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Copy pathbucket-lifecycle.go
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873 lines (779 loc) · 27 KB
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"encoding/xml"
"errors"
"fmt"
"io"
"net/http"
"runtime"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/google/uuid"
"github.com/minio/madmin-go/v3"
"github.com/minio/minio-go/v7/pkg/tags"
"github.com/minio/minio/internal/amztime"
sse "github.com/minio/minio/internal/bucket/encryption"
"github.com/minio/minio/internal/bucket/lifecycle"
"github.com/minio/minio/internal/event"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/minio/internal/logger"
"github.com/minio/minio/internal/s3select"
"github.com/minio/pkg/v2/env"
"github.com/minio/pkg/v2/workers"
)
const (
// Disabled means the lifecycle rule is inactive
Disabled = "Disabled"
// TransitionStatus status of transition
TransitionStatus = "transition-status"
// TransitionedObjectName name of transitioned object
TransitionedObjectName = "transitioned-object"
// TransitionedVersionID is version of remote object
TransitionedVersionID = "transitioned-versionID"
// TransitionTier name of transition storage class
TransitionTier = "transition-tier"
)
// LifecycleSys - Bucket lifecycle subsystem.
type LifecycleSys struct{}
// Get - gets lifecycle config associated to a given bucket name.
func (sys *LifecycleSys) Get(bucketName string) (lc *lifecycle.Lifecycle, err error) {
lc, _, err = globalBucketMetadataSys.GetLifecycleConfig(bucketName)
return lc, err
}
// NewLifecycleSys - creates new lifecycle system.
func NewLifecycleSys() *LifecycleSys {
return &LifecycleSys{}
}
func ilmTrace(startTime time.Time, duration time.Duration, oi ObjectInfo, event string) madmin.TraceInfo {
return madmin.TraceInfo{
TraceType: madmin.TraceILM,
Time: startTime,
NodeName: globalLocalNodeName,
FuncName: event,
Duration: duration,
Path: pathJoin(oi.Bucket, oi.Name),
Error: "",
Message: getSource(4),
Custom: map[string]string{"version-id": oi.VersionID},
}
}
func (sys *LifecycleSys) trace(oi ObjectInfo) func(event string) {
startTime := time.Now()
return func(event string) {
duration := time.Since(startTime)
if globalTrace.NumSubscribers(madmin.TraceILM) > 0 {
globalTrace.Publish(ilmTrace(startTime, duration, oi, event))
}
}
}
type expiryTask struct {
objInfo ObjectInfo
event lifecycle.Event
src lcEventSrc
}
type expiryState struct {
once sync.Once
byDaysCh chan expiryTask
byNewerNoncurrentCh chan newerNoncurrentTask
}
// PendingTasks returns the number of pending ILM expiry tasks.
func (es *expiryState) PendingTasks() int {
return len(es.byDaysCh) + len(es.byNewerNoncurrentCh)
}
// close closes work channels exactly once.
func (es *expiryState) close() {
es.once.Do(func() {
close(es.byDaysCh)
close(es.byNewerNoncurrentCh)
})
}
// enqueueByDays enqueues object versions expired by days for expiry.
func (es *expiryState) enqueueByDays(oi ObjectInfo, event lifecycle.Event, src lcEventSrc) {
select {
case <-GlobalContext.Done():
es.close()
case es.byDaysCh <- expiryTask{objInfo: oi, event: event, src: src}:
default:
}
}
// enqueueByNewerNoncurrent enqueues object versions expired by
// NewerNoncurrentVersions limit for expiry.
func (es *expiryState) enqueueByNewerNoncurrent(bucket string, versions []ObjectToDelete, lcEvent lifecycle.Event) {
select {
case <-GlobalContext.Done():
es.close()
case es.byNewerNoncurrentCh <- newerNoncurrentTask{bucket: bucket, versions: versions, event: lcEvent}:
default:
}
}
var globalExpiryState *expiryState
func newExpiryState() *expiryState {
return &expiryState{
byDaysCh: make(chan expiryTask, 100000),
byNewerNoncurrentCh: make(chan newerNoncurrentTask, 100000),
}
}
func initBackgroundExpiry(ctx context.Context, objectAPI ObjectLayer) {
globalExpiryState = newExpiryState()
workerSize, _ := strconv.Atoi(env.Get("_MINIO_ILM_EXPIRY_WORKERS", strconv.Itoa((runtime.GOMAXPROCS(0)+1)/2)))
if workerSize == 0 {
workerSize = 4
}
ewk, err := workers.New(workerSize)
if err != nil {
logger.LogIf(ctx, err)
}
nwk, err := workers.New(workerSize)
if err != nil {
logger.LogIf(ctx, err)
}
go func() {
for t := range globalExpiryState.byDaysCh {
ewk.Take()
go func(t expiryTask) {
defer ewk.Give()
if t.objInfo.TransitionedObject.Status != "" {
applyExpiryOnTransitionedObject(ctx, objectAPI, t.objInfo, t.event, t.src)
} else {
applyExpiryOnNonTransitionedObjects(ctx, objectAPI, t.objInfo, t.event, t.src)
}
}(t)
}
ewk.Wait()
}()
go func() {
for t := range globalExpiryState.byNewerNoncurrentCh {
nwk.Take()
go func(t newerNoncurrentTask) {
defer nwk.Give()
deleteObjectVersions(ctx, objectAPI, t.bucket, t.versions, t.event)
}(t)
}
nwk.Wait()
}()
}
// newerNoncurrentTask encapsulates arguments required by worker to expire objects
// by NewerNoncurrentVersions
type newerNoncurrentTask struct {
bucket string
versions []ObjectToDelete
event lifecycle.Event
}
type transitionTask struct {
objInfo ObjectInfo
src lcEventSrc
event lifecycle.Event
}
type transitionState struct {
transitionCh chan transitionTask
ctx context.Context
objAPI ObjectLayer
mu sync.Mutex
numWorkers int
killCh chan struct{}
activeTasks int32
lastDayMu sync.RWMutex
lastDayStats map[string]*lastDayTierStats
}
func (t *transitionState) queueTransitionTask(oi ObjectInfo, event lifecycle.Event, src lcEventSrc) {
select {
case <-t.ctx.Done():
case t.transitionCh <- transitionTask{objInfo: oi, event: event, src: src}:
default:
}
}
var globalTransitionState *transitionState
// newTransitionState returns a transitionState object ready to be initialized
// via its Init method.
func newTransitionState(ctx context.Context) *transitionState {
return &transitionState{
transitionCh: make(chan transitionTask, 10000),
ctx: ctx,
killCh: make(chan struct{}),
lastDayStats: make(map[string]*lastDayTierStats),
}
}
// Init initializes t with given objAPI and instantiates the configured number
// of transition workers.
func (t *transitionState) Init(objAPI ObjectLayer) {
n := globalAPIConfig.getTransitionWorkers()
t.mu.Lock()
defer t.mu.Unlock()
t.objAPI = objAPI
t.updateWorkers(n)
}
// PendingTasks returns the number of ILM transition tasks waiting for a worker
// goroutine.
func (t *transitionState) PendingTasks() int {
return len(t.transitionCh)
}
// ActiveTasks returns the number of active (ongoing) ILM transition tasks.
func (t *transitionState) ActiveTasks() int {
return int(atomic.LoadInt32(&t.activeTasks))
}
// worker waits for transition tasks
func (t *transitionState) worker(objectAPI ObjectLayer) {
for {
select {
case <-t.killCh:
return
case <-t.ctx.Done():
return
case task, ok := <-t.transitionCh:
if !ok {
return
}
atomic.AddInt32(&t.activeTasks, 1)
if err := transitionObject(t.ctx, objectAPI, task.objInfo, newLifecycleAuditEvent(task.src, task.event)); err != nil {
if !isErrVersionNotFound(err) && !isErrObjectNotFound(err) {
logger.LogIf(t.ctx, fmt.Errorf("Transition to %s failed for %s/%s version:%s with %w",
task.event.StorageClass, task.objInfo.Bucket, task.objInfo.Name, task.objInfo.VersionID, err))
}
} else {
ts := tierStats{
TotalSize: uint64(task.objInfo.Size),
NumVersions: 1,
}
if task.objInfo.IsLatest {
ts.NumObjects = 1
}
t.addLastDayStats(task.event.StorageClass, ts)
}
atomic.AddInt32(&t.activeTasks, -1)
}
}
}
func (t *transitionState) addLastDayStats(tier string, ts tierStats) {
t.lastDayMu.Lock()
defer t.lastDayMu.Unlock()
if _, ok := t.lastDayStats[tier]; !ok {
t.lastDayStats[tier] = &lastDayTierStats{}
}
t.lastDayStats[tier].addStats(ts)
}
func (t *transitionState) getDailyAllTierStats() DailyAllTierStats {
t.lastDayMu.RLock()
defer t.lastDayMu.RUnlock()
res := make(DailyAllTierStats, len(t.lastDayStats))
for tier, st := range t.lastDayStats {
res[tier] = st.clone()
}
return res
}
// UpdateWorkers at the end of this function leaves n goroutines waiting for
// transition tasks
func (t *transitionState) UpdateWorkers(n int) {
t.mu.Lock()
defer t.mu.Unlock()
if t.objAPI == nil { // Init hasn't been called yet.
return
}
t.updateWorkers(n)
}
func (t *transitionState) updateWorkers(n int) {
for t.numWorkers < n {
go t.worker(t.objAPI)
t.numWorkers++
}
for t.numWorkers > n {
go func() { t.killCh <- struct{}{} }()
t.numWorkers--
}
}
var errInvalidStorageClass = errors.New("invalid storage class")
func validateTransitionTier(lc *lifecycle.Lifecycle) error {
for _, rule := range lc.Rules {
if rule.Transition.StorageClass != "" {
if valid := globalTierConfigMgr.IsTierValid(rule.Transition.StorageClass); !valid {
return errInvalidStorageClass
}
}
if rule.NoncurrentVersionTransition.StorageClass != "" {
if valid := globalTierConfigMgr.IsTierValid(rule.NoncurrentVersionTransition.StorageClass); !valid {
return errInvalidStorageClass
}
}
}
return nil
}
// enqueueTransitionImmediate enqueues obj for transition if eligible.
// This is to be called after a successful upload of an object (version).
func enqueueTransitionImmediate(obj ObjectInfo, src lcEventSrc) {
if lc, err := globalLifecycleSys.Get(obj.Bucket); err == nil {
switch event := lc.Eval(obj.ToLifecycleOpts()); event.Action {
case lifecycle.TransitionAction, lifecycle.TransitionVersionAction:
globalTransitionState.queueTransitionTask(obj, event, src)
}
}
}
// expireTransitionedObject handles expiry of transitioned/restored objects
// (versions) in one of the following situations:
//
// 1. when a restored (via PostRestoreObject API) object expires.
// 2. when a transitioned object expires (based on an ILM rule).
func expireTransitionedObject(ctx context.Context, objectAPI ObjectLayer, oi *ObjectInfo, lcOpts lifecycle.ObjectOpts, lcEvent lifecycle.Event, src lcEventSrc) error {
traceFn := globalLifecycleSys.trace(*oi)
var opts ObjectOptions
opts.Versioned = globalBucketVersioningSys.PrefixEnabled(oi.Bucket, oi.Name)
opts.VersionID = lcOpts.VersionID
opts.Expiration = ExpirationOptions{Expire: true}
tags := newLifecycleAuditEvent(src, lcEvent).Tags()
if lcEvent.Action.DeleteRestored() {
// delete locally restored copy of object or object version
// from the source, while leaving metadata behind. The data on
// transitioned tier lies untouched and still accessible
opts.Transition.ExpireRestored = true
_, err := objectAPI.DeleteObject(ctx, oi.Bucket, oi.Name, opts)
if err == nil {
// TODO consider including expiry of restored object to events we
// notify.
auditLogLifecycle(ctx, *oi, ILMExpiry, tags, traceFn)
}
return err
}
// When an object is past expiry or when a transitioned object is being
// deleted, 'mark' the data in the remote tier for delete.
entry := jentry{
ObjName: oi.TransitionedObject.Name,
VersionID: oi.TransitionedObject.VersionID,
TierName: oi.TransitionedObject.Tier,
}
if err := globalTierJournal.AddEntry(entry); err != nil {
return err
}
// Delete metadata on source, now that data in remote tier has been
// marked for deletion.
if _, err := objectAPI.DeleteObject(ctx, oi.Bucket, oi.Name, opts); err != nil {
return err
}
// Send audit for the lifecycle delete operation
defer auditLogLifecycle(ctx, *oi, ILMExpiry, tags, traceFn)
eventName := event.ObjectRemovedDelete
if lcOpts.DeleteMarker {
eventName = event.ObjectRemovedDeleteMarkerCreated
}
objInfo := ObjectInfo{
Name: oi.Name,
VersionID: lcOpts.VersionID,
DeleteMarker: lcOpts.DeleteMarker,
}
// Notify object deleted event.
sendEvent(eventArgs{
EventName: eventName,
BucketName: oi.Bucket,
Object: objInfo,
UserAgent: "Internal: [ILM-Expiry]",
Host: globalLocalNodeName,
})
return nil
}
// generate an object name for transitioned object
func genTransitionObjName(bucket string) (string, error) {
u, err := uuid.NewRandom()
if err != nil {
return "", err
}
us := u.String()
obj := fmt.Sprintf("%s/%s/%s/%s/%s", globalDeploymentID, bucket, us[0:2], us[2:4], us)
return obj, nil
}
// transition object to target specified by the transition ARN. When an object is transitioned to another
// storage specified by the transition ARN, the metadata is left behind on source cluster and original content
// is moved to the transition tier. Note that in the case of encrypted objects, entire encrypted stream is moved
// to the transition tier without decrypting or re-encrypting.
func transitionObject(ctx context.Context, objectAPI ObjectLayer, oi ObjectInfo, lae lcAuditEvent) error {
opts := ObjectOptions{
Transition: TransitionOptions{
Status: lifecycle.TransitionPending,
Tier: lae.StorageClass,
ETag: oi.ETag,
},
LifecycleAuditEvent: lae,
VersionID: oi.VersionID,
Versioned: globalBucketVersioningSys.PrefixEnabled(oi.Bucket, oi.Name),
VersionSuspended: globalBucketVersioningSys.PrefixSuspended(oi.Bucket, oi.Name),
MTime: oi.ModTime,
}
return objectAPI.TransitionObject(ctx, oi.Bucket, oi.Name, opts)
}
type auditTierOp struct {
Tier string `json:"tier"`
TimeToResponseNS int64 `json:"timeToResponseNS"`
OutputBytes int64 `json:"tx,omitempty"`
Error string `json:"error,omitempty"`
}
func auditTierActions(ctx context.Context, tier string, bytes int64) func(err error) {
startTime := time.Now()
return func(err error) {
// Record only when audit targets configured.
if len(logger.AuditTargets()) == 0 {
return
}
op := auditTierOp{
Tier: tier,
OutputBytes: bytes,
}
if err == nil {
op.TimeToResponseNS = time.Since(startTime).Nanoseconds()
} else {
op.Error = err.Error()
}
logger.GetReqInfo(ctx).AppendTags("tierStats", op)
}
}
// getTransitionedObjectReader returns a reader from the transitioned tier.
func getTransitionedObjectReader(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, oi ObjectInfo, opts ObjectOptions) (gr *GetObjectReader, err error) {
tgtClient, err := globalTierConfigMgr.getDriver(oi.TransitionedObject.Tier)
if err != nil {
return nil, fmt.Errorf("transition storage class not configured")
}
fn, off, length, err := NewGetObjectReader(rs, oi, opts)
if err != nil {
return nil, ErrorRespToObjectError(err, bucket, object)
}
gopts := WarmBackendGetOpts{}
// get correct offsets for object
if off >= 0 && length >= 0 {
gopts.startOffset = off
gopts.length = length
}
timeTierAction := auditTierActions(ctx, oi.TransitionedObject.Tier, length)
reader, err := tgtClient.Get(ctx, oi.TransitionedObject.Name, remoteVersionID(oi.TransitionedObject.VersionID), gopts)
if err != nil {
return nil, err
}
closer := func() {
timeTierAction(reader.Close())
}
return fn(reader, h, closer)
}
// RestoreRequestType represents type of restore.
type RestoreRequestType string
const (
// SelectRestoreRequest specifies select request. This is the only valid value
SelectRestoreRequest RestoreRequestType = "SELECT"
)
// Encryption specifies encryption setting on restored bucket
type Encryption struct {
EncryptionType sse.Algorithm `xml:"EncryptionType"`
KMSContext string `xml:"KMSContext,omitempty"`
KMSKeyID string `xml:"KMSKeyId,omitempty"`
}
// MetadataEntry denotes name and value.
type MetadataEntry struct {
Name string `xml:"Name"`
Value string `xml:"Value"`
}
// S3Location specifies s3 location that receives result of a restore object request
type S3Location struct {
BucketName string `xml:"BucketName,omitempty"`
Encryption Encryption `xml:"Encryption,omitempty"`
Prefix string `xml:"Prefix,omitempty"`
StorageClass string `xml:"StorageClass,omitempty"`
Tagging *tags.Tags `xml:"Tagging,omitempty"`
UserMetadata []MetadataEntry `xml:"UserMetadata"`
}
// OutputLocation specifies bucket where object needs to be restored
type OutputLocation struct {
S3 S3Location `xml:"S3,omitempty"`
}
// IsEmpty returns true if output location not specified.
func (o *OutputLocation) IsEmpty() bool {
return o.S3.BucketName == ""
}
// SelectParameters specifies sql select parameters
type SelectParameters struct {
s3select.S3Select
}
// IsEmpty returns true if no select parameters set
func (sp *SelectParameters) IsEmpty() bool {
return sp == nil
}
var selectParamsXMLName = "SelectParameters"
// UnmarshalXML - decodes XML data.
func (sp *SelectParameters) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
// Essentially the same as S3Select barring the xml name.
if start.Name.Local == selectParamsXMLName {
start.Name = xml.Name{Space: "", Local: "SelectRequest"}
}
return sp.S3Select.UnmarshalXML(d, start)
}
// RestoreObjectRequest - xml to restore a transitioned object
type RestoreObjectRequest struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ RestoreRequest" json:"-"`
Days int `xml:"Days,omitempty"`
Type RestoreRequestType `xml:"Type,omitempty"`
Tier string `xml:"Tier"`
Description string `xml:"Description,omitempty"`
SelectParameters *SelectParameters `xml:"SelectParameters,omitempty"`
OutputLocation OutputLocation `xml:"OutputLocation,omitempty"`
}
// Maximum 2MiB size per restore object request.
const maxRestoreObjectRequestSize = 2 << 20
// parseRestoreRequest parses RestoreObjectRequest from xml
func parseRestoreRequest(reader io.Reader) (*RestoreObjectRequest, error) {
req := RestoreObjectRequest{}
if err := xml.NewDecoder(io.LimitReader(reader, maxRestoreObjectRequestSize)).Decode(&req); err != nil {
return nil, err
}
return &req, nil
}
// validate a RestoreObjectRequest as per AWS S3 spec https://docs.aws.amazon.com/AmazonS3/latest/API/API_RestoreObject.html
func (r *RestoreObjectRequest) validate(ctx context.Context, objAPI ObjectLayer) error {
if r.Type != SelectRestoreRequest && !r.SelectParameters.IsEmpty() {
return fmt.Errorf("Select parameters can only be specified with SELECT request type")
}
if r.Type == SelectRestoreRequest && r.SelectParameters.IsEmpty() {
return fmt.Errorf("SELECT restore request requires select parameters to be specified")
}
if r.Type != SelectRestoreRequest && !r.OutputLocation.IsEmpty() {
return fmt.Errorf("OutputLocation required only for SELECT request type")
}
if r.Type == SelectRestoreRequest && r.OutputLocation.IsEmpty() {
return fmt.Errorf("OutputLocation required for SELECT requests")
}
if r.Days != 0 && r.Type == SelectRestoreRequest {
return fmt.Errorf("Days cannot be specified with SELECT restore request")
}
if r.Days == 0 && r.Type != SelectRestoreRequest {
return fmt.Errorf("restoration days should be at least 1")
}
// Check if bucket exists.
if !r.OutputLocation.IsEmpty() {
if _, err := objAPI.GetBucketInfo(ctx, r.OutputLocation.S3.BucketName, BucketOptions{}); err != nil {
return err
}
if r.OutputLocation.S3.Prefix == "" {
return fmt.Errorf("Prefix is a required parameter in OutputLocation")
}
if r.OutputLocation.S3.Encryption.EncryptionType != xhttp.AmzEncryptionAES {
return NotImplemented{}
}
}
return nil
}
// postRestoreOpts returns ObjectOptions with version-id from the POST restore object request for a given bucket and object.
func postRestoreOpts(ctx context.Context, r *http.Request, bucket, object string) (opts ObjectOptions, err error) {
versioned := globalBucketVersioningSys.PrefixEnabled(bucket, object)
versionSuspended := globalBucketVersioningSys.PrefixSuspended(bucket, object)
vid := strings.TrimSpace(r.Form.Get(xhttp.VersionID))
if vid != "" && vid != nullVersionID {
_, err := uuid.Parse(vid)
if err != nil {
logger.LogIf(ctx, err)
return opts, InvalidVersionID{
Bucket: bucket,
Object: object,
VersionID: vid,
}
}
if !versioned && !versionSuspended {
return opts, InvalidArgument{
Bucket: bucket,
Object: object,
Err: fmt.Errorf("version-id specified %s but versioning is not enabled on %s", opts.VersionID, bucket),
}
}
}
return ObjectOptions{
Versioned: versioned,
VersionSuspended: versionSuspended,
VersionID: vid,
}, nil
}
// set ObjectOptions for PUT call to restore temporary copy of transitioned data
func putRestoreOpts(bucket, object string, rreq *RestoreObjectRequest, objInfo ObjectInfo) (putOpts ObjectOptions) {
meta := make(map[string]string)
sc := rreq.OutputLocation.S3.StorageClass
if sc == "" {
sc = objInfo.StorageClass
}
meta[strings.ToLower(xhttp.AmzStorageClass)] = sc
if rreq.Type == SelectRestoreRequest {
for _, v := range rreq.OutputLocation.S3.UserMetadata {
if !stringsHasPrefixFold(v.Name, "x-amz-meta") {
meta["x-amz-meta-"+v.Name] = v.Value
continue
}
meta[v.Name] = v.Value
}
if tags := rreq.OutputLocation.S3.Tagging.String(); tags != "" {
meta[xhttp.AmzObjectTagging] = tags
}
if rreq.OutputLocation.S3.Encryption.EncryptionType != "" {
meta[xhttp.AmzServerSideEncryption] = xhttp.AmzEncryptionAES
}
return ObjectOptions{
Versioned: globalBucketVersioningSys.PrefixEnabled(bucket, object),
VersionSuspended: globalBucketVersioningSys.PrefixSuspended(bucket, object),
UserDefined: meta,
}
}
for k, v := range objInfo.UserDefined {
meta[k] = v
}
if len(objInfo.UserTags) != 0 {
meta[xhttp.AmzObjectTagging] = objInfo.UserTags
}
// Set restore object status
restoreExpiry := lifecycle.ExpectedExpiryTime(time.Now().UTC(), rreq.Days)
meta[xhttp.AmzRestore] = completedRestoreObj(restoreExpiry).String()
return ObjectOptions{
Versioned: globalBucketVersioningSys.PrefixEnabled(bucket, object),
VersionSuspended: globalBucketVersioningSys.PrefixSuspended(bucket, object),
UserDefined: meta,
VersionID: objInfo.VersionID,
MTime: objInfo.ModTime,
Expires: objInfo.Expires,
}
}
var errRestoreHDRMalformed = fmt.Errorf("x-amz-restore header malformed")
// IsRemote returns true if this object version's contents are in its remote
// tier.
func (fi FileInfo) IsRemote() bool {
if fi.TransitionStatus != lifecycle.TransitionComplete {
return false
}
return !isRestoredObjectOnDisk(fi.Metadata)
}
// IsRemote returns true if this object version's contents are in its remote
// tier.
func (oi ObjectInfo) IsRemote() bool {
if oi.TransitionedObject.Status != lifecycle.TransitionComplete {
return false
}
return !isRestoredObjectOnDisk(oi.UserDefined)
}
// restoreObjStatus represents a restore-object's status. It can be either
// ongoing or completed.
type restoreObjStatus struct {
ongoing bool
expiry time.Time
}
// ongoingRestoreObj constructs restoreObjStatus for an ongoing restore-object.
func ongoingRestoreObj() restoreObjStatus {
return restoreObjStatus{
ongoing: true,
}
}
// completeRestoreObj constructs restoreObjStatus for a completed restore-object with given expiry.
func completedRestoreObj(expiry time.Time) restoreObjStatus {
return restoreObjStatus{
ongoing: false,
expiry: expiry.UTC(),
}
}
// String returns x-amz-restore compatible representation of r.
func (r restoreObjStatus) String() string {
if r.Ongoing() {
return `ongoing-request="true"`
}
return fmt.Sprintf(`ongoing-request="false", expiry-date="%s"`, r.expiry.Format(http.TimeFormat))
}
// Expiry returns expiry of restored object and true if restore-object has completed.
// Otherwise returns zero value of time.Time and false.
func (r restoreObjStatus) Expiry() (time.Time, bool) {
if r.Ongoing() {
return time.Time{}, false
}
return r.expiry, true
}
// Ongoing returns true if restore-object is ongoing.
func (r restoreObjStatus) Ongoing() bool {
return r.ongoing
}
// OnDisk returns true if restored object contents exist in MinIO. Otherwise returns false.
// The restore operation could be in one of the following states,
// - in progress (no content on MinIO's disks yet)
// - completed
// - completed but expired (again, no content on MinIO's disks)
func (r restoreObjStatus) OnDisk() bool {
if expiry, ok := r.Expiry(); ok && time.Now().UTC().Before(expiry) {
// completed
return true
}
return false // in progress or completed but expired
}
// parseRestoreObjStatus parses restoreHdr from AmzRestore header. If the value is valid it returns a
// restoreObjStatus value with the status and expiry (if any). Otherwise returns
// the empty value and an error indicating the parse failure.
func parseRestoreObjStatus(restoreHdr string) (restoreObjStatus, error) {
tokens := strings.SplitN(restoreHdr, ",", 2)
progressTokens := strings.SplitN(tokens[0], "=", 2)
if len(progressTokens) != 2 {
return restoreObjStatus{}, errRestoreHDRMalformed
}
if strings.TrimSpace(progressTokens[0]) != "ongoing-request" {
return restoreObjStatus{}, errRestoreHDRMalformed
}
switch progressTokens[1] {
case "true", `"true"`: // true without double quotes is deprecated in Feb 2022
if len(tokens) == 1 {
return ongoingRestoreObj(), nil
}
case "false", `"false"`: // false without double quotes is deprecated in Feb 2022
if len(tokens) != 2 {
return restoreObjStatus{}, errRestoreHDRMalformed
}
expiryTokens := strings.SplitN(tokens[1], "=", 2)
if len(expiryTokens) != 2 {
return restoreObjStatus{}, errRestoreHDRMalformed
}
if strings.TrimSpace(expiryTokens[0]) != "expiry-date" {
return restoreObjStatus{}, errRestoreHDRMalformed
}
expiry, err := amztime.ParseHeader(strings.Trim(expiryTokens[1], `"`))
if err != nil {
return restoreObjStatus{}, errRestoreHDRMalformed
}
return completedRestoreObj(expiry), nil
}
return restoreObjStatus{}, errRestoreHDRMalformed
}
// isRestoredObjectOnDisk returns true if the restored object is on disk. Note
// this function must be called only if object version's transition status is
// complete.
func isRestoredObjectOnDisk(meta map[string]string) (onDisk bool) {
if restoreHdr, ok := meta[xhttp.AmzRestore]; ok {
if restoreStatus, err := parseRestoreObjStatus(restoreHdr); err == nil {
return restoreStatus.OnDisk()
}
}
return onDisk
}
// ToLifecycleOpts returns lifecycle.ObjectOpts value for oi.
func (oi ObjectInfo) ToLifecycleOpts() lifecycle.ObjectOpts {
return lifecycle.ObjectOpts{
Name: oi.Name,
UserTags: oi.UserTags,
VersionID: oi.VersionID,
ModTime: oi.ModTime,
IsLatest: oi.IsLatest,
NumVersions: oi.NumVersions,
DeleteMarker: oi.DeleteMarker,
SuccessorModTime: oi.SuccessorModTime,
RestoreOngoing: oi.RestoreOngoing,
RestoreExpires: oi.RestoreExpires,
TransitionStatus: oi.TransitionedObject.Status,
}
}