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Support time ranges expressed in hours in snapshot retention policies

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Make restic forget --keep-within accept time ranges measured in hours and choose
accordingly which snapshots to keep and which to forget. Add relative tests.
This commit is contained in:
plumbeo 2018-11-14 17:24:59 +01:00
parent 7486bfea5b
commit 71891b340c
6 changed files with 1661 additions and 2 deletions
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2
cmd/restic/cmd_forget.go
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@ -59,7 +59,7 @@ func init() {
f.IntVarP(&forgetOptions.Weekly, "keep-weekly", "w", 0, "keep the last `n` weekly snapshots") f.IntVarP(&forgetOptions.Weekly, "keep-weekly", "w", 0, "keep the last `n` weekly snapshots")
f.IntVarP(&forgetOptions.Monthly, "keep-monthly", "m", 0, "keep the last `n` monthly snapshots") f.IntVarP(&forgetOptions.Monthly, "keep-monthly", "m", 0, "keep the last `n` monthly snapshots")
f.IntVarP(&forgetOptions.Yearly, "keep-yearly", "y", 0, "keep the last `n` yearly snapshots") f.IntVarP(&forgetOptions.Yearly, "keep-yearly", "y", 0, "keep the last `n` yearly snapshots")
f.VarP(&forgetOptions.Within, "keep-within", "", "keep snapshots that are older than `duration` (eg. 1y5m7d) relative to the latest snapshot") f.VarP(&forgetOptions.Within, "keep-within", "", "keep snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
f.Var(&forgetOptions.KeepTags, "keep-tag", "keep snapshots with this `taglist` (can be specified multiple times)") f.Var(&forgetOptions.KeepTags, "keep-tag", "keep snapshots with this `taglist` (can be specified multiple times)")
f.StringVar(&forgetOptions.Host, "host", "", "only consider snapshots with the given `host`") f.StringVar(&forgetOptions.Host, "host", "", "only consider snapshots with the given `host`")

2
internal/restic/snapshot_policy.go
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@ -196,7 +196,7 @@ func ApplyPolicy(list Snapshots, p ExpirePolicy) (keep, remove Snapshots, reason
// If the timestamp of the snapshot is within the range, then keep it. // If the timestamp of the snapshot is within the range, then keep it.
if !p.Within.Zero() { if !p.Within.Zero() {
t := latest.AddDate(-p.Within.Years, -p.Within.Months, -p.Within.Days) t := latest.AddDate(-p.Within.Years, -p.Within.Months, -p.Within.Days).Add(time.Hour * time.Duration(-p.Within.Hours))
if cur.Time.After(t) { if cur.Time.After(t) {
keepSnap = true keepSnap = true
keepSnapReasons = append(keepSnapReasons, fmt.Sprintf("within %v", p.Within)) keepSnapReasons = append(keepSnapReasons, fmt.Sprintf("within %v", p.Within))

3
internal/restic/snapshot_policy_test.go
View File

@ -225,6 +225,9 @@ func TestApplyPolicy(t *testing.T) {
{Within: parseDuration("1m")}, {Within: parseDuration("1m")},
{Within: parseDuration("1m14d")}, {Within: parseDuration("1m14d")},
{Within: parseDuration("1y1d1m")}, {Within: parseDuration("1y1d1m")},
{Within: parseDuration("13d23h")},
{Within: parseDuration("2m2h")},
{Within: parseDuration("1y2m3d3h")},
} }
for i, p := range tests { for i, p := range tests {

150
internal/restic/testdata/policy_keep_snapshots_27 vendored Normal file
View File

@ -0,0 +1,150 @@
{
"keep": [
{
"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
}
],
"reasons": [
{
"snapshot": {
"time": "2016-01-18T12:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-12T21:08:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-12T21:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-09T21:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-08T20:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-07T10:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-06T08:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-05T09:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T16:23:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 13d23h"
],
"counters": {}
}
]
}

374
internal/restic/testdata/policy_keep_snapshots_28 vendored Normal file
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@ -0,0 +1,374 @@
{
"keep": [
{
"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
},
{
"time": "2015-11-22T10:20:30Z",
"tree": null,
"paths": null
},
{
"time": "2015-11-21T10:20:30Z",
"tree": null,
"paths": null
},
{
"time": "2015-11-20T10:20:30Z",
"tree": null,
"paths": null
},
{
"time": "2015-11-18T10:20:30Z",
"tree": null,
"paths": null
}
],
"reasons": [
{
"snapshot": {
"time": "2016-01-18T12:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-12T21:08:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-12T21:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-09T21:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-08T20:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-07T10:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-06T08:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-05T09:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T16:23:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T12:30:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T12:28:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T12:24:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T12:23:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T11:23:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-04T10:23:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-03T07:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-01T07:08:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-01T01:03:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2016-01-01T01:02:03Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2015-11-22T10:20:30Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2015-11-21T10:20:30Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2015-11-20T10:20:30Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
},
{
"snapshot": {
"time": "2015-11-18T10:20:30Z",
"tree": null,
"paths": null
},
"matches": [
"within 2m2h"
],
"counters": {}
}
]
}

1132
internal/restic/testdata/policy_keep_snapshots_29 vendored Normal file
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