package main import ( "fmt" "reflect" "sort" "strconv" "strings" "time" "github.com/containers/libpod/cmd/podman/formats" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/containers/libpod/cmd/podman/shared" "github.com/containers/libpod/libpod" "github.com/containers/libpod/pkg/util" "github.com/cri-o/ocicni/pkg/ocicni" "github.com/docker/go-units" "github.com/pkg/errors" "github.com/sirupsen/logrus" "github.com/urfave/cli" "k8s.io/apimachinery/pkg/fields" ) const mountTruncLength = 12 type psTemplateParams struct { ID string Image string Command string CreatedAtTime time.Time Created string Status string Ports string Size string Names string Labels string Mounts string PID int Cgroup string IPC string MNT string NET string PIDNS string User string UTS string Pod string IsInfra bool } // psJSONParams is used as a base structure for the psParams // If template output is requested, psJSONParams will be converted to // psTemplateParams. // psJSONParams will be populated by data from libpod.Container, // the members of the struct are the sama data types as their sources. type psJSONParams struct { ID string `json:"id"` Image string `json:"image"` ImageID string `json:"image_id"` Command []string `json:"command"` ExitCode int32 `json:"exitCode"` Exited bool `json:"exited"` CreatedAt time.Time `json:"createdAt"` StartedAt time.Time `json:"startedAt"` ExitedAt time.Time `json:"exitedAt"` Status string `json:"status"` PID int `json:"PID"` Ports []ocicni.PortMapping `json:"ports"` Size *shared.ContainerSize `json:"size,omitempty"` Names string `json:"names"` Labels fields.Set `json:"labels"` Mounts []string `json:"mounts"` ContainerRunning bool `json:"ctrRunning"` Namespaces *shared.Namespace `json:"namespace,omitempty"` Pod string `json:"pod,omitempty"` IsInfra bool `json:"infra"` } // Type declaration and functions for sorting the PS output type psSorted []psJSONParams func (a psSorted) Len() int { return len(a) } func (a psSorted) Swap(i, j int) { a[i], a[j] = a[j], a[i] } type psSortedCommand struct{ psSorted } func (a psSortedCommand) Less(i, j int) bool { return strings.Join(a.psSorted[i].Command, " ") < strings.Join(a.psSorted[j].Command, " ") } type psSortedCreated struct{ psSorted } func (a psSortedCreated) Less(i, j int) bool { return a.psSorted[i].CreatedAt.After(a.psSorted[j].CreatedAt) } type psSortedId struct{ psSorted } func (a psSortedId) Less(i, j int) bool { return a.psSorted[i].ID < a.psSorted[j].ID } type psSortedImage struct{ psSorted } func (a psSortedImage) Less(i, j int) bool { return a.psSorted[i].Image < a.psSorted[j].Image } type psSortedNames struct{ psSorted } func (a psSortedNames) Less(i, j int) bool { return a.psSorted[i].Names < a.psSorted[j].Names } type psSortedPod struct{ psSorted } func (a psSortedPod) Less(i, j int) bool { return a.psSorted[i].Pod < a.psSorted[j].Pod } type psSortedRunningFor struct{ psSorted } func (a psSortedRunningFor) Less(i, j int) bool { return a.psSorted[j].StartedAt.After(a.psSorted[i].StartedAt) } type psSortedStatus struct{ psSorted } func (a psSortedStatus) Less(i, j int) bool { return a.psSorted[i].Status < a.psSorted[j].Status } type psSortedSize struct{ psSorted } func (a psSortedSize) Less(i, j int) bool { if a.psSorted[i].Size == nil || a.psSorted[j].Size == nil { return false } return a.psSorted[i].Size.RootFsSize < a.psSorted[j].Size.RootFsSize } var ( psFlags = []cli.Flag{ cli.BoolFlag{ Name: "all, a", Usage: "Show all the containers, default is only running containers", }, cli.StringFlag{ Name: "filter, f", Usage: "Filter output based on conditions given", }, cli.StringFlag{ Name: "format", Usage: "Pretty-print containers to JSON or using a Go template", }, cli.IntFlag{ Name: "last, n", Usage: "Print the n last created containers (all states)", Value: -1, }, cli.BoolFlag{ Name: "latest, l", Usage: "Show the latest container created (all states)", }, cli.BoolFlag{ Name: "namespace, ns", Usage: "Display namespace information", }, cli.BoolFlag{ Name: "no-trunc", Usage: "Display the extended information", }, cli.BoolFlag{ Name: "pod", Usage: "Print the ID and name of the pod the containers are associated with", }, cli.BoolFlag{ Name: "quiet, q", Usage: "Print the numeric IDs of the containers only", }, cli.BoolFlag{ Name: "size, s", Usage: "Display the total file sizes", }, cli.StringFlag{ Name: "sort", Usage: "Sort output by command, created, id, image, names, runningfor, size, or status", Value: "created", }, } psDescription = "Prints out information about the containers" psCommand = cli.Command{ Name: "ps", Usage: "List containers", Description: psDescription, Flags: psFlags, Action: psCmd, ArgsUsage: "", UseShortOptionHandling: true, } lsCommand = cli.Command{ Name: "ls", Usage: "List containers", Description: psDescription, Flags: psFlags, Action: psCmd, ArgsUsage: "", UseShortOptionHandling: true, } ) func psCmd(c *cli.Context) error { if err := validateFlags(c, psFlags); err != nil { return err } if err := checkFlagsPassed(c); err != nil { return errors.Wrapf(err, "error with flags passed") } runtime, err := libpodruntime.GetRuntime(c) if err != nil { return errors.Wrapf(err, "error creating libpod runtime") } defer runtime.Shutdown(false) if len(c.Args()) > 0 { return errors.Errorf("too many arguments, ps takes no arguments") } format := genPsFormat(c.String("format"), c.Bool("quiet"), c.Bool("size"), c.Bool("namespace"), c.Bool("pod"), c.Bool("all")) opts := shared.PsOptions{ All: c.Bool("all"), Filter: c.String("filter"), Format: format, Last: c.Int("last"), Latest: c.Bool("latest"), NoTrunc: c.Bool("no-trunc"), Pod: c.Bool("pod"), Quiet: c.Bool("quiet"), Size: c.Bool("size"), Namespace: c.Bool("namespace"), Sort: c.String("sort"), } var filterFuncs []libpod.ContainerFilter // When we are dealing with latest or last=n, we need to // get all containers. if !opts.All && !opts.Latest && opts.Last < 1 { // only get running containers filterFuncs = append(filterFuncs, func(c *libpod.Container) bool { state, _ := c.State() // Don't return infra containers return state == libpod.ContainerStateRunning && !c.IsInfra() }) } if opts.Filter != "" { filters := strings.Split(opts.Filter, ",") for _, f := range filters { filterSplit := strings.SplitN(f, "=", 2) if len(filterSplit) < 2 { return errors.Errorf("filter input must be in the form of filter=value: %s is invalid", f) } generatedFunc, err := generateContainerFilterFuncs(filterSplit[0], filterSplit[1], runtime) if err != nil { return errors.Wrapf(err, "invalid filter") } filterFuncs = append(filterFuncs, generatedFunc) } } var outputContainers []*libpod.Container if !opts.Latest { // Get all containers containers, err := runtime.GetContainers(filterFuncs...) if err != nil { return err } // We only want the last few containers if opts.Last > 0 && opts.Last <= len(containers) { return errors.Errorf("--last not yet supported") } else { outputContainers = containers } } else { // Get just the latest container // Ignore filters latestCtr, err := runtime.GetLatestContainer() if err != nil { return err } outputContainers = []*libpod.Container{latestCtr} } return generatePsOutput(outputContainers, opts) } // checkFlagsPassed checks if mutually exclusive flags are passed together func checkFlagsPassed(c *cli.Context) error { // latest, and last are mutually exclusive. if c.Int("last") >= 0 && c.Bool("latest") { return errors.Errorf("last and latest are mutually exclusive") } // Quiet conflicts with size, namespace, and format with a Go template if c.Bool("quiet") { if c.Bool("size") || c.Bool("namespace") || (c.IsSet("format") && c.String("format") != formats.JSONString) { return errors.Errorf("quiet conflicts with size, namespace, and format with go template") } } // Size and namespace conflict with each other if c.Bool("size") && c.Bool("namespace") { return errors.Errorf("size and namespace options conflict") } return nil } func generateContainerFilterFuncs(filter, filterValue string, runtime *libpod.Runtime) (func(container *libpod.Container) bool, error) { switch filter { case "id": return func(c *libpod.Container) bool { return strings.Contains(c.ID(), filterValue) }, nil case "label": var filterArray []string = strings.Split(filterValue, "=") var filterKey string = filterArray[0] if len(filterArray) > 1 { filterValue = filterArray[1] } else { filterValue = "" } return func(c *libpod.Container) bool { for labelKey, labelValue := range c.Labels() { if labelKey == filterKey && ("" == filterValue || labelValue == filterValue) { return true } } return false }, nil case "name": return func(c *libpod.Container) bool { return strings.Contains(c.Name(), filterValue) }, nil case "exited": exitCode, err := strconv.ParseInt(filterValue, 10, 32) if err != nil { return nil, errors.Wrapf(err, "exited code out of range %q", filterValue) } return func(c *libpod.Container) bool { ec, exited, err := c.ExitCode() if ec == int32(exitCode) && err == nil && exited == true { return true } return false }, nil case "status": if !util.StringInSlice(filterValue, []string{"created", "restarting", "running", "paused", "exited", "unknown"}) { return nil, errors.Errorf("%s is not a valid status", filterValue) } return func(c *libpod.Container) bool { status, err := c.State() if err != nil { return false } state := status.String() if status == libpod.ContainerStateConfigured { state = "created" } return state == filterValue }, nil case "ancestor": // This needs to refine to match docker // - ancestor=([:tag]|| ⟨image@digest⟩) - containers created from an image or a descendant. return func(c *libpod.Container) bool { containerConfig := c.Config() if strings.Contains(containerConfig.RootfsImageID, filterValue) || strings.Contains(containerConfig.RootfsImageName, filterValue) { return true } return false }, nil case "before": ctr, err := runtime.LookupContainer(filterValue) if err != nil { return nil, errors.Errorf("unable to find container by name or id of %s", filterValue) } containerConfig := ctr.Config() createTime := containerConfig.CreatedTime return func(c *libpod.Container) bool { cc := c.Config() return createTime.After(cc.CreatedTime) }, nil case "since": ctr, err := runtime.LookupContainer(filterValue) if err != nil { return nil, errors.Errorf("unable to find container by name or id of %s", filterValue) } containerConfig := ctr.Config() createTime := containerConfig.CreatedTime return func(c *libpod.Container) bool { cc := c.Config() return createTime.Before(cc.CreatedTime) }, nil case "volume": //- volume=(|) return func(c *libpod.Container) bool { containerConfig := c.Config() var dest string arr := strings.Split(filterValue, ":") source := arr[0] if len(arr) == 2 { dest = arr[1] } for _, mount := range containerConfig.Spec.Mounts { if dest != "" && (mount.Source == source && mount.Destination == dest) { return true } if dest == "" && mount.Source == source { return true } } return false }, nil } return nil, errors.Errorf("%s is an invalid filter", filter) } // generate the template based on conditions given func genPsFormat(format string, quiet, size, namespace, pod, infra bool) string { if format != "" { // "\t" from the command line is not being recognized as a tab // replacing the string "\t" to a tab character if the user passes in "\t" return strings.Replace(format, `\t`, "\t", -1) } if quiet { return formats.IDString } podappend := "" if pod { podappend = "{{.Pod}}\t" } if namespace { return fmt.Sprintf("table {{.ID}}\t{{.Names}}\t%s{{.PID}}\t{{.Cgroup}}\t{{.IPC}}\t{{.MNT}}\t{{.NET}}\t{{.PIDNS}}\t{{.User}}\t{{.UTS}}", podappend) } format = "table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.Created}}\t{{.Status}}\t{{.Ports}}\t{{.Names}}\t" format += podappend if size { format += "{{.Size}}\t" } if infra { format += "{{.IsInfra}}\t" } return format } func psToGeneric(templParams []psTemplateParams, JSONParams []psJSONParams) (genericParams []interface{}) { if len(templParams) > 0 { for _, v := range templParams { genericParams = append(genericParams, interface{}(v)) } return } for _, v := range JSONParams { genericParams = append(genericParams, interface{}(v)) } return } // generate the accurate header based on template given func (p *psTemplateParams) headerMap() map[string]string { v := reflect.Indirect(reflect.ValueOf(p)) values := make(map[string]string) for i := 0; i < v.NumField(); i++ { key := v.Type().Field(i).Name value := key if value == "ID" { value = "Container" + value } values[key] = strings.ToUpper(splitCamelCase(value)) } return values } func sortPsOutput(sortBy string, psOutput psSorted) (psSorted, error) { switch sortBy { case "id": sort.Sort(psSortedId{psOutput}) case "image": sort.Sort(psSortedImage{psOutput}) case "command": sort.Sort(psSortedCommand{psOutput}) case "runningfor": sort.Sort(psSortedRunningFor{psOutput}) case "status": sort.Sort(psSortedStatus{psOutput}) case "size": sort.Sort(psSortedSize{psOutput}) case "names": sort.Sort(psSortedNames{psOutput}) case "created": sort.Sort(psSortedCreated{psOutput}) case "pod": sort.Sort(psSortedPod{psOutput}) default: return nil, errors.Errorf("invalid option for --sort, options are: command, created, id, image, names, runningfor, size, or status") } return psOutput, nil } // getTemplateOutput returns the modified container information func getTemplateOutput(psParams []psJSONParams, opts shared.PsOptions) ([]psTemplateParams, error) { var ( psOutput []psTemplateParams pod, status, size string ns *shared.Namespace ) // If the user is trying to filter based on size, or opted to sort on size // the size bool must be set. if strings.Contains(opts.Format, ".Size") || opts.Sort == "size" { opts.Size = true } if strings.Contains(opts.Format, ".Pod") || opts.Sort == "pod" { opts.Pod = true } for _, psParam := range psParams { // do we need this? imageName := psParam.Image ctrID := psParam.ID if opts.Namespace { ns = psParam.Namespaces } if opts.Size { if psParam.Size == nil { size = units.HumanSizeWithPrecision(0, 0) } else { size = units.HumanSizeWithPrecision(float64(psParam.Size.RwSize), 3) + " (virtual " + units.HumanSizeWithPrecision(float64(psParam.Size.RootFsSize), 3) + ")" } } if opts.Pod { pod = psParam.Pod } command := strings.Join(psParam.Command, " ") if !opts.NoTrunc { if len(command) > 20 { command = command[:19] + "..." } } ports := portsToString(psParam.Ports) labels := formatLabels(psParam.Labels) switch psParam.Status { case libpod.ContainerStateStopped.String(): exitedSince := units.HumanDuration(time.Since(psParam.ExitedAt)) status = fmt.Sprintf("Exited (%d) %s ago", psParam.ExitCode, exitedSince) case libpod.ContainerStateRunning.String(): status = "Up " + units.HumanDuration(time.Since(psParam.StartedAt)) + " ago" case libpod.ContainerStatePaused.String(): status = "Paused" case libpod.ContainerStateCreated.String(), libpod.ContainerStateConfigured.String(): status = "Created" default: status = "Error" } if !opts.NoTrunc { ctrID = shortID(psParam.ID) pod = shortID(psParam.Pod) } params := psTemplateParams{ ID: ctrID, Image: imageName, Command: command, CreatedAtTime: psParam.CreatedAt, Created: units.HumanDuration(time.Since(psParam.CreatedAt)) + " ago", Status: status, Ports: ports, Size: size, Names: psParam.Names, Labels: labels, Mounts: getMounts(psParam.Mounts, opts.NoTrunc), PID: psParam.PID, Pod: pod, IsInfra: psParam.IsInfra, } if opts.Namespace { params.Cgroup = ns.Cgroup params.IPC = ns.IPC params.MNT = ns.MNT params.NET = ns.NET params.PIDNS = ns.PIDNS params.User = ns.User params.UTS = ns.UTS } psOutput = append(psOutput, params) } return psOutput, nil } // getAndSortJSONOutput returns the container info in its raw, sorted form func getAndSortJSONParams(containers []*libpod.Container, opts shared.PsOptions) ([]psJSONParams, error) { var ( psOutput psSorted ns *shared.Namespace ) for _, ctr := range containers { batchInfo, err := shared.BatchContainerOp(ctr, opts) if err != nil { if errors.Cause(err) == libpod.ErrNoSuchCtr { logrus.Warn(err) continue } return nil, err } if opts.Namespace { ns = shared.GetNamespaces(batchInfo.Pid) } params := psJSONParams{ ID: ctr.ID(), Image: batchInfo.ConConfig.RootfsImageName, ImageID: batchInfo.ConConfig.RootfsImageID, Command: batchInfo.ConConfig.Spec.Process.Args, ExitCode: batchInfo.ExitCode, Exited: batchInfo.Exited, CreatedAt: batchInfo.ConConfig.CreatedTime, StartedAt: batchInfo.StartedTime, ExitedAt: batchInfo.ExitedTime, Status: batchInfo.ConState.String(), PID: batchInfo.Pid, Ports: batchInfo.ConConfig.PortMappings, Size: batchInfo.Size, Names: batchInfo.ConConfig.Name, Labels: batchInfo.ConConfig.Labels, Mounts: batchInfo.ConConfig.UserVolumes, ContainerRunning: batchInfo.ConState == libpod.ContainerStateRunning, Namespaces: ns, Pod: ctr.PodID(), IsInfra: ctr.IsInfra(), } psOutput = append(psOutput, params) } return sortPsOutput(opts.Sort, psOutput) } func generatePsOutput(containers []*libpod.Container, opts shared.PsOptions) error { if len(containers) == 0 && opts.Format != formats.JSONString { return nil } psOutput, err := getAndSortJSONParams(containers, opts) if err != nil { return err } var out formats.Writer switch opts.Format { case formats.JSONString: if err != nil { return errors.Wrapf(err, "unable to create JSON for output") } out = formats.JSONStructArray{Output: psToGeneric([]psTemplateParams{}, psOutput)} default: psOutput, err := getTemplateOutput(psOutput, opts) if err != nil { return errors.Wrapf(err, "unable to create output") } out = formats.StdoutTemplateArray{Output: psToGeneric(psOutput, []psJSONParams{}), Template: opts.Format, Fields: psOutput[0].headerMap()} } return formats.Writer(out).Out() } // getLabels converts the labels to a string of the form "key=value, key2=value2" func formatLabels(labels map[string]string) string { var arr []string if len(labels) > 0 { for key, val := range labels { temp := key + "=" + val arr = append(arr, temp) } return strings.Join(arr, ",") } return "" } // getMounts converts the volumes mounted to a string of the form "mount1, mount2" // it truncates it if noTrunc is false func getMounts(mounts []string, noTrunc bool) string { return strings.Join(getMountsArray(mounts, noTrunc), ",") } func getMountsArray(mounts []string, noTrunc bool) []string { var arr []string if len(mounts) == 0 { return mounts } for _, mount := range mounts { splitArr := strings.Split(mount, ":") if len(splitArr[0]) > mountTruncLength && !noTrunc { arr = append(arr, splitArr[0][:mountTruncLength]+"...") continue } arr = append(arr, splitArr[0]) } return arr } // portsToString converts the ports used to a string of the from "port1, port2" func portsToString(ports []ocicni.PortMapping) string { var portDisplay []string if len(ports) == 0 { return "" } for _, v := range ports { hostIP := v.HostIP if hostIP == "" { hostIP = "0.0.0.0" } portDisplay = append(portDisplay, fmt.Sprintf("%s:%d->%d/%s", hostIP, v.HostPort, v.ContainerPort, v.Protocol)) } return strings.Join(portDisplay, ", ") }