packer: address gosimple lint errors

command/fmt_test.go

@@ -166,7 +166,7 @@ func Test_fmt_pipe(t *testing.T) {
 			p := helperCommand(t, tc.command...)
 			p.Stdin = strings.NewReader(tc.piped)
 			p.Env = append(p.Env, tc.env...)
-			fmt.Println(fmt.Sprintf("Path: %s", p.Path))
+			t.Logf("Path: %s", p.Path)
 			bs, err := p.Output()
 			if err != nil {
 				t.Fatalf("Error occurred running command %v: %s", err, bs)

datasource/http/data.go

@@ -85,7 +85,7 @@ func isContentTypeText(contentType string) bool {
 	allowedContentTypes := []*regexp.Regexp{
 		regexp.MustCompile("^text/.+"),
 		regexp.MustCompile("^application/json$"),
-		regexp.MustCompile("^application/samlmetadata\\+xml"),
+		regexp.MustCompile(`^application/samlmetadata\+xml`),
 	}
 
 	for _, r := range allowedContentTypes {
@@ -131,9 +131,8 @@ func (d *Datasource) Execute() (cty.Value, error) {
 
 	contentType := resp.Header.Get("Content-Type")
 	if contentType == "" || isContentTypeText(contentType) == false {
-		fmt.Println(fmt.Sprintf(
-			"Content-Type is not recognized as a text type, got %q",
-			contentType))
+		fmt.Printf("Content-Type is not recognized as a text type, got %q\n",
+			contentType)
 		fmt.Println("If the content is binary data, Packer may not properly handle the contents of the response.")
 	}
 

fix/fixer_comm_config.go

@@ -15,7 +15,7 @@ type FixerCommConfig struct{}
 
 func (FixerCommConfig) DeprecatedOptions() map[string][]string {
 	return map[string][]string{
-		"*": []string{"ssh_host_port_min", "ssh_host_port_max",
+		"*": {"ssh_host_port_min", "ssh_host_port_max",
 			"ssh_skip_nat_mapping"},
 	}
 }
@@ -46,14 +46,9 @@ func (FixerCommConfig) Fix(input map[string]interface{}) (map[string]interface{}
 
 		// ssh_host_port_min to host_port_min
 		if _, ok := builders["host_port_min"]; ok {
-
 			// drop ssh_host_port_min if it is also included
-			if _, sshHostPortMinIncluded := builders["ssh_host_port_min"]; sshHostPortMinIncluded {
-				delete(builders, "ssh_host_port_min")
-			}
-
+			delete(builders, "ssh_host_port_min")
 		} else if _, ok := builders["ssh_host_port_min"]; ok {
-
 			// replace ssh_host_port_min with host_port_min
 			sshHostPortMinRaw := builders["ssh_host_port_min"]
 			delete(builders, "ssh_host_port_min")
@@ -62,31 +57,20 @@ func (FixerCommConfig) Fix(input map[string]interface{}) (map[string]interface{}
 
 		// ssh_host_port_max to host_port_max
 		if _, ok := builders["host_port_max"]; ok {
-
 			// drop ssh_host_port_max if it is also included
-			if _, sshHostPortMaxIncluded := builders["ssh_host_port_max"]; sshHostPortMaxIncluded {
-				delete(builders, "ssh_host_port_max")
-			}
-
+			delete(builders, "ssh_host_port_max")
 		} else if _, ok := builders["ssh_host_port_max"]; ok {
-
 			// replace ssh_host_port_max with host_port_max
 			sshHostPortMaxRaw := builders["ssh_host_port_max"]
 			delete(builders, "ssh_host_port_max")
 			builders["host_port_max"] = sshHostPortMaxRaw
-
 		}
 
 		// ssh_skip_nat_mapping to skip_nat_mapping
 		if _, ok := builders["skip_nat_mapping"]; ok {
-
 			// drop ssh_skip_nat_mapping if it is also included
-			if _, sshSkipNatMappingIncluded := builders["ssh_skip_nat_mapping"]; sshSkipNatMappingIncluded {
-				delete(builders, "ssh_skip_nat_mapping")
-			}
-
+			delete(builders, "ssh_skip_nat_mapping")
 		} else if _, ok := builders["ssh_skip_nat_mapping"]; ok {
-
 			// replace ssh_skip_nat_mapping with skip_nat_mapping
 			sshSkipNatMappingRaw := builders["ssh_skip_nat_mapping"]
 			sshSkipNatMappingBool, ok := sshSkipNatMappingRaw.(bool)

fix/fixer_galaxy_command.go

@@ -13,7 +13,7 @@ type FixerGalaxyCommand struct{}
 
 func (FixerGalaxyCommand) DeprecatedOptions() map[string][]string {
 	return map[string][]string{
-		"ansible": []string{"galaxycommand"},
+		"ansible": {"galaxycommand"},
 	}
 }
 
@@ -40,12 +40,8 @@ func (FixerGalaxyCommand) Fix(input map[string]interface{}) (map[string]interfac
 		}
 
 		if _, ok := provisioners["galaxy_command"]; ok {
-
 			// drop galaxycommand if it is also included
-			if _, galaxyCommandIncluded := provisioners["galaxycommand"]; galaxyCommandIncluded {
-				delete(provisioners, "galaxycommand")
-			}
-
+			delete(provisioners, "galaxycommand")
 		} else {
 
 			// replace galaxycommand with galaxy_command if it exists

fix/fixer_ssh_timeout.go

@@ -12,7 +12,7 @@ type FixerSSHTimout struct{}
 
 func (FixerSSHTimout) DeprecatedOptions() map[string][]string {
 	return map[string][]string{
-		"*": []string{"ssh_wait_timeout"},
+		"*": {"ssh_wait_timeout"},
 	}
 }
 
@@ -35,12 +35,8 @@ func (FixerSSHTimout) Fix(input map[string]interface{}) (map[string]interface{},
 		}
 
 		if _, ok := builders["ssh_timeout"]; ok {
-
 			// drop ssh_wait_timeout if it is also included
-			if _, sshWaitTimeoutIncluded := builders["ssh_wait_timeout"]; sshWaitTimeoutIncluded {
-				delete(builders, "ssh_wait_timeout")
-			}
-
+			delete(builders, "ssh_wait_timeout")
 		} else {
 
 			// replace ssh_wait_timeout with ssh_timeout if it exists

packer/core.go

@@ -891,7 +891,7 @@ func (c *Core) renderVarsRecursively() (*interpolate.Context, error) {
 		for _, kv := range sortedMap {
 			// Interpolate the default
 			renderedV, err := interpolate.RenderRegex(kv.Value, ctx, renderFilter)
-			switch err.(type) {
+			switch err := err.(type) {
 			case nil:
 				// We only get here if interpolation has succeeded, so something is
 				// different in this loop than in the last one.
@@ -910,8 +910,7 @@ func (c *Core) renderVarsRecursively() (*interpolate.Context, error) {
 					shouldRetry = true
 				}
 			case ttmp.ExecError:
-				castError := err.(ttmp.ExecError)
-				if strings.Contains(castError.Error(), interpolate.ErrVariableNotSetString) {
+				if strings.Contains(err.Error(), interpolate.ErrVariableNotSetString) {
 					shouldRetry = true
 					failedInterpolation = fmt.Sprintf(`"%s": "%s"; error: %s`, kv.Key, kv.Value, err)
 				} else {

packer/plugin-getter/plugins.go

@@ -1022,6 +1022,6 @@ func init() {
 	// Should never error if both components are set
 	localAPIVersion, err = NewAPIVersion(fmt.Sprintf("x%s.%s", pluginsdk.APIVersionMajor, pluginsdk.APIVersionMinor))
 	if err != nil {
-		panic(fmt.Sprintf("malformed API version in Packer. This is a programming error, please open an error to report it."))
+		panic("malformed API version in Packer. This is a programming error, please open an error to report it.")
 	}
 }

post-processor/compress/post-processor.go

@@ -306,7 +306,6 @@ func (config *Config) detectFromFilename() {
 	// We didn't match a known compression format. Default to tar + pgzip
 	config.Algorithm = "pgzip"
 	config.Archive = "tar"
-	return
 }
 
 func makeBGZFWriter(output io.WriteCloser, compressionLevel int) (io.WriteCloser, error) {

provisioner/shell/provisioner.go

@@ -372,10 +372,7 @@ func (p *Provisioner) Provision(ctx context.Context, ui packersdk.Ui, comm packe
 
 	if p.config.PauseAfter != 0 {
 		ui.Say(fmt.Sprintf("Pausing %s after this provisioner...", p.config.PauseAfter))
-		select {
-		case <-time.After(p.config.PauseAfter):
-			return nil
-		}
+		time.Sleep(p.config.PauseAfter)
 	}
 
 	return nil

provisioner/windows-restart/provisioner_test.go

@@ -210,17 +210,15 @@ func TestProvision_waitForRestartTimeout(t *testing.T) {
 
 	// Block until cancel comes through
 	waitForCommunicator = func(context.Context, *Provisioner) error {
-		for {
-			select {
-			case <-waitDone:
-				waitContinue <- true
-			}
+		for range waitDone {
 		}
+		waitContinue <- true
+		return nil
 	}
 
 	go func() {
 		err = p.Provision(context.Background(), ui, comm, make(map[string]interface{}))
-		waitDone <- true
+		close(waitDone)
 	}()
 	<-waitContinue