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1770 lines (1649 loc) · 57 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"
"fmt"
"io"
"net/http"
"reflect"
"strings"
"sync"
"time"
"github.com/minio/madmin-go"
"github.com/minio/minio-go/v7"
miniogo "github.com/minio/minio-go/v7"
"github.com/minio/minio-go/v7/pkg/encrypt"
"github.com/minio/minio-go/v7/pkg/tags"
"github.com/minio/minio/internal/bucket/bandwidth"
"github.com/minio/minio/internal/bucket/replication"
"github.com/minio/minio/internal/config/storageclass"
"github.com/minio/minio/internal/crypto"
"github.com/minio/minio/internal/event"
"github.com/minio/minio/internal/hash"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/minio/internal/logger"
)
const (
throttleDeadline = 1 * time.Hour
// ReplicationReset has reset id and timestamp of last reset operation
ReplicationReset = "replication-reset"
// ReplicationStatus has internal replication status - stringified representation of target's replication status for all replication
// activity initiated from this cluster
ReplicationStatus = "replication-status"
// ReplicationTimestamp - the last time replication was initiated on this cluster for this object version
ReplicationTimestamp = "replication-timestamp"
// ReplicaStatus - this header is present if a replica was received by this cluster for this object version
ReplicaStatus = "replica-status"
// ReplicaTimestamp - the last time a replica was received by this cluster for this object version
ReplicaTimestamp = "replica-timestamp"
// TaggingTimestamp - the last time a tag metadata modification happened on this cluster for this object version
TaggingTimestamp = "tagging-timestamp"
// ObjectLockRetentionTimestamp - the last time a object lock metadata modification happened on this cluster for this object version
ObjectLockRetentionTimestamp = "objectlock-retention-timestamp"
// ObjectLockLegalHoldTimestamp - the last time a legal hold metadata modification happened on this cluster for this object version
ObjectLockLegalHoldTimestamp = "objectlock-legalhold-timestamp"
)
// gets replication config associated to a given bucket name.
func getReplicationConfig(ctx context.Context, bucketName string) (rc *replication.Config, err error) {
if globalIsGateway {
objAPI := newObjectLayerFn()
if objAPI == nil {
return rc, errServerNotInitialized
}
return rc, BucketReplicationConfigNotFound{Bucket: bucketName}
}
return globalBucketMetadataSys.GetReplicationConfig(ctx, bucketName)
}
// validateReplicationDestination returns error if replication destination bucket missing or not configured
// It also returns true if replication destination is same as this server.
func validateReplicationDestination(ctx context.Context, bucket string, rCfg *replication.Config) (bool, APIError) {
var arns []string
if rCfg.RoleArn != "" {
arns = append(arns, rCfg.RoleArn)
} else {
for _, rule := range rCfg.Rules {
arns = append(arns, rule.Destination.String())
}
}
for _, arnStr := range arns {
arn, err := madmin.ParseARN(arnStr)
if err != nil {
return false, errorCodes.ToAPIErrWithErr(ErrBucketRemoteArnInvalid, err)
}
if arn.Type != madmin.ReplicationService {
return false, toAPIError(ctx, BucketRemoteArnTypeInvalid{Bucket: bucket})
}
clnt := globalBucketTargetSys.GetRemoteTargetClient(ctx, arnStr)
if clnt == nil {
return false, toAPIError(ctx, BucketRemoteTargetNotFound{Bucket: bucket})
}
if found, err := clnt.BucketExists(ctx, arn.Bucket); !found {
return false, errorCodes.ToAPIErrWithErr(ErrRemoteDestinationNotFoundError, err)
}
if ret, err := globalBucketObjectLockSys.Get(bucket); err == nil {
if ret.LockEnabled {
lock, _, _, _, err := clnt.GetObjectLockConfig(ctx, arn.Bucket)
if err != nil || lock != "Enabled" {
return false, errorCodes.ToAPIErrWithErr(ErrReplicationDestinationMissingLock, err)
}
}
}
// validate replication ARN against target endpoint
c, ok := globalBucketTargetSys.arnRemotesMap[arnStr]
if ok {
if c.EndpointURL().String() == clnt.EndpointURL().String() {
sameTarget, _ := isLocalHost(clnt.EndpointURL().Hostname(), clnt.EndpointURL().Port(), globalMinioPort)
return sameTarget, toAPIError(ctx, nil)
}
}
}
return false, toAPIError(ctx, BucketRemoteTargetNotFound{Bucket: bucket})
}
type mustReplicateOptions struct {
meta map[string]string
status replication.StatusType
opType replication.Type
replicationRequest bool // incoming request is a replication request
}
func (o mustReplicateOptions) ReplicationStatus() (s replication.StatusType) {
if rs, ok := o.meta[xhttp.AmzBucketReplicationStatus]; ok {
return replication.StatusType(rs)
}
return s
}
func (o mustReplicateOptions) isExistingObjectReplication() bool {
return o.opType == replication.ExistingObjectReplicationType
}
func (o mustReplicateOptions) isMetadataReplication() bool {
return o.opType == replication.MetadataReplicationType
}
func getMustReplicateOptions(o ObjectInfo, op replication.Type, opts ObjectOptions) mustReplicateOptions {
if !op.Valid() {
op = replication.ObjectReplicationType
if o.metadataOnly {
op = replication.MetadataReplicationType
}
}
meta := cloneMSS(o.UserDefined)
if o.UserTags != "" {
meta[xhttp.AmzObjectTagging] = o.UserTags
}
return mustReplicateOptions{
meta: meta,
status: o.ReplicationStatus,
opType: op,
replicationRequest: opts.ReplicationRequest,
}
}
// mustReplicate returns 2 booleans - true if object meets replication criteria and true if replication is to be done in
// a synchronous manner.
func mustReplicate(ctx context.Context, bucket, object string, mopts mustReplicateOptions) (dsc ReplicateDecision) {
if globalIsGateway {
return
}
replStatus := mopts.ReplicationStatus()
if replStatus == replication.Replica && !mopts.isMetadataReplication() {
return
}
if mopts.replicationRequest { // incoming replication request on target cluster
return
}
cfg, err := getReplicationConfig(ctx, bucket)
if err != nil {
return
}
opts := replication.ObjectOpts{
Name: object,
SSEC: crypto.SSEC.IsEncrypted(mopts.meta),
Replica: replStatus == replication.Replica,
ExistingObject: mopts.isExistingObjectReplication(),
}
tagStr, ok := mopts.meta[xhttp.AmzObjectTagging]
if ok {
opts.UserTags = tagStr
}
tgtArns := cfg.FilterTargetArns(opts)
for _, tgtArn := range tgtArns {
tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, tgtArn)
// the target online status should not be used here while deciding
// whether to replicate as the target could be temporarily down
opts.TargetArn = tgtArn
replicate := cfg.Replicate(opts)
var synchronous bool
if tgt != nil {
synchronous = tgt.replicateSync
}
dsc.Set(newReplicateTargetDecision(tgtArn, replicate, synchronous))
}
return dsc
}
// Standard headers that needs to be extracted from User metadata.
var standardHeaders = []string{
xhttp.ContentType,
xhttp.CacheControl,
xhttp.ContentEncoding,
xhttp.ContentLanguage,
xhttp.ContentDisposition,
xhttp.AmzStorageClass,
xhttp.AmzObjectTagging,
xhttp.AmzBucketReplicationStatus,
xhttp.AmzObjectLockMode,
xhttp.AmzObjectLockRetainUntilDate,
xhttp.AmzObjectLockLegalHold,
xhttp.AmzTagCount,
xhttp.AmzServerSideEncryption,
}
// returns true if any of the objects being deleted qualifies for replication.
func hasReplicationRules(ctx context.Context, bucket string, objects []ObjectToDelete) bool {
c, err := getReplicationConfig(ctx, bucket)
if err != nil || c == nil {
return false
}
for _, obj := range objects {
if c.HasActiveRules(obj.ObjectName, true) {
return true
}
}
return false
}
// isStandardHeader returns true if header is a supported header and not a custom header
func isStandardHeader(matchHeaderKey string) bool {
return equals(matchHeaderKey, standardHeaders...)
}
// returns whether object version is a deletemarker and if object qualifies for replication
func checkReplicateDelete(ctx context.Context, bucket string, dobj ObjectToDelete, oi ObjectInfo, delOpts ObjectOptions, gerr error) (dsc ReplicateDecision) {
rcfg, err := getReplicationConfig(ctx, bucket)
if err != nil || rcfg == nil {
return
}
// If incoming request is a replication request, it does not need to be re-replicated.
if delOpts.ReplicationRequest {
return
}
opts := replication.ObjectOpts{
Name: dobj.ObjectName,
SSEC: crypto.SSEC.IsEncrypted(oi.UserDefined),
UserTags: oi.UserTags,
DeleteMarker: oi.DeleteMarker,
VersionID: dobj.VersionID,
OpType: replication.DeleteReplicationType,
}
tgtArns := rcfg.FilterTargetArns(opts)
if len(tgtArns) > 0 {
dsc.targetsMap = make(map[string]replicateTargetDecision, len(tgtArns))
var sync, replicate bool
for _, tgtArn := range tgtArns {
opts.TargetArn = tgtArn
replicate = rcfg.Replicate(opts)
// when incoming delete is removal of a delete marker( a.k.a versioned delete),
// GetObjectInfo returns extra information even though it returns errFileNotFound
if gerr != nil {
validReplStatus := false
switch oi.TargetReplicationStatus(tgtArn) {
case replication.Pending, replication.Completed, replication.Failed:
validReplStatus = true
}
if oi.DeleteMarker && (validReplStatus || replicate) {
dsc.Set(newReplicateTargetDecision(tgtArn, replicate, sync))
continue
} else {
// can be the case that other cluster is down and duplicate `mc rm --vid`
// is issued - this still needs to be replicated back to the other target
replicate = oi.VersionPurgeStatus == Pending || oi.VersionPurgeStatus == Failed
dsc.Set(newReplicateTargetDecision(tgtArn, replicate, sync))
continue
}
}
tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, tgtArn)
// the target online status should not be used here while deciding
// whether to replicate deletes as the target could be temporarily down
tgtDsc := newReplicateTargetDecision(tgtArn, false, false)
if tgt != nil {
tgtDsc = newReplicateTargetDecision(tgtArn, replicate, tgt.replicateSync)
}
dsc.Set(tgtDsc)
}
}
return dsc
}
// replicate deletes to the designated replication target if replication configuration
// has delete marker replication or delete replication (MinIO extension to allow deletes where version id
// is specified) enabled.
// Similar to bucket replication for PUT operation, soft delete (a.k.a setting delete marker) and
// permanent deletes (by specifying a version ID in the delete operation) have three states "Pending", "Complete"
// and "Failed" to mark the status of the replication of "DELETE" operation. All failed operations can
// then be retried by healing. In the case of permanent deletes, until the replication is completed on the
// target cluster, the object version is marked deleted on the source and hidden from listing. It is permanently
// deleted from the source when the VersionPurgeStatus changes to "Complete", i.e after replication succeeds
// on target.
func replicateDelete(ctx context.Context, dobj DeletedObjectReplicationInfo, objectAPI ObjectLayer, trigger string) {
var replicationStatus replication.StatusType
bucket := dobj.Bucket
versionID := dobj.DeleteMarkerVersionID
if versionID == "" {
versionID = dobj.VersionID
}
defer func() {
replStatus := string(replicationStatus)
auditLogInternal(context.Background(), bucket, dobj.ObjectName, AuditLogOptions{
Trigger: trigger,
APIName: ReplicateDeleteAPI,
VersionID: versionID,
Status: replStatus,
})
}()
rcfg, err := getReplicationConfig(ctx, bucket)
if err != nil || rcfg == nil {
logger.LogIf(ctx, err)
sendEvent(eventArgs{
BucketName: bucket,
Object: ObjectInfo{
Bucket: bucket,
Name: dobj.ObjectName,
VersionID: versionID,
DeleteMarker: dobj.DeleteMarker,
},
Host: "Internal: [Replication]",
EventName: event.ObjectReplicationNotTracked,
})
return
}
dsc, err := parseReplicateDecision(dobj.ReplicationState.ReplicateDecisionStr)
if err != nil {
logger.LogIf(ctx, err)
sendEvent(eventArgs{
BucketName: bucket,
Object: ObjectInfo{
Bucket: bucket,
Name: dobj.ObjectName,
VersionID: versionID,
DeleteMarker: dobj.DeleteMarker,
},
Host: "Internal: [Replication]",
EventName: event.ObjectReplicationNotTracked,
})
return
}
// Lock the object name before starting replication operation.
// Use separate lock that doesn't collide with regular objects.
lk := objectAPI.NewNSLock(bucket, "/[replicate]/"+dobj.ObjectName)
lkctx, err := lk.GetLock(ctx, globalOperationTimeout)
if err != nil {
logger.LogIf(ctx, fmt.Errorf("failed to get lock for object: %s bucket:%s arn:%s", dobj.ObjectName, bucket, rcfg.RoleArn))
sendEvent(eventArgs{
BucketName: bucket,
Object: ObjectInfo{
Bucket: bucket,
Name: dobj.ObjectName,
VersionID: versionID,
DeleteMarker: dobj.DeleteMarker,
},
Host: "Internal: [Replication]",
EventName: event.ObjectReplicationNotTracked,
})
return
}
ctx = lkctx.Context()
defer lk.Unlock(lkctx.Cancel)
var wg sync.WaitGroup
var rinfos replicatedInfos
rinfos.Targets = make([]replicatedTargetInfo, len(dsc.targetsMap))
idx := -1
for tgtArn := range dsc.targetsMap {
idx++
tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, tgtArn)
if tgt == nil {
logger.LogIf(ctx, fmt.Errorf("failed to get target for bucket:%s arn:%s", bucket, tgtArn))
sendEvent(eventArgs{
BucketName: bucket,
Object: ObjectInfo{
Bucket: bucket,
Name: dobj.ObjectName,
VersionID: versionID,
DeleteMarker: dobj.DeleteMarker,
},
Host: "Internal: [Replication]",
EventName: event.ObjectReplicationNotTracked,
})
continue
}
if tgt := dsc.targetsMap[tgtArn]; !tgt.Replicate {
continue
}
// if dobj.TargetArn is not empty string, this is a case of specific target being re-synced.
if dobj.TargetArn != "" && dobj.TargetArn != tgt.ARN {
continue
}
wg.Add(1)
go func(index int, tgt *TargetClient) {
defer wg.Done()
rinfo := replicateDeleteToTarget(ctx, dobj, objectAPI, tgt)
rinfos.Targets[index] = rinfo
}(idx, tgt)
}
wg.Wait()
replicationStatus = rinfos.ReplicationStatus()
prevStatus := dobj.DeleteMarkerReplicationStatus()
if dobj.VersionID != "" {
prevStatus = replication.StatusType(dobj.VersionPurgeStatus())
replicationStatus = replication.StatusType(rinfos.VersionPurgeStatus())
}
// to decrement pending count later.
for _, rinfo := range rinfos.Targets {
if rinfo.ReplicationStatus != rinfo.PrevReplicationStatus {
globalReplicationStats.Update(dobj.Bucket, rinfo.Arn, 0, replicationStatus,
prevStatus, replication.DeleteReplicationType)
}
}
var eventName = event.ObjectReplicationComplete
if replicationStatus == replication.Failed {
eventName = event.ObjectReplicationFailed
}
drs := getReplicationState(rinfos, dobj.ReplicationState, dobj.VersionID)
dobjInfo, err := objectAPI.DeleteObject(ctx, bucket, dobj.ObjectName, ObjectOptions{
VersionID: versionID,
MTime: dobj.DeleteMarkerMTime.Time,
DeleteReplication: drs,
Versioned: globalBucketVersioningSys.Enabled(bucket),
VersionSuspended: globalBucketVersioningSys.Suspended(bucket),
})
if err != nil && !isErrVersionNotFound(err) { // VersionNotFound would be reported by pool that object version is missing on.
logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s/%s(%s): %s", bucket, dobj.ObjectName, versionID, err))
sendEvent(eventArgs{
BucketName: bucket,
Object: ObjectInfo{
Bucket: bucket,
Name: dobj.ObjectName,
VersionID: versionID,
DeleteMarker: dobj.DeleteMarker,
},
Host: "Internal: [Replication]",
EventName: eventName,
})
} else {
sendEvent(eventArgs{
BucketName: bucket,
Object: dobjInfo,
Host: "Internal: [Replication]",
EventName: eventName,
})
}
}
func replicateDeleteToTarget(ctx context.Context, dobj DeletedObjectReplicationInfo, objectAPI ObjectLayer, tgt *TargetClient) (rinfo replicatedTargetInfo) {
versionID := dobj.DeleteMarkerVersionID
if versionID == "" {
versionID = dobj.VersionID
}
rinfo = dobj.ReplicationState.targetState(tgt.ARN)
rinfo.OpType = dobj.OpType
defer func() {
if rinfo.ReplicationStatus == replication.Completed && tgt.ResetID != "" && dobj.OpType == replication.ExistingObjectReplicationType {
rinfo.ResyncTimestamp = fmt.Sprintf("%s;%s", UTCNow().Format(http.TimeFormat), tgt.ResetID)
}
}()
if dobj.VersionID == "" && rinfo.PrevReplicationStatus == replication.Completed && dobj.OpType != replication.ExistingObjectReplicationType {
rinfo.ReplicationStatus = rinfo.PrevReplicationStatus
return
}
if dobj.VersionID != "" && rinfo.VersionPurgeStatus == Complete {
return
}
if tgt.IsOffline() {
logger.LogIf(ctx, fmt.Errorf("remote target is offline for bucket:%s arn:%s", dobj.Bucket, tgt.ARN))
sendEvent(eventArgs{
BucketName: dobj.Bucket,
Object: ObjectInfo{
Bucket: dobj.Bucket,
Name: dobj.ObjectName,
VersionID: dobj.VersionID,
DeleteMarker: dobj.DeleteMarker,
},
Host: "Internal: [Replication]",
EventName: event.ObjectReplicationNotTracked,
})
if dobj.VersionID == "" {
rinfo.ReplicationStatus = replication.Failed
} else {
rinfo.VersionPurgeStatus = Failed
}
return
}
// early return if already replicated delete marker for existing object replication
if dobj.DeleteMarkerVersionID != "" && dobj.OpType == replication.ExistingObjectReplicationType {
if _, err := tgt.StatObject(ctx, tgt.Bucket, dobj.ObjectName, miniogo.StatObjectOptions{
VersionID: versionID,
Internal: miniogo.AdvancedGetOptions{
ReplicationProxyRequest: "false",
}}); isErrMethodNotAllowed(ErrorRespToObjectError(err, dobj.Bucket, dobj.ObjectName)) {
if dobj.VersionID == "" {
rinfo.ReplicationStatus = replication.Completed
} else {
rinfo.VersionPurgeStatus = Complete
}
return
}
}
rmErr := tgt.RemoveObject(ctx, tgt.Bucket, dobj.ObjectName, miniogo.RemoveObjectOptions{
VersionID: versionID,
Internal: miniogo.AdvancedRemoveOptions{
ReplicationDeleteMarker: dobj.DeleteMarkerVersionID != "",
ReplicationMTime: dobj.DeleteMarkerMTime.Time,
ReplicationStatus: miniogo.ReplicationStatusReplica,
ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
},
})
if rmErr != nil {
if dobj.VersionID == "" {
rinfo.ReplicationStatus = replication.Failed
} else {
rinfo.VersionPurgeStatus = Failed
}
logger.LogIf(ctx, fmt.Errorf("Unable to replicate delete marker to %s/%s(%s): %s", tgt.Bucket, dobj.ObjectName, versionID, rmErr))
} else {
if dobj.VersionID == "" {
rinfo.ReplicationStatus = replication.Completed
} else {
rinfo.VersionPurgeStatus = Complete
}
}
return
}
func getCopyObjMetadata(oi ObjectInfo, sc string) map[string]string {
meta := make(map[string]string, len(oi.UserDefined))
for k, v := range oi.UserDefined {
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
continue
}
if equals(k, xhttp.AmzBucketReplicationStatus) {
continue
}
// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
continue
}
meta[k] = v
}
if oi.ContentEncoding != "" {
meta[xhttp.ContentEncoding] = oi.ContentEncoding
}
if oi.ContentType != "" {
meta[xhttp.ContentType] = oi.ContentType
}
if oi.UserTags != "" {
meta[xhttp.AmzObjectTagging] = oi.UserTags
meta[xhttp.AmzTagDirective] = "REPLACE"
}
if sc == "" {
sc = oi.StorageClass
}
// drop non standard storage classes for tiering from replication
if sc != "" && (sc == storageclass.RRS || sc == storageclass.STANDARD) {
meta[xhttp.AmzStorageClass] = sc
}
meta[xhttp.MinIOSourceETag] = oi.ETag
meta[xhttp.MinIOSourceMTime] = oi.ModTime.Format(time.RFC3339Nano)
meta[xhttp.AmzBucketReplicationStatus] = replication.Replica.String()
return meta
}
type caseInsensitiveMap map[string]string
// Lookup map entry case insensitively.
func (m caseInsensitiveMap) Lookup(key string) (string, bool) {
if len(m) == 0 {
return "", false
}
for _, k := range []string{
key,
strings.ToLower(key),
http.CanonicalHeaderKey(key),
} {
v, ok := m[k]
if ok {
return v, ok
}
}
return "", false
}
func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions, err error) {
meta := make(map[string]string)
for k, v := range objInfo.UserDefined {
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
continue
}
if isStandardHeader(k) {
continue
}
meta[k] = v
}
if sc == "" && (objInfo.StorageClass == storageclass.STANDARD || objInfo.StorageClass == storageclass.RRS) {
sc = objInfo.StorageClass
}
putOpts = miniogo.PutObjectOptions{
UserMetadata: meta,
ContentType: objInfo.ContentType,
ContentEncoding: objInfo.ContentEncoding,
StorageClass: sc,
Internal: miniogo.AdvancedPutOptions{
SourceVersionID: objInfo.VersionID,
ReplicationStatus: miniogo.ReplicationStatusReplica,
SourceMTime: objInfo.ModTime,
SourceETag: objInfo.ETag,
ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
},
}
if objInfo.UserTags != "" {
tag, _ := tags.ParseObjectTags(objInfo.UserTags)
if tag != nil {
putOpts.UserTags = tag.ToMap()
// set tag timestamp in opts
tagTimestamp := objInfo.ModTime
if tagTmstampStr, ok := objInfo.UserDefined[ReservedMetadataPrefixLower+TaggingTimestamp]; ok {
tagTimestamp, err = time.Parse(time.RFC3339Nano, tagTmstampStr)
if err != nil {
return putOpts, err
}
}
putOpts.Internal.TaggingTimestamp = tagTimestamp
}
}
lkMap := caseInsensitiveMap(objInfo.UserDefined)
if lang, ok := lkMap.Lookup(xhttp.ContentLanguage); ok {
putOpts.ContentLanguage = lang
}
if disp, ok := lkMap.Lookup(xhttp.ContentDisposition); ok {
putOpts.ContentDisposition = disp
}
if cc, ok := lkMap.Lookup(xhttp.CacheControl); ok {
putOpts.CacheControl = cc
}
if mode, ok := lkMap.Lookup(xhttp.AmzObjectLockMode); ok {
rmode := miniogo.RetentionMode(mode)
putOpts.Mode = rmode
}
if retainDateStr, ok := lkMap.Lookup(xhttp.AmzObjectLockRetainUntilDate); ok {
rdate, err := time.Parse(time.RFC3339, retainDateStr)
if err != nil {
return putOpts, err
}
putOpts.RetainUntilDate = rdate
// set retention timestamp in opts
retTimestamp := objInfo.ModTime
if retainTmstampStr, ok := objInfo.UserDefined[ReservedMetadataPrefixLower+ObjectLockRetentionTimestamp]; ok {
retTimestamp, err = time.Parse(time.RFC3339Nano, retainTmstampStr)
if err != nil {
return putOpts, err
}
}
putOpts.Internal.RetentionTimestamp = retTimestamp
}
if lhold, ok := lkMap.Lookup(xhttp.AmzObjectLockLegalHold); ok {
putOpts.LegalHold = miniogo.LegalHoldStatus(lhold)
// set legalhold timestamp in opts
lholdTimestamp := objInfo.ModTime
if lholdTmstampStr, ok := objInfo.UserDefined[ReservedMetadataPrefixLower+ObjectLockLegalHoldTimestamp]; ok {
lholdTimestamp, err = time.Parse(time.RFC3339Nano, lholdTmstampStr)
if err != nil {
return putOpts, err
}
}
putOpts.Internal.LegalholdTimestamp = lholdTimestamp
}
if crypto.S3.IsEncrypted(objInfo.UserDefined) {
putOpts.ServerSideEncryption = encrypt.NewSSE()
}
return
}
type replicationAction string
const (
replicateMetadata replicationAction = "metadata"
replicateNone replicationAction = "none"
replicateAll replicationAction = "all"
)
// matches k1 with all keys, returns 'true' if one of them matches
func equals(k1 string, keys ...string) bool {
for _, k2 := range keys {
if strings.EqualFold(strings.ToLower(k1), strings.ToLower(k2)) {
return true
}
}
return false
}
// returns replicationAction by comparing metadata between source and target
func getReplicationAction(oi1 ObjectInfo, oi2 minio.ObjectInfo, opType replication.Type) replicationAction {
// Avoid resyncing null versions created prior to enabling replication if target has a newer copy
if opType == replication.ExistingObjectReplicationType &&
oi1.ModTime.Unix() > oi2.LastModified.Unix() && oi1.VersionID == nullVersionID {
return replicateNone
}
// needs full replication
if oi1.ETag != oi2.ETag ||
oi1.VersionID != oi2.VersionID ||
oi1.Size != oi2.Size ||
oi1.DeleteMarker != oi2.IsDeleteMarker ||
oi1.ModTime.Unix() != oi2.LastModified.Unix() {
return replicateAll
}
if oi1.ContentType != oi2.ContentType {
return replicateMetadata
}
if oi1.ContentEncoding != "" {
enc, ok := oi2.Metadata[xhttp.ContentEncoding]
if !ok {
enc, ok = oi2.Metadata[strings.ToLower(xhttp.ContentEncoding)]
if !ok {
return replicateMetadata
}
}
if strings.Join(enc, ",") != oi1.ContentEncoding {
return replicateMetadata
}
}
t, _ := tags.ParseObjectTags(oi1.UserTags)
if !reflect.DeepEqual(oi2.UserTags, t.ToMap()) {
return replicateMetadata
}
// Compare only necessary headers
compareKeys := []string{
"Expires",
"Cache-Control",
"Content-Language",
"Content-Disposition",
"X-Amz-Object-Lock-Mode",
"X-Amz-Object-Lock-Retain-Until-Date",
"X-Amz-Object-Lock-Legal-Hold",
"X-Amz-Website-Redirect-Location",
"X-Amz-Meta-",
}
// compare metadata on both maps to see if meta is identical
compareMeta1 := make(map[string]string)
for k, v := range oi1.UserDefined {
var found bool
for _, prefix := range compareKeys {
if !strings.HasPrefix(strings.ToLower(k), strings.ToLower(prefix)) {
continue
}
found = true
break
}
if found {
compareMeta1[strings.ToLower(k)] = v
}
}
compareMeta2 := make(map[string]string)
for k, v := range oi2.Metadata {
var found bool
for _, prefix := range compareKeys {
if !strings.HasPrefix(strings.ToLower(k), strings.ToLower(prefix)) {
continue
}
found = true
break
}
if found {
compareMeta2[strings.ToLower(k)] = strings.Join(v, ",")
}
}
if !reflect.DeepEqual(compareMeta1, compareMeta2) {
return replicateMetadata
}
return replicateNone
}
// replicateObject replicates the specified version of the object to destination bucket
// The source object is then updated to reflect the replication status.
func replicateObject(ctx context.Context, ri ReplicateObjectInfo, objectAPI ObjectLayer, trigger string) {
var replicationStatus replication.StatusType
defer func() {
if replicationStatus.Empty() {
// replication status is empty means
// replication was not attempted for some
// reason, notify the state of the object
// on disk.
replicationStatus = ri.ReplicationStatus
}
auditLogInternal(ctx, ri.Bucket, ri.Name, AuditLogOptions{
Trigger: trigger,
APIName: ReplicateObjectAPI,
VersionID: ri.VersionID,
Status: replicationStatus.String(),
})
}()
objInfo := ri.ObjectInfo
bucket := objInfo.Bucket
object := objInfo.Name
cfg, err := getReplicationConfig(ctx, bucket)
if err != nil {
logger.LogIf(ctx, err)
sendEvent(eventArgs{
EventName: event.ObjectReplicationNotTracked,
BucketName: bucket,
Object: objInfo,
Host: "Internal: [Replication]",
})
return
}
tgtArns := cfg.FilterTargetArns(replication.ObjectOpts{
Name: object,
SSEC: crypto.SSEC.IsEncrypted(objInfo.UserDefined),
})
// Lock the object name before starting replication.
// Use separate lock that doesn't collide with regular objects.
lk := objectAPI.NewNSLock(bucket, "/[replicate]/"+object)
lkctx, err := lk.GetLock(ctx, globalOperationTimeout)
if err != nil {
sendEvent(eventArgs{
EventName: event.ObjectReplicationNotTracked,
BucketName: bucket,
Object: objInfo,
Host: "Internal: [Replication]",
})
logger.LogIf(ctx, fmt.Errorf("failed to get lock for object: %s bucket:%s arn:%s", object, bucket, cfg.RoleArn))
return
}
ctx = lkctx.Context()
defer lk.Unlock(lkctx.Cancel)
var wg sync.WaitGroup
var rinfos replicatedInfos
rinfos.Targets = make([]replicatedTargetInfo, len(tgtArns))
for i, tgtArn := range tgtArns {
tgt := globalBucketTargetSys.GetRemoteTargetClient(ctx, tgtArn)
if tgt == nil {
logger.LogIf(ctx, fmt.Errorf("failed to get target for bucket:%s arn:%s", bucket, tgtArn))
sendEvent(eventArgs{
EventName: event.ObjectReplicationNotTracked,
BucketName: bucket,
Object: objInfo,
Host: "Internal: [Replication]",
})
continue
}
wg.Add(1)
go func(index int, tgt *TargetClient) {
defer wg.Done()
rinfos.Targets[index] = replicateObjectToTarget(ctx, ri, objectAPI, tgt)
}(i, tgt)
}
wg.Wait()
// FIXME: add support for missing replication events
// - event.ObjectReplicationMissedThreshold
// - event.ObjectReplicationReplicatedAfterThreshold
var eventName = event.ObjectReplicationComplete
if rinfos.ReplicationStatus() == replication.Failed {
eventName = event.ObjectReplicationFailed
}
newReplStatusInternal := rinfos.ReplicationStatusInternal()
// Note that internal replication status(es) may match for previously replicated objects - in such cases
// metadata should be updated with last resync timestamp.
if objInfo.ReplicationStatusInternal != newReplStatusInternal || rinfos.ReplicationResynced() {
popts := ObjectOptions{
MTime: objInfo.ModTime,
VersionID: objInfo.VersionID,
EvalMetadataFn: func(oi ObjectInfo) error {
oi.UserDefined[ReservedMetadataPrefixLower+ReplicationStatus] = newReplStatusInternal
oi.UserDefined[ReservedMetadataPrefixLower+ReplicationTimestamp] = UTCNow().Format(time.RFC3339Nano)
oi.UserDefined[xhttp.AmzBucketReplicationStatus] = string(rinfos.ReplicationStatus())
for _, rinfo := range rinfos.Targets {
if rinfo.ResyncTimestamp != "" {
oi.UserDefined[targetResetHeader(rinfo.Arn)] = rinfo.ResyncTimestamp
}
}
if objInfo.UserTags != "" {
oi.UserDefined[xhttp.AmzObjectTagging] = objInfo.UserTags
}
return nil
},
}
if _, err = objectAPI.PutObjectMetadata(ctx, bucket, object, popts); err != nil {
logger.LogIf(ctx, fmt.Errorf("Unable to update replication metadata for %s/%s(%s): %w",
bucket, objInfo.Name, objInfo.VersionID, err))
}
opType := replication.MetadataReplicationType
if rinfos.Action() == replicateAll {
opType = replication.ObjectReplicationType
}
for _, rinfo := range rinfos.Targets {
if rinfo.ReplicationStatus != rinfo.PrevReplicationStatus {
globalReplicationStats.Update(bucket, rinfo.Arn, rinfo.Size, rinfo.ReplicationStatus, rinfo.PrevReplicationStatus, opType)
}
}
}
sendEvent(eventArgs{
EventName: eventName,
BucketName: bucket,
Object: objInfo,
Host: "Internal: [Replication]",
})
// re-queue failures once more - keep a retry count to avoid flooding the queue if
// the target site is down. Leave it to scanner to catch up instead.
if rinfos.ReplicationStatus() != replication.Completed && ri.RetryCount < 1 {
ri.OpType = replication.HealReplicationType
ri.ReplicationStatusInternal = rinfos.ReplicationStatusInternal()
ri.RetryCount++
globalReplicationPool.queueReplicaFailedTask(ri)
}
}
// replicateObjectToTarget replicates the specified version of the object to destination bucket
// The source object is then updated to reflect the replication status.
func replicateObjectToTarget(ctx context.Context, ri ReplicateObjectInfo, objectAPI ObjectLayer, tgt *TargetClient) (rinfo replicatedTargetInfo) {
objInfo := ri.ObjectInfo.Clone()
bucket := objInfo.Bucket
object := objInfo.Name
var (
closeOnDefer bool
gr *GetObjectReader
size int64
err error
)
sz, _ := objInfo.GetActualSize()
// set defaults for replication action based on operation being performed - actual
// replication action can only be determined after stat on remote. This default is
// needed for updating replication metrics correctly when target is offline.
var rAction replicationAction
switch ri.OpType {
case replication.MetadataReplicationType:
rAction = replicateMetadata
default:
rAction = replicateAll
}
rinfo = replicatedTargetInfo{
Size: sz,
Arn: tgt.ARN,
PrevReplicationStatus: objInfo.TargetReplicationStatus(tgt.ARN),
ReplicationStatus: replication.Failed,
OpType: ri.OpType,
ReplicationAction: rAction,
}
if ri.ObjectInfo.TargetReplicationStatus(tgt.ARN) == replication.Completed && !ri.ExistingObjResync.Empty() && !ri.ExistingObjResync.mustResyncTarget(tgt.ARN) {
rinfo.ReplicationStatus = replication.Completed
rinfo.ReplicationResynced = true
return
}
if tgt.IsOffline() {
logger.LogIf(ctx, fmt.Errorf("remote target is offline for bucket:%s arn:%s", bucket, tgt.ARN))