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authorBrent Baude <bbaude@redhat.com>2020-04-04 13:59:55 -0500
committerBrent Baude <bbaude@redhat.com>2020-04-06 12:12:59 -0500
commitb22254dc8bfdea5153761e93298182286f874bac (patch)
tree16ff841496724a6b600824d06900a075d429e7dc /pkg/ps/ps.go
parente318b09b6800ddb013ddf3b9a2fb99ebc55bd920 (diff)
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podmanv2 ps
add the ability to list containers Signed-off-by: Brent Baude <bbaude@redhat.com>
Diffstat (limited to 'pkg/ps/ps.go')
-rw-r--r--pkg/ps/ps.go189
1 files changed, 189 insertions, 0 deletions
diff --git a/pkg/ps/ps.go b/pkg/ps/ps.go
new file mode 100644
index 000000000..58fcc2c21
--- /dev/null
+++ b/pkg/ps/ps.go
@@ -0,0 +1,189 @@
+package ps
+
+import (
+ "path/filepath"
+ "sort"
+ "strconv"
+ "time"
+
+ "github.com/containers/libpod/cmd/podman/shared"
+ "github.com/containers/libpod/libpod"
+ "github.com/containers/libpod/libpod/define"
+ lpfilters "github.com/containers/libpod/libpod/filters"
+ "github.com/containers/libpod/pkg/domain/entities"
+ "github.com/pkg/errors"
+ "github.com/sirupsen/logrus"
+)
+
+func GetContainerLists(runtime *libpod.Runtime, options entities.ContainerListOptions) ([]entities.ListContainer, error) {
+ var (
+ filterFuncs []libpod.ContainerFilter
+ pss []entities.ListContainer
+ )
+ all := options.All
+ if len(options.Filters) > 0 {
+ for k, v := range options.Filters {
+ for _, val := range v {
+ generatedFunc, err := lpfilters.GenerateContainerFilterFuncs(k, val, runtime)
+ if err != nil {
+ return nil, err
+ }
+ filterFuncs = append(filterFuncs, generatedFunc)
+ }
+ }
+ }
+
+ // Docker thinks that if status is given as an input, then we should override
+ // the all setting and always deal with all containers.
+ if len(options.Filters["status"]) > 0 {
+ all = true
+ }
+ if !all {
+ runningOnly, err := lpfilters.GenerateContainerFilterFuncs("status", define.ContainerStateRunning.String(), runtime)
+ if err != nil {
+ return nil, err
+ }
+ filterFuncs = append(filterFuncs, runningOnly)
+ }
+
+ cons, err := runtime.GetContainers(filterFuncs...)
+ if err != nil {
+ return nil, err
+ }
+ if options.Last > 0 {
+ // Sort the containers we got
+ sort.Sort(entities.SortCreateTime{SortContainers: cons})
+ // we should perform the lopping before we start getting
+ // the expensive information on containers
+ if options.Last < len(cons) {
+ cons = cons[len(cons)-options.Last:]
+ }
+ }
+ for _, con := range cons {
+ listCon, err := ListContainerBatch(runtime, con, options)
+ if err != nil {
+ return nil, err
+ }
+ pss = append(pss, listCon)
+
+ }
+ return pss, nil
+}
+
+// BatchContainerOp is used in ps to reduce performance hits by "batching"
+// locks.
+func ListContainerBatch(rt *libpod.Runtime, ctr *libpod.Container, opts entities.ContainerListOptions) (entities.ListContainer, error) {
+ var (
+ conConfig *libpod.ContainerConfig
+ conState define.ContainerStatus
+ err error
+ exitCode int32
+ exited bool
+ pid int
+ size *shared.ContainerSize
+ startedTime time.Time
+ exitedTime time.Time
+ cgroup, ipc, mnt, net, pidns, user, uts string
+ )
+
+ batchErr := ctr.Batch(func(c *libpod.Container) error {
+ conConfig = c.Config()
+ conState, err = c.State()
+ if err != nil {
+ return errors.Wrapf(err, "unable to obtain container state")
+ }
+
+ exitCode, exited, err = c.ExitCode()
+ if err != nil {
+ return errors.Wrapf(err, "unable to obtain container exit code")
+ }
+ startedTime, err = c.StartedTime()
+ if err != nil {
+ logrus.Errorf("error getting started time for %q: %v", c.ID(), err)
+ }
+ exitedTime, err = c.FinishedTime()
+ if err != nil {
+ logrus.Errorf("error getting exited time for %q: %v", c.ID(), err)
+ }
+
+ if !opts.Size && !opts.Namespace {
+ return nil
+ }
+
+ if opts.Namespace {
+ pid, err = c.PID()
+ if err != nil {
+ return errors.Wrapf(err, "unable to obtain container pid")
+ }
+ ctrPID := strconv.Itoa(pid)
+ cgroup, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "cgroup"))
+ ipc, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "ipc"))
+ mnt, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "mnt"))
+ net, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "net"))
+ pidns, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "pid"))
+ user, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "user"))
+ uts, _ = shared.GetNamespaceInfo(filepath.Join("/proc", ctrPID, "ns", "uts"))
+ }
+ if opts.Size {
+ size = new(shared.ContainerSize)
+
+ rootFsSize, err := c.RootFsSize()
+ if err != nil {
+ logrus.Errorf("error getting root fs size for %q: %v", c.ID(), err)
+ }
+
+ rwSize, err := c.RWSize()
+ if err != nil {
+ logrus.Errorf("error getting rw size for %q: %v", c.ID(), err)
+ }
+
+ size.RootFsSize = rootFsSize
+ size.RwSize = rwSize
+ }
+ return nil
+ })
+
+ if batchErr != nil {
+ return entities.ListContainer{}, batchErr
+ }
+
+ ps := entities.ListContainer{
+ Command: conConfig.Command,
+ Created: conConfig.CreatedTime.Unix(),
+ Exited: exited,
+ ExitCode: exitCode,
+ ExitedAt: exitedTime.Unix(),
+ ID: conConfig.ID,
+ Image: conConfig.RootfsImageName,
+ IsInfra: conConfig.IsInfra,
+ Labels: conConfig.Labels,
+ Mounts: ctr.UserVolumes(),
+ Names: []string{conConfig.Name},
+ Pid: pid,
+ Pod: conConfig.Pod,
+ Ports: conConfig.PortMappings,
+ Size: size,
+ StartedAt: startedTime.Unix(),
+ State: conState.String(),
+ }
+ if opts.Pod && len(conConfig.Pod) > 0 {
+ pod, err := rt.GetPod(conConfig.Pod)
+ if err != nil {
+ return entities.ListContainer{}, err
+ }
+ ps.PodName = pod.Name()
+ }
+
+ if opts.Namespace {
+ ps.Namespaces = entities.ListContainerNamespaces{
+ Cgroup: cgroup,
+ IPC: ipc,
+ MNT: mnt,
+ NET: net,
+ PIDNS: pidns,
+ User: user,
+ UTS: uts,
+ }
+ }
+ return ps, nil
+}