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pkg/lifecycle: Add SetPredictionHeaders method (#12755)

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This method is used to add expected expiration and transition time 
for an object in GET/HEAD Object response headers.

Also fixed bugs in lifecycle.PredictTransitionTime and
getLifecycleTransitionTier in handling current and 
non-current versions.
This commit is contained in:
Krishnan Parthasarathi
2021-07-20 17:36:55 -07:00
committed by GitHub
parent 6ea083d197
commit d0963974a5
8 changed files with 204 additions and 59 deletions
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33
cmd/api-headers.go
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@@ -28,7 +28,6 @@ import (
"strings"
"time"
"github.com/minio/minio/internal/bucket/lifecycle"
"github.com/minio/minio/internal/crypto"
xhttp "github.com/minio/minio/internal/http"
)
@@ -186,42 +185,12 @@ func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, rs *HTTPRangeSp
}
if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil {
if opts.VersionID == "" {
if ruleID, expiryTime := lc.PredictExpiryTime(lifecycle.ObjectOpts{
Name: objInfo.Name,
UserTags: objInfo.UserTags,
VersionID: objInfo.VersionID,
ModTime: objInfo.ModTime,
IsLatest: objInfo.IsLatest,
DeleteMarker: objInfo.DeleteMarker,
SuccessorModTime: objInfo.SuccessorModTime,
}); !expiryTime.IsZero() {
w.Header()[xhttp.AmzExpiration] = []string{
fmt.Sprintf(`expiry-date="%s", rule-id="%s"`, expiryTime.Format(http.TimeFormat), ruleID),
}
}
}
if objInfo.IsRemote() {
// Check if object is being restored. For more information on x-amz-restore header see
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_HeadObject.html#API_HeadObject_ResponseSyntax
w.Header()[xhttp.AmzStorageClass] = []string{objInfo.TransitionTier}
}
ruleID, transitionTime := lc.PredictTransitionTime(lifecycle.ObjectOpts{
Name: objInfo.Name,
UserTags: objInfo.UserTags,
VersionID: objInfo.VersionID,
ModTime: objInfo.ModTime,
IsLatest: objInfo.IsLatest,
DeleteMarker: objInfo.DeleteMarker,
TransitionStatus: objInfo.TransitionStatus,
})
if !transitionTime.IsZero() {
// This header is a MinIO centric extension to show expected transition date in a similar spirit as x-amz-expiration
w.Header()[xhttp.MinIOTransition] = []string{
fmt.Sprintf(`transition-date="%s", rule-id="%s"`, transitionTime.Format(http.TimeFormat), ruleID),
}
}
lc.SetPredictionHeaders(w, objInfo.ToLifecycleOpts())
}
return nil