open-nomad/command/operator_snapshot_inspect.go
hc-github-team-nomad-core 74e03514fc
backport of commit 0748918a3a355ad5616e32c1aad041321a771418 (#18919)
Co-authored-by: Dave May <dmay@hashicorp.com>
2023-10-30 14:00:40 -04:00

78 lines
1.8 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package command
import (
"fmt"
"os"
"strings"
"github.com/hashicorp/nomad/helper/snapshot"
"github.com/posener/complete"
)
type OperatorSnapshotInspectCommand struct {
Meta
}
func (c *OperatorSnapshotInspectCommand) Help() string {
helpText := `
Usage: nomad operator snapshot inspect [options] <file>
Displays information about a snapshot file on disk.
To inspect the file "backup.snap":
$ nomad operator snapshot inspect backup.snap
`
return strings.TrimSpace(helpText)
}
func (c *OperatorSnapshotInspectCommand) AutocompleteFlags() complete.Flags {
return complete.Flags{}
}
func (c *OperatorSnapshotInspectCommand) AutocompleteArgs() complete.Predictor {
return complete.PredictFiles("*.snap")
}
func (c *OperatorSnapshotInspectCommand) Synopsis() string {
return "Displays information about a Nomad snapshot file"
}
func (c *OperatorSnapshotInspectCommand) Name() string { return "operator snapshot inspect" }
func (c *OperatorSnapshotInspectCommand) Run(args []string) int {
// Check that we either got no filename or exactly one.
if len(args) != 1 {
c.Ui.Error("This command takes one argument: <filename>")
c.Ui.Error(commandErrorText(c))
return 1
}
path := args[0]
f, err := os.Open(path)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error opening snapshot file: %s", err))
return 1
}
defer f.Close()
meta, err := snapshot.Verify(f)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error verifying snapshot: %s", err))
return 1
}
output := []string{
fmt.Sprintf("ID|%s", meta.ID),
fmt.Sprintf("Size|%d", meta.Size),
fmt.Sprintf("Index|%d", meta.Index),
fmt.Sprintf("Term|%d", meta.Term),
fmt.Sprintf("Version|%d", meta.Version),
}
c.Ui.Output(formatList(output))
return 0
}