Refactor: move from io/ioutil to io and os package (#2234)

The io/ioutil package has been deprecated as of Go 1.16, see
https://golang.org/doc/go1.16#ioutil. This commit replaces the existing
io/ioutil functions with their new definitions in io and os packages.

Signed-off-by: Eng Zer Jun <zerjun@beatchain.co>

cmd/core/main_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package main
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -72,7 +71,7 @@ var _ = Describe("test waitSecretVolume", func() {
 			By("add non-empty file")
 			_, err := os.Create(testdir + "/file")
 			Expect(err).NotTo(HaveOccurred())
-			err = ioutil.WriteFile(testdir+"/file", []byte("test"), os.ModeAppend)
+			err = os.WriteFile(testdir+"/file", []byte("test"), os.ModeAppend)
 			Expect(err).NotTo(HaveOccurred())
 			err = waitWebhookSecretVolume(testdir, testTimeout, testInterval)
 			Expect(err).NotTo(HaveOccurred())

e2e/apiserver/apiserver_test.go

@@ -19,7 +19,7 @@ package e2e
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 
@@ -90,7 +90,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.Get(util.URL("/envs/" + envHelloMeta.EnvName))
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -109,7 +109,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.DefaultClient.Do(req)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -125,7 +125,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.Get(util.URL("/envs/"))
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -143,7 +143,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.DefaultClient.Do(req)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -160,7 +160,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.DefaultClient.Do(req)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -178,7 +178,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.Get(util.URL(url))
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -197,7 +197,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.Post(util.URL(url), "application/json", strings.NewReader(string(data)))
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -215,7 +215,7 @@ var _ = ginkgo.Describe("API", func() {
 			// TODO(zzxwill) revise the check process if we need to work on https://github.com/oam-dev/kubevela/discussions/933
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -229,7 +229,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.Get(util.URL("/components/"))
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)
@@ -257,7 +257,7 @@ var _ = ginkgo.Describe("API", func() {
 			resp, err := http.DefaultClient.Do(req)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			defer resp.Body.Close()
-			result, err := ioutil.ReadAll(resp.Body)
+			result, err := io.ReadAll(resp.Body)
 			gomega.Expect(err).NotTo(gomega.HaveOccurred())
 			var r apis.Response
 			err = json.Unmarshal(result, &r)

e2e/commonContext.go

@@ -19,8 +19,9 @@ package e2e
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
+	"os"
 	"strings"
 
 	"github.com/onsi/ginkgo"
@@ -60,7 +61,7 @@ var (
 	JsonAppFileContext = func(context, jsonAppFile string) bool {
 		return ginkgo.Context(context, func() {
 			ginkgo.It("Start the application through the app file in JSON format.", func() {
-				writeStatus := ioutil.WriteFile("vela.json", []byte(jsonAppFile), 0644)
+				writeStatus := os.WriteFile("vela.json", []byte(jsonAppFile), 0644)
 				gomega.Expect(writeStatus).NotTo(gomega.HaveOccurred())
 				output, err := Exec("vela up -f vela.json")
 				gomega.Expect(err).NotTo(gomega.HaveOccurred())
@@ -183,7 +184,7 @@ var (
 				resp, err := http.Post(util.URL("/envs/"), "application/json", strings.NewReader(string(data)))
 				gomega.Expect(err).NotTo(gomega.HaveOccurred())
 				defer resp.Body.Close()
-				result, err := ioutil.ReadAll(resp.Body)
+				result, err := io.ReadAll(resp.Body)
 				gomega.Expect(err).NotTo(gomega.HaveOccurred())
 				var r apis.Response
 				err = json.Unmarshal(result, &r)

e2e/plugin/plugin_suit_test.go

@@ -18,7 +18,6 @@ package plugin
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -71,9 +70,9 @@ var _ = BeforeSuite(func(done Done) {
 
 	err = os.MkdirAll("definitions", os.ModePerm)
 	Expect(err).NotTo(HaveOccurred())
-	err = ioutil.WriteFile("definitions/webservice.yaml", []byte(componentDef), 0644)
+	err = os.WriteFile("definitions/webservice.yaml", []byte(componentDef), 0644)
 	Expect(err).NotTo(HaveOccurred())
-	err = ioutil.WriteFile("definitions/ingress.yaml", []byte(traitDef), 0644)
+	err = os.WriteFile("definitions/ingress.yaml", []byte(traitDef), 0644)
 	Expect(err).NotTo(HaveOccurred())
 
 	By("apply test definitions")

e2e/plugin/plugin_test.go

@@ -18,7 +18,7 @@ package plugin
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"os/exec"
 	"time"
 
@@ -51,7 +51,7 @@ var _ = Describe("Test Kubectl Plugin", func() {
 			}, 5*time.Second).Should(BeNil())
 
 			By("dry-run application")
-			err := ioutil.WriteFile("dry-run-app.yaml", []byte(application), 0644)
+			err := os.WriteFile("dry-run-app.yaml", []byte(application), 0644)
 			Expect(err).NotTo(HaveOccurred())
 			output, err := e2e.Exec("kubectl-vela dry-run -f dry-run-app.yaml -n vela-system")
 			Expect(err).NotTo(HaveOccurred())
@@ -91,7 +91,7 @@ var _ = Describe("Test Kubectl Plugin", func() {
 			}, 5*time.Second).Should(BeNil())
 
 			By("live-diff application")
-			err := ioutil.WriteFile("live-diff-app.yaml", []byte(newApplication), 0644)
+			err := os.WriteFile("live-diff-app.yaml", []byte(newApplication), 0644)
 			Expect(err).NotTo(HaveOccurred())
 			output, err := e2e.Exec("kubectl-vela live-diff -f live-diff-app.yaml")
 			Expect(err).NotTo(HaveOccurred())

hack/crd/dispatch/dispatch.go

@@ -18,7 +18,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -50,7 +49,7 @@ func main() {
 	writeOld := func(fileName string, data []byte) {
 		pathOld := fmt.Sprintf("%s/%s", oldDir, fileName)
 		/* #nosec */
-		if err := ioutil.WriteFile(pathOld, data, 0644); err != nil {
+		if err := os.WriteFile(pathOld, data, 0644); err != nil {
 			log.Fatal(err)
 		}
 	}
@@ -58,7 +57,7 @@ func main() {
 	writeNew := func(fileName string, data []byte) {
 		pathNew := fmt.Sprintf("%s/%s", newDir, fileName)
 		/* #nosec */
-		if err := ioutil.WriteFile(pathNew, data, 0644); err != nil {
+		if err := os.WriteFile(pathNew, data, 0644); err != nil {
 			log.Fatal(err)
 		}
 	}
@@ -66,7 +65,7 @@ func main() {
 	writeRuntime := func(subPath, fileName string, data []byte) {
 		pathRuntime := fmt.Sprintf("%s/%s/charts/crds/%s", runtimeDir, subPath, fileName)
 		/* #nosec */
-		if err := ioutil.WriteFile(pathRuntime, data, 0644); err != nil {
+		if err := os.WriteFile(pathRuntime, data, 0644); err != nil {
 			log.Fatal(err)
 		}
 	}
@@ -77,7 +76,7 @@ func main() {
 		}
 		resourceName := extractMainInfo(info.Name())
 		/* #nosec */
-		data, err := ioutil.ReadFile(path)
+		data, err := os.ReadFile(path)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, "failed to read file", err)
 			return err

hack/crd/update.go

@@ -18,7 +18,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 )
@@ -39,7 +38,7 @@ func main() {
 
 func fixNewSchemaValidationCheck(crds []string) error {
 	for _, crd := range crds {
-		data, err := ioutil.ReadFile(crd)
+		data, err := os.ReadFile(crd)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "reading CRD file %s hit an issue: %s\n", crd, err)
 			return err
@@ -62,7 +61,7 @@ func fixNewSchemaValidationCheck(crds []string) error {
 				newData = append(newData, line)
 				previousLine = line
 			}
-			ioutil.WriteFile(crd, []byte(strings.Join(newData, "\n")), 0644)
+			os.WriteFile(crd, []byte(strings.Join(newData, "\n")), 0644)
 		}
 	}
 	return nil

hack/utils/common.go

@@ -21,7 +21,6 @@ import (
 	"encoding/base64"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -63,7 +62,7 @@ func GetChartSource(path string) (string, error) {
 		return "", err
 	}
 	defer os.Remove(packagedPath)
-	packaged, err := ioutil.ReadFile(packagedPath)
+	packaged, err := os.ReadFile(packagedPath)
 	if err != nil {
 		return "", err
 	}

legacy/convert/main.go

@@ -18,7 +18,6 @@ package main // #nosec
 
 import (
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -38,7 +37,7 @@ func main() {
 			return nil
 		}
 		/* #nosec */
-		data, err := ioutil.ReadFile(path)
+		data, err := os.ReadFile(path)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, "failed to read file", err)
 			return err
@@ -47,7 +46,7 @@ func main() {
 		newdata = strings.ReplaceAll(newdata, "x-kubernetes-preserve-unknown-fields: true", "")
 		newdata = strings.ReplaceAll(newdata, "default: false", "")
 		/* #nosec */
-		if err = ioutil.WriteFile(path, []byte(newdata), 0644); err != nil {
+		if err = os.WriteFile(path, []byte(newdata), 0644); err != nil {
 			fmt.Fprintln(os.Stderr, "failed to write file:", err)
 			return err
 		}

pkg/appfile/helm/schema_test.go

@@ -20,7 +20,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/getkin/kin-openapi/openapi3"
@@ -28,11 +28,11 @@ import (
 )
 
 func TestGenerateSchemaFromValues(t *testing.T) {
-	testValues, err := ioutil.ReadFile("./testdata/values.yaml")
+	testValues, err := os.ReadFile("./testdata/values.yaml")
 	if err != nil {
 		t.Error(err, "cannot load test data")
 	}
-	wantSchema, err := ioutil.ReadFile("./testdata/values.schema.json")
+	wantSchema, err := os.ReadFile("./testdata/values.schema.json")
 	if err != nil {
 		t.Error(err, "cannot load expected data")
 	}
@@ -54,7 +54,7 @@ func TestGenerateSchemaFromValues(t *testing.T) {
 
 func TestGetChartValuesJSONSchema(t *testing.T) {
 	testHelm := testData("podinfo", "5.1.4", "http://oam.dev/catalog", "testSecret")
-	wantSchema, err := ioutil.ReadFile("./testdata/podinfo.values.schema.json")
+	wantSchema, err := os.ReadFile("./testdata/podinfo.values.schema.json")
 	if err != nil {
 		t.Error(err, "cannot load expected data")
 	}

pkg/builtin/http/http.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"crypto/tls"
 	"io"
-	"io/ioutil"
 	"net/http"
 
 	"cuelang.org/go/cue"
@@ -90,7 +89,7 @@ func (c *HTTPCmd) Run(meta *registry.Meta) (res interface{}, err error) {
 	}
 	//nolint:errcheck
 	defer resp.Body.Close()
-	b, err := ioutil.ReadAll(resp.Body)
+	b, err := io.ReadAll(resp.Body)
 	// parse response body and headers
 	return map[string]interface{}{
 		"body":    string(b),

pkg/controller/common/rollout/rollout_webhook.go

@@ -21,7 +21,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 
@@ -67,7 +67,7 @@ func makeHTTPRequest(ctx context.Context, webhookEndPoint, method string, payloa
 			if requestErr != nil {
 				return requestErr
 			}
-			body, requestErr = ioutil.ReadAll(r.Body)
+			body, requestErr = io.ReadAll(r.Body)
 			if requestErr != nil {
 				return requestErr
 			}

pkg/controller/core.oam.dev/v1alpha2/application/assemble/assemble_suite_test.go

@@ -17,7 +17,7 @@ limitations under the License.
 package assemble
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 
 	. "github.com/onsi/ginkgo"
@@ -43,7 +43,7 @@ var _ = Describe("Test Assemble Options", func() {
 		)
 
 		appRev := &v1beta1.ApplicationRevision{}
-		b, err := ioutil.ReadFile("./testdata/apprevision.yaml")
+		b, err := os.ReadFile("./testdata/apprevision.yaml")
 		/* appRevision test data is generated based on below application
 		apiVersion: core.oam.dev/v1beta1
 		kind: Application
@@ -156,7 +156,7 @@ var _ = Describe("Test Assemble Options", func() {
 			compName = "frontend"
 		)
 		appRev := &v1beta1.ApplicationRevision{}
-		b, err := ioutil.ReadFile("./testdata/filter_annotations.yaml")
+		b, err := os.ReadFile("./testdata/filter_annotations.yaml")
 		getKeys := func(m map[string]string) []string {
 			var keys []string
 			for k := range m {

pkg/controller/core.oam.dev/v1alpha2/application/assemble/options_test.go

@@ -19,7 +19,7 @@ package assemble
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"reflect"
 
 	"github.com/google/go-cmp/cmp"
@@ -49,7 +49,7 @@ var _ = Describe("Test WorkloadOption", func() {
 
 	BeforeEach(func() {
 		appRev = &v1beta1.ApplicationRevision{}
-		b, err := ioutil.ReadFile("./testdata/apprevision.yaml")
+		b, err := os.ReadFile("./testdata/apprevision.yaml")
 		Expect(err).Should(BeNil())
 		err = yaml.Unmarshal(b, appRev)
 		Expect(err).Should(BeNil())

pkg/controller/core.oam.dev/v1alpha2/applicationconfiguration/component_custom_revision.go

@@ -21,7 +21,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
@@ -61,7 +61,7 @@ func (c *ComponentHandler) customComponentRevisionHook(relatedApps []reconcile.R
 	}
 	//nolint:errcheck
 	defer resp.Body.Close()
-	respData, err := ioutil.ReadAll(resp.Body)
+	respData, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

pkg/controller/core.oam.dev/v1alpha2/applicationconfiguration/component_custom_revision_test.go

@@ -19,7 +19,7 @@ package applicationconfiguration
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -36,7 +36,7 @@ import (
 
 var RevisionHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 	var req RevisionHookRequest
-	data, err := ioutil.ReadAll(r.Body)
+	data, err := io.ReadAll(r.Body)
 	if err != nil {
 		w.WriteHeader(400)
 		return

pkg/controller/utils/capability_test.go

@@ -19,7 +19,7 @@ package utils
 
 import (
 	"errors"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strings"
 	"testing"
@@ -218,7 +218,7 @@ func TestFixOpenAPISchema(t *testing.T) {
 			schema := swagger.Components.Schemas[model.ParameterFieldName].Value
 			fixOpenAPISchema("", schema)
 			fixedSchema, _ := schema.MarshalJSON()
-			expectedSchema, _ := ioutil.ReadFile(filepath.Join(TestDir, tc.fixedFile))
+			expectedSchema, _ := os.ReadFile(filepath.Join(TestDir, tc.fixedFile))
 			assert.Equal(t, string(fixedSchema), string(expectedSchema))
 		})
 	}

pkg/cue/convert_test.go

@@ -17,7 +17,7 @@ limitations under the License.
 package cue
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"cuelang.org/go/cue"
@@ -27,7 +27,7 @@ import (
 )
 
 func TestGetParameter(t *testing.T) {
-	data, _ := ioutil.ReadFile("testdata/workloads/metrics.cue")
+	data, _ := os.ReadFile("testdata/workloads/metrics.cue")
 	params, err := GetParameters(string(data))
 	assert.NoError(t, err)
 	assert.Equal(t, params, []types.Parameter{
@@ -37,7 +37,7 @@ func TestGetParameter(t *testing.T) {
 		{Name: "port", Required: false, Default: int64(8080), Type: cue.IntKind},
 		{Name: "selector", Required: false, Usage: "the label selector for the pods, default is the workload labels", Type: cue.StructKind},
 	})
-	data, _ = ioutil.ReadFile("testdata/workloads/deployment.cue")
+	data, _ = os.ReadFile("testdata/workloads/deployment.cue")
 	params, err = GetParameters(string(data))
 	assert.NoError(t, err)
 	assert.Equal(t, []types.Parameter{
@@ -49,7 +49,7 @@ func TestGetParameter(t *testing.T) {
 		{Name: "cpu", Short: "", Required: false, Usage: "", Default: "", Type: cue.StringKind}},
 		params)
 
-	data, _ = ioutil.ReadFile("testdata/workloads/test-param.cue")
+	data, _ = os.ReadFile("testdata/workloads/test-param.cue")
 	params, err = GetParameters(string(data))
 	assert.NoError(t, err)
 	assert.Equal(t, []types.Parameter{
@@ -60,14 +60,14 @@ func TestGetParameter(t *testing.T) {
 		{Name: "enable", Default: false, Type: cue.BoolKind},
 		{Name: "fval", Default: 64.3, Type: cue.FloatKind},
 		{Name: "nval", Default: float64(0), Required: true, Type: cue.NumberKind}}, params)
-	data, _ = ioutil.ReadFile("testdata/workloads/empty.cue")
+	data, _ = os.ReadFile("testdata/workloads/empty.cue")
 	params, err = GetParameters(string(data))
 	assert.NoError(t, err)
 	var exp []types.Parameter
 	assert.Equal(t, exp, params)
 
-	data, _ = ioutil.ReadFile("testdata/workloads/webservice.cue") // test cue parameter with "// +ignore" annotation
-	params, err = GetParameters(string(data))                      // Only test for func RetrieveComments
+	data, _ = os.ReadFile("testdata/workloads/webservice.cue") // test cue parameter with "// +ignore" annotation
+	params, err = GetParameters(string(data))                  // Only test for func RetrieveComments
 	assert.NoError(t, err)
 	var flag bool
 	for _, para := range params {

pkg/utils/common/common.go

@@ -23,7 +23,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
@@ -103,7 +102,7 @@ func HTTPGet(ctx context.Context, url string) ([]byte, error) {
 	}
 	//nolint:errcheck
 	defer resp.Body.Close()
-	return ioutil.ReadAll(resp.Body)
+	return io.ReadAll(resp.Body)
 }
 
 // GetCUEParameterValue converts definitions to cue format
@@ -240,7 +239,7 @@ func AskToChooseOneService(svcNames []string) (string, error) {
 
 // ReadYamlToObject will read a yaml K8s object to runtime.Object
 func ReadYamlToObject(path string, object k8sruntime.Object) error {
-	data, err := ioutil.ReadFile(filepath.Clean(path))
+	data, err := os.ReadFile(filepath.Clean(path))
 	if err != nil {
 		return err
 	}

pkg/utils/common/common_test.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -212,7 +211,7 @@ func TestGenOpenAPI(t *testing.T) {
 			if tc.want.targetSchemaFile == "" {
 				return
 			}
-			wantSchema, _ := ioutil.ReadFile(filepath.Join("testdata", tc.want.targetSchemaFile))
+			wantSchema, _ := os.ReadFile(filepath.Join("testdata", tc.want.targetSchemaFile))
 			if diff := cmp.Diff(wantSchema, got); diff != "" {
 				t.Errorf("\n%s\nGenOpenAPIFromFile(...): -want, +got:\n%s", tc.reason, diff)
 			}
@@ -232,7 +231,7 @@ func TestRealtimePrintCommandOutput(t *testing.T) {
 	err = RealtimePrintCommandOutput(cmd, logFile)
 	assert.NoError(t, err)
 
-	data, _ := ioutil.ReadFile(logFile)
+	data, _ := os.ReadFile(logFile)
 	assert.Contains(t, string(data), hello)
 	os.Remove(logFile)
 }

pkg/utils/config/config.go

@@ -19,7 +19,6 @@ package config
 import (
 	b64 "encoding/base64"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -67,7 +66,7 @@ func ReadConfig(envName, configName string) ([]byte, error) {
 		return nil, err
 	}
 	cfgFile := filepath.Join(d, configName)
-	b, err := ioutil.ReadFile(filepath.Clean(cfgFile))
+	b, err := os.ReadFile(filepath.Clean(cfgFile))
 	if os.IsNotExist(err) {
 		return []byte{}, nil
 	}
@@ -81,5 +80,5 @@ func WriteConfig(envName, configName string, data []byte) error {
 		return err
 	}
 	cfgFile := filepath.Join(d, configName)
-	return ioutil.WriteFile(cfgFile, data, 0600)
+	return os.WriteFile(cfgFile, data, 0600)
 }

pkg/utils/env/env.go

@@ -21,7 +21,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -43,7 +42,7 @@ func GetEnvDirByName(name string) string {
 
 // GetEnvByName will get env info by name
 func GetEnvByName(name string) (*types.EnvMeta, error) {
-	data, err := ioutil.ReadFile(filepath.Join(GetEnvDirByName(name), system.EnvConfigName))
+	data, err := os.ReadFile(filepath.Join(GetEnvDirByName(name), system.EnvConfigName))
 	if err != nil {
 		if os.IsNotExist(err) {
 			return nil, fmt.Errorf("env %s not exist", name)
@@ -106,7 +105,7 @@ func CreateOrUpdateEnv(ctx context.Context, c client.Client, envName string, env
 		return message, err
 	}
 	// nolint:gosec
-	if err = ioutil.WriteFile(filepath.Join(subEnvDir, system.EnvConfigName), data, 0644); err != nil {
+	if err = os.WriteFile(filepath.Join(subEnvDir, system.EnvConfigName), data, 0644); err != nil {
 		return message, err
 	}
 	curEnvPath, err := system.GetCurrentEnvPath()
@@ -114,7 +113,7 @@ func CreateOrUpdateEnv(ctx context.Context, c client.Client, envName string, env
 		return message, err
 	}
 	// nolint:gosec
-	if err = ioutil.WriteFile(curEnvPath, []byte(envName), 0644); err != nil {
+	if err = os.WriteFile(curEnvPath, []byte(envName), 0644); err != nil {
 		return message, err
 	}
 
@@ -156,7 +155,7 @@ func UpdateEnv(ctx context.Context, c client.Client, envName string, namespace s
 	}
 	subEnvDir := filepath.Join(envdir, envName)
 	// nolint:gosec
-	if err = ioutil.WriteFile(filepath.Join(subEnvDir, system.EnvConfigName), data, 0644); err != nil {
+	if err = os.WriteFile(filepath.Join(subEnvDir, system.EnvConfigName), data, 0644); err != nil {
 		return message, err
 	}
 	message = "Update env succeed"
@@ -181,7 +180,7 @@ func ListEnvs(envName string) ([]*types.EnvMeta, error) {
 	if err != nil {
 		return envList, err
 	}
-	files, err := ioutil.ReadDir(envDir)
+	files, err := os.ReadDir(envDir)
 	if err != nil {
 		return envList, err
 	}
@@ -193,7 +192,7 @@ func ListEnvs(envName string) ([]*types.EnvMeta, error) {
 		if !f.IsDir() {
 			continue
 		}
-		data, err := ioutil.ReadFile(filepath.Clean(filepath.Join(envDir, f.Name(), system.EnvConfigName)))
+		data, err := os.ReadFile(filepath.Clean(filepath.Join(envDir, f.Name(), system.EnvConfigName)))
 		if err != nil {
 			continue
 		}
@@ -215,7 +214,7 @@ func GetCurrentEnvName() (string, error) {
 	if err != nil {
 		return "", err
 	}
-	data, err := ioutil.ReadFile(filepath.Clean(currentEnvPath))
+	data, err := os.ReadFile(filepath.Clean(currentEnvPath))
 	if err != nil {
 		return "", err
 	}
@@ -264,7 +263,7 @@ func SetEnv(envName string) (string, error) {
 		return msg, err
 	}
 	//nolint:gosec
-	if err = ioutil.WriteFile(currentEnvPath, []byte(envName), 0644); err != nil {
+	if err = os.WriteFile(currentEnvPath, []byte(envName), 0644); err != nil {
 		return msg, err
 	}
 	msg = fmt.Sprintf("Set environment succeed, current environment is " + envName + ", namespace is " + envMeta.Namespace)

pkg/utils/system/system.go

@@ -18,7 +18,6 @@ package system
 
 import (
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -153,7 +152,7 @@ func InitDefaultEnv() error {
 	}
 	data, _ := json.Marshal(&types.EnvMeta{Namespace: types.DefaultAppNamespace, Name: types.DefaultEnvName})
 	//nolint:gosec
-	if err = ioutil.WriteFile(filepath.Join(defaultEnvDir, EnvConfigName), data, 0644); err != nil {
+	if err = os.WriteFile(filepath.Join(defaultEnvDir, EnvConfigName), data, 0644); err != nil {
 		return err
 	}
 	curEnvPath, err := GetCurrentEnvPath()
@@ -161,7 +160,7 @@ func InitDefaultEnv() error {
 		return err
 	}
 	//nolint:gosec
-	if err = ioutil.WriteFile(curEnvPath, []byte(types.DefaultEnvName), 0644); err != nil {
+	if err = os.WriteFile(curEnvPath, []byte(types.DefaultEnvName), 0644); err != nil {
 		return err
 	}
 	return nil

pkg/workflow/providers/http/do_test.go

@@ -17,7 +17,7 @@ limitations under the License.
 package http
 
 import (
-	"io/ioutil"
+	"io"
 	"net/http"
 	"testing"
 	"time"
@@ -113,7 +113,7 @@ func runMockServer(shutdown chan struct{}) {
 		w.Write([]byte("hello"))
 	})
 	http.HandleFunc("/echo", func(w http.ResponseWriter, req *http.Request) {
-		bt, _ := ioutil.ReadAll(req.Body)
+		bt, _ := io.ReadAll(req.Body)
 		w.Write(bt)
 	})
 	srv := &http.Server{Addr: ":1229"}

references/appfile/addon.go

@@ -19,7 +19,6 @@ package appfile
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -95,7 +94,7 @@ func ApplyTerraform(app *v1beta1.Application, k8sClient client.Client, ioStream
 					return nil, fmt.Errorf("failed to create directory for %s: %w", tfJSONDir, err)
 				}
 			}
-			if err := ioutil.WriteFile(filepath.Join(tfJSONDir, "main.tf.json"), tf, 0600); err != nil {
+			if err := os.WriteFile(filepath.Join(tfJSONDir, "main.tf.json"), tf, 0600); err != nil {
 				return nil, fmt.Errorf("failed to convert Terraform template: %w", err)
 			}
 

references/appfile/addon_suit_test.go

@@ -18,7 +18,6 @@ package appfile
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -91,7 +90,7 @@ var _ = BeforeSuite(func(done Done) {
 
 	Expect(k8sClient.Create(ctx, &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: addonNamespace}})).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
-	workloadData, err := ioutil.ReadFile("testdata/workloadDef.yaml")
+	workloadData, err := os.ReadFile("testdata/workloadDef.yaml")
 	Expect(err).Should(BeNil())
 
 	Expect(yaml.Unmarshal(workloadData, &wd)).Should(BeNil())
@@ -100,7 +99,7 @@ var _ = BeforeSuite(func(done Done) {
 	logf.Log.Info("Creating workload definition", "data", wd)
 	Expect(k8sClient.Create(ctx, &wd)).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
-	def, err := ioutil.ReadFile("testdata/terraform-aliyun-oss-workloadDefinition.yaml")
+	def, err := os.ReadFile("testdata/terraform-aliyun-oss-workloadDefinition.yaml")
 	Expect(err).Should(BeNil())
 	var terraformDefinition corev1beta1.WorkloadDefinition
 	Expect(yaml.Unmarshal(def, &terraformDefinition)).Should(BeNil())

references/appfile/api/appfile.go

@@ -19,7 +19,6 @@ package api
 import (
 	"encoding/json"
 	"errors"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -104,7 +103,7 @@ func JSONToYaml(data []byte, appFile *AppFile) (*AppFile, error) {
 
 // LoadFromFile will read the file and load the AppFile struct
 func LoadFromFile(filename string) (*AppFile, error) {
-	b, err := ioutil.ReadFile(filepath.Clean(filename))
+	b, err := os.ReadFile(filepath.Clean(filename))
 	if err != nil {
 		return nil, err
 	}

references/appfile/driver/local.go

@@ -18,7 +18,6 @@ package driver
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -63,7 +62,7 @@ func (l *Local) Save(app *api.Application, envName string) error {
 		return err
 	}
 	//nolint:gosec
-	return ioutil.WriteFile(filepath.Join(appDir, app.Name+".yaml"), out, 0644)
+	return os.WriteFile(filepath.Join(appDir, app.Name+".yaml"), out, 0644)
 }
 
 // Delete application from local storage

references/appfile/driver/local_test.go

@@ -17,7 +17,7 @@ limitations under the License.
 package driver
 
 import (
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"reflect"
 	"strings"
@@ -47,7 +47,7 @@ func init() {
 	}
 	afile.Services = svcs
 	out, _ := yaml.Marshal(afile)
-	_ = ioutil.WriteFile(filepath.Join(dir, appName+".yaml"), out, 0644)
+	_ = os.WriteFile(filepath.Join(dir, appName+".yaml"), out, 0644)
 }
 
 func TestLocalDelete(t *testing.T) {

references/appfile/dryrun/suit_test.go

@@ -17,7 +17,7 @@ limitations under the License.
 package dryrun
 
 import (
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"testing"
 	"time"
@@ -118,6 +118,6 @@ var _ = AfterSuite(func() {
 })
 
 func readDataFromFile(path string) string {
-	b, _ := ioutil.ReadFile(path)
+	b, _ := os.ReadFile(path)
 	return string(b)
 }

references/cli/config.go

@@ -21,7 +21,7 @@ import (
 	"bytes"
 	b64 "encoding/base64"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 
 	"github.com/spf13/cobra"
@@ -105,7 +105,7 @@ func ListConfigs(ioStreams cmdutil.IOStreams, cmd *cobra.Command) error {
 }
 
 func listConfigs(dir string) ([]string, error) {
-	files, err := ioutil.ReadDir(dir)
+	files, err := os.ReadDir(dir)
 	if err != nil {
 		return nil, err
 	}

references/cli/dashboard.go

@@ -21,7 +21,6 @@ import (
 	"encoding/base64"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/signal"
 	"path/filepath"
@@ -127,7 +126,7 @@ func (o *Options) GetStaticPath() error {
 	}
 	tgzpath := filepath.Join(o.staticPath, "frontend.tgz")
 	//nolint:gosec
-	err = ioutil.WriteFile(tgzpath, data, 0644)
+	err = os.WriteFile(tgzpath, data, 0644)
 	if err != nil {
 		return fmt.Errorf("write frontend.tgz to static path err %w", err)
 	}
@@ -139,7 +138,7 @@ func (o *Options) GetStaticPath() error {
 	if err = tgz.Unarchive(tgzpath, o.staticPath); err != nil {
 		return fmt.Errorf("write static files to fontend dir err %w", err)
 	}
-	files, err := ioutil.ReadDir(o.staticPath)
+	files, err := os.ReadDir(o.staticPath)
 	if err != nil {
 		return fmt.Errorf("read static file %s err %w", o.staticPath, err)
 	}

references/cli/def.go

@@ -21,7 +21,6 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
@@ -119,7 +118,7 @@ func loadYAMLBytesFromFileOrHTTP(pathOrURL string) ([]byte, error) {
 	if strings.HasPrefix(pathOrURL, "http://") || strings.HasPrefix(pathOrURL, "https://") {
 		return common.HTTPGet(context.Background(), pathOrURL)
 	}
-	return ioutil.ReadFile(path.Clean(pathOrURL))
+	return os.ReadFile(path.Clean(pathOrURL))
 }
 
 func buildTemplateFromYAML(templateYAML string, def *common2.Definition) error {
@@ -256,7 +255,7 @@ func NewDefinitionInitCommand(c common.Args) *cobra.Command {
 				return errors.Wrapf(err, "failed to generate cue string")
 			}
 			if output != "" {
-				if err = ioutil.WriteFile(path.Clean(output), []byte(cueString), 0600); err != nil {
+				if err = os.WriteFile(path.Clean(output), []byte(cueString), 0600); err != nil {
 					return errors.Wrapf(err, "failed to write definition into %s", output)
 				}
 				cmd.Printf("Definition written to %s\n", output)
@@ -431,7 +430,7 @@ func NewDefinitionEditCommand(c common.Args) *cobra.Command {
 			}
 			filename := fmt.Sprintf("vela-def-%d", time.Now().UnixNano())
 			tempFilePath := filepath.Join(os.TempDir(), filename+".cue")
-			if err := ioutil.WriteFile(tempFilePath, []byte(cueString), 0600); err != nil {
+			if err := os.WriteFile(tempFilePath, []byte(cueString), 0600); err != nil {
 				return errors.Wrapf(err, "failed to write temporary file")
 			}
 			defer cleanup(tempFilePath)
@@ -440,7 +439,7 @@ func NewDefinitionEditCommand(c common.Args) *cobra.Command {
 				editor = "vi"
 			}
 			scriptFilePath := filepath.Join(os.TempDir(), filename+".sh")
-			if err := ioutil.WriteFile(scriptFilePath, []byte(editor+" "+tempFilePath), 0600); err != nil {
+			if err := os.WriteFile(scriptFilePath, []byte(editor+" "+tempFilePath), 0600); err != nil {
 				return errors.Wrapf(err, "failed to write temporary script file")
 			}
 			defer cleanup(scriptFilePath)
@@ -452,7 +451,7 @@ func NewDefinitionEditCommand(c common.Args) *cobra.Command {
 			if err = editCmd.Run(); err != nil {
 				return errors.Wrapf(err, "failed to run editor %s at path %s", editor, scriptFilePath)
 			}
-			newBuf, err := ioutil.ReadFile(path.Clean(tempFilePath))
+			newBuf, err := os.ReadFile(path.Clean(tempFilePath))
 			if err != nil {
 				return errors.Wrapf(err, "failed to read temporary file %s", tempFilePath)
 			}
@@ -540,7 +539,7 @@ func NewDefinitionRenderCommand(c common.Args) *cobra.Command {
 						s = "# " + strings.ReplaceAll(message, "{{INPUT_FILENAME}}", filepath.Base(inputFilename)) + "\n" + s
 					}
 					s = "# Code generated by KubeVela templates. DO NOT EDIT. Please edit the original cue file.\n" + s
-					if err := ioutil.WriteFile(outputFilename, []byte(s), 0600); err != nil {
+					if err := os.WriteFile(outputFilename, []byte(s), 0600); err != nil {
 						return errors.Wrapf(err, "failed to write YAML format definition to file %s", outputFilename)
 					}
 				}
@@ -741,7 +740,7 @@ func NewDefinitionValidateCommand(c common.Args) *cobra.Command {
 			"> vela def vet my-def.cue",
 		Args: cobra.ExactValidArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
-			cueBytes, err := ioutil.ReadFile(args[0])
+			cueBytes, err := os.ReadFile(args[0])
 			if err != nil {
 				return errors.Wrapf(err, "failed to read %s", args[0])
 			}

references/cli/def_test.go

@@ -19,7 +19,7 @@ package cli
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"path/filepath"
 	"strings"
@@ -53,8 +53,8 @@ func initCommand(cmd *cobra.Command) {
 	cmd.SilenceErrors = true
 	cmd.SilenceUsage = true
 	cmd.Flags().StringP("env", "", "", "")
-	cmd.SetOut(ioutil.Discard)
-	cmd.SetErr(ioutil.Discard)
+	cmd.SetOut(io.Discard)
+	cmd.SetErr(io.Discard)
 }
 
 func createTrait(c common2.Args, t *testing.T) string {
@@ -119,7 +119,7 @@ func createLocalTrait(t *testing.T) (string, string) {
 }
 
 func createLocalTraits(t *testing.T) string {
-	dirname, err := ioutil.TempDir(os.TempDir(), "vela-def-test-*")
+	dirname, err := os.MkdirTemp(os.TempDir(), "vela-def-test-*")
 	if err != nil {
 		t.Fatalf("failed to create temporary directory: %v", err)
 	}
@@ -286,7 +286,7 @@ func TestNewDefinitionRenderCommand(t *testing.T) {
 	_ = os.Setenv(HelmChartFormatEnvName, "system")
 	dirname := createLocalTraits(t)
 	defer removeDir(dirname, t)
-	outputDir, err := ioutil.TempDir(os.TempDir(), "vela-def-tests-output-*")
+	outputDir, err := os.MkdirTemp(os.TempDir(), "vela-def-tests-output-*")
 	if err != nil {
 		t.Fatalf("failed to create temporary output dir: %v", err)
 	}

references/cli/dryrun.go

@@ -21,7 +21,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -171,7 +170,7 @@ func ReadObjectsFromFile(path string) ([]oam.Object, error) {
 
 	var objs []oam.Object
 	//nolint:gosec
-	fis, err := ioutil.ReadDir(path)
+	fis, err := os.ReadDir(path)
 	if err != nil {
 		return nil, err
 	}
@@ -195,7 +194,7 @@ func ReadObjectsFromFile(path string) ([]oam.Object, error) {
 
 func readApplicationFromFile(filename string) (*corev1beta1.Application, error) {
 
-	fileContent, err := ioutil.ReadFile(filepath.Clean(filename))
+	fileContent, err := os.ReadFile(filepath.Clean(filename))
 	if err != nil {
 		return nil, err
 	}

references/cli/init.go

@@ -20,7 +20,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strconv"
 
 	"cuelang.org/go/cue"
@@ -96,7 +96,7 @@ func NewInitCommand(c common2.Args, ioStreams cmdutil.IOStreams) *cobra.Command
 			if err != nil {
 				return err
 			}
-			err = ioutil.WriteFile("./vela.yaml", b, 0600)
+			err = os.WriteFile("./vela.yaml", b, 0600)
 			if err != nil {
 				return err
 			}

references/cli/show.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
@@ -288,7 +287,7 @@ func generateIndexHTML(docsPath string) error {
 </body>
 </html>
 `
-	return ioutil.WriteFile(filepath.Join(docsPath, IndexHTML), []byte(indexHTML), 0600)
+	return os.WriteFile(filepath.Join(docsPath, IndexHTML), []byte(indexHTML), 0600)
 }
 
 func generateCustomCSS(docsPath string) error {
@@ -296,7 +295,7 @@ func generateCustomCSS(docsPath string) error {
 body {
     overflow: auto !important;
 }`
-	return ioutil.WriteFile(filepath.Join(docsPath, CSS), []byte(css), 0600)
+	return os.WriteFile(filepath.Join(docsPath, CSS), []byte(css), 0600)
 }
 
 func generateREADME(capabilities []types.Capability, docsPath string) error {

references/cli/show_test.go

@@ -18,7 +18,6 @@ package cli
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -73,7 +72,7 @@ func TestGenerateSideBar(t *testing.T) {
 			if diff := cmp.Diff(tc.want, got, test.EquateErrors()); diff != "" {
 				t.Errorf("\n%s\ngenerateSideBar(...): -want error, +got error:\n%s", tc.reason, diff)
 			}
-			data, err := ioutil.ReadFile(filepath.Clean(filepath.Join(TestDir, SideBar)))
+			data, err := os.ReadFile(filepath.Clean(filepath.Join(TestDir, SideBar)))
 			assert.NoError(t, err)
 			for _, c := range tc.capabilities {
 				assert.Contains(t, string(data), c.Name)
@@ -130,7 +129,7 @@ func TestGenerateREADME(t *testing.T) {
 			if diff := cmp.Diff(tc.want, got, test.EquateErrors()); diff != "" {
 				t.Errorf("\n%s\ngenerateREADME(...): -want error, +got error:\n%s", tc.reason, diff)
 			}
-			data, err := ioutil.ReadFile(filepath.Clean(filepath.Join(TestDir, README)))
+			data, err := os.ReadFile(filepath.Clean(filepath.Join(TestDir, README)))
 			assert.NoError(t, err)
 			for _, c := range tc.capabilities {
 				switch c.Type {

references/cli/up.go

@@ -17,7 +17,7 @@ limitations under the License.
 package cli
 
 import (
-	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/pkg/errors"
@@ -61,7 +61,7 @@ func NewUpCommand(c common2.Args, ioStream cmdutil.IOStreams) *cobra.Command {
 			if err != nil {
 				return err
 			}
-			fileContent, err := ioutil.ReadFile(filepath.Clean(filePath))
+			fileContent, err := os.ReadFile(filepath.Clean(filePath))
 			if err != nil {
 				return err
 			}

references/common/application.go

@@ -21,7 +21,6 @@ import (
 	"context"
 	j "encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -362,7 +361,7 @@ func saveAndLoadRemoteAppfile(url string) (*api.AppFile, error) {
 		return nil, err
 	}
 	//nolint:gosec
-	return af, ioutil.WriteFile(dest, body, 0644)
+	return af, os.WriteFile(dest, body, 0644)
 }
 
 // ExportFromAppFile exports Application from appfile object
@@ -450,7 +449,7 @@ func (o *AppfileOptions) BaseAppFileRun(result *BuildResult, data []byte, args c
 		return err
 	}
 
-	if err := ioutil.WriteFile(deployFilePath, data, 0600); err != nil {
+	if err := os.WriteFile(deployFilePath, data, 0600); err != nil {
 		return errors.Wrap(err, "write deploy config manifests failed")
 	}
 

references/common/capability.go

@@ -21,7 +21,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -108,7 +107,7 @@ func InstallCapability(client client.Client, mapper discoverymapper.DiscoveryMap
 		return err
 	}
 	defDir, _ := system.GetCapabilityDir()
-	fileContent, err := ioutil.ReadFile(filepath.Clean(filepath.Join(repoDir, tp.Name+".yaml")))
+	fileContent, err := os.ReadFile(filepath.Clean(filepath.Join(repoDir, tp.Name+".yaml")))
 	if err != nil {
 		return err
 	}
@@ -384,7 +383,7 @@ func ListCapabilities(userNamespace string, c common.Args, capabilityCenterName
 	if capabilityCenterName != "" {
 		return listCenterCapabilities(userNamespace, c, filepath.Join(dir, capabilityCenterName))
 	}
-	dirs, err := ioutil.ReadDir(dir)
+	dirs, err := os.ReadDir(dir)
 	if err != nil {
 		return capabilityList, err
 	}

references/plugins/capcenter.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"os"
@@ -189,7 +188,7 @@ func LoadRepos() ([]CapCenterConfig, error) {
 	if err != nil {
 		return nil, err
 	}
-	data, err := ioutil.ReadFile(filepath.Clean(config))
+	data, err := os.ReadFile(filepath.Clean(config))
 	if err != nil {
 		if os.IsNotExist(err) {
 			return []CapCenterConfig{defaultRepo}, nil
@@ -224,7 +223,7 @@ func StoreRepos(repos []CapCenterConfig) error {
 		return err
 	}
 	//nolint:gosec
-	return ioutil.WriteFile(config, data, 0644)
+	return os.WriteFile(config, data, 0644)
 }
 
 // ParseCapability will convert config from remote center to capability
@@ -292,7 +291,7 @@ func (g *GithubRegistry) SyncCapabilityFromCenter() error {
 			continue
 		}
 		//nolint:gosec
-		err = ioutil.WriteFile(filepath.Join(repoDir, addon.Name+".yaml"), item.data, 0644)
+		err = os.WriteFile(filepath.Join(repoDir, addon.Name+".yaml"), item.data, 0644)
 		if err != nil {
 			fmt.Printf("write definition %s to %s err %v\n", addon.Name+".yaml", repoDir, err)
 			continue
@@ -333,7 +332,7 @@ func (o *OssRegistry) SyncCapabilityFromCenter() error {
 			continue
 		}
 		//nolint:gosec
-		err = ioutil.WriteFile(filepath.Join(repoDir, addon.Name+".yaml"), item.data, 0644)
+		err = os.WriteFile(filepath.Join(repoDir, addon.Name+".yaml"), item.data, 0644)
 		if err != nil {
 			fmt.Printf("write definition %s to %s err %v\n", addon.Name+".yaml", repoDir, err)
 			continue

references/plugins/cluster_test.go

@@ -20,7 +20,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	"cuelang.org/go/cue"
 	"github.com/google/go-cmp/cmp"
@@ -184,13 +184,13 @@ var _ = Describe("test GetCapabilityByName", func() {
 		Expect(k8sClient.Create(ctx, &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: defaultNS}})).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
 		By("create ComponentDefinition")
-		data, _ := ioutil.ReadFile("testdata/componentDef.yaml")
+		data, _ := os.ReadFile("testdata/componentDef.yaml")
 		yaml.Unmarshal(data, &cd1)
 		yaml.Unmarshal(data, &cd2)
-		data2, _ := ioutil.ReadFile("testdata/kube-worker.yaml")
+		data2, _ := os.ReadFile("testdata/kube-worker.yaml")
 		yaml.Unmarshal(data2, &cd3)
 
-		helmYaml, _ := ioutil.ReadFile("testdata/helm.yaml")
+		helmYaml, _ := os.ReadFile("testdata/helm.yaml")
 		yaml.Unmarshal(helmYaml, &cd4)
 
 		cd1.Namespace = ns
@@ -210,10 +210,10 @@ var _ = Describe("test GetCapabilityByName", func() {
 		Expect(k8sClient.Create(ctx, &cd4)).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
 		By("create TraitDefinition")
-		data, _ = ioutil.ReadFile("testdata/manualscalars.yaml")
+		data, _ = os.ReadFile("testdata/manualscalars.yaml")
 		yaml.Unmarshal(data, &td1)
 		yaml.Unmarshal(data, &td2)
-		data3, _ := ioutil.ReadFile("testdata/svcTraitDef.yaml")
+		data3, _ := os.ReadFile("testdata/svcTraitDef.yaml")
 		yaml.Unmarshal(data3, &td3)
 		td1.Namespace = ns
 		td1.Name = trait1
@@ -311,7 +311,7 @@ var _ = Describe("test GetNamespacedCapabilitiesFromCluster", func() {
 		Expect(k8sClient.Create(ctx, &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: defaultNS}})).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
 		By("create ComponentDefinition")
-		data, _ := ioutil.ReadFile("testdata/componentDef.yaml")
+		data, _ := os.ReadFile("testdata/componentDef.yaml")
 		yaml.Unmarshal(data, &cd1)
 		yaml.Unmarshal(data, &cd2)
 		cd1.Namespace = ns
@@ -323,7 +323,7 @@ var _ = Describe("test GetNamespacedCapabilitiesFromCluster", func() {
 		Expect(k8sClient.Create(ctx, &cd2)).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
 		By("create TraitDefinition")
-		data, _ = ioutil.ReadFile("testdata/manualscalars.yaml")
+		data, _ = os.ReadFile("testdata/manualscalars.yaml")
 		yaml.Unmarshal(data, &td1)
 		yaml.Unmarshal(data, &td2)
 		td1.Namespace = ns

references/plugins/local.go

@@ -21,7 +21,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -125,7 +124,7 @@ func loadInstalledCapabilityWithCapName(dir string, capT types.CapType, capName
 
 func loadInstalledCapability(dir string, name string) ([]types.Capability, error) {
 	var tmps []types.Capability
-	files, err := ioutil.ReadDir(dir)
+	files, err := os.ReadDir(dir)
 	if err != nil {
 		if os.IsNotExist(err) {
 			return nil, nil
@@ -139,7 +138,7 @@ func loadInstalledCapability(dir string, name string) ([]types.Capability, error
 		if strings.HasSuffix(f.Name(), ".cue") {
 			continue
 		}
-		data, err := ioutil.ReadFile(filepath.Clean(filepath.Join(dir, f.Name())))
+		data, err := os.ReadFile(filepath.Clean(filepath.Join(dir, f.Name())))
 		if err != nil {
 			fmt.Printf("read file %s err %v\n", f.Name(), err)
 			continue
@@ -192,7 +191,7 @@ func SinkTemp2Local(templates []types.Capability, dir string) int {
 			continue
 		}
 		//nolint:gosec
-		err = ioutil.WriteFile(filepath.Join(subDir, tmp.Name), data, 0644)
+		err = os.WriteFile(filepath.Join(subDir, tmp.Name), data, 0644)
 		if err != nil {
 			fmt.Printf("sync %s err: %v\n", tmp.Name, err)
 			continue
@@ -240,7 +239,7 @@ func RemoveLegacyTemps(retainedTemps []types.Capability, dir string) int {
 // LoadCapabilityFromSyncedCenter will load capability from dir
 func LoadCapabilityFromSyncedCenter(mapper discoverymapper.DiscoveryMapper, dir string) ([]types.Capability, error) {
 	var tmps []types.Capability
-	files, err := ioutil.ReadDir(dir)
+	files, err := os.ReadDir(dir)
 	if err != nil {
 		if os.IsNotExist(err) {
 			return nil, nil
@@ -254,7 +253,7 @@ func LoadCapabilityFromSyncedCenter(mapper discoverymapper.DiscoveryMapper, dir
 		if strings.HasSuffix(f.Name(), ".cue") {
 			continue
 		}
-		data, err := ioutil.ReadFile(filepath.Clean(filepath.Join(dir, f.Name())))
+		data, err := os.ReadFile(filepath.Clean(filepath.Join(dir, f.Name())))
 		if err != nil {
 			fmt.Printf("read file %s err %v\n", f.Name(), err)
 			continue

references/plugins/references.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -668,7 +667,7 @@ func (ref *MarkdownReference) generateConflictWithAndMore(capabilityName string,
 	if err != nil {
 		return "", fmt.Errorf("failed to locate conflictWith file: %w", err)
 	}
-	data, err := ioutil.ReadFile(filepath.Clean(conflictWithFile))
+	data, err := os.ReadFile(filepath.Clean(conflictWithFile))
 	if err != nil {
 		return "", err
 	}

references/plugins/registry.go

@@ -21,7 +21,7 @@ import (
 	"encoding/base64"
 	"encoding/xml"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"path"
@@ -179,7 +179,7 @@ func (o OssRegistry) GetCap(addonName string) (types.Capability, []byte, error)
 	if err != nil {
 		return types.Capability{}, nil, err
 	}
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	_ = resp.Body.Close()
 	if err != nil {
 		return types.Capability{}, nil, err
@@ -224,7 +224,7 @@ func (o OssRegistry) getRegFiles() ([]RegistryFile, error) {
 	if err != nil {
 		return []RegistryFile{}, err
 	}
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	_ = resp.Body.Close()
 	if err != nil {
 		return []RegistryFile{}, err
@@ -248,7 +248,7 @@ func (o OssRegistry) getRegFiles() ([]RegistryFile, error) {
 			fmt.Printf("[WARN] %s download fail\n", fileName)
 			continue
 		}
-		data, _ := ioutil.ReadAll(resp.Body)
+		data, _ := io.ReadAll(resp.Body)
 		_ = resp.Body.Close()
 		rf := RegistryFile{
 			data: data,
@@ -291,7 +291,7 @@ func (l LocalRegistry) ListCaps() ([]types.Capability, error) {
 	capas := make([]types.Capability, 0)
 	for _, file := range files {
 		// nolint:gosec
-		data, err := ioutil.ReadFile(file)
+		data, err := os.ReadFile(file)
 		if err != nil {
 			return nil, err
 		}

references/plugins/suit_test.go

@@ -18,7 +18,6 @@ package plugins
 
 import (
 	"context"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -96,7 +95,7 @@ var _ = BeforeSuite(func(done Done) {
 
 	Expect(k8sClient.Create(ctx, &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: DefinitionNamespace}})).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
-	workloaddata, err := ioutil.ReadFile("testdata/workloadDef.yaml")
+	workloaddata, err := os.ReadFile("testdata/workloadDef.yaml")
 	Expect(err).Should(BeNil())
 
 	Expect(yaml.Unmarshal(workloaddata, &wd)).Should(BeNil())
@@ -105,7 +104,7 @@ var _ = BeforeSuite(func(done Done) {
 	logf.Log.Info("Creating workload definition", "data", wd)
 	Expect(k8sClient.Create(ctx, &wd)).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
-	componentdata, err := ioutil.ReadFile("testdata/componentDef.yaml")
+	componentdata, err := os.ReadFile("testdata/componentDef.yaml")
 	Expect(err).Should(BeNil())
 
 	Expect(yaml.Unmarshal(componentdata, &cd)).Should(BeNil())
@@ -114,7 +113,7 @@ var _ = BeforeSuite(func(done Done) {
 	logf.Log.Info("Creating component definition", "data", cd)
 	Expect(k8sClient.Create(ctx, &cd)).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
-	websvcWorkloadData, err := ioutil.ReadFile("testdata/websvcWorkloadDef.yaml")
+	websvcWorkloadData, err := os.ReadFile("testdata/websvcWorkloadDef.yaml")
 	Expect(err).Should(BeNil())
 
 	Expect(yaml.Unmarshal(websvcWorkloadData, &websvcWD)).Should(BeNil())
@@ -122,7 +121,7 @@ var _ = BeforeSuite(func(done Done) {
 	logf.Log.Info("Creating workload definition whose CUE template from remote", "data", &websvcWD)
 	Expect(k8sClient.Create(ctx, &websvcWD)).Should(SatisfyAny(BeNil(), &util.AlreadyExistMatcher{}))
 
-	websvcComponentDefData, err := ioutil.ReadFile("testdata/websvcComponentDef.yaml")
+	websvcComponentDefData, err := os.ReadFile("testdata/websvcComponentDef.yaml")
 	Expect(err).Should(BeNil())
 
 	Expect(yaml.Unmarshal(websvcComponentDefData, &websvcCD)).Should(BeNil())

test/compatibility-test/convert/main.go

@@ -19,7 +19,6 @@ package main // #nosec
 // generate compatibility testdata
 import (
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -40,7 +39,7 @@ func main() {
 			return nil
 		}
 		/* #nosec */
-		data, err := ioutil.ReadFile(path)
+		data, err := os.ReadFile(path)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, "failed to read file", err)
 			return err
@@ -54,7 +53,7 @@ func main() {
 		}
 		dstpath := dstdir + "/" + fileName
 		/* #nosec */
-		if err = ioutil.WriteFile(dstpath, []byte(newdata), 0644); err != nil {
+		if err = os.WriteFile(dstpath, []byte(newdata), 0644); err != nil {
 			fmt.Fprintln(os.Stderr, "failed to write file:", err)
 			return err
 		}

vela-templates/gen_addons.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -85,7 +84,7 @@ type AddonInfo struct {
 }
 
 func walkAllAddons(path string) ([]string, error) {
-	files, err := ioutil.ReadDir(path)
+	files, err := os.ReadDir(path)
 	if err != nil {
 		return nil, err
 	}
@@ -112,7 +111,7 @@ func newWalkFn(files *[]velaFile) filepath.WalkFunc {
 		if info.IsDir() {
 			return nil
 		}
-		content, err := ioutil.ReadFile(filepath.Clean(path))
+		content, err := os.ReadFile(filepath.Clean(path))
 		if err != nil {
 			return err
 		}