Merge pull request #3552 from baude/golangcilint2

golangci-lint pass number 2

cmd/podman/pod_ps.go

@@ -552,9 +552,6 @@ func generatePodPsOutput(pods []*adapter.Pod, opts podPsOptions) error {
 
 	switch opts.Format {
 	case formats.JSONString:
-		if err != nil {
-			return errors.Wrapf(err, "unable to create JSON for output")
-		}
 		out = formats.JSONStructArray{Output: podPsToGeneric([]podPsTemplateParams{}, psOutput)}
 	default:
 		psOutput, err := getPodTemplateOutput(psOutput, opts)

cmd/podman/ps.go

@@ -319,6 +319,9 @@ func psDisplay(c *cliconfig.PsValues, runtime *adapter.LocalRuntime) error {
 	}
 
 	pss, err := runtime.Ps(c, opts)
+	if err != nil {
+		return err
+	}
 	// Here and down
 	if opts.Sort != "" {
 		pss, err = sortPsOutput(opts.Sort, pss)
@@ -376,8 +379,8 @@ func psDisplay(c *cliconfig.PsValues, runtime *adapter.LocalRuntime) error {
 					size = units.HumanSizeWithPrecision(0, 0)
 				} else {
 					size = units.HumanSizeWithPrecision(float64(container.Size.RwSize), 3) + " (virtual " + units.HumanSizeWithPrecision(float64(container.Size.RootFsSize), 3) + ")"
-					fmt.Fprintf(w, "\t%s", size)
 				}
+				fmt.Fprintf(w, "\t%s", size)
 			}
 
 		} else {

cmd/podman/shared/container.go

@@ -305,7 +305,7 @@ func generateContainerFilterFuncs(filter, filterValue string, r *libpod.Runtime)
 		}
 		return func(c *libpod.Container) bool {
 			ec, exited, err := c.ExitCode()
-			if ec == int32(exitCode) && err == nil && exited == true {
+			if ec == int32(exitCode) && err == nil && exited {
 				return true
 			}
 			return false
@@ -611,7 +611,7 @@ func getNamespaceInfo(path string) (string, error) {
 
 // getStrFromSquareBrackets gets the string inside [] from a string
 func getStrFromSquareBrackets(cmd string) string {
-	reg, err := regexp.Compile(".*\\[|\\].*")
+	reg, err := regexp.Compile(`.*\[|\].*`)
 	if err != nil {
 		return ""
 	}

cmd/podman/shared/create.go

@@ -93,9 +93,8 @@ func CreateContainer(ctx context.Context, c *GenericCLIResults, runtime *libpod.
 			imageName = newImage.ID()
 		}
 
-		var healthCheckCommandInput string
 		// if the user disabled the healthcheck with "none", we skip adding it
-		healthCheckCommandInput = c.String("healthcheck-command")
+		healthCheckCommandInput := c.String("healthcheck-command")
 
 		// the user didnt disable the healthcheck but did pass in a healthcheck command
 		// now we need to make a healthcheck from the commandline input

cmd/podman/shared/create_cli.go

@@ -133,7 +133,7 @@ func verifyContainerResources(config *cc.CreateConfig, update bool) ([]string, e
 	if config.Resources.KernelMemory > 0 && config.Resources.KernelMemory < linuxMinMemory {
 		return warnings, fmt.Errorf("minimum kernel memory limit allowed is 4MB")
 	}
-	if config.Resources.DisableOomKiller == true && !sysInfo.OomKillDisable {
+	if config.Resources.DisableOomKiller && !sysInfo.OomKillDisable {
 		// only produce warnings if the setting wasn't to *disable* the OOM Kill; no point
 		// warning the caller if they already wanted the feature to be off
 		warnings = addWarning(warnings, "Your kernel does not support OomKillDisable. OomKillDisable discarded.")

cmd/podman/stats.go

@@ -101,9 +101,8 @@ func statsCmd(c *cliconfig.StatsValues) error {
 	}
 
 	var ctrs []*libpod.Container
-	var containerFunc func() ([]*libpod.Container, error)
 
-	containerFunc = runtime.GetRunningContainers
+	containerFunc := runtime.GetRunningContainers
 	if len(c.InputArgs) > 0 {
 		containerFunc = func() ([]*libpod.Container, error) { return runtime.GetContainersByList(c.InputArgs) }
 	} else if latest {

cmd/podman/tree.go

@@ -107,7 +107,7 @@ func printImageChildren(layerMap map[string]*image.LayerInfo, layerID string, pr
 	if !ok {
 		return fmt.Errorf("lookup error: layerid  %s, not found", layerID)
 	}
-	fmt.Printf(prefix)
+	fmt.Print(prefix)
 
 	//initialize intend with middleItem to reduce middleItem checks.
 	intend := middleItem

libpod/container.go

@@ -639,32 +639,23 @@ func (c *Container) HostsAdd() []string {
 // trigger some OCI hooks.
 func (c *Container) UserVolumes() []string {
 	volumes := make([]string, 0, len(c.config.UserVolumes))
-	for _, vol := range c.config.UserVolumes {
-		volumes = append(volumes, vol)
-	}
-
+	volumes = append(volumes, c.config.UserVolumes...)
 	return volumes
 }
 
 // Entrypoint is the container's entrypoint.
 // This is not added to the spec, but is instead used during image commit.
 func (c *Container) Entrypoint() []string {
 	entrypoint := make([]string, 0, len(c.config.Entrypoint))
-	for _, str := range c.config.Entrypoint {
-		entrypoint = append(entrypoint, str)
-	}
-
+	entrypoint = append(entrypoint, c.config.Entrypoint...)
 	return entrypoint
 }
 
 // Command is the container's command
 // This is not added to the spec, but is instead used during image commit
 func (c *Container) Command() []string {
 	command := make([]string, 0, len(c.config.Command))
-	for _, str := range c.config.Command {
-		command = append(command, str)
-	}
-
+	command = append(command, c.config.Command...)
 	return command
 }
 

libpod/container_api.go

@@ -277,7 +277,7 @@ func (c *Container) Exec(tty, privileged bool, env, cmd []string, user, workDir
 				break
 			}
 		}
-		if found == true {
+		if found {
 			sessionID = stringid.GenerateNonCryptoID()
 		}
 	}

libpod/container_graph.go

@@ -264,6 +264,4 @@ func startNode(ctx context.Context, node *containerNode, setError bool, ctrError
 	for _, successor := range node.dependedOn {
 		startNode(ctx, successor, ctrErrored, ctrErrors, ctrsVisited, restart)
 	}
-
-	return
 }

libpod/container_inspect.go

@@ -454,9 +454,7 @@ func (c *Container) generateInspectContainerConfig(spec *spec.Spec) (*InspectCon
 	if spec.Process != nil {
 		ctrConfig.Tty = spec.Process.Terminal
 		ctrConfig.Env = []string{}
-		for _, val := range spec.Process.Env {
-			ctrConfig.Env = append(ctrConfig.Env, val)
-		}
+		ctrConfig.Env = append(ctrConfig.Env, spec.Process.Env...)
 		ctrConfig.WorkingDir = spec.Process.Cwd
 	}
 
@@ -466,9 +464,7 @@ func (c *Container) generateInspectContainerConfig(spec *spec.Spec) (*InspectCon
 	// Leave empty is not explicitly overwritten by user
 	if len(c.config.Command) != 0 {
 		ctrConfig.Cmd = []string{}
-		for _, val := range c.config.Command {
-			ctrConfig.Cmd = append(ctrConfig.Cmd, val)
-		}
+		ctrConfig.Cmd = append(ctrConfig.Cmd, c.config.Command...)
 	}
 
 	// Leave empty if not explicitly overwritten by user

libpod/container_internal.go

@@ -815,34 +815,6 @@ func (c *Container) checkDependenciesRunning() ([]string, error) {
 	return notRunning, nil
 }
 
-// Check if a container's dependencies are running
-// Returns a []string containing the IDs of dependencies that are not running
-// Assumes depencies are already locked, and will be passed in
-// Accepts a map[string]*Container containing, at a minimum, the locked
-// dependency containers
-// (This must be a map from container ID to container)
-func (c *Container) checkDependenciesRunningLocked(depCtrs map[string]*Container) ([]string, error) {
-	deps := c.Dependencies()
-	notRunning := []string{}
-
-	for _, dep := range deps {
-		depCtr, ok := depCtrs[dep]
-		if !ok {
-			return nil, errors.Wrapf(define.ErrNoSuchCtr, "container %s depends on container %s but it is not on containers passed to checkDependenciesRunning", c.ID(), dep)
-		}
-
-		if err := c.syncContainer(); err != nil {
-			return nil, err
-		}
-
-		if depCtr.state.State != define.ContainerStateRunning {
-			notRunning = append(notRunning, dep)
-		}
-	}
-
-	return notRunning, nil
-}
-
 func (c *Container) completeNetworkSetup() error {
 	netDisabled, err := c.NetworkDisabled()
 	if err != nil {

libpod/events/filters.go

@@ -1,7 +1,6 @@
 package events
 
 import (
-	"fmt"
 	"strings"
 	"time"
 
@@ -23,7 +22,7 @@ func generateEventFilter(filter, filterValue string) (func(e *Event) bool, error
 		}, nil
 	case "EVENT", "STATUS":
 		return func(e *Event) bool {
-			return fmt.Sprintf("%s", e.Status) == filterValue
+			return string(e.Status) == filterValue
 		}, nil
 	case "IMAGE":
 		return func(e *Event) bool {
@@ -54,7 +53,7 @@ func generateEventFilter(filter, filterValue string) (func(e *Event) bool, error
 		}, nil
 	case "TYPE":
 		return func(e *Event) bool {
-			return fmt.Sprintf("%s", e.Type) == filterValue
+			return string(e.Type) == filterValue
 		}, nil
 	}
 	return nil, errors.Errorf("%s is an invalid filter", filter)

libpod/events/nullout.go

@@ -17,7 +17,6 @@ func (e EventToNull) Read(options ReadOptions) error {
 // NewNullEventer returns a new null eventer.  You should only do this for
 // the purposes on internal libpod testing.
 func NewNullEventer() Eventer {
-	var e Eventer
-	e = EventToNull{}
+	e := EventToNull{}
 	return e
 }

libpod/healthcheck_linux.go

@@ -62,7 +62,7 @@ func (c *Container) createTimer() error {
 	if rootless.IsRootless() {
 		cmd = append(cmd, "--user")
 	}
-	cmd = append(cmd, "--unit", fmt.Sprintf("%s", c.ID()), fmt.Sprintf("--on-unit-inactive=%s", c.HealthCheckConfig().Interval.String()), "--timer-property=AccuracySec=1s", podman, "healthcheck", "run", c.ID())
+	cmd = append(cmd, "--unit", c.ID(), fmt.Sprintf("--on-unit-inactive=%s", c.HealthCheckConfig().Interval.String()), "--timer-property=AccuracySec=1s", podman, "healthcheck", "run", c.ID())
 
 	conn, err := getConnection()
 	if err != nil {

libpod/image/image.go

@@ -461,7 +461,11 @@ func getImageDigest(ctx context.Context, src types.ImageReference, sc *types.Sys
 	if err != nil {
 		return "", err
 	}
-	defer newImg.Close()
+	defer func() {
+		if err := newImg.Close(); err != nil {
+			logrus.Errorf("failed to close image: %q", err)
+		}
+	}()
 	imageDigest := newImg.ConfigInfo().Digest
 	if err = imageDigest.Validate(); err != nil {
 		return "", errors.Wrapf(err, "error getting config info")
@@ -513,7 +517,7 @@ func (i *Image) TagImage(tag string) error {
 	if err := i.reloadImage(); err != nil {
 		return err
 	}
-	defer i.newImageEvent(events.Tag)
+	i.newImageEvent(events.Tag)
 	return nil
 }
 
@@ -538,7 +542,7 @@ func (i *Image) UntagImage(tag string) error {
 	if err := i.reloadImage(); err != nil {
 		return err
 	}
-	defer i.newImageEvent(events.Untag)
+	i.newImageEvent(events.Untag)
 	return nil
 }
 
@@ -574,7 +578,11 @@ func (i *Image) PushImageToReference(ctx context.Context, dest types.ImageRefere
 	if err != nil {
 		return err
 	}
-	defer policyContext.Destroy()
+	defer func() {
+		if err := policyContext.Destroy(); err != nil {
+			logrus.Errorf("failed to destroy policy context: %q", err)
+		}
+	}()
 
 	// Look up the source image, expecting it to be in local storage
 	src, err := is.Transport.ParseStoreReference(i.imageruntime.store, i.ID())
@@ -588,7 +596,7 @@ func (i *Image) PushImageToReference(ctx context.Context, dest types.ImageRefere
 	if err != nil {
 		return errors.Wrapf(err, "Error copying image to the remote destination")
 	}
-	defer i.newImageEvent(events.Push)
+	i.newImageEvent(events.Push)
 	return nil
 }
 
@@ -984,19 +992,23 @@ func (ir *Runtime) Import(ctx context.Context, path, reference string, writer io
 	if err != nil {
 		return nil, err
 	}
-	defer policyContext.Destroy()
+	defer func() {
+		if err := policyContext.Destroy(); err != nil {
+			logrus.Errorf("failed to destroy policy context: %q", err)
+		}
+	}()
 	copyOptions := getCopyOptions(sc, writer, nil, nil, signingOptions, "", nil)
 	dest, err := is.Transport.ParseStoreReference(ir.store, reference)
 	if err != nil {
-		errors.Wrapf(err, "error getting image reference for %q", reference)
+		return nil, errors.Wrapf(err, "error getting image reference for %q", reference)
 	}
 	_, err = cp.Image(ctx, policyContext, dest, src, copyOptions)
 	if err != nil {
 		return nil, err
 	}
 	newImage, err := ir.NewFromLocal(reference)
 	if err == nil {
-		defer newImage.newImageEvent(events.Import)
+		newImage.newImageEvent(events.Import)
 	}
 	return newImage, err
 }
@@ -1339,7 +1351,7 @@ func (i *Image) Save(ctx context.Context, source, format, output string, moreTag
 	if err := i.PushImageToReference(ctx, destRef, manifestType, "", "", writer, compress, SigningOptions{}, &DockerRegistryOptions{}, additionaltags); err != nil {
 		return errors.Wrapf(err, "unable to save %q", source)
 	}
-	defer i.newImageEvent(events.Save)
+	i.newImageEvent(events.Save)
 	return nil
 }
 

libpod/image/pull.go

@@ -249,7 +249,11 @@ func (ir *Runtime) doPullImage(ctx context.Context, sc *types.SystemContext, goa
 	if err != nil {
 		return nil, err
 	}
-	defer policyContext.Destroy()
+	defer func() {
+		if err := policyContext.Destroy(); err != nil {
+			logrus.Errorf("failed to destroy policy context: %q", err)
+		}
+	}()
 
 	systemRegistriesConfPath := registries.SystemRegistriesConfPath()
 
@@ -304,7 +308,7 @@ func (ir *Runtime) doPullImage(ctx context.Context, sc *types.SystemContext, goa
 		return nil, pullErrors
 	}
 	if len(images) > 0 {
-		defer ir.newImageEvent(events.Pull, images[0])
+		ir.newImageEvent(events.Pull, images[0])
 	}
 	return images, nil
 }

libpod/kube.go

@@ -1,7 +1,6 @@
 package libpod
 
 import (
-	"fmt"
 	"math/rand"
 	"os"
 	"strconv"
@@ -179,7 +178,7 @@ func addContainersAndVolumesToPodObject(containers []v1.Container, volumes []v1.
 	labels["app"] = removeUnderscores(podName)
 	om := v12.ObjectMeta{
 		// The name of the pod is container_name-libpod
-		Name:   fmt.Sprintf("%s", removeUnderscores(podName)),
+		Name:   removeUnderscores(podName),
 		Labels: labels,
 		// CreationTimestamp seems to be required, so adding it; in doing so, the timestamp
 		// will reflect time this is run (not container create time) because the conversion

libpod/logs/log.go

@@ -156,8 +156,5 @@ func NewLogLine(line string) (*LogLine, error) {
 
 // Partial returns a bool if the log line is a partial log type
 func (l *LogLine) Partial() bool {
-	if l.ParseLogType == PartialLogType {
-		return true
-	}
-	return false
+	return l.ParseLogType == PartialLogType
 }