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lifecycle: NoncurrentVersionExpiration considers noncurrent version age (#10444)

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From https://docs.aws.amazon.com/AmazonS3/latest/dev/intro-lifecycle-rules.html#intro-lifecycle-rules-actions

```
When specifying the number of days in the NoncurrentVersionTransition
and NoncurrentVersionExpiration actions in a Lifecycle configuration,
note the following:

It is the number of days from when the version of the object becomes
noncurrent (that is, when the object is overwritten or deleted), that
Amazon S3 will perform the action on the specified object or objects.

Amazon S3 calculates the time by adding the number of days specified in
the rule to the time when the new successor version of the object is
created and rounding the resulting time to the next day midnight UTC.
For example, in your bucket, suppose that you have a current version of
an object that was created at 1/1/2014 10:30 AM UTC. If the new version
of the object that replaces the current version is created at 1/15/2014
10:30 AM UTC, and you specify 3 days in a transition rule, the
transition date of the object is calculated as 1/19/2014 00:00 UTC.
```
This commit is contained in:
Anis Elleuch
2020-09-10 02:11:24 +01:00
committed by GitHub
parent 1dce6918c2
commit af88772a78
4 changed files with 57 additions and 29 deletions
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22
pkg/bucket/lifecycle/lifecycle.go
View File

@@ -176,13 +176,14 @@ func (lc Lifecycle) FilterActionableRules(obj ObjectOpts) []Rule {
// ObjectOpts provides information to deduce the lifecycle actions
// which can be triggered on the resultant object.
type ObjectOpts struct {
Name string
UserTags string
ModTime time.Time
VersionID string
IsLatest bool
DeleteMarker bool
NumVersions int
Name string
UserTags string
ModTime time.Time
VersionID string
IsLatest bool
DeleteMarker bool
NumVersions int
SuccessorModTime time.Time
}
// ComputeAction returns the action to perform by evaluating all lifecycle rules
@@ -203,9 +204,10 @@ func (lc Lifecycle) ComputeAction(obj ObjectOpts) Action {
}
if !rule.NoncurrentVersionExpiration.IsDaysNull() {
if obj.VersionID != "" && !obj.IsLatest {
// Non current versions should be deleted.
if time.Now().After(expectedExpiryTime(obj.ModTime, rule.NoncurrentVersionExpiration.NoncurrentDays)) {
if obj.VersionID != "" && !obj.IsLatest && !obj.SuccessorModTime.IsZero() {
// Non current versions should be deleted if their age exceeds non current days configuration
// https://docs.aws.amazon.com/AmazonS3/latest/dev/intro-lifecycle-rules.html#intro-lifecycle-rules-actions
if time.Now().After(expectedExpiryTime(obj.SuccessorModTime, rule.NoncurrentVersionExpiration.NoncurrentDays)) {
return DeleteVersionAction
}
}