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30a3921d3e
- Adds versioning support for S3 based remote tiers that have versioning enabled. This ensures that when reading or deleting we specify the specific version ID of the object. In case of deletion, this is important to ensure that the object version is actually deleted instead of simply being marked for deletion. - Stores the remote object's version id in the tier-journal. Tier-journal file version is not bumped up as serializing the new struct version is compatible with old journals without the remote object version id. - `storageRESTVersion` is bumped up as FileInfo struct now includes a `TransitionRemoteVersionID` member. - Azure and GCS support for this feature will be added subsequently. Co-authored-by: Krishnan Parthasarathi <krisis@users.noreply.github.com>
134 lines
3.9 KiB
Go
134 lines
3.9 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"fmt"
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"io"
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"net/url"
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"strings"
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"time"
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"github.com/minio/madmin-go"
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minio "github.com/minio/minio-go/v7"
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miniogo "github.com/minio/minio-go/v7"
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"github.com/minio/minio-go/v7/pkg/credentials"
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)
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type warmBackendS3 struct {
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client *minio.Client
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core *minio.Core
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Bucket string
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Prefix string
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StorageClass string
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}
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func (s3 *warmBackendS3) ToObjectError(err error, params ...string) error {
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object := ""
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if len(params) >= 1 {
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object = params[0]
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}
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return ErrorRespToObjectError(err, s3.Bucket, s3.getDest(object))
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}
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func (s3 *warmBackendS3) getDest(object string) string {
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destObj := object
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if s3.Prefix != "" {
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destObj = fmt.Sprintf("%s/%s", s3.Prefix, object)
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}
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return destObj
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}
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func (s3 *warmBackendS3) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
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res, err := s3.client.PutObject(ctx, s3.Bucket, s3.getDest(object), r, length, minio.PutObjectOptions{StorageClass: s3.StorageClass})
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return remoteVersionID(res.VersionID), s3.ToObjectError(err, object)
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}
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func (s3 *warmBackendS3) Get(ctx context.Context, object string, rv remoteVersionID, opts WarmBackendGetOpts) (io.ReadCloser, error) {
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gopts := minio.GetObjectOptions{}
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if rv != "" {
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gopts.VersionID = string(rv)
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}
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if opts.startOffset >= 0 && opts.length > 0 {
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if err := gopts.SetRange(opts.startOffset, opts.startOffset+opts.length-1); err != nil {
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return nil, s3.ToObjectError(err, object)
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}
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}
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c := &miniogo.Core{Client: s3.client}
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// Important to use core primitives here to pass range get options as is.
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r, _, _, err := c.GetObject(ctx, s3.Bucket, s3.getDest(object), gopts)
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if err != nil {
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return nil, s3.ToObjectError(err, object)
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}
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return r, nil
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}
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func (s3 *warmBackendS3) Remove(ctx context.Context, object string, rv remoteVersionID) error {
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ropts := minio.RemoveObjectOptions{}
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if rv != "" {
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ropts.VersionID = string(rv)
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}
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err := s3.client.RemoveObject(ctx, s3.Bucket, s3.getDest(object), ropts)
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return s3.ToObjectError(err, object)
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}
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func (s3 *warmBackendS3) InUse(ctx context.Context) (bool, error) {
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result, err := s3.core.ListObjectsV2(s3.Bucket, s3.Prefix, "", false, "/", 1)
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if err != nil {
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return false, s3.ToObjectError(err)
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}
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if len(result.CommonPrefixes) > 0 || len(result.Contents) > 0 {
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return true, nil
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}
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return false, nil
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}
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func newWarmBackendS3(conf madmin.TierS3) (*warmBackendS3, error) {
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u, err := url.Parse(conf.Endpoint)
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if err != nil {
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return nil, err
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}
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creds := credentials.NewStaticV4(conf.AccessKey, conf.SecretKey, "")
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getRemoteTargetInstanceTransportOnce.Do(func() {
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getRemoteTargetInstanceTransport = newGatewayHTTPTransport(10 * time.Minute)
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})
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opts := &minio.Options{
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Creds: creds,
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Secure: u.Scheme == "https",
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Transport: getRemoteTargetInstanceTransport,
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}
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client, err := minio.New(u.Host, opts)
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if err != nil {
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return nil, err
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}
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core, err := minio.NewCore(u.Host, opts)
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if err != nil {
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return nil, err
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}
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return &warmBackendS3{
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client: client,
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core: core,
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Bucket: conf.Bucket,
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Prefix: strings.TrimSuffix(conf.Prefix, slashSeparator),
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StorageClass: conf.StorageClass,
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}, nil
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}
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