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restic/cmd/khepri/cmd_snapshots.go
2014-11-25 22:39:35 +01:00

123 lines
2.2 KiB
Go

package main
import (
"errors"
"fmt"
"io"
"os"
"sort"
"strings"
"time"
"github.com/fd0/khepri"
"github.com/fd0/khepri/backend"
)
const (
minute = 60
hour = 60 * minute
day = 24 * hour
week = 7 * day
)
type Table struct {
Header string
Rows [][]interface{}
RowFormat string
}
func NewTable() Table {
return Table{
Rows: [][]interface{}{},
}
}
func (t Table) Print(w io.Writer) error {
_, err := fmt.Fprintln(w, t.Header)
if err != nil {
return err
}
_, err = fmt.Fprintln(w, strings.Repeat("-", 70))
if err != nil {
return err
}
for _, row := range t.Rows {
_, err = fmt.Fprintf(w, t.RowFormat+"\n", row...)
if err != nil {
return err
}
}
return nil
}
const TimeFormat = "2006-01-02 15:04:05"
func reltime(t time.Time) string {
sec := uint64(time.Since(t).Seconds())
switch {
case sec > week:
return t.Format(TimeFormat)
case sec > day:
return fmt.Sprintf("%d days ago", sec/day)
case sec > hour:
return fmt.Sprintf("%d hours ago", sec/hour)
case sec > minute:
return fmt.Sprintf("%d minutes ago", sec/minute)
default:
return fmt.Sprintf("%d seconds ago", sec)
}
}
func commandSnapshots(be backend.Server, key *khepri.Key, args []string) error {
if len(args) != 0 {
return errors.New("usage: snapshots")
}
ch, err := khepri.NewContentHandler(be, key)
if err != nil {
return err
}
tab := NewTable()
tab.Header = fmt.Sprintf("%-8s %-19s %-10s %s\n", "ID", "Date", "Source", "Directory")
tab.RowFormat = "%-8s %-19s %-10s %s"
list := []*khepri.Snapshot{}
backend.EachID(be, backend.Snapshot, func(id backend.ID) {
sn, err := ch.LoadSnapshot(id)
if err != nil {
fmt.Fprintf(os.Stderr, "error loading snapshot %s: %v\n", id, err)
return
}
pos := sort.Search(len(list), func(i int) bool {
return list[i].Time.After(sn.Time)
})
if pos < len(list) {
list = append(list, nil)
copy(list[pos+1:], list[pos:])
list[pos] = sn
} else {
list = append(list, sn)
}
})
plen, err := backend.PrefixLength(be, backend.Snapshot)
if err != nil {
return err
}
for _, sn := range list {
tab.Rows = append(tab.Rows, []interface{}{sn.ID()[:plen], sn.Time.Format(TimeFormat), sn.Hostname, sn.Dir})
}
tab.Print(os.Stdout)
return nil
}