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[#263] Add LWW to system objects

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Signed-off-by: Denis Kirillov <denis@nspcc.ru>
This commit is contained in:
Denis Kirillov 2021-09-21 16:08:06 +03:00 • committed by Alex Vanin
parent d616d9e2d9
commit 3231ecab03
4 changed files with 221 additions and 64 deletions
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81
api/layer/object.go
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@ -2,7 +2,6 @@ package layer
import (
"context"
"errors"
"io"
"net/url"
"sort"
@ -92,20 +91,6 @@ func (n *layer) objectSearch(ctx context.Context, p *findParams) ([]*object.ID,
return n.pool.SearchObject(ctx, new(client.SearchObjectParams).WithContainerID(p.cid).WithSearchFilters(opts), n.BearerOpt(ctx))
}
// objectFindID returns object id (uuid) based on it's nice name in s3. If
// nice name is uuid compatible, then function returns it.
func (n *layer) objectFindID(ctx context.Context, p *findParams) (*object.ID, error) {
if result, err := n.objectSearch(ctx, p); err != nil {
return nil, err
} else if ln := len(result); ln == 0 {
return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchKey)
} else if ln == 1 {
return result[0], nil
}
return nil, errors.New("several objects with the same name found")
}
func newAddress(cid *cid.ID, oid *object.ID) *object.Address {
address := object.NewAddress()
address.SetContainerID(cid)
@ -147,7 +132,7 @@ func (n *layer) objectPut(ctx context.Context, bkt *data.BucketInfo, p *PutObjec
if err != nil && !apiErrors.IsS3Error(err, apiErrors.ErrNoSuchKey) {
return nil, err
}
idsToDeleteArr := updateCRDT2PSetHeaders(p, versions, versioningEnabled)
idsToDeleteArr := updateCRDT2PSetHeaders(p.Header, versions, versioningEnabled)
r := p.Reader
if len(p.Header[api.ContentType]) == 0 {
@ -243,27 +228,27 @@ func formRawObject(p *PutObjectParams, bktID *cid.ID, own *owner.ID, obj string)
return raw
}
func updateCRDT2PSetHeaders(p *PutObjectParams, versions *objectVersions, versioningEnabled bool) []*object.ID {
func updateCRDT2PSetHeaders(header map[string]string, versions *objectVersions, versioningEnabled bool) []*object.ID {
var idsToDeleteArr []*object.ID
if versions == nil {
if versions.isEmpty() {
return idsToDeleteArr
}
if versioningEnabled {
if !versions.isAddListEmpty() {
p.Header[versionsAddAttr] = versions.getAddHeader()
header[versionsAddAttr] = versions.getAddHeader()
}
deleted := versions.getDelHeader()
// p.Header[versionsDelAttr] can be not empty when deleting specific version
if delAttr := p.Header[versionsDelAttr]; len(delAttr) != 0 {
// header[versionsDelAttr] can be not empty when deleting specific version
if delAttr := header[versionsDelAttr]; len(delAttr) != 0 {
if len(deleted) != 0 {
p.Header[versionsDelAttr] = deleted + "," + delAttr
header[versionsDelAttr] = deleted + "," + delAttr
} else {
p.Header[versionsDelAttr] = delAttr
header[versionsDelAttr] = delAttr
}
} else if len(deleted) != 0 {
p.Header[versionsDelAttr] = deleted
header[versionsDelAttr] = deleted
}
} else {
versionsDeletedStr := versions.getDelHeader()
@ -272,10 +257,10 @@ func updateCRDT2PSetHeaders(p *PutObjectParams, versions *objectVersions, versio
}
if lastVersion := versions.getLast(); lastVersion != nil {
p.Header[versionsDelAttr] = versionsDeletedStr + lastVersion.Version()
header[versionsDelAttr] = versionsDeletedStr + lastVersion.Version()
idsToDeleteArr = append(idsToDeleteArr, lastVersion.ID)
} else if len(versionsDeletedStr) != 0 {
p.Header[versionsDelAttr] = versionsDeletedStr
header[versionsDelAttr] = versionsDeletedStr
}
for _, version := range versions.objects {
@ -352,6 +337,50 @@ func (n *layer) headVersions(ctx context.Context, bkt *data.BucketInfo, objectNa
return versions, nil
}
func (n *layer) headSystemVersions(ctx context.Context, bkt *data.BucketInfo, sysName string) (*objectVersions, error) {
ids, err := n.objectSearch(ctx, &findParams{cid: bkt.CID, attr: objectSystemAttributeName, val: sysName})
if err != nil {
return nil, err
}
// should be changed when system cache will store payload instead of meta
metas := make(map[string]*object.Object, len(ids))
versions := newObjectVersions(sysName)
for _, id := range ids {
meta, err := n.objectHead(ctx, bkt.CID, id)
if err != nil {
n.log.Warn("couldn't head object",
zap.Stringer("object id", id),
zap.Stringer("bucket id", bkt.CID),
zap.Error(err))
continue
}
if oi := objectInfoFromMeta(bkt, meta, "", ""); oi != nil {
if !isSystem(oi) {
continue
}
versions.appendVersion(oi)
metas[oi.Version()] = meta
}
}
lastVersion := versions.getLast()
if lastVersion == nil {
return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchKey)
}
if err = n.systemCache.Put(bkt.SystemObjectKey(sysName), metas[lastVersion.Version()]); err != nil {
n.log.Warn("couldn't put system meta to objects cache",
zap.Stringer("object id", lastVersion.ID),
zap.Stringer("bucket id", bkt.CID),
zap.Error(err))
}
return versions, nil
}
func (n *layer) headVersion(ctx context.Context, bkt *data.BucketInfo, versionID string) (*data.ObjectInfo, error) {
oid := object.NewID()
if err := oid.Parse(versionID); err != nil {