lint: Add linter to CI, fix existing lint issues

.github/workflows/ci.yml

@@ -22,3 +22,11 @@ jobs:
           make GOOPTS=-buildvcs=false
           export PATH=$PATH:$HOME/go/bin
           make integration_tests
+      - name: lint
+        run: |
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.58.2
+          export PATH=$PATH:$HOME/go/bin
+          make lint
+      - name: gofmt
+        run: |
+          test -z $(gofmt -l .)

Makefile

@@ -8,6 +8,9 @@ all: out_dir
 out_dir:
 	mkdir -p $(output_dir)
 
+lint:
+	golangci-lint --build-tags $(build_tags) run
+
 integration_tests:
 	ginkgo run -tags $(build_tags) --skip-package test ./...
 

cmd/run.go

@@ -162,7 +162,10 @@ func doRun(flags *cobra.Command, args []string) error {
 			var vmConsoleWg sync.WaitGroup
 			vmConsoleWg.Add(1)
 			go func() {
-				bootcVM.PrintConsole()
+				err := bootcVM.PrintConsole()
+				if err != nil {
+					logrus.Errorf("error printing VM console: %v", err)
+				}
 			}()
 
 			err = bootcVM.WaitForSSHToBeReady()

pkg/vm/vm.go

@@ -92,12 +92,9 @@ type BootcVMCommon struct {
 	cmd           []string
 	pidFile       string
 	imageID       string
-	imageDigest   string
-	noCredentials bool
 	hasCloudInit  bool
 	cloudInitDir  string
 	cloudInitArgs string
-	bootcDisk     bootc.BootcDisk
 	cacheDirLock  utils.CacheLock
 }
 

pkg/vm/vm_test.go

@@ -132,6 +132,7 @@ func deleteAllVMs() {
 
 	var flags libvirt.ConnectListAllDomainsFlags
 	domains, err := conn.ListAllDomains(flags)
+	Expect(err).To(Not(HaveOccurred()))
 	for _, domain := range domains {
 		err = domain.Destroy()
 		Expect(err).To(Not(HaveOccurred()))
@@ -140,11 +141,6 @@ func deleteAllVMs() {
 	}
 }
 
-func deleteCache() {
-	err := os.RemoveAll(testUser.CacheDir())
-	Expect(err).To(Not(HaveOccurred()))
-}
-
 var _ = Describe("VM", func() {
 	AfterEach(func() {
 		deleteAllVMs()

test/e2e/e2e_test.go

@@ -57,7 +57,8 @@ var _ = Describe("E2E", func() {
 			imagesListOutput, _, err := e2e.RunPodman("images", e2e.BaseImage, "--format", "json")
 			Expect(err).To(Not(HaveOccurred()))
 			imagesList := []map[string]interface{}{}
-			json.Unmarshal([]byte(imagesListOutput), &imagesList)
+			err = json.Unmarshal([]byte(imagesListOutput), &imagesList)
+			Expect(err).To(Not(HaveOccurred()))
 			Expect(imagesList).To(HaveLen(1))
 		})
 
@@ -78,7 +79,8 @@ var _ = Describe("E2E", func() {
 
 		It("should start an ssh session into the VM", func() {
 			// Send a command to the VM and check the output
-			vm.SendCommand("echo 'hello'", "hello")
+			err := vm.SendCommand("echo 'hello'", "hello")
+			Expect(err).To(Not(HaveOccurred()))
 			Expect(vm.StdOut[len(vm.StdOut)-1]).To(ContainSubstring("hello"))
 		})
 
@@ -165,7 +167,10 @@ var _ = Describe("E2E", func() {
 
 		AfterAll(func() {
 			vm.StdIn.Close()
-			e2e.Cleanup()
+			err := e2e.Cleanup()
+			if err != nil {
+				Fail(err.Error())
+			}
 		})
 	})
 
@@ -304,7 +309,10 @@ var _ = Describe("E2E", func() {
 			activeVM.StdIn.Close()
 			inactiveVM.StdIn.Close()
 			stoppedVM.StdIn.Close()
-			e2e.Cleanup()
+			err := e2e.Cleanup()
+			if err != nil {
+				Fail(err.Error())
+			}
 		})
 	})
 })

test/e2e/test_vm.go

@@ -50,7 +50,10 @@ func (w *TestVM) WaitForBoot() (err error) {
 
 // SendCommand sends a command to the VM's stdin and waits for the output
 func (w *TestVM) SendCommand(cmd string, output string) (err error) {
-	w.StdIn.Write([]byte(cmd + "\n"))
+	_, err = w.StdIn.Write([]byte(cmd + "\n"))
+	if err != nil {
+		return fmt.Errorf("unable to write to VM stdin: %w", err)
+	}
 
 	timeout := 2 * time.Minute
 	interval := 1 * time.Second