ServerName: opt.TLSServerName,
        }
        ca := x509.NewCertPool()
-       caBytes, err := ioutil.ReadFile(opt.CACertFile)
+       caBytes, err := os.ReadFile(opt.CACertFile)
        if err != nil {
                return nil, err
        }
diff --git a/config_center/file/impl.go b/config_center/file/impl.go
index 287ca1e10..ae1930ad9 100644
--- a/config_center/file/impl.go
+++ b/config_center/file/impl.go
@@ -20,25 +20,19 @@ package file
 import (
        "bytes"
        "errors"
-       "io/ioutil"
        "os"
        "os/exec"
        "os/user"
        "path/filepath"
        "runtime"
        "strings"
-)
 
-import (
        gxset "github.com/dubbogo/gost/container/set"
 
-       perrors "github.com/pkg/errors"
-)
-
-import (
        "dubbo.apache.org/dubbo-go/v3/common"
        "dubbo.apache.org/dubbo-go/v3/config_center"
        "dubbo.apache.org/dubbo-go/v3/config_center/parser"
+       perrors "github.com/pkg/errors"
 )
 
 var osType = runtime.GOOS
@@ -123,7 +117,7 @@ func (fsdc *FileSystemDynamicConfiguration) 
GetProperties(key string, opts ...co
        tmpOpts := config_center.NewOptions(opts...)
 
        tmpPath := fsdc.GetPath(key, tmpOpts.Center.Group)
-       file, err := ioutil.ReadFile(tmpPath)
+       file, err := os.ReadFile(tmpPath)
        if err != nil {
                return "", perrors.WithStack(err)
        }
@@ -152,7 +146,7 @@ func (fsdc *FileSystemDynamicConfiguration) 
GetConfigKeysByGroup(group string) (
        tmpPath := fsdc.GetPath("", group)
        r := gxset.NewSet()
 
-       fileInfo, _ := ioutil.ReadDir(tmpPath)
+       fileInfo, _ := os.ReadDir(tmpPath)
 
        for _, file := range fileInfo {
                // list file
@@ -208,7 +202,7 @@ func (fsdc *FileSystemDynamicConfiguration) write2File(fp 
string, value string)
                return perrors.WithStack(err)
        }
 
-       return ioutil.WriteFile(fp, []byte(value), os.ModePerm)
+       return os.WriteFile(fp, []byte(value), os.ModePerm)
 }
 
 func forceMkdirParent(fp string) error {
diff --git a/config_center/file/listener.go b/config_center/file/listener.go
index c68643532..2a588b220 100644
--- a/config_center/file/listener.go
+++ b/config_center/file/listener.go
@@ -18,20 +18,14 @@
 package file
 
 import (
-       "io/ioutil"
+       "os"
        "sync"
-)
-
-import (
-       "github.com/dubbogo/gost/log/logger"
-
-       "github.com/fsnotify/fsnotify"
-)
 
-import (
        "dubbo.apache.org/dubbo-go/v3/common/extension"
        "dubbo.apache.org/dubbo-go/v3/config_center"
        "dubbo.apache.org/dubbo-go/v3/remoting"
+       "github.com/dubbogo/gost/log/logger"
+       "github.com/fsnotify/fsnotify"
 )
 
 // CacheListener is file watcher
@@ -154,7 +148,7 @@ func (cl *CacheListener) RemoveListener(key string, 
listener config_center.Confi
 }
 
 func getFileContent(path string) string {
-       c, err := ioutil.ReadFile(path)
+       c, err := os.ReadFile(path)
        if err != nil {
                logger.Errorf("read file path:%s err:%v", path, err)
                return ""
diff --git a/go.mod b/go.mod
index 630870e12..129ce6e2f 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module dubbo.apache.org/dubbo-go/v3
 
-go 1.15
+go 1.16
 
 require (
        cloud.google.com/go/compute/metadata v0.2.3 // indirect
diff --git a/go.sum b/go.sum
index 6e9903f3c..5e6d9cf6c 100644
--- a/go.sum
+++ b/go.sum
@@ -470,7 +470,6 @@ github.com/census-instrumentation/opencensus-proto 
v0.2.1/go.mod h1:f6KPmirojxKA
 github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod 
h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.4.1 
h1:iKLQ0xPNFxR/2hzXZMrBo8f1j86j5WHzznCCQxV/b8g=
 github.com/census-instrumentation/opencensus-proto v0.4.1/go.mod 
h1:4T9NM4+4Vw91VeyqjLS6ao50K5bOcLKN6Q42XnYaRYw=
-github.com/certifi/gocertifi v0.0.0-20191021191039-0944d244cd40 
h1:xvUo53O5MRZhVMJAxWCJcS5HHrqAiAG9SJ1LpMu6aAI=
 github.com/certifi/gocertifi v0.0.0-20191021191039-0944d244cd40/go.mod 
h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
 github.com/cespare/xxhash v1.1.0 
h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod 
h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
@@ -500,11 +499,8 @@ github.com/cncf/xds/go 
v0.0.0-20220314180256-7f1daf1720fc/go.mod h1:eXthEFrGJvWH
 github.com/cncf/xds/go v0.0.0-20230310173818-32f1caf87195 
h1:58f1tJ1ra+zFINPlwLWvQsR9CzAKt2e+EWV2yX9oXQ4=
 github.com/cncf/xds/go v0.0.0-20230310173818-32f1caf87195/go.mod 
h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod 
h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
-github.com/cockroachdb/datadriven v0.0.0-20200714090401-bf6692d28da5 
h1:xD/lrqdvwsc+O2bjSSi3YqY73Ke3LAiSCx49aCesA0E=
 github.com/cockroachdb/datadriven v0.0.0-20200714090401-bf6692d28da5/go.mod 
h1:h6jFvWxBdQXxjopDMZyH2UVceIRfR84bdzbkoKrsWNo=
-github.com/cockroachdb/errors v1.2.4 
h1:Lap807SXTH5tri2TivECb/4abUkMZC9zRoLarvcKDqs=
 github.com/cockroachdb/errors v1.2.4/go.mod 
h1:rQD95gz6FARkaKkQXUksEje/d9a6wBJoCr5oaCLELYA=
-github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f 
h1:o/kfcElHqOiXqcou5a3rIlMc7oJbMQkeLk0VQJ7zgqY=
 github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f/go.mod 
h1:i/u985jwjWRlyHXQbwatDASoW0RMlZ/3i9yJHE2xLkI=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod 
h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
 github.com/coreos/bbolt v1.3.2/go.mod 
h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
@@ -599,7 +595,6 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod 
h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/fsnotify/fsnotify v1.4.9/go.mod 
h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.6.0 
h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
 github.com/fsnotify/fsnotify v1.6.0/go.mod 
h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
-github.com/getsentry/raven-go v0.2.0 
h1:no+xWJRb5ZI7eE8TWgIq1jLulQiIoLG0IfYxv5JYMGs=
 github.com/getsentry/raven-go v0.2.0/go.mod 
h1:KungGk8q33+aIAZUIVWZDr2OfAEBsO49PX4NzFV5kcQ=
 github.com/ghodss/yaml v1.0.0/go.mod 
h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-asn1-ber/asn1-ber v1.3.1/go.mod 
h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
@@ -1380,7 +1375,6 @@ golang.org/x/lint 
v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRu
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod 
h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod 
h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20201208152925-83fdc39ff7b5/go.mod 
h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
-golang.org/x/lint v0.0.0-20210508222113-6edffad5e616 
h1:VLliZ0d+/avPrXXH+OakdXhpJuEoBZuwh1m2j7U6Iug=
 golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod 
h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod 
h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod 
h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
@@ -1396,7 +1390,6 @@ golang.org/x/mod v0.4.2/go.mod 
h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod 
h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.7.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
 golang.org/x/mod v0.9.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20180530234432-1e491301e022/go.mod 
h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod 
h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -1736,7 +1729,6 @@ golang.org/x/tools v0.1.5/go.mod 
h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.12/go.mod 
h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.3.0/go.mod 
h1:/rWhSS2+zyEVwoJf8YAX6L2f0ntZ7Kn/mGgAWcipA5k=
 golang.org/x/tools v0.6.0/go.mod 
h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/tools v0.7.0 h1:W4OVu8VVOaIO0yzWMNdepAulS7YfoS3Zabrm8DOXXU4=
 golang.org/x/tools v0.7.0/go.mod 
h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod 
h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod 
h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -1751,7 +1743,6 @@ gonum.org/v1/gonum 
v0.0.0-20181121035319-3f7ecaa7e8ca/go.mod h1:Y+Yx5eoAFn32cQvJ
 gonum.org/v1/gonum v0.8.2 h1:CCXrcPKiGGotvnN6jfUsKk4rRqm7q09/YbKb5xCEvtM=
 gonum.org/v1/gonum v0.8.2/go.mod 
h1:oe/vMfY3deqTw+1EZJhuvEW2iwGF1bW9wwu7XCu0+v0=
 gonum.org/v1/netlib v0.0.0-20181029234149-ec6d1f5cefe6/go.mod 
h1:wa6Ws7BG/ESfp6dHfk7C6KdzKA7wR7u/rKwOGE66zvw=
-gonum.org/v1/netlib v0.0.0-20190313105609-8cb42192e0e0 
h1:OE9mWmgKkjJyEmDAAtGMPjXu+YNeGvK9VTSHY6+Qihc=
 gonum.org/v1/netlib v0.0.0-20190313105609-8cb42192e0e0/go.mod 
h1:wa6Ws7BG/ESfp6dHfk7C6KdzKA7wR7u/rKwOGE66zvw=
 gonum.org/v1/plot v0.0.0-20190515093506-e2840ee46a6b/go.mod 
h1:Wt8AAjI+ypCyYX3nZBvf6cAIx93T+c/OS2HFAYskSZc=
 google.golang.org/api v0.3.1/go.mod 
h1:6wY9I6uQWHQ8EM57III9mq/AjF+i8G65rmVagqKMtkk=
diff --git a/loader.go b/loader.go
index 43c005303..dce6c4e4d 100644
--- a/loader.go
+++ b/loader.go
@@ -18,32 +18,24 @@
 package dubbo
 
 import (
-       "io/ioutil"
        "os"
        "path/filepath"
        "runtime"
        "strings"
-)
 
-import (
+       "dubbo.apache.org/dubbo-go/v3/common/constant"
+       "dubbo.apache.org/dubbo-go/v3/common/constant/file"
+       "dubbo.apache.org/dubbo-go/v3/config/parsers/properties"
        "github.com/dubbogo/gost/log/logger"
-
        "github.com/knadh/koanf"
        "github.com/knadh/koanf/parsers/json"
        "github.com/knadh/koanf/parsers/toml"
        "github.com/knadh/koanf/parsers/yaml"
        "github.com/knadh/koanf/providers/confmap"
        "github.com/knadh/koanf/providers/rawbytes"
-
        "github.com/pkg/errors"
 )
 
-import (
-       "dubbo.apache.org/dubbo-go/v3/common/constant"
-       "dubbo.apache.org/dubbo-go/v3/common/constant/file"
-       "dubbo.apache.org/dubbo-go/v3/config/parsers/properties"
-)
-
 var (
        defaultActive   = "default"
        instanceOptions = defaultInstanceOptions()
@@ -99,7 +91,7 @@ func NewLoaderConf(opts ...LoaderConfOption) *loaderConf {
                return conf
        }
        if len(conf.bytes) <= 0 {
-               if bytes, err := ioutil.ReadFile(conf.path); err != nil {
+               if bytes, err := os.ReadFile(conf.path); err != nil {
                        panic(err)
                } else {
                        conf.bytes = bytes
@@ -141,7 +133,7 @@ func WithSuffix(suffix file.Suffix) LoaderConfOption {
 func WithPath(path string) LoaderConfOption {
        return loaderConfigFunc(func(conf *loaderConf) {
                conf.path = absolutePath(path)
-               if bytes, err := ioutil.ReadFile(conf.path); err != nil {
+               if bytes, err := os.ReadFile(conf.path); err != nil {
                        panic(err)
                } else {
                        conf.bytes = bytes
diff --git a/protocol/jsonrpc/http.go b/protocol/jsonrpc/http.go
index 2a62c4617..3cd31a555 100644
--- a/protocol/jsonrpc/http.go
+++ b/protocol/jsonrpc/http.go
@@ -22,7 +22,7 @@ import (
        "bytes"
        "context"
        "fmt"
-       "io/ioutil"
+       "io"
        "net"
        "net/http"
        "net/url"
@@ -30,19 +30,13 @@ import (
        "strings"
        "sync/atomic"
        "time"
-)
 
-import (
        "github.com/dubbogo/gost/log/logger"
-
        "github.com/opentracing/opentracing-go"
 
-       perrors "github.com/pkg/errors"
-)
-
-import (
        "dubbo.apache.org/dubbo-go/v3/common"
        "dubbo.apache.org/dubbo-go/v3/common/constant"
+       perrors "github.com/pkg/errors"
 )
 
 // Request is HTTP protocol request
@@ -194,7 +188,7 @@ func (c *HTTPClient) Do(addr, path string, httpHeader 
http.Header, body []byte)
        }
        defer httpRsp.Body.Close()
 
-       b, err := ioutil.ReadAll(httpRsp.Body)
+       b, err := io.ReadAll(httpRsp.Body)
        if err != nil {
                return nil, perrors.WithStack(err)
        }
diff --git a/protocol/jsonrpc/server.go b/protocol/jsonrpc/server.go
index 2b3e9a769..171aea1b2 100644
--- a/protocol/jsonrpc/server.go
+++ b/protocol/jsonrpc/server.go
@@ -22,27 +22,20 @@ import (
        "bytes"
        "context"
        "io"
-       "io/ioutil"
        "net"
        "net/http"
        "runtime"
        "runtime/debug"
        "sync"
        "time"
-)
 
-import (
        "github.com/dubbogo/gost/log/logger"
-
        "github.com/opentracing/opentracing-go"
 
-       perrors "github.com/pkg/errors"
-)
-
-import (
        "dubbo.apache.org/dubbo-go/v3/common"
        "dubbo.apache.org/dubbo-go/v3/common/constant"
        "dubbo.apache.org/dubbo-go/v3/protocol/invocation"
+       perrors "github.com/pkg/errors"
 )
 
 // A value sent as a placeholder for the server's response value when the 
server
@@ -106,7 +99,7 @@ func (s *Server) handlePkg(conn net.Conn) {
                        ProtoMajor:    1,
                        ProtoMinor:    1,
                        ContentLength: int64(len(body)),
-                       Body:          ioutil.NopCloser(bytes.NewReader(body)),
+                       Body:          io.NopCloser(bytes.NewReader(body)),
                }
                rsp.Header.Del("Content-Type")
                rsp.Header.Del("Content-Length")
@@ -130,7 +123,7 @@ func (s *Server) handlePkg(conn net.Conn) {
                        return
                }
 
-               reqBody, err := ioutil.ReadAll(r.Body)
+               reqBody, err := io.ReadAll(r.Body)
                r.Body.Close()
                if err != nil {
                        return
@@ -277,7 +270,7 @@ func serveRequest(ctx context.Context, header 
map[string]string, body []byte, co
                        ProtoMajor:    1,
                        ProtoMinor:    1,
                        ContentLength: int64(len(body)),
-                       Body:          ioutil.NopCloser(bytes.NewReader(body)),
+                       Body:          io.NopCloser(bytes.NewReader(body)),
                }
                rsp.Header.Del("Content-Type")
                rsp.Header.Del("Content-Length")
@@ -303,7 +296,7 @@ func serveRequest(ctx context.Context, header 
map[string]string, body []byte, co
                        ProtoMajor:    1,
                        ProtoMinor:    1,
                        ContentLength: int64(len(body)),
-                       Body:          ioutil.NopCloser(bytes.NewReader(body)),
+                       Body:          io.NopCloser(bytes.NewReader(body)),
                }
                rsp.Header.Del("Content-Type")
                rsp.Header.Del("Content-Length")
diff --git a/remoting/xds/mapping/handler.go b/remoting/xds/mapping/handler.go
index b306b62b1..7e11cc247 100644
--- a/remoting/xds/mapping/handler.go
+++ b/remoting/xds/mapping/handler.go
@@ -20,23 +20,19 @@ package mapping
 import (
        "encoding/json"
        "fmt"
-       "io/ioutil"
+       "io"
        "net/http"
+       "os"
        "sync"
        "time"
-)
 
-import (
        "github.com/dubbogo/gost/log/logger"
 
        structpb "github.com/golang/protobuf/ptypes/struct"
 
-       perrors "github.com/pkg/errors"
-)
-
-import (
        "dubbo.apache.org/dubbo-go/v3/remoting/xds/common"
        "dubbo.apache.org/dubbo-go/v3/xds/client"
+       perrors "github.com/pkg/errors"
 )
 
 const (
@@ -125,7 +121,7 @@ func (i *InterfaceMapHandlerImpl) 
GetHostAddrMap(serviceUniqueKey string) (strin
 func (i *InterfaceMapHandlerImpl) getServiceUniqueKeyHostAddrMapFromPilot() 
(map[string]string, error) {
        req, _ := http.NewRequest(http.MethodGet, 
fmt.Sprintf("http://%s/debug/adsz";, i.istioDebugAddr.String()), nil)
        if !i.localDebugMode {
-               token, err := ioutil.ReadFile(i.istioTokenPath)
+               token, err := os.ReadFile(i.istioTokenPath)
                if err != nil {
                        return nil, err
                }
@@ -138,7 +134,7 @@ func (i *InterfaceMapHandlerImpl) 
getServiceUniqueKeyHostAddrMapFromPilot() (map
                return nil, err
        }
 
-       data, err := ioutil.ReadAll(rsp.Body)
+       data, err := io.ReadAll(rsp.Body)
        if err != nil {
                return nil, err
        }
diff --git a/remoting/xds/mapping/handler_test.go 
b/remoting/xds/mapping/handler_test.go
index 9e1a0d8c5..919bc6f42 100644
--- a/remoting/xds/mapping/handler_test.go
+++ b/remoting/xds/mapping/handler_test.go
@@ -18,23 +18,17 @@
 package mapping
 
 import (
-       "io/ioutil"
        "net/http"
+       "os"
        "testing"
        "time"
-)
-
-import (
-       structpb "github.com/golang/protobuf/ptypes/struct"
-
-       "github.com/stretchr/testify/assert"
-       "github.com/stretchr/testify/mock"
-)
 
-import (
        "dubbo.apache.org/dubbo-go/v3/common/constant"
        "dubbo.apache.org/dubbo-go/v3/remoting/xds/common"
        "dubbo.apache.org/dubbo-go/v3/xds/client/mocks"
+       structpb "github.com/golang/protobuf/ptypes/struct"
+       "github.com/stretchr/testify/assert"
+       "github.com/stretchr/testify/mock"
 )
 
 const (
@@ -125,5 +119,5 @@ func getMatchFunction(metadata string) func(abc 
*structpb.Struct) bool {
 }
 
 func generateMockToken() error {
-       return ioutil.WriteFile(istioTokenPathFoo, []byte(istioTokenFoo), 0777)
+       return os.WriteFile(istioTokenPathFoo, []byte(istioTokenFoo), 0777)
 }
diff --git a/xds/client/bootstrap/bootstrap.go 
b/xds/client/bootstrap/bootstrap.go
index 7cc623db9..e0057a421 100644
--- a/xds/client/bootstrap/bootstrap.go
+++ b/xds/client/bootstrap/bootstrap.go
@@ -29,30 +29,24 @@ import (
        "bytes"
        "encoding/json"
        "fmt"
-       "io/ioutil"
+       "os"
        "strings"
-)
 
-import (
        dubbogoLogger "github.com/dubbogo/gost/log/logger"
 
        v2corepb "github.com/envoyproxy/go-control-plane/envoy/api/v2/core"
-       v3corepb "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
-
-       "github.com/golang/protobuf/jsonpb"
-       "github.com/golang/protobuf/proto"
-
-       "google.golang.org/grpc"
-       "google.golang.org/grpc/credentials/google"
-       "google.golang.org/grpc/credentials/insecure"
-)
 
-import (
        "dubbo.apache.org/dubbo-go/v3/xds/client/resource/version"
        "dubbo.apache.org/dubbo-go/v3/xds/credentials/certprovider"
        "dubbo.apache.org/dubbo-go/v3/xds/internal"
        "dubbo.apache.org/dubbo-go/v3/xds/utils/envconfig"
        "dubbo.apache.org/dubbo-go/v3/xds/utils/pretty"
+       v3corepb "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
+       "github.com/golang/protobuf/jsonpb"
+       "github.com/golang/protobuf/proto"
+       "google.golang.org/grpc"
+       "google.golang.org/grpc/credentials/google"
+       "google.golang.org/grpc/credentials/insecure"
 )
 
 const (
@@ -71,7 +65,7 @@ const (
 var gRPCVersion = fmt.Sprintf("%s %s", gRPCUserAgentName, grpc.Version)
 
 // For overriding in unit tests.
-var bootstrapFileReadFunc = ioutil.ReadFile
+var bootstrapFileReadFunc = os.ReadFile
 
 // ServerConfig contains the configuration to connect to a server, including
 // URI, creds, and transport API version (e.g. v2 or v3).
diff --git a/xds/credentials/cert_manager.go b/xds/credentials/cert_manager.go
index d29aeaa4d..9a8b34853 100644
--- a/xds/credentials/cert_manager.go
+++ b/xds/credentials/cert_manager.go
@@ -24,18 +24,11 @@ import (
        "crypto/x509"
        "encoding/pem"
        "fmt"
-       "io/ioutil"
        "os"
        "strconv"
        "strings"
        "time"
-)
 
-import (
-       "github.com/dubbogo/gost/log/logger"
-)
-
-import (
        "dubbo.apache.org/dubbo-go/v3/xds/client/bootstrap"
        "dubbo.apache.org/dubbo-go/v3/xds/credentials/certgenerate"
        "dubbo.apache.org/dubbo-go/v3/xds/credentials/certprovider"
@@ -43,6 +36,7 @@ import (
        "dubbo.apache.org/dubbo-go/v3/xds/credentials/certprovider/remote"
        "dubbo.apache.org/dubbo-go/v3/xds/internal"
        "dubbo.apache.org/dubbo-go/v3/xds/utils/envconfig"
+       "github.com/dubbogo/gost/log/logger"
 )
 
 func init() {
@@ -162,7 +156,7 @@ func (c *CACertManager) GetRootCertificate() 
(*x509.CertPool, error) {
 
 // UpdateRoot update root cert
 func (c *CACertManager) UpdateRoot() error {
-       rootFileContents, err := ioutil.ReadFile(c.rootPath)
+       rootFileContents, err := os.ReadFile(c.rootPath)
        if err != nil {
                return err
        }
diff --git a/xds/credentials/certgenerate/generate_cert.go 
b/xds/credentials/certgenerate/generate_cert.go
index 8f590be33..9d2091e11 100644
--- a/xds/credentials/certgenerate/generate_cert.go
+++ b/xds/credentials/certgenerate/generate_cert.go
@@ -35,13 +35,11 @@ import (
        "encoding/pem"
        "errors"
        "fmt"
-       "io/ioutil"
        "math/big"
+       "os"
        "strings"
        "time"
-)
 
-import (
        "github.com/dubbogo/gost/log/logger"
 )
 
@@ -242,12 +240,12 @@ func GenCertFromCSR(csr *x509.CertificateRequest, 
signingCert *x509.Certificate,
 //     signerCertFile: cert file name
 //     signerPrivFile: private key file name
 func LoadSignerCredsFromFiles(signerCertFile string, signerPrivFile string) 
(*x509.Certificate, crypto.PrivateKey, error) {
-       signerCertBytes, err := ioutil.ReadFile(signerCertFile)
+       signerCertBytes, err := os.ReadFile(signerCertFile)
        if err != nil {
                return nil, nil, fmt.Errorf("certificate file reading failure 
(%v)", err)
        }
 
-       signerPrivBytes, err := ioutil.ReadFile(signerPrivFile)
+       signerPrivBytes, err := os.ReadFile(signerPrivFile)
        if err != nil {
                return nil, nil, fmt.Errorf("private key file reading failure 
(%v)", err)
        }
diff --git a/xds/credentials/certgenerate/generate_csr.go 
b/xds/credentials/certgenerate/generate_csr.go
index 7e1edf0af..35c9b2977 100644
--- a/xds/credentials/certgenerate/generate_csr.go
+++ b/xds/credentials/certgenerate/generate_csr.go
@@ -33,11 +33,9 @@ import (
        "crypto/x509/pkix"
        "errors"
        "fmt"
-       "io/ioutil"
+       "os"
        "strings"
-)
 
-import (
        "github.com/dubbogo/gost/log/logger"
 )
 
@@ -116,7 +114,7 @@ func AppendRootCerts(pemCert []byte, rootCertFile string) 
([]byte, error) {
        rootCerts := pemCert
        if len(rootCertFile) > 0 {
                logger.Debugf("append root certificates from %v", rootCertFile)
-               certBytes, err := ioutil.ReadFile(rootCertFile)
+               certBytes, err := os.ReadFile(rootCertFile)
                if err != nil {
                        return rootCerts, fmt.Errorf("failed to read root 
certificates (%v)", err)
                }
diff --git a/xds/credentials/certprovider/pemfile/watcher.go 
b/xds/credentials/certprovider/pemfile/watcher.go
index 0b1540a8e..0e04a0181 100644
--- a/xds/credentials/certprovider/pemfile/watcher.go
+++ b/xds/credentials/certprovider/pemfile/watcher.go
@@ -32,17 +32,12 @@ import (
        "crypto/x509"
        "errors"
        "fmt"
-       "io/ioutil"
+       "os"
        "path/filepath"
        "time"
-)
 
-import (
-       "github.com/dubbogo/grpc-go/grpclog"
-)
-
-import (
        "dubbo.apache.org/dubbo-go/v3/xds/credentials/certprovider"
+       "github.com/dubbogo/grpc-go/grpclog"
 )
 
 const defaultCertRefreshDuration = 1 * time.Hour
@@ -159,12 +154,12 @@ func (w *watcher) updateIdentityDistributor() {
                return
        }
 
-       certFileContents, err := ioutil.ReadFile(w.opts.CertFile)
+       certFileContents, err := os.ReadFile(w.opts.CertFile)
        if err != nil {
                logger.Warningf("certFile (%s) read failed: %v", 
w.opts.CertFile, err)
                return
        }
-       keyFileContents, err := ioutil.ReadFile(w.opts.KeyFile)
+       keyFileContents, err := os.ReadFile(w.opts.KeyFile)
        if err != nil {
                logger.Warningf("keyFile (%s) read failed: %v", w.opts.KeyFile, 
err)
                return
@@ -196,7 +191,7 @@ func (w *watcher) updateRootDistributor() {
                return
        }
 
-       rootFileContents, err := ioutil.ReadFile(w.opts.RootFile)
+       rootFileContents, err := os.ReadFile(w.opts.RootFile)
        if err != nil {
                logger.Warningf("rootFile (%s) read failed: %v", 
w.opts.RootFile, err)
                return
diff --git a/xds/credentials/token_provider.go 
b/xds/credentials/token_provider.go
index c6cc713af..fdcc98bfe 100644
--- a/xds/credentials/token_provider.go
+++ b/xds/credentials/token_provider.go
@@ -19,7 +19,7 @@ package credentials
 
 import (
        "context"
-       "io/ioutil"
+       "os"
 )
 
 // provide k8s service account
@@ -30,7 +30,7 @@ type saTokenProvider struct {
 
 // NewSaTokenProvider return a provider
 func NewSaTokenProvider(tokenPath string) (*saTokenProvider, error) {
-       sa, err := ioutil.ReadFile(tokenPath)
+       sa, err := os.ReadFile(tokenPath)
        if err != nil {
                return nil, err
        }

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