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We return etag using the same algorithm as aws s3

Browse source 
https://teppen.io/2018/06/23/aws_s3_etags/
This commit is contained in:
Konstantin Lebedev 2020-10-05 14:43:32 +05:00
parent 4fc673341f
commit e4f2d9eb4a
2 changed files with 9 additions and 6 deletions
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12
weed/filer/filechunks.go
View file

@ -1,13 +1,15 @@
package filer
import (
"bytes"
"encoding/hex"
"fmt"
"hash/fnv"
"math"
"sort"
"sync"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func TotalSize(chunks []*filer_pb.FileChunk) (size uint64) {
@ -42,12 +44,12 @@ func ETagChunks(chunks []*filer_pb.FileChunk) (etag string) {
if len(chunks) == 1 {
return chunks[0].ETag
}
h := fnv.New32a()
md5_digests := [][]byte{}
for _, c := range chunks {
h.Write([]byte(c.ETag))
md5_decoded, _ := hex.DecodeString(c.ETag)
md5_digests = append(md5_digests, md5_decoded)
}
return fmt.Sprintf("%x", h.Sum32())
return fmt.Sprintf("%x-%d", util.Md5(bytes.Join(md5_digests, nil)), len(chunks))
}
func CompactFileChunks(lookupFileIdFn LookupFileIdFunctionType, chunks []*filer_pb.FileChunk) (compacted, garbage []*filer_pb.FileChunk) {

3
weed/server/volume_server_handlers_write.go
View file

@ -13,6 +13,7 @@ import (
"github.com/chrislusf/seaweedfs/weed/stats"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/topology"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (vs *VolumeServer) PostHandler(w http.ResponseWriter, r *http.Request) {
@ -67,7 +68,7 @@ func (vs *VolumeServer) PostHandler(w http.ResponseWriter, r *http.Request) {
ret.Name = string(reqNeedle.Name)
}
ret.Size = uint32(originalSize)
ret.ETag = reqNeedle.Etag()
ret.ETag = fmt.Sprintf("%x", util.Base64Md5ToBytes(contentMd5))
ret.Mime = string(reqNeedle.Mime)
setEtag(w, ret.ETag)
w.Header().Set("Content-MD5", contentMd5)