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Signed-off-by: Dan Ardelean <dardelean@cloudbasesolutions.com>
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cmd/nerdctl/container_top_linux_test.go → cmd/nerdctl/container_top_unix_test.go
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//go:build linux || darwin || freebsd || netbsd || openbsd | ||
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/* | ||
Copyright The containerd Authors. | ||
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/* | ||
Copyright The containerd Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package main | ||
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import ( | ||
"testing" | ||
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"github.com/containerd/nerdctl/pkg/testutil" | ||
"golang.org/x/sys/windows/svc/mgr" | ||
) | ||
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func TestTopProcessContainer(t *testing.T) { | ||
testContainerName := testutil.Identifier(t) | ||
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base := testutil.NewBase(t) | ||
defer base.Cmd("rm", "-f", testContainerName).Run() | ||
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base.Cmd("run", "-d", "--name", testContainerName, testutil.WindowsNano, "sleep", "5").AssertOK() | ||
base.Cmd("top", testContainerName).AssertOK() | ||
} | ||
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func TestTopHyperVContainer(t *testing.T) { | ||
// Hyper-V Virtual Machine Management service | ||
hypervServiceName := "vmms" | ||
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m, err := mgr.Connect() | ||
if err != nil { | ||
t.Fatalf("unable to access Windows service control manager: %s", err) | ||
} | ||
defer m.Disconnect() | ||
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s, err := m.OpenService(hypervServiceName) | ||
// hyperv service is not present, hyperv is not enabled | ||
if err != nil { | ||
t.Skip("HyperV is not enabled, skipping test") | ||
} | ||
defer s.Close() | ||
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testContainerName := testutil.Identifier(t) | ||
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base := testutil.NewBase(t) | ||
defer base.Cmd("rm", "-f", testContainerName).Run() | ||
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base.Cmd("run", "--isolation", "hyperv", "-d", "--name", testContainerName, testutil.WindowsNano, "sleep", "5").AssertOK() | ||
base.Cmd("top", testContainerName).AssertOK() | ||
} |
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//go:build linux || darwin || freebsd || netbsd || openbsd | ||
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/* | ||
Copyright The containerd Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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/* | ||
Portions from: | ||
- https://github.com/moby/moby/blob/v20.10.6/api/types/container/container_top.go | ||
- https://github.com/moby/moby/blob/v20.10.6/daemon/top_unix.go | ||
Copyright (C) The Moby authors. | ||
Licensed under the Apache License, Version 2.0 | ||
NOTICE: https://github.com/moby/moby/blob/v20.10.6/NOTICE | ||
*/ | ||
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package container | ||
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import ( | ||
"bytes" | ||
"context" | ||
"errors" | ||
"fmt" | ||
"io" | ||
"os/exec" | ||
"strings" | ||
"text/tabwriter" | ||
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"github.com/containerd/containerd" | ||
) | ||
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// containerTop was inspired from https://github.com/moby/moby/blob/v20.10.6/daemon/top_unix.go#L133-L189 | ||
// | ||
// ContainerTop lists the processes running inside of the given | ||
// container by calling ps with the given args, or with the flags | ||
// "-ef" if no args are given. An error is returned if the container | ||
// is not found, or is not running, or if there are any problems | ||
// running ps, or parsing the output. | ||
// procList *ContainerTopOKBody | ||
func containerTop(ctx context.Context, stdio io.Writer, client *containerd.Client, id string, psArgs string) error { | ||
if psArgs == "" { | ||
psArgs = "-ef" | ||
} | ||
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if err := validatePSArgs(psArgs); err != nil { | ||
return err | ||
} | ||
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container, err := client.LoadContainer(ctx, id) | ||
if err != nil { | ||
return err | ||
} | ||
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task, err := container.Task(ctx, nil) | ||
if err != nil { | ||
return err | ||
} | ||
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status, err := task.Status(ctx) | ||
if err != nil { | ||
return err | ||
} | ||
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if status.Status != containerd.Running { | ||
return nil | ||
} | ||
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//TO DO handle restarting case: wait for container to restart and then launch top command | ||
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procs, err := task.Pids(ctx) | ||
if err != nil { | ||
return err | ||
} | ||
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psList := make([]uint32, 0, len(procs)) | ||
for _, ps := range procs { | ||
psList = append(psList, ps.Pid) | ||
} | ||
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args := strings.Split(psArgs, " ") | ||
pids := psPidsArg(psList) | ||
output, err := exec.Command("ps", append(args, pids)...).Output() | ||
if err != nil { | ||
// some ps options (such as f) can't be used together with q, | ||
// so retry without it | ||
output, err = exec.Command("ps", args...).Output() | ||
if err != nil { | ||
if ee, ok := err.(*exec.ExitError); ok { | ||
// first line of stderr shows why ps failed | ||
line := bytes.SplitN(ee.Stderr, []byte{'\n'}, 2) | ||
if len(line) > 0 && len(line[0]) > 0 { | ||
return errors.New(string(line[0])) | ||
} | ||
} | ||
return nil | ||
} | ||
} | ||
procList, err := parsePSOutput(output, psList) | ||
if err != nil { | ||
return err | ||
} | ||
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w := tabwriter.NewWriter(stdio, 20, 1, 3, ' ', 0) | ||
fmt.Fprintln(w, strings.Join(procList.Titles, "\t")) | ||
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for _, proc := range procList.Processes { | ||
fmt.Fprintln(w, strings.Join(proc, "\t")) | ||
} | ||
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return w.Flush() | ||
} |
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/* | ||
Copyright The containerd Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package container | ||
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import ( | ||
"context" | ||
"fmt" | ||
"io" | ||
"os" | ||
"strings" | ||
"text/tabwriter" | ||
"time" | ||
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"github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options" | ||
"github.com/containerd/containerd" | ||
"github.com/containerd/typeurl/v2" | ||
"github.com/docker/go-units" | ||
) | ||
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// containerTop was inspired from https://github.com/moby/moby/blob/master/daemon/top_windows.go | ||
// | ||
// ContainerTop lists the processes running inside of the given | ||
// container. An error is returned if the container | ||
// is not found, or is not running. | ||
func containerTop(ctx context.Context, stdio io.Writer, client *containerd.Client, id string, psArgs string) error { | ||
container, err := client.LoadContainer(ctx, id) | ||
if err != nil { | ||
return err | ||
} | ||
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task, err := container.Task(ctx, nil) | ||
if err != nil { | ||
return err | ||
} | ||
processes, err := task.Pids(ctx) | ||
if err != nil { | ||
return err | ||
} | ||
procList := &ContainerTopOKBody{} | ||
procList.Titles = []string{"Name", "PID", "CPU", "Private Working Set"} | ||
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for _, j := range processes { | ||
var info options.ProcessDetails | ||
err = typeurl.UnmarshalTo(j.Info, &info) | ||
if err != nil { | ||
return err | ||
} | ||
d := time.Duration((info.KernelTime_100Ns + info.UserTime_100Ns) * 100) // Combined time in nanoseconds | ||
procList.Processes = append(procList.Processes, []string{ | ||
info.ImageName, | ||
fmt.Sprint(info.ProcessID), | ||
fmt.Sprintf("%02d:%02d:%02d.%03d", int(d.Hours()), int(d.Minutes())%60, int(d.Seconds())%60, int(d.Nanoseconds()/1000000)%1000), | ||
units.HumanSize(float64(info.MemoryWorkingSetPrivateBytes))}) | ||
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} | ||
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w := tabwriter.NewWriter(os.Stdout, 20, 1, 3, ' ', 0) | ||
fmt.Fprintln(w, strings.Join(procList.Titles, "\t")) | ||
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for _, proc := range procList.Processes { | ||
fmt.Fprintln(w, strings.Join(proc, "\t")) | ||
} | ||
w.Flush() | ||
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return nil | ||
} |