feat: use Go 1.21 and adapt code

.github/workflows/lint.yml

@@ -7,5 +7,5 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.18'
+          go-version: '1.21'
       - uses: golangci/golangci-lint-action@v3

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
         name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: ^1.18
+          go-version: ^1.21
         id: go
       -
         name: Checkout

.github/workflows/test_and_publish_docker_image.yml

@@ -17,7 +17,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.18'
+          go-version: '1.21'
       - run: go build
       - run: go test -race ./...
 

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.18 as build
+FROM golang:1.21 as build
 
 WORKDIR /src
 COPY . .

cmd/download_publishers.go

@@ -1,7 +1,7 @@
 package cmd
 
 import (
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"net/url"
@@ -33,7 +33,7 @@ var downloadPublishersCmd = &cobra.Command{
 	Run: func(_ *cobra.Command, args []string) {
 		var publishers []common.Publisher
 		if _, err := os.Stat(args[1]); err == nil {
-			data, err := ioutil.ReadFile(args[1])
+			data, err := os.ReadFile(args[1])
 			if err != nil {
 				log.Fatalf("error in reading %s: %v", args[1], err)
 			}
@@ -45,7 +45,7 @@ var downloadPublishersCmd = &cobra.Command{
 			log.Fatal(err)
 		}
 		defer resp.Body.Close()
-		bodyBytes, err := ioutil.ReadAll(resp.Body)
+		bodyBytes, err := io.ReadAll(resp.Body)
 		if err != nil {
 			log.Fatal(err)
 		}

common/lists_test.go

@@ -2,7 +2,7 @@ package common
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -16,7 +16,7 @@ type FakeReadFiler struct {
 
 func (f FakeReadFiler) ReadFile(filename string) ([]byte, error) {
 	buf := bytes.NewBufferString(f.Str)
-	return ioutil.ReadAll(buf)
+	return io.ReadAll(buf)
 }
 
 func TestReadPublishers(t *testing.T) {

common/publisher.go

@@ -2,13 +2,13 @@ package common
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	url "github.com/italia/publiccode-crawler/v4/internal"
 	"gopkg.in/yaml.v2"
 )
 
-var fileReaderInject = ioutil.ReadFile
+var fileReaderInject = os.ReadFile
 
 type Publisher struct {
 	ID            string    `yaml:"id"`

git/repo_activity.go

@@ -2,7 +2,6 @@ package git
 
 import (
 	"errors"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -242,7 +241,7 @@ func extractOldestCommitDate(cIter object.CommitIter) time.Time {
 }
 
 func ranges(name string, value float64) float64 {
-	data, err := ioutil.ReadFile("vitality-ranges.yml")
+	data, err := os.ReadFile("vitality-ranges.yml")
 	if err != nil {
 		log.Error(err)
 	}

go.mod

@@ -73,4 +73,4 @@ require (
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 )
 
-go 1.18
+go 1.21

go.sum

@@ -1427,6 +1427,7 @@ golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
 golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
 golang.org/x/term v0.10.0/go.mod h1:lpqdcUyK/oCiQxvxVrppt5ggO2KCZ5QblwqPnfZ6d5o=
 golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
+golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=