open-consul/command/snapshot/inspect/snapshot_inspect.go
2017-10-30 14:51:08 -07:00

102 lines
1.9 KiB
Go

package inspect
import (
"bytes"
"flag"
"fmt"
"os"
"text/tabwriter"
"github.com/hashicorp/consul/command/flags"
"github.com/hashicorp/consul/snapshot"
"github.com/mitchellh/cli"
)
func New(ui cli.Ui) *cmd {
c := &cmd{UI: ui}
c.init()
return c
}
type cmd struct {
UI cli.Ui
flags *flag.FlagSet
help string
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
var file string
args = c.flags.Args()
switch len(args) {
case 0:
c.UI.Error("Missing FILE argument")
return 1
case 1:
file = args[0]
default:
c.UI.Error(fmt.Sprintf("Too many arguments (expected 1, got %d)", len(args)))
return 1
}
// Open the file.
f, err := os.Open(file)
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
}
var b bytes.Buffer
tw := tabwriter.NewWriter(&b, 0, 2, 6, ' ', 0)
fmt.Fprintf(tw, "ID\t%s\n", meta.ID)
fmt.Fprintf(tw, "Size\t%d\n", meta.Size)
fmt.Fprintf(tw, "Index\t%d\n", meta.Index)
fmt.Fprintf(tw, "Term\t%d\n", meta.Term)
fmt.Fprintf(tw, "Version\t%d\n", meta.Version)
if err = tw.Flush(); err != nil {
c.UI.Error(fmt.Sprintf("Error rendering snapshot info: %s", err))
return 1
}
c.UI.Info(b.String())
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return c.help
}
const synopsis = "Displays information about a Consul snapshot file"
const help = `
Usage: consul snapshot inspect [options] FILE
Displays information about a snapshot file on disk.
To inspect the file "backup.snap":
$ consul snapshot inspect backup.snap
For a full list of options and examples, please see the Consul documentation.
`