- 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>
192 lines
5.8 KiB
Go
192 lines
5.8 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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"encoding/base64"
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"strings"
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"github.com/Azure/azure-storage-blob-go/azblob"
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"github.com/minio/madmin-go"
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)
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type warmBackendAzure struct {
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serviceURL azblob.ServiceURL
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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 (az *warmBackendAzure) getDest(object string) string {
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destObj := object
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if az.Prefix != "" {
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destObj = fmt.Sprintf("%s/%s", az.Prefix, object)
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}
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return destObj
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}
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func (az *warmBackendAzure) tier() azblob.AccessTierType {
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for _, t := range azblob.PossibleAccessTierTypeValues() {
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if strings.ToLower(az.StorageClass) == strings.ToLower(string(t)) {
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return t
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}
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}
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return azblob.AccessTierType("")
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}
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// FIXME: add support for remote version ID in Azure remote tier and remove
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// this. Currently it's a no-op.
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func (az *warmBackendAzure) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {
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blobURL := az.serviceURL.NewContainerURL(az.Bucket).NewBlockBlobURL(az.getDest(object))
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// set tier if specified -
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if az.StorageClass != "" {
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if _, err := blobURL.SetTier(ctx, az.tier(), azblob.LeaseAccessConditions{}); err != nil {
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return "", azureToObjectError(err, az.Bucket, object)
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}
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}
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res, err := azblob.UploadStreamToBlockBlob(ctx, r, blobURL, azblob.UploadStreamToBlockBlobOptions{})
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return remoteVersionID(res.Version()), azureToObjectError(err, az.Bucket, object)
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}
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func (az *warmBackendAzure) Get(ctx context.Context, object string, rv remoteVersionID, opts WarmBackendGetOpts) (r io.ReadCloser, err error) {
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if opts.startOffset < 0 {
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return nil, InvalidRange{}
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}
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blobURL := az.serviceURL.NewContainerURL(az.Bucket).NewBlobURL(az.getDest(object))
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blob, err := blobURL.Download(ctx, opts.startOffset, opts.length, azblob.BlobAccessConditions{}, false)
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if err != nil {
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return nil, azureToObjectError(err, az.Bucket, object)
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}
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rc := blob.Body(azblob.RetryReaderOptions{})
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return rc, nil
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}
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func (az *warmBackendAzure) Remove(ctx context.Context, object string, rv remoteVersionID) error {
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blob := az.serviceURL.NewContainerURL(az.Bucket).NewBlobURL(az.getDest(object))
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_, err := blob.Delete(ctx, azblob.DeleteSnapshotsOptionNone, azblob.BlobAccessConditions{})
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return azureToObjectError(err, az.Bucket, object)
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}
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func (az *warmBackendAzure) InUse(ctx context.Context) (bool, error) {
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containerURL := az.serviceURL.NewContainerURL(az.Bucket)
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resp, err := containerURL.ListBlobsHierarchySegment(ctx, azblob.Marker{}, "/", azblob.ListBlobsSegmentOptions{
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Prefix: az.Prefix,
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MaxResults: int32(1),
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})
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if err != nil {
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return false, azureToObjectError(err, az.Bucket, az.Prefix)
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}
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if len(resp.Segment.BlobPrefixes) > 0 || len(resp.Segment.BlobItems) > 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 newWarmBackendAzure(conf madmin.TierAzure) (*warmBackendAzure, error) {
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credential, err := azblob.NewSharedKeyCredential(conf.AccountName, conf.AccountKey)
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if err != nil {
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if _, ok := err.(base64.CorruptInputError); ok {
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return nil, errors.New("invalid Azure credentials")
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}
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return nil, err
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}
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p := azblob.NewPipeline(credential, azblob.PipelineOptions{})
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u, err := url.Parse(fmt.Sprintf("https://%s.blob.core.windows.net", conf.AccountName))
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if err != nil {
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return nil, err
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}
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serviceURL := azblob.NewServiceURL(*u, p)
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return &warmBackendAzure{
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serviceURL: serviceURL,
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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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// Convert azure errors to minio object layer errors.
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func azureToObjectError(err error, params ...string) error {
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if err == nil {
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return nil
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}
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bucket := ""
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object := ""
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if len(params) >= 1 {
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bucket = params[0]
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}
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if len(params) == 2 {
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object = params[1]
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}
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azureErr, ok := err.(azblob.StorageError)
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if !ok {
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// We don't interpret non Azure errors. As azure errors will
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// have StatusCode to help to convert to object errors.
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return err
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}
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serviceCode := string(azureErr.ServiceCode())
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statusCode := azureErr.Response().StatusCode
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return azureCodesToObjectError(err, serviceCode, statusCode, bucket, object)
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}
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func azureCodesToObjectError(err error, serviceCode string, statusCode int, bucket string, object string) error {
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switch serviceCode {
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case "ContainerNotFound", "ContainerBeingDeleted":
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err = BucketNotFound{Bucket: bucket}
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case "ContainerAlreadyExists":
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err = BucketExists{Bucket: bucket}
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case "InvalidResourceName":
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err = BucketNameInvalid{Bucket: bucket}
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case "RequestBodyTooLarge":
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err = PartTooBig{}
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case "InvalidMetadata":
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err = UnsupportedMetadata{}
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case "BlobAccessTierNotSupportedForAccountType":
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err = NotImplemented{}
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case "OutOfRangeInput":
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err = ObjectNameInvalid{
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Bucket: bucket,
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Object: object,
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}
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default:
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switch statusCode {
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case http.StatusNotFound:
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if object != "" {
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err = ObjectNotFound{
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Bucket: bucket,
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Object: object,
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}
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} else {
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err = BucketNotFound{Bucket: bucket}
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}
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case http.StatusBadRequest:
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err = BucketNameInvalid{Bucket: bucket}
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}
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}
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return err
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}
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