TheArchive/restic
1
0
Fork 0
mirror of https://github.com/restic/restic.git synced 2025-08-13 13:01:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

forget: Add policy to keep snapshots before a date

Browse Source
This commit is contained in:
Matthew Holt
2018-04-23 14:34:37 -06:00
committed by Alexander Neumann
parent 159badf5ba
commit b52f2aa9a4
4 changed files with 137 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
internal/restic/snapshot_policy.go
View File

@@ -10,13 +10,14 @@ import (
// ExpirePolicy configures which snapshots should be automatically removed.
type ExpirePolicy struct {
Last int // keep the last n snapshots
Hourly int // keep the last n hourly snapshots
Daily int // keep the last n daily snapshots
Weekly int // keep the last n weekly snapshots
Monthly int // keep the last n monthly snapshots
Yearly int // keep the last n yearly snapshots
Tags []TagList // keep all snapshots that include at least one of the tag lists.
Last int // keep the last n snapshots
Hourly int // keep the last n hourly snapshots
Daily int // keep the last n daily snapshots
Weekly int // keep the last n weekly snapshots
Monthly int // keep the last n monthly snapshots
Yearly int // keep the last n yearly snapshots
NewerThan time.Time // keep snapshots newer than this time
Tags []TagList // keep all snapshots that include at least one of the tag lists.
}
func (e ExpirePolicy) String() (s string) {
@@ -39,15 +40,11 @@ func (e ExpirePolicy) String() (s string) {
if e.Yearly > 0 {
keeps = append(keeps, fmt.Sprintf("%d yearly", e.Yearly))
}
s = "keep the last "
for _, k := range keeps {
s += k + ", "
if !e.NewerThan.IsZero() {
keeps = append(keeps, fmt.Sprintf("snapshots newer than %s", e.NewerThan))
}
s = strings.Trim(s, ", ")
s += " snapshots"
return s
return fmt.Sprintf("keep the last %s snapshots", strings.Join(keeps, ", "))
}
// Sum returns the maximum number of snapshots to be kept according to this
@@ -133,6 +130,11 @@ func ApplyPolicy(list Snapshots, p ExpirePolicy) (keep, remove Snapshots) {
}
}
// If a timestamp is specified, it's a hard cutoff for older snapshots.
if !p.NewerThan.IsZero() && cur.Time.After(p.NewerThan) {
keepSnap = true
}
// Now update the other buckets and see if they have some counts left.
for i, b := range buckets {
if b.Count > 0 {

1
internal/restic/snapshot_policy_test.go
View File

@@ -171,6 +171,7 @@ var expireTests = []restic.ExpirePolicy{
{Tags: []restic.TagList{{"foo"}}},
{Tags: []restic.TagList{{"foo", "bar"}}},
{Tags: []restic.TagList{{"foo"}, {"bar"}}},
{NewerThan: parseTimeUTC("2016-01-01 01:00:00")},
}
func TestApplyPolicy(t *testing.T) {

97
internal/restic/testdata/policy_keep_snapshots_21 vendored Normal file
View File

@@ -0,0 +1,97 @@
[
{
"time": "2016-01-18T12:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-12T21:08:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-12T21:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-09T21:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-08T20:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-07T10:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-06T08:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-05T09:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T16:23:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T12:30:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T12:28:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T12:24:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T12:23:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T11:23:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-04T10:23:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-03T07:02:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-01T07:08:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-01T01:03:03Z",
"tree": null,
"paths": null
},
{
"time": "2016-01-01T01:02:03Z",
"tree": null,
"paths": null
}
]