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-rw-r--r--cmd/podmanV2/pods/top.go90
-rw-r--r--libpod/pod_top_linux.go13
-rw-r--r--pkg/bindings/pods/pods.go36
-rw-r--r--pkg/bindings/test/containers_test.go6
-rw-r--r--pkg/bindings/test/pods_test.go30
-rw-r--r--pkg/domain/entities/engine_container.go1
-rw-r--r--pkg/domain/entities/pods.go10
-rw-r--r--pkg/domain/infra/abi/pods.go22
-rw-r--r--pkg/domain/infra/tunnel/pods.go16
9 files changed, 217 insertions, 7 deletions
diff --git a/cmd/podmanV2/pods/top.go b/cmd/podmanV2/pods/top.go
new file mode 100644
index 000000000..5ef282238
--- /dev/null
+++ b/cmd/podmanV2/pods/top.go
@@ -0,0 +1,90 @@
+package pods
+
+import (
+ "context"
+ "fmt"
+ "os"
+ "strings"
+ "text/tabwriter"
+
+ "github.com/containers/libpod/cmd/podmanV2/registry"
+ "github.com/containers/libpod/pkg/domain/entities"
+ "github.com/containers/psgo"
+ "github.com/pkg/errors"
+ "github.com/spf13/cobra"
+)
+
+var (
+ topDescription = fmt.Sprintf(`Specify format descriptors to alter the output.
+
+ You may run "podman pod top -l pid pcpu seccomp" to print the process ID, the CPU percentage and the seccomp mode of each process of the latest pod.
+ Format Descriptors:
+ %s`, strings.Join(psgo.ListDescriptors(), ","))
+
+ topOptions = entities.PodTopOptions{}
+
+ topCommand = &cobra.Command{
+ Use: "top [flags] POD [FORMAT-DESCRIPTORS|ARGS]",
+ Short: "Display the running processes in a pod",
+ Long: topDescription,
+ PersistentPreRunE: preRunE,
+ RunE: top,
+ Args: cobra.ArbitraryArgs,
+ Example: `podman pod top podID
+podman pod top --latest
+podman pod top podID pid seccomp args %C
+podman pod top podID -eo user,pid,comm`,
+ }
+)
+
+func init() {
+ registry.Commands = append(registry.Commands, registry.CliCommand{
+ Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+ Command: topCommand,
+ Parent: podCmd,
+ })
+
+ topCommand.SetHelpTemplate(registry.HelpTemplate())
+ topCommand.SetUsageTemplate(registry.UsageTemplate())
+
+ flags := topCommand.Flags()
+ flags.SetInterspersed(false)
+ flags.BoolVar(&topOptions.ListDescriptors, "list-descriptors", false, "")
+ flags.BoolVarP(&topOptions.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
+
+ _ = flags.MarkHidden("list-descriptors") // meant only for bash completion
+ if registry.IsRemote() {
+ _ = flags.MarkHidden("latest")
+ }
+}
+
+func top(cmd *cobra.Command, args []string) error {
+ if topOptions.ListDescriptors {
+ fmt.Println(strings.Join(psgo.ListDescriptors(), "\n"))
+ return nil
+ }
+
+ if len(args) < 1 && !topOptions.Latest {
+ return errors.Errorf("you must provide the name or id of a running pod")
+ }
+
+ if topOptions.Latest {
+ topOptions.Descriptors = args
+ } else {
+ topOptions.NameOrID = args[0]
+ topOptions.Descriptors = args[1:]
+ }
+
+ topResponse, err := registry.ContainerEngine().PodTop(context.Background(), topOptions)
+ if err != nil {
+ return err
+ }
+
+ w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0)
+ for _, proc := range topResponse.Value {
+ if _, err := fmt.Fprintln(w, proc); err != nil {
+ return err
+ }
+ }
+ return w.Flush()
+}
diff --git a/libpod/pod_top_linux.go b/libpod/pod_top_linux.go
index 80221c3a9..1f84c8667 100644
--- a/libpod/pod_top_linux.go
+++ b/libpod/pod_top_linux.go
@@ -41,12 +41,23 @@ func (p *Pod) GetPodPidInformation(descriptors []string) ([]string, error) {
}
c.lock.Unlock()
}
+
+ // Also support comma-separated input.
+ psgoDescriptors := []string{}
+ for _, d := range descriptors {
+ for _, s := range strings.Split(d, ",") {
+ if s != "" {
+ psgoDescriptors = append(psgoDescriptors, s)
+ }
+ }
+ }
+
// TODO: psgo returns a [][]string to give users the ability to apply
// filters on the data. We need to change the API here and the
// varlink API to return a [][]string if we want to make use of
// filtering.
opts := psgo.JoinNamespaceOpts{FillMappings: rootless.IsRootless()}
- output, err := psgo.JoinNamespaceAndProcessInfoByPidsWithOptions(pids, descriptors, &opts)
+ output, err := psgo.JoinNamespaceAndProcessInfoByPidsWithOptions(pids, psgoDescriptors, &opts)
if err != nil {
return nil, err
}
diff --git a/pkg/bindings/pods/pods.go b/pkg/bindings/pods/pods.go
index bb0abebc4..ae87c00e9 100644
--- a/pkg/bindings/pods/pods.go
+++ b/pkg/bindings/pods/pods.go
@@ -8,6 +8,7 @@ import (
"strings"
"github.com/containers/libpod/libpod"
+ "github.com/containers/libpod/pkg/api/handlers"
"github.com/containers/libpod/pkg/bindings"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/containers/libpod/pkg/specgen"
@@ -213,9 +214,38 @@ func Stop(ctx context.Context, nameOrID string, timeout *int) (*entities.PodStop
return &report, response.Process(&report)
}
-func Top() error {
- // TODO
- return bindings.ErrNotImplemented // nolint:typecheck
+// Top gathers statistics about the running processes in a pod. The nameOrID can be a pod name
+// or a partial/full ID. The descriptors allow for specifying which data to collect from each process.
+func Top(ctx context.Context, nameOrID string, descriptors []string) ([]string, error) {
+ conn, err := bindings.GetClient(ctx)
+ if err != nil {
+ return nil, err
+ }
+ params := url.Values{}
+
+ if len(descriptors) > 0 {
+ // flatten the slice into one string
+ params.Set("ps_args", strings.Join(descriptors, ","))
+ }
+ response, err := conn.DoRequest(nil, http.MethodGet, "/pods/%s/top", params, nameOrID)
+ if err != nil {
+ return nil, err
+ }
+
+ body := handlers.PodTopOKBody{}
+ if err = response.Process(&body); err != nil {
+ return nil, err
+ }
+
+ // handlers.PodTopOKBody{} returns a slice of slices where each cell in the top table is an item.
+ // In libpod land, we're just using a slice with cells being split by tabs, which allows for an idiomatic
+ // usage of the tabwriter.
+ topOutput := []string{strings.Join(body.Titles, "\t")}
+ for _, out := range body.Processes {
+ topOutput = append(topOutput, strings.Join(out, "\t"))
+ }
+
+ return topOutput, err
}
// Unpause unpauses all paused containers in a Pod.
diff --git a/pkg/bindings/test/containers_test.go b/pkg/bindings/test/containers_test.go
index 9dd9cb707..a31181958 100644
--- a/pkg/bindings/test/containers_test.go
+++ b/pkg/bindings/test/containers_test.go
@@ -387,15 +387,15 @@ var _ = Describe("Podman containers ", func() {
Expect(err).To(BeNil())
// By name
- output, err := containers.Top(bt.conn, name, nil)
+ _, err = containers.Top(bt.conn, name, nil)
Expect(err).To(BeNil())
// By id
- output, err = containers.Top(bt.conn, cid, nil)
+ _, err = containers.Top(bt.conn, cid, nil)
Expect(err).To(BeNil())
// With descriptors
- output, err = containers.Top(bt.conn, cid, []string{"user,pid,hpid"})
+ output, err := containers.Top(bt.conn, cid, []string{"user,pid,hpid"})
Expect(err).To(BeNil())
header := strings.Split(output[0], "\t")
for _, d := range []string{"USER", "PID", "HPID"} {
diff --git a/pkg/bindings/test/pods_test.go b/pkg/bindings/test/pods_test.go
index 0f786e341..2599ec7ef 100644
--- a/pkg/bindings/test/pods_test.go
+++ b/pkg/bindings/test/pods_test.go
@@ -2,6 +2,7 @@ package test_bindings
import (
"net/http"
+ "strings"
"time"
"github.com/containers/libpod/libpod/define"
@@ -319,4 +320,33 @@ var _ = Describe("Podman pods", func() {
Expect(err).To(BeNil())
Expect(exists).To(BeTrue())
})
+
+ // Test validates the pod top bindings
+ It("pod top", func() {
+ var name string = "podA"
+
+ bt.Podcreate(&name)
+ _, err := pods.Start(bt.conn, name)
+ Expect(err).To(BeNil())
+
+ // By name
+ _, err = pods.Top(bt.conn, name, nil)
+ Expect(err).To(BeNil())
+
+ // With descriptors
+ output, err := pods.Top(bt.conn, name, []string{"user,pid,hpid"})
+ Expect(err).To(BeNil())
+ header := strings.Split(output[0], "\t")
+ for _, d := range []string{"USER", "PID", "HPID"} {
+ Expect(d).To(BeElementOf(header))
+ }
+
+ // With bogus ID
+ _, err = pods.Top(bt.conn, "IdoNotExist", nil)
+ Expect(err).ToNot(BeNil())
+
+ // With bogus descriptors
+ _, err = pods.Top(bt.conn, name, []string{"Me,Neither"})
+ Expect(err).ToNot(BeNil())
+ })
})
diff --git a/pkg/domain/entities/engine_container.go b/pkg/domain/entities/engine_container.go
index fceed1003..f78e10d49 100644
--- a/pkg/domain/entities/engine_container.go
+++ b/pkg/domain/entities/engine_container.go
@@ -24,6 +24,7 @@ type ContainerEngine interface {
PodStop(ctx context.Context, namesOrIds []string, options PodStopOptions) ([]*PodStopReport, error)
PodRm(ctx context.Context, namesOrIds []string, options PodRmOptions) ([]*PodRmReport, error)
PodUnpause(ctx context.Context, namesOrIds []string, options PodunpauseOptions) ([]*PodUnpauseReport, error)
+ PodTop(ctx context.Context, options PodTopOptions) (*StringSliceReport, error)
VolumeCreate(ctx context.Context, opts VolumeCreateOptions) (*IdOrNameResponse, error)
VolumeInspect(ctx context.Context, namesOrIds []string, opts VolumeInspectOptions) ([]*VolumeInspectReport, error)
diff --git a/pkg/domain/entities/pods.go b/pkg/domain/entities/pods.go
index efda17d65..d92d1bc7a 100644
--- a/pkg/domain/entities/pods.go
+++ b/pkg/domain/entities/pods.go
@@ -141,3 +141,13 @@ func (p PodCreateOptions) ToPodSpecGen(s *specgen.PodSpecGenerator) {
// Cgroup
s.CgroupParent = p.CGroupParent
}
+
+type PodTopOptions struct {
+ // CLI flags.
+ ListDescriptors bool
+ Latest bool
+
+ // Options for the API.
+ Descriptors []string
+ NameOrID string
+}
diff --git a/pkg/domain/infra/abi/pods.go b/pkg/domain/infra/abi/pods.go
index 619e973cf..8abcc6e4b 100644
--- a/pkg/domain/infra/abi/pods.go
+++ b/pkg/domain/infra/abi/pods.go
@@ -250,3 +250,25 @@ func (ic *ContainerEngine) PodCreate(ctx context.Context, opts entities.PodCreat
}
return &entities.PodCreateReport{Id: pod.ID()}, nil
}
+
+func (ic *ContainerEngine) PodTop(ctx context.Context, options entities.PodTopOptions) (*entities.StringSliceReport, error) {
+ var (
+ pod *libpod.Pod
+ err error
+ )
+
+ // Look up the pod.
+ if options.Latest {
+ pod, err = ic.Libpod.GetLatestPod()
+ } else {
+ pod, err = ic.Libpod.LookupPod(options.NameOrID)
+ }
+ if err != nil {
+ return nil, errors.Wrap(err, "unable to lookup requested container")
+ }
+
+ // Run Top.
+ report := &entities.StringSliceReport{}
+ report.Value, err = pod.GetPodPidInformation(options.Descriptors)
+ return report, err
+}
diff --git a/pkg/domain/infra/tunnel/pods.go b/pkg/domain/infra/tunnel/pods.go
index 4894874e5..9561a9807 100644
--- a/pkg/domain/infra/tunnel/pods.go
+++ b/pkg/domain/infra/tunnel/pods.go
@@ -6,6 +6,7 @@ import (
"github.com/containers/libpod/pkg/bindings/pods"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/containers/libpod/pkg/specgen"
+ "github.com/pkg/errors"
)
func (ic *ContainerEngine) PodExists(ctx context.Context, nameOrId string) (*entities.BoolReport, error) {
@@ -177,3 +178,18 @@ func (ic *ContainerEngine) PodCreate(ctx context.Context, opts entities.PodCreat
opts.ToPodSpecGen(podSpec)
return pods.CreatePodFromSpec(ic.ClientCxt, podSpec)
}
+
+func (ic *ContainerEngine) PodTop(ctx context.Context, options entities.PodTopOptions) (*entities.StringSliceReport, error) {
+ switch {
+ case options.Latest:
+ return nil, errors.New("latest is not supported")
+ case options.NameOrID == "":
+ return nil, errors.New("NameOrID must be specified")
+ }
+
+ topOutput, err := pods.Top(ic.ClientCxt, options.NameOrID, options.Descriptors)
+ if err != nil {
+ return nil, err
+ }
+ return &entities.StringSliceReport{Value: topOutput}, nil
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-06 03:13:26 +0000