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azure: add stateless gateway support (#4874)

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Previously init multipart upload stores metadata of an object which is
used for complete multipart.  This patch makes azure gateway to store
metadata information of init multipart object in azure in the name of
'minio.sys.tmp/multipart/v1/<UPLOAD-ID>/meta.json' and uses this
information on complete multipart.
This commit is contained in:
Bala FA 2017-09-19 16:08:08 -07:00 committed by Dee Koder
parent fba1669966
commit 70fec0a53f
4 changed files with 234 additions and 155 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

307
cmd/gateway-azure.go
View File

@ -17,13 +17,19 @@
package cmd
import (
"bytes"
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
"strings"
"sync"
"time"
"github.com/Azure/azure-sdk-for-go/storage"
@ -33,6 +39,7 @@ import (
const globalAzureAPIVersion = "2016-05-31"
const azureBlockSize = 100 * humanize.MiByte
const metadataObjectNameTemplate = globalMinioSysTmp + "multipart/v1/%s.%x/azure.json"
// Canonicalize the metadata headers, without this azure-sdk calculates
// incorrect signature. This attempt to canonicalize is to convert
@ -87,38 +94,9 @@ func azureToS3ETag(etag string) string {
return canonicalizeETag(etag) + "-1"
}
// To store metadata during NewMultipartUpload which will be used after
// CompleteMultipartUpload to call SetBlobMetadata.
type azureMultipartMetaInfo struct {
meta map[string]map[string]string
*sync.Mutex
}
// Return metadata map of the multipart object.
func (a *azureMultipartMetaInfo) get(key string) map[string]string {
a.Lock()
defer a.Unlock()
return a.meta[key]
}
// Set metadata map for the multipart object.
func (a *azureMultipartMetaInfo) set(key string, value map[string]string) {
a.Lock()
defer a.Unlock()
a.meta[key] = value
}
// Delete metadata map for the multipart object.
func (a *azureMultipartMetaInfo) del(key string) {
a.Lock()
defer a.Unlock()
delete(a.meta, key)
}
// azureObjects - Implements Object layer for Azure blob storage.
type azureObjects struct {
client storage.BlobStorageClient // Azure sdk client
metaInfo azureMultipartMetaInfo
client storage.BlobStorageClient // Azure sdk client
}
// Convert azure errors to minio object layer errors.
@ -177,6 +155,68 @@ func azureToObjectError(err error, params ...string) error {
return e
}
// mustGetAzureUploadID - returns new upload ID which is hex encoded 8 bytes random value.
func mustGetAzureUploadID() string {
var id [8]byte
n, err := io.ReadFull(rand.Reader, id[:])
if err != nil {
panic(fmt.Errorf("unable to generate upload ID for azure. %s", err))
}
if n != len(id) {
panic(fmt.Errorf("insufficient random data (expected: %d, read: %d)", len(id), n))
}
return fmt.Sprintf("%x", id[:])
}
// checkAzureUploadID - returns error in case of given string is upload ID.
func checkAzureUploadID(uploadID string) (err error) {
if len(uploadID) != 16 {
return traceError(MalformedUploadID{uploadID})
}
if _, err = hex.DecodeString(uploadID); err != nil {
return traceError(MalformedUploadID{uploadID})
}
return nil
}
// Encode partID, subPartNumber, uploadID and md5Hex to blockID.
func azureGetBlockID(partID, subPartNumber int, uploadID, md5Hex string) string {
return base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%05d.%02d.%s.%s", partID, subPartNumber, uploadID, md5Hex)))
}
// Parse blockID into partID, subPartNumber and md5Hex.
func azureParseBlockID(blockID string) (partID, subPartNumber int, uploadID, md5Hex string, err error) {
var blockIDBytes []byte
if blockIDBytes, err = base64.StdEncoding.DecodeString(blockID); err != nil {
return
}
tokens := strings.Split(string(blockIDBytes), ".")
if len(tokens) != 4 {
err = fmt.Errorf("invalid block id '%s'", string(blockIDBytes))
return
}
if partID, err = strconv.Atoi(tokens[0]); err != nil || partID <= 0 {
err = fmt.Errorf("invalid part number in block id '%s'", string(blockIDBytes))
return
}
if subPartNumber, err = strconv.Atoi(tokens[1]); err != nil || subPartNumber <= 0 {
err = fmt.Errorf("invalid sub-part number in block id '%s'", string(blockIDBytes))
return
}
uploadID = tokens[2]
md5Hex = tokens[3]
return
}
// Inits azure blob storage client and returns AzureObjects.
func newAzureLayer(host string) (GatewayLayer, error) {
var err error
@ -200,10 +240,6 @@ func newAzureLayer(host string) (GatewayLayer, error) {
return &azureObjects{
client: c.GetBlobService(),
metaInfo: azureMultipartMetaInfo{
meta: make(map[string]map[string]string),
Mutex: &sync.Mutex{},
},
}, nil
}
@ -286,6 +322,9 @@ func (a *azureObjects) ListObjects(bucket, prefix, marker, delimiter string, max
result.IsTruncated = resp.NextMarker != ""
result.NextMarker = resp.NextMarker
for _, object := range resp.Blobs {
if strings.HasPrefix(object.Name, globalMinioSysTmp) {
continue
}
t, e := time.Parse(time.RFC1123, object.Properties.LastModified)
if e != nil {
continue
@ -300,6 +339,14 @@ func (a *azureObjects) ListObjects(bucket, prefix, marker, delimiter string, max
ContentEncoding: object.Properties.ContentEncoding,
})
}
// Remove minio.sys.tmp prefix.
for i, prefix := range resp.BlobPrefixes {
if prefix == globalMinioSysTmp {
resp.BlobPrefixes = append(resp.BlobPrefixes[:i], resp.BlobPrefixes[i+1:]...)
break
}
}
result.Prefixes = resp.BlobPrefixes
return result, nil
}
@ -321,6 +368,9 @@ func (a *azureObjects) ListObjectsV2(bucket, prefix, continuationToken string, f
result.NextContinuationToken = resp.NextMarker
}
for _, object := range resp.Blobs {
if strings.HasPrefix(object.Name, globalMinioSysTmp) {
continue
}
t, e := time.Parse(time.RFC1123, object.Properties.LastModified)
if e != nil {
continue
@ -335,6 +385,14 @@ func (a *azureObjects) ListObjectsV2(bucket, prefix, continuationToken string, f
ContentEncoding: object.Properties.ContentEncoding,
})
}
// Remove minio.sys.tmp prefix.
for i, prefix := range resp.BlobPrefixes {
if prefix == globalMinioSysTmp {
resp.BlobPrefixes = append(resp.BlobPrefixes[:i], resp.BlobPrefixes[i+1:]...)
break
}
}
result.Prefixes = resp.BlobPrefixes
return result, nil
}
@ -437,38 +495,54 @@ func (a *azureObjects) DeleteObject(bucket, object string) error {
return nil
}
// ListMultipartUploads - Incomplete implementation, for now just return the prefix if it is an incomplete upload.
// FIXME: Full ListMultipartUploads is not supported yet. It is supported just enough to help our client libs to
// support re-uploads. a.client.ListBlobs() can be made to return entries which include uncommitted blobs using
// which we need to filter out the committed blobs to get the list of uncommitted blobs.
// ListMultipartUploads - It's decided not to support List Multipart Uploads, hence returning empty result.
func (a *azureObjects) ListMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (result ListMultipartsInfo, err error) {
result.MaxUploads = maxUploads
result.Prefix = prefix
result.Delimiter = delimiter
meta := a.metaInfo.get(prefix)
if meta == nil {
// In case minio was restarted after NewMultipartUpload and before CompleteMultipartUpload we expect
// the client to do a fresh upload so that any metadata like content-type are sent again in the
// NewMultipartUpload.
return result, nil
}
result.Uploads = []uploadMetadata{{prefix, prefix, UTCNow(), "", nil}}
// It's decided not to support List Multipart Uploads, hence returning empty result.
return result, nil
}
type azureMultipartMetadata struct {
Name string `json:"name"`
Metadata map[string]string `json:"metadata"`
}
func getAzureMetadataObjectName(objectName, uploadID string) string {
return fmt.Sprintf(metadataObjectNameTemplate, uploadID, sha256.Sum256([]byte(objectName)))
}
func (a *azureObjects) checkUploadIDExists(bucketName, objectName, uploadID string) (err error) {
_, err = a.client.GetBlobMetadata(bucketName, getAzureMetadataObjectName(objectName, uploadID))
err = azureToObjectError(traceError(err), bucketName, objectName)
oerr := ObjectNotFound{bucketName, objectName}
if errorCause(err) == oerr {
err = traceError(InvalidUploadID{})
}
return err
}
// NewMultipartUpload - Use Azure equivalent CreateBlockBlob.
func (a *azureObjects) NewMultipartUpload(bucket, object string, metadata map[string]string) (uploadID string, err error) {
// Azure doesn't return a unique upload ID and we use object name in place of it. Azure allows multiple uploads to
// co-exist as long as the user keeps the blocks uploaded (in block blobs) unique amongst concurrent upload attempts.
// Each concurrent client, keeps its own blockID list which it can commit.
uploadID = object
if metadata == nil {
// Store an empty map as a placeholder else ListObjectParts/PutObjectPart will not work properly.
metadata = make(map[string]string)
} else {
metadata = s3ToAzureHeaders(metadata)
}
a.metaInfo.set(uploadID, metadata)
uploadID = mustGetAzureUploadID()
if err = a.checkUploadIDExists(bucket, object, uploadID); err == nil {
return "", traceError(errors.New("Upload ID name collision"))
}
metadataObject := getAzureMetadataObjectName(object, uploadID)
metadata = s3ToAzureHeaders(metadata)
var jsonData []byte
if jsonData, err = json.Marshal(azureMultipartMetadata{Name: object, Metadata: metadata}); err != nil {
return "", traceError(err)
}
err = a.client.CreateBlockBlobFromReader(bucket, metadataObject, uint64(len(jsonData)), bytes.NewBuffer(jsonData), nil)
if err != nil {
return "", azureToObjectError(traceError(err), bucket, metadataObject)
}
return uploadID, nil
}
@ -477,29 +551,14 @@ func (a *azureObjects) CopyObjectPart(srcBucket, srcObject, destBucket, destObje
return info, traceError(NotImplemented{})
}
// Encode partID, subPartNumber and md5Hex to blockID.
func azureGetBlockID(partID, subPartNumber int, md5Hex string) string {
return base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%05d.%02d.%s", partID, subPartNumber, md5Hex)))
}
// Parse blockID into partID, subPartNumber and md5Hex.
func azureParseBlockID(blockID string) (partID, subPartNumber int, md5Hex string, err error) {
var blockIDBytes []byte
if blockIDBytes, err = base64.StdEncoding.DecodeString(blockID); err != nil {
return
}
if _, err = fmt.Sscanf(string(blockIDBytes), "%05d.%02d.%s", &partID, &subPartNumber, &md5Hex); err != nil {
err = fmt.Errorf("invalid block id '%s'", string(blockIDBytes))
}
return
}
// PutObjectPart - Use Azure equivalent PutBlockWithLength.
func (a *azureObjects) PutObjectPart(bucket, object, uploadID string, partID int, data *HashReader) (info PartInfo, err error) {
if meta := a.metaInfo.get(uploadID); meta == nil {
return info, traceError(InvalidUploadID{})
if err = a.checkUploadIDExists(bucket, object, uploadID); err != nil {
return info, err
}
if err = checkAzureUploadID(uploadID); err != nil {
return info, err
}
etag := data.md5Sum
@ -519,7 +578,7 @@ func (a *azureObjects) PutObjectPart(bucket, object, uploadID string, partID int
subPartSize = remainingSize
}
id := azureGetBlockID(partID, subPartNumber, etag)
id := azureGetBlockID(partID, subPartNumber, uploadID, etag)
err = a.client.PutBlockWithLength(bucket, object, id, uint64(subPartSize), io.LimitReader(data, subPartSize), nil)
if err != nil {
return info, azureToObjectError(traceError(err), bucket, object)
@ -540,66 +599,56 @@ func (a *azureObjects) PutObjectPart(bucket, object, uploadID string, partID int
// ListObjectParts - Use Azure equivalent GetBlockList.
func (a *azureObjects) ListObjectParts(bucket, object, uploadID string, partNumberMarker int, maxParts int) (result ListPartsInfo, err error) {
result.Bucket = bucket
result.Object = object
result.UploadID = uploadID
result.MaxParts = maxParts
if meta := a.metaInfo.get(uploadID); meta == nil {
return result, nil
}
resp, err := a.client.GetBlockList(bucket, object, storage.BlockListTypeUncommitted)
if err != nil {
return result, azureToObjectError(traceError(err), bucket, object)
}
tmpMaxParts := 0
partCount := 0 // Used for figuring out IsTruncated.
nextPartNumberMarker := 0
for _, part := range resp.UncommittedBlocks {
if tmpMaxParts == maxParts {
// Also takes care of the case if maxParts = 0
break
}
partCount++
partID, _, md5Hex, err := azureParseBlockID(part.Name)
if err != nil {
return result, err
}
if partID <= partNumberMarker {
continue
}
result.Parts = append(result.Parts, PartInfo{
partID,
UTCNow(),
md5Hex,
part.Size,
})
tmpMaxParts++
nextPartNumberMarker = partID
}
if partCount < len(resp.UncommittedBlocks) {
result.IsTruncated = true
result.NextPartNumberMarker = nextPartNumberMarker
if err = a.checkUploadIDExists(bucket, object, uploadID); err != nil {
return result, err
}
// It's decided not to support List Object Parts, hence returning empty result.
return result, nil
}
// AbortMultipartUpload - Not Implemented.
// There is no corresponding API in azure to abort an incomplete upload. The uncommmitted blocks
// gets deleted after one week.
func (a *azureObjects) AbortMultipartUpload(bucket, object, uploadID string) error {
a.metaInfo.del(uploadID)
return nil
func (a *azureObjects) AbortMultipartUpload(bucket, object, uploadID string) (err error) {
if err = a.checkUploadIDExists(bucket, object, uploadID); err != nil {
return err
}
return a.client.DeleteBlob(bucket, getAzureMetadataObjectName(object, uploadID), nil)
}
// CompleteMultipartUpload - Use Azure equivalent PutBlockList.
func (a *azureObjects) CompleteMultipartUpload(bucket, object, uploadID string, uploadedParts []completePart) (objInfo ObjectInfo, err error) {
meta := a.metaInfo.get(uploadID)
if meta == nil {
return objInfo, traceError(InvalidUploadID{uploadID})
metadataObject := getAzureMetadataObjectName(object, uploadID)
if err = a.checkUploadIDExists(bucket, object, uploadID); err != nil {
return objInfo, err
}
if err = checkAzureUploadID(uploadID); err != nil {
return objInfo, err
}
var metadataReader io.Reader
if metadataReader, err = a.client.GetBlob(bucket, metadataObject); err != nil {
return objInfo, azureToObjectError(traceError(err), bucket, metadataObject)
}
var metadata azureMultipartMetadata
if err = json.NewDecoder(metadataReader).Decode(&metadata); err != nil {
return objInfo, azureToObjectError(traceError(err), bucket, metadataObject)
}
meta := metadata.Metadata
defer func() {
if err != nil {
return
}
derr := a.client.DeleteBlob(bucket, metadataObject, nil)
errorIf(derr, "unable to remove meta data object for upload ID %s", uploadID)
}()
resp, err := a.client.GetBlockList(bucket, object, storage.BlockListTypeUncommitted)
if err != nil {
return objInfo, azureToObjectError(traceError(err), bucket, object)
@ -608,12 +657,13 @@ func (a *azureObjects) CompleteMultipartUpload(bucket, object, uploadID string,
getBlocks := func(partNumber int, etag string) (blocks []storage.Block, size int64, err error) {
for _, part := range resp.UncommittedBlocks {
var partID int
var readUploadID string
var md5Hex string
if partID, _, md5Hex, err = azureParseBlockID(part.Name); err != nil {
if partID, _, readUploadID, md5Hex, err = azureParseBlockID(part.Name); err != nil {
return nil, 0, err
}
if partNumber == partID && etag == md5Hex {
if partNumber == partID && uploadID == readUploadID && etag == md5Hex {
blocks = append(blocks, storage.Block{
ID: part.Name,
Status: storage.BlockStatusUncommitted,
@ -676,7 +726,6 @@ func (a *azureObjects) CompleteMultipartUpload(bucket, object, uploadID string,
return objInfo, azureToObjectError(traceError(err), bucket, object)
}
}
a.metaInfo.del(uploadID)
return a.GetObjectInfo(bucket, object)
}

45
cmd/gateway-azure_test.go
View File

@ -147,14 +147,15 @@ func TestAzureGetBlockID(t *testing.T) {
testCases := []struct {
partID int
subPartNumber int
uploadID string
md5 string
blockID string
}{
{1, 7, "d41d8cd98f00b204e9800998ecf8427e", "MDAwMDEuMDcuZDQxZDhjZDk4ZjAwYjIwNGU5ODAwOTk4ZWNmODQyN2U="},
{2, 19, "a7fb6b7b36ee4ed66b5546fac4690273", "MDAwMDIuMTkuYTdmYjZiN2IzNmVlNGVkNjZiNTU0NmZhYzQ2OTAyNzM="},
{1, 7, "f328c35cad938137", "d41d8cd98f00b204e9800998ecf8427e", "MDAwMDEuMDcuZjMyOGMzNWNhZDkzODEzNy5kNDFkOGNkOThmMDBiMjA0ZTk4MDA5OThlY2Y4NDI3ZQ=="},
{2, 19, "abcdc35cad938137", "a7fb6b7b36ee4ed66b5546fac4690273", "MDAwMDIuMTkuYWJjZGMzNWNhZDkzODEzNy5hN2ZiNmI3YjM2ZWU0ZWQ2NmI1NTQ2ZmFjNDY5MDI3Mw=="},
}
for _, test := range testCases {
blockID := azureGetBlockID(test.partID, test.subPartNumber, test.md5)
blockID := azureGetBlockID(test.partID, test.subPartNumber, test.uploadID, test.md5)
if blockID != test.blockID {
t.Fatalf("%s is not equal to %s", blockID, test.blockID)
}
@ -167,13 +168,14 @@ func TestAzureParseBlockID(t *testing.T) {
blockID string
partID int
subPartNumber int
uploadID string
md5 string
}{
{"MDAwMDEuMDcuZDQxZDhjZDk4ZjAwYjIwNGU5ODAwOTk4ZWNmODQyN2U=", 1, 7, "d41d8cd98f00b204e9800998ecf8427e"},
{"MDAwMDIuMTkuYTdmYjZiN2IzNmVlNGVkNjZiNTU0NmZhYzQ2OTAyNzM=", 2, 19, "a7fb6b7b36ee4ed66b5546fac4690273"},
{"MDAwMDEuMDcuZjMyOGMzNWNhZDkzODEzNy5kNDFkOGNkOThmMDBiMjA0ZTk4MDA5OThlY2Y4NDI3ZQ==", 1, 7, "f328c35cad938137", "d41d8cd98f00b204e9800998ecf8427e"},
{"MDAwMDIuMTkuYWJjZGMzNWNhZDkzODEzNy5hN2ZiNmI3YjM2ZWU0ZWQ2NmI1NTQ2ZmFjNDY5MDI3Mw==", 2, 19, "abcdc35cad938137", "a7fb6b7b36ee4ed66b5546fac4690273"},
}
for _, test := range testCases {
partID, subPartNumber, md5, err := azureParseBlockID(test.blockID)
partID, subPartNumber, uploadID, md5, err := azureParseBlockID(test.blockID)
if err != nil {
t.Fatal(err)
}
@ -183,12 +185,15 @@ func TestAzureParseBlockID(t *testing.T) {
if subPartNumber != test.subPartNumber {
t.Fatalf("%d not equal to %d", subPartNumber, test.subPartNumber)
}
if uploadID != test.uploadID {
t.Fatalf("%s not equal to %s", uploadID, test.uploadID)
}
if md5 != test.md5 {
t.Fatalf("%s not equal to %s", md5, test.md5)
}
}
_, _, _, err := azureParseBlockID("junk")
_, _, _, _, err := azureParseBlockID("junk")
if err == nil {
t.Fatal("Expected azureParseBlockID() to return error")
}
@ -271,3 +276,29 @@ func TestAnonErrToObjectErr(t *testing.T) {
})
}
}
func TestCheckAzureUploadID(t *testing.T) {
invalidUploadIDs := []string{
"123456789abcdefg",
"hello world",
"0x1234567890",
"1234567890abcdef1234567890abcdef",
}
for _, uploadID := range invalidUploadIDs {
if err := checkAzureUploadID(uploadID); err == nil {
t.Fatalf("%s: expected: <error>, got: <nil>", uploadID)
}
}
validUploadIDs := []string{
"1234567890abcdef",
"1122334455667788",
}
for _, uploadID := range validUploadIDs {
if err := checkAzureUploadID(uploadID); err != nil {
t.Fatalf("%s: expected: <nil>, got: %s", uploadID, err)
}
}
}

33
cmd/gateway-gcs.go
View File

@ -40,15 +40,10 @@ import (
)
const (
// gcsMinioSysTmp is used for multiparts. We have "minio.sys.tmp" prefix so that
// listing on the GCS lists this entry in the end. Also in the gateway
// ListObjects we filter out this entry.
gcsMinioSysTmp = "minio.sys.tmp/"
// Path where multipart objects are saved.
// If we change the backend format we will use a different url path like /multipart/v2
// but we will not migrate old data.
gcsMinioMultipartPathV1 = gcsMinioSysTmp + "multipart/v1"
gcsMinioMultipartPathV1 = globalMinioSysTmp + "multipart/v1"
// Multipart meta file.
gcsMinioMultipartMeta = "gcs.json"
@ -290,7 +285,7 @@ func newGCSGateway(projectID string) (GatewayLayer, error) {
// Cleanup old files in minio.sys.tmp of the given bucket.
func (l *gcsGateway) CleanupGCSMinioSysTmpBucket(bucket string) {
it := l.client.Bucket(bucket).Objects(l.ctx, &storage.Query{Prefix: gcsMinioSysTmp, Versions: false})
it := l.client.Bucket(bucket).Objects(l.ctx, &storage.Query{Prefix: globalMinioSysTmp, Versions: false})
for {
attrs, err := it.Next()
if err != nil {
@ -408,7 +403,7 @@ func (l *gcsGateway) DeleteBucket(bucket string) error {
if err != nil {
return gcsToObjectError(traceError(err))
}
if objAttrs.Prefix == gcsMinioSysTmp {
if objAttrs.Prefix == globalMinioSysTmp {
gcsMinioPathFound = true
continue
}
@ -420,7 +415,7 @@ func (l *gcsGateway) DeleteBucket(bucket string) error {
}
if gcsMinioPathFound {
// Remove minio.sys.tmp before deleting the bucket.
itObject = l.client.Bucket(bucket).Objects(l.ctx, &storage.Query{Versions: false, Prefix: gcsMinioSysTmp})
itObject = l.client.Bucket(bucket).Objects(l.ctx, &storage.Query{Versions: false, Prefix: globalMinioSysTmp})
for {
objAttrs, err := itObject.Next()
if err == iterator.Done {
@ -505,7 +500,7 @@ func (l *gcsGateway) ListObjects(bucket string, prefix string, marker string, de
// metadata folder, then just break
// otherwise we've truncated the output
attrs, _ := it.Next()
if attrs != nil && attrs.Prefix == gcsMinioSysTmp {
if attrs != nil && attrs.Prefix == globalMinioSysTmp {
break
}
@ -523,16 +518,16 @@ func (l *gcsGateway) ListObjects(bucket string, prefix string, marker string, de
nextMarker = toGCSPageToken(attrs.Name)
if attrs.Prefix == gcsMinioSysTmp {
if attrs.Prefix == globalMinioSysTmp {
// We don't return our metadata prefix.
continue
}
if !strings.HasPrefix(prefix, gcsMinioSysTmp) {
if !strings.HasPrefix(prefix, globalMinioSysTmp) {
// If client lists outside gcsMinioPath then we filter out gcsMinioPath/* entries.
// But if the client lists inside gcsMinioPath then we return the entries in gcsMinioPath/
// which will be helpful to observe the "directory structure" for debugging purposes.
if strings.HasPrefix(attrs.Prefix, gcsMinioSysTmp) ||
strings.HasPrefix(attrs.Name, gcsMinioSysTmp) {
if strings.HasPrefix(attrs.Prefix, globalMinioSysTmp) ||
strings.HasPrefix(attrs.Name, globalMinioSysTmp) {
continue
}
}
@ -605,16 +600,16 @@ func (l *gcsGateway) ListObjectsV2(bucket, prefix, continuationToken string, fet
return ListObjectsV2Info{}, gcsToObjectError(traceError(err), bucket, prefix)
}
if attrs.Prefix == gcsMinioSysTmp {
if attrs.Prefix == globalMinioSysTmp {
// We don't return our metadata prefix.
continue
}
if !strings.HasPrefix(prefix, gcsMinioSysTmp) {
if !strings.HasPrefix(prefix, globalMinioSysTmp) {
// If client lists outside gcsMinioPath then we filter out gcsMinioPath/* entries.
// But if the client lists inside gcsMinioPath then we return the entries in gcsMinioPath/
// which will be helpful to observe the "directory structure" for debugging purposes.
if strings.HasPrefix(attrs.Prefix, gcsMinioSysTmp) ||
strings.HasPrefix(attrs.Name, gcsMinioSysTmp) {
if strings.HasPrefix(attrs.Prefix, globalMinioSysTmp) ||
strings.HasPrefix(attrs.Name, globalMinioSysTmp) {
continue
}
}
@ -954,7 +949,7 @@ func (l *gcsGateway) CompleteMultipartUpload(bucket string, key string, uploadID
// Returns name of the composed object.
gcsMultipartComposeName := func(uploadID string, composeNumber int) string {
return fmt.Sprintf("%s/tmp/%s/composed-object-%05d", gcsMinioSysTmp, uploadID, composeNumber)
return fmt.Sprintf("%s/tmp/%s/composed-object-%05d", globalMinioSysTmp, uploadID, composeNumber)
}
composeCount := int(math.Ceil(float64(len(parts)) / float64(gcsMaxComponents)))

4
cmd/globals.go
View File

@ -53,6 +53,10 @@ const (
globalMinioModeGatewayAzure = "mode-gateway-azure"
globalMinioModeGatewayS3 = "mode-gateway-s3"
globalMinioModeGatewayGCS = "mode-gateway-gcs"
// globalMinioSysTmp prefix is used in Azure/GCS gateway for save metadata sent by Initialize Multipart Upload API.
globalMinioSysTmp = "minio.sys.tmp/"
// Add new global values here.
)