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list.go
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list.go
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package cmd
import (
"encoding/json"
"fmt"
"runtime"
"runtime/debug"
"github.com/Sirupsen/logrus"
"github.com/urfave/cli"
"github.com/yasker/backupstore"
"github.com/yasker/backupstore/util"
)
func BackupListCmd() cli.Command {
return cli.Command{
Name: "list",
Aliases: []string{"ls"},
Usage: "list backups in backupstore: list <dest>",
Flags: []cli.Flag{
cli.StringFlag{
Name: "volume",
Usage: "volume name",
},
cli.BoolFlag{
Name: "volume-only",
Usage: "specify if only need list volumes without backup details",
},
},
Action: cmdBackupList,
}
}
func BackupInspectCmd() cli.Command {
return cli.Command{
Name: "inspect",
Usage: "inspect a backup: inspect <backup>",
Action: cmdBackupInspect,
}
}
func cmdBackupList(c *cli.Context) {
if err := doBackupList(c); err != nil {
panic(err)
}
}
func doBackupList(c *cli.Context) error {
var err error
if c.NArg() == 0 {
return RequiredMissingError("dest URL")
}
destURL := c.Args()[0]
if destURL == "" {
return RequiredMissingError("dest URL")
}
volumeName := c.String("volume")
if volumeName != "" && !util.ValidateName(volumeName) {
return fmt.Errorf("Invalid volume name %v for backup", volumeName)
}
volumeOnly := c.Bool("volume-only")
list, err := backupstore.List(volumeName, destURL, volumeOnly)
if err != nil {
return err
}
data, err := ResponseOutput(list)
if err != nil {
return err
}
fmt.Println(string(data))
return nil
}
func cmdBackupInspect(c *cli.Context) {
if err := doBackupInspect(c); err != nil {
panic(err)
}
}
func doBackupInspect(c *cli.Context) error {
var err error
if c.NArg() == 0 {
return RequiredMissingError("backup URL")
}
backupURL := c.Args()[0]
if backupURL == "" {
return RequiredMissingError("backup URL")
}
backupURL = util.UnescapeURL(backupURL)
info, err := backupstore.InspectBackup(backupURL)
if err != nil {
return err
}
data, err := ResponseOutput(info)
if err != nil {
return err
}
fmt.Println(string(data))
return nil
}
type ErrorResponse struct {
Error string
}
func ResponseLogAndError(v interface{}) {
if e, ok := v.(*logrus.Entry); ok {
e.Error(e.Message)
fmt.Println(e.Message)
} else {
e, isErr := v.(error)
_, isRuntimeErr := e.(runtime.Error)
if isErr && !isRuntimeErr {
logrus.Errorf(fmt.Sprint(e))
fmt.Println(fmt.Sprint(e))
} else {
logrus.Errorf("Caught FATAL error: %s", v)
debug.PrintStack()
fmt.Println("Caught FATAL error: ", v)
}
}
}
// ResponseOutput would generate a JSON format byte array of object for output
func ResponseOutput(v interface{}) ([]byte, error) {
j, err := json.MarshalIndent(v, "", "\t")
if err != nil {
return nil, err
}
return j, nil
}
func RequiredMissingError(name string) error {
return fmt.Errorf("Cannot find valid required parameter: %v", name)
}