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|
package cmd
import (
"fmt"
"path/filepath"
"github.com/checkpoint-restore/checkpointctl/internal"
metadata "github.com/checkpoint-restore/checkpointctl/lib"
"github.com/spf13/cobra"
)
func Inspect() *cobra.Command {
cmd := &cobra.Command{
Use: "inspect",
Short: "Display low-level information about a container checkpoint",
RunE: inspect,
Args: cobra.MinimumNArgs(1),
}
flags := cmd.Flags()
flags.BoolVar(
stats,
"stats",
false,
"Display checkpoint statistics",
)
flags.BoolVar(
mounts,
"mounts",
false,
"Display an overview of mounts used in the container checkpoint",
)
flags.Uint32VarP(
pID,
"pid",
"p",
0,
"Display the process tree of a specific PID",
)
flags.BoolVar(
psTree,
"ps-tree",
false,
"Display an overview of processes in the container checkpoint",
)
flags.BoolVar(
psTreeCmd,
"ps-tree-cmd",
false,
"Display an overview of processes in the container checkpoint with full command line arguments",
)
flags.BoolVar(
psTreeEnv,
"ps-tree-env",
false,
"Display an overview of processes in the container checkpoint with their environment variables",
)
flags.BoolVar(
files,
"files",
false,
"Display the open file descriptors for processes in the container checkpoint",
)
flags.BoolVar(
sockets,
"sockets",
false,
"Display the open sockets for processes in the container checkpoint",
)
flags.BoolVar(
showAll,
"all",
false,
"Show all information about container checkpoints",
)
flags.StringVar(
format,
"format",
"tree",
"Specify the output format: tree or json",
)
flags.BoolVar(
showMetdata,
"metadata",
false,
"Show metadata about the container",
)
return cmd
}
func inspect(cmd *cobra.Command, args []string) error {
if *showAll {
*stats = true
*mounts = true
*psTreeCmd = true
*psTreeEnv = true
*files = true
*sockets = true
*showMetdata = true
}
requiredFiles := []string{metadata.SpecDumpFile, metadata.ConfigDumpFile}
if *stats {
requiredFiles = append(requiredFiles, "stats-dump")
}
if *pID != 0 {
// Enable displaying process tree if the PID filter is passed.
*psTree = true
}
if *files {
// Enable displaying process tree, even if it is not passed.
// This is necessary to attach the files to the processes
// that opened them and display this in the tree.
*psTree = true
requiredFiles = append(
requiredFiles,
// Unpack files.img, fs-*.img, ids-*.img, fdinfo-*.img
filepath.Join(metadata.CheckpointDirectory, "files.img"),
filepath.Join(metadata.CheckpointDirectory, "fs-"),
filepath.Join(metadata.CheckpointDirectory, "ids-"),
filepath.Join(metadata.CheckpointDirectory, "fdinfo-"),
)
}
if *sockets {
// Enable displaying process tree, even if it is not passed.
// This is necessary to attach the sockets to the processes
// that opened them and display this in the tree.
*psTree = true
requiredFiles = append(
requiredFiles,
// Unpack files.img, ids-*.img, fdinfo-*.img
filepath.Join(metadata.CheckpointDirectory, "files.img"),
filepath.Join(metadata.CheckpointDirectory, "ids-"),
filepath.Join(metadata.CheckpointDirectory, "fdinfo-"),
)
}
if *psTreeCmd || *psTreeEnv {
// Enable displaying process tree when using --ps-tree-cmd or --ps-tree-env.
*psTree = true
requiredFiles = append(
requiredFiles,
// Unpack pagemap-*.img, pages-*.img, and mm-*.img
filepath.Join(metadata.CheckpointDirectory, "pagemap-"),
filepath.Join(metadata.CheckpointDirectory, "pages-"),
filepath.Join(metadata.CheckpointDirectory, "mm-"),
)
}
if *psTree {
requiredFiles = append(
requiredFiles,
// Unpack pstree.img, core-*.img
filepath.Join(metadata.CheckpointDirectory, "pstree.img"),
filepath.Join(metadata.CheckpointDirectory, "core-"),
)
}
tasks, err := internal.CreateTasks(args, requiredFiles)
if err != nil {
return err
}
defer internal.CleanupTasks(tasks)
switch *format {
case "tree":
return internal.RenderTreeView(tasks)
case "json":
return internal.RenderJSONView(tasks)
default:
return fmt.Errorf("invalid output format: %s", *format)
}
}
|
