fix: update ioutil to io and os package

common/common.go

@@ -2,8 +2,8 @@ package common
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/url"
+	"os"
 	"path"
 	"runtime"
 	"strconv"
@@ -78,7 +78,7 @@ func MustParseURL(uri string) *url.URL {
 func GetCurrentVersion() int64 {
 	_, filename, _, _ := runtime.Caller(0)
 	dir := path.Join(path.Dir(filename), "./../")
-	dat, err := ioutil.ReadFile(path.Join(dir, "chain.version"))
+	dat, err := os.ReadFile(path.Join(dir, "chain.version"))
 	if err != nil {
 		panic(err)
 	}

sentinel/claim_store_test.go

@@ -1,7 +1,6 @@
 package sentinel
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -18,7 +17,7 @@ type ClaimStoreSuite struct {
 
 func (s *ClaimStoreSuite) SetUpTest() {
 	var err error
-	s.dir, err = ioutil.TempDir("/tmp", "claim-store")
+	s.dir, err = os.MkdirTemp("/tmp", "claim-store")
 	require.NoError(s.T(), err)
 }
 

sentinel/sentinel.go

@@ -4,7 +4,7 @@ import (
 	"crypto/tls"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
@@ -222,7 +222,7 @@ func (p Proxy) handleContract(w http.ResponseWriter, r *http.Request) {
 		d, _ := json.Marshal(conf)
 		_, _ = w.Write(d)
 	case http.MethodPost:
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			http.Error(w, "Error reading request body", http.StatusInternalServerError)
 			return

test/regression/cmd/operations.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
@@ -397,7 +396,7 @@ func (op *OpCheck) Execute(_ *os.Process, logs chan string) error {
 	}
 
 	// read response
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		log.Err(err).Msg("failed to read response")
 		return err