github.com/containerd/nerdctl/v2@v2.0.0-beta.5.0.20240520001846-b5758f54fa28/pkg/cmd/container/top_windows.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package container
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"io"
    23  	"os"
    24  	"strings"
    25  	"text/tabwriter"
    26  	"time"
    27  
    28  	"github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options"
    29  	"github.com/containerd/containerd"
    30  	"github.com/containerd/typeurl/v2"
    31  	"github.com/docker/go-units"
    32  )
    33  
    34  // containerTop was inspired from https://github.com/moby/moby/blob/master/daemon/top_windows.go
    35  //
    36  // ContainerTop lists the processes running inside of the given
    37  // container. An error is returned if the container
    38  // is not found, or is not running.
    39  func containerTop(ctx context.Context, stdio io.Writer, client *containerd.Client, id string, psArgs string) error {
    40  	container, err := client.LoadContainer(ctx, id)
    41  	if err != nil {
    42  		return err
    43  	}
    44  
    45  	task, err := container.Task(ctx, nil)
    46  	if err != nil {
    47  		return err
    48  	}
    49  	processes, err := task.Pids(ctx)
    50  	if err != nil {
    51  		return err
    52  	}
    53  	procList := &ContainerTopOKBody{}
    54  	procList.Titles = []string{"Name", "PID", "CPU", "Private Working Set"}
    55  
    56  	for _, j := range processes {
    57  		var info options.ProcessDetails
    58  		err = typeurl.UnmarshalTo(j.Info, &info)
    59  		if err != nil {
    60  			return err
    61  		}
    62  		d := time.Duration((info.KernelTime_100Ns + info.UserTime_100Ns) * 100) // Combined time in nanoseconds
    63  		procList.Processes = append(procList.Processes, []string{
    64  			info.ImageName,
    65  			fmt.Sprint(info.ProcessID),
    66  			fmt.Sprintf("%02d:%02d:%02d.%03d", int(d.Hours()), int(d.Minutes())%60, int(d.Seconds())%60, int(d.Nanoseconds()/1000000)%1000),
    67  			units.HumanSize(float64(info.MemoryWorkingSetPrivateBytes))})
    68  
    69  	}
    70  
    71  	w := tabwriter.NewWriter(os.Stdout, 20, 1, 3, ' ', 0)
    72  	fmt.Fprintln(w, strings.Join(procList.Titles, "\t"))
    73  
    74  	for _, proc := range procList.Processes {
    75  		fmt.Fprintln(w, strings.Join(proc, "\t"))
    76  	}
    77  	w.Flush()
    78  
    79  	return nil
    80  }