Enable staticcheck linter. Disable check for folder /pkg and /test by now.

Signed-off-by: Xun Jiang <blackpiglet@gmail.com>

.github/workflows/pr-ci-check.yml

@@ -4,6 +4,8 @@ jobs:
   build:
     name: Run CI
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
     steps:
       - name: Set up Go
         uses: actions/setup-go@v2
@@ -27,3 +29,7 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage.out
           verbose: true
+      - name: Run staticcheck
+        uses: dominikh/staticcheck-action@v1.3.0
+        with:
+          version: "2022.1.3"

changelogs/unreleased/5788-blackpiglet

@@ -0,0 +1 @@
+Enable staticcheck linter.

cmd/velero-restore-helper/velero-restore-helper.go

@@ -18,7 +18,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -34,18 +33,16 @@ func main() {
 	defer ticker.Stop()
 
 	for {
-		select {
-		case <-ticker.C:
-			if done() {
-				fmt.Println("All restic restores are done")
-				err := removeFolder()
-				if err != nil {
-					fmt.Println(err)
-				} else {
-					fmt.Println("Done cleanup .velero folder")
-				}
-				return
+		<-ticker.C
+		if done() {
+			fmt.Println("All restic restores are done")
+			err := removeFolder()
+			if err != nil {
+				fmt.Println(err)
+			} else {
+				fmt.Println("Done cleanup .velero folder")
 			}
+			return
 		}
 	}
 }
@@ -54,7 +51,7 @@ func main() {
 // within the .velero/ subdirectory whose name is equal to os.Args[1], or
 // false otherwise
 func done() bool {
-	children, err := ioutil.ReadDir("/restores")
+	children, err := os.ReadDir("/restores")
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "ERROR reading /restores directory: %s\n", err)
 		return false
@@ -84,7 +81,7 @@ func done() bool {
 
 // remove .velero folder
 func removeFolder() error {
-	children, err := ioutil.ReadDir("/restores")
+	children, err := os.ReadDir("/restores")
 	if err != nil {
 		return err
 	}

config/crd/v1/crds/crds.go

@@ -21,7 +21,7 @@ package crds
 import (
 	"bytes"
 	"compress/gzip"
-	"io/ioutil"
+	"io"
 
 	apiextinstall "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/install"
 	apiextv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
@@ -53,7 +53,7 @@ func crds() []*apiextv1.CustomResourceDefinition {
 		if err != nil {
 			panic(err)
 		}
-		bytes, err := ioutil.ReadAll(gzr)
+		bytes, err := io.ReadAll(gzr)
 		if err != nil {
 			panic(err)
 		}

hack/crd-gen/v1/main.go

@@ -24,7 +24,6 @@ import (
 	"compress/gzip"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"os"
 	"text/template"
@@ -41,7 +40,7 @@ package crds
 import (
 	"bytes"
 	"compress/gzip"
-	"io/ioutil"
+	"io"
 
 	apiextinstall "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/install"
 	apiextv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
@@ -65,7 +64,7 @@ func crds() []*apiextv1.CustomResourceDefinition {
 		if err != nil {
 			panic(err)
 		}
-		bytes, err := ioutil.ReadAll(gzr)
+		bytes, err := io.ReadAll(gzr)
 		if err != nil {
 			panic(err)
 		}
@@ -87,7 +86,7 @@ type templateData struct {
 }
 
 func main() {
-	headerBytes, err := ioutil.ReadFile(goHeaderFile)
+	headerBytes, err := os.ReadFile(goHeaderFile)
 	if err != nil {
 		log.Fatalln(err)
 	}
@@ -97,7 +96,7 @@ func main() {
 	}
 
 	// This is relative to config/crd/crds
-	manifests, err := ioutil.ReadDir("../bases")
+	manifests, err := os.ReadDir("../bases")
 	if err != nil {
 		log.Fatalln(err)
 	}

hack/release-tools/chk_version.go

@@ -28,7 +28,7 @@ import (
 //	minor
 //	patch
 //	prerelease (this will be alpha/beta/rc followed by a ".", followed by 1 or more digits (alpha.5)
-var release_regex *regexp.Regexp = regexp.MustCompile("^v(?P<major>[[:digit:]]+)\\.(?P<minor>[[:digit:]]+)\\.(?P<patch>[[:digit:]]+)(-{1}(?P<prerelease>(alpha|beta|rc)\\.[[:digit:]]+))*")
+var release_regex *regexp.Regexp = regexp.MustCompile(`^v(?P<major>[[:digit:]]+)\.(?P<minor>[[:digit:]]+)\.(?P<patch>[[:digit:]]+)(-{1}(?P<prerelease>(alpha|beta|rc)\.[[:digit:]]+))*`)
 
 // This small program exists because checking the VELERO_VERSION rules in bash is difficult, and difficult to test for correctness.
 // Calling it with --verify will verify whether or not the VELERO_VERSION environment variable is a valid version string, without parsing for its components.

internal/hook/item_hook_handler_test.go

@@ -22,7 +22,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
@@ -40,15 +39,6 @@ import (
 	"github.com/vmware-tanzu/velero/pkg/util/collections"
 )
 
-type mockItemHookHandler struct {
-	mock.Mock
-}
-
-func (h *mockItemHookHandler) HandleHooks(log logrus.FieldLogger, groupResource schema.GroupResource, obj runtime.Unstructured, resourceHooks []ResourceHook, phase hookPhase) error {
-	args := h.Called(log, groupResource, obj, resourceHooks, phase)
-	return args.Error(0)
-}
-
 func TestHandleHooksSkips(t *testing.T) {
 	tests := []struct {
 		name          string

internal/hook/wait_exec_hook_handler.go

@@ -119,7 +119,7 @@ func (e *DefaultWaitExecHookHandler) HandleHooks(
 		)
 
 		if newPod.Status.Phase == v1.PodSucceeded || newPod.Status.Phase == v1.PodFailed {
-			err := fmt.Errorf("Pod entered phase %s before some post-restore exec hooks ran", newPod.Status.Phase)
+			err := fmt.Errorf("pod entered phase %s before some post-restore exec hooks ran", newPod.Status.Phase)
 			podLog.Warning(err)
 			cancel()
 			return
@@ -155,7 +155,7 @@ func (e *DefaultWaitExecHookHandler) HandleHooks(
 				)
 				// Check the individual hook's wait timeout is not expired
 				if hook.Hook.WaitTimeout.Duration != 0 && time.Since(waitStart) > hook.Hook.WaitTimeout.Duration {
-					err := fmt.Errorf("Hook %s in container %s expired before executing", hook.HookName, hook.Hook.Container)
+					err := fmt.Errorf("hook %s in container %s expired before executing", hook.HookName, hook.Hook.Container)
 					hookLog.Error(err)
 					if hook.Hook.OnError == velerov1api.HookErrorModeFail {
 						errors = append(errors, err)
@@ -194,7 +194,7 @@ func (e *DefaultWaitExecHookHandler) HandleHooks(
 			handler(newObj)
 		},
 		DeleteFunc: func(obj interface{}) {
-			err := fmt.Errorf("Pod %s deleted before all hooks were executed", kube.NamespaceAndName(pod))
+			err := fmt.Errorf("pod %s deleted before all hooks were executed", kube.NamespaceAndName(pod))
 			log.Error(err)
 			cancel()
 		},
@@ -212,7 +212,7 @@ func (e *DefaultWaitExecHookHandler) HandleHooks(
 			if hook.executed {
 				continue
 			}
-			err := fmt.Errorf("Hook %s in container %s in pod %s not executed: %v", hook.HookName, hook.Hook.Container, kube.NamespaceAndName(pod), ctx.Err())
+			err := fmt.Errorf("hook %s in container %s in pod %s not executed: %v", hook.HookName, hook.Hook.Container, kube.NamespaceAndName(pod), ctx.Err())
 			hookLog := log.WithFields(
 				logrus.Fields{
 					"hookSource": hook.HookSource,

internal/hook/wait_exec_hook_handler_test.go

@@ -465,7 +465,7 @@ func TestWaitExecHandleHooks(t *testing.T) {
 					},
 				}).
 				Result(),
-			expectedErrors: []error{errors.New("Hook my-hook-1 in container container1 in pod default/my-pod not executed: context deadline exceeded")},
+			expectedErrors: []error{errors.New("hook my-hook-1 in container container1 in pod default/my-pod not executed: context deadline exceeded")},
 			byContainer: map[string][]PodExecRestoreHook{
 				"container1": {
 					{
@@ -496,7 +496,7 @@ func TestWaitExecHandleHooks(t *testing.T) {
 					},
 				}).
 				Result(),
-			expectedErrors: []error{errors.New("Hook my-hook-1 in container container1 in pod default/my-pod not executed: context deadline exceeded")},
+			expectedErrors: []error{errors.New("hook my-hook-1 in container container1 in pod default/my-pod not executed: context deadline exceeded")},
 			byContainer: map[string][]PodExecRestoreHook{
 				"container1": {
 					{

internal/storage/storagelocation.go

@@ -71,10 +71,7 @@ func IsReadyToValidate(bslValidationFrequency *metav1.Duration, lastValidationTi
 
 	// We want to validate BSL only if the set validation frequency/ interval has elapsed.
 	nextValidation := lastValidation.Add(validationFrequency) // next validation time: last validation time + validation frequency
-	if time.Now().UTC().Before(nextValidation) {              // ready only when NOW is equal to or after the next validation time
-		return false
-	}
-	return true
+	return !time.Now().UTC().Before(nextValidation)           // ready only when NOW is equal to or after the next validation time
 }
 
 // ListBackupStorageLocations verifies if there are any backup storage locations.

internal/storage/storagelocation_test.go

@@ -163,7 +163,7 @@ func TestListBackupStorageLocations(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			g := NewWithT(t)
 
-			client := fake.NewFakeClientWithScheme(scheme.Scheme, tt.backupLocations)
+			client := fake.NewClientBuilder().WithScheme(scheme.Scheme).WithRuntimeObjects(tt.backupLocations).Build()
 			if tt.expectError {
 				_, err := ListBackupStorageLocations(context.Background(), client, "ns-1")
 				g.Expect(err).NotTo(BeNil())

pkg/staticcheck.conf

@@ -0,0 +1 @@
+checks = []

test/staticcheck.conf

@@ -0,0 +1 @@
+checks = []