[s3] fix s3 test_multipart_get_part (#5476)

* try fix s3  test_multipart_get_part

* add passed s3 tests

* fix SeaweedFSUploadId

* rm spaces

* convert part request to range

* add passed s3 tests of multipart

5 files changed, 43 insertions, 8 deletions

diff --git a/weed/s3api/filer_multipart.go b/weed/s3api/filer_multipart.go
index e9cd6a0c4..43f982897 100644
--- a/weed/s3api/filer_multipart.go
+++ b/weed/s3api/filer_multipart.go
@@ -103,7 +103,7 @@ func (s3a *S3ApiServer) completeMultipartUpload(input *s3.CompleteMultipartUploa
 	if len(entries) == 0 {
 		entryName, dirName := s3a.getEntryNameAndDir(input)
 		if entry, _ := s3a.getEntry(dirName, entryName); entry != nil && entry.Extended != nil {
-			if uploadId, ok := entry.Extended[s3_constants.X_SeaweedFS_Header_Upload_Id]; ok && *input.UploadId == string(uploadId) {
+			if uploadId, ok := entry.Extended[s3_constants.SeaweedFSUploadId]; ok && *input.UploadId == string(uploadId) {
 				return &CompleteMultipartUploadResult{
 					CompleteMultipartUploadOutput: s3.CompleteMultipartUploadOutput{
 						Location: aws.String(fmt.Sprintf("http://%s%s/%s", s3a.option.Filer.ToHttpAddress(), urlEscapeObject(dirName), urlPathEscape(entryName))),
@@ -222,7 +222,7 @@ func (s3a *S3ApiServer) completeMultipartUpload(input *s3.CompleteMultipartUploa
 		if entry.Extended == nil {
 			entry.Extended = make(map[string][]byte)
 		}
-		entry.Extended[s3_constants.X_SeaweedFS_Header_Upload_Id] = []byte(*input.UploadId)
+		entry.Extended[s3_constants.SeaweedFSUploadId] = []byte(*input.UploadId)
 		for k, v := range pentry.Extended {
 			if k != "key" {
 				entry.Extended[k] = v
diff --git a/weed/s3api/s3_constants/header.go b/weed/s3api/s3_constants/header.go
index 8e4a2f8c7..765b2a0f1 100644
--- a/weed/s3api/s3_constants/header.go
+++ b/weed/s3api/s3_constants/header.go
@@ -38,8 +38,9 @@ const (
 	AmzObjectTaggingDirective = "X-Amz-Tagging-Directive"
 	AmzTagCount               = "x-amz-tagging-count"
 
-	X_SeaweedFS_Header_Directory_Key = "x-seaweedfs-is-directory-key"
-	X_SeaweedFS_Header_Upload_Id     = "X-Seaweedfs-Upload-Id"
+	SeaweedFSIsDirectoryKey = "X-Seaweedfs-Is-Directory-Key"
+	SeaweedFSPartNumber     = "X-Seaweedfs-Part-Number"
+	SeaweedFSUploadId       = "X-Seaweedfs-Upload-Id"
 
 	// S3 ACL headers
 	AmzCannedAcl      = "X-Amz-Acl"
@@ -48,6 +49,8 @@ const (
 	AmzAclWrite       = "X-Amz-Grant-Write"
 	AmzAclReadAcp     = "X-Amz-Grant-Read-Acp"
 	AmzAclWriteAcp    = "X-Amz-Grant-Write-Acp"
+
+	AmzMpPartsCount = "X-Amz-Mp-Parts-Count"
 )
 
 // Non-Standard S3 HTTP request constants
diff --git a/weed/s3api/s3api_object_handlers.go b/weed/s3api/s3api_object_handlers.go
index f32dcefeb..dd3a16bf8 100644
--- a/weed/s3api/s3api_object_handlers.go
+++ b/weed/s3api/s3api_object_handlers.go
@@ -370,6 +370,9 @@ func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, des
 		if _, ok := s3_constants.PassThroughHeaders[strings.ToLower(k)]; ok {
 			proxyReq.Header[k] = v
 		}
+		if k == "partNumber" {
+			proxyReq.Header[s3_constants.SeaweedFSPartNumber] = v
+		}
 	}
 	for header, values := range r.Header {
 		proxyReq.Header[header] = values
@@ -411,7 +414,7 @@ func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, des
 	}
 
 	TimeToFirstByte(r.Method, start, r)
-	if resp.Header.Get(s3_constants.X_SeaweedFS_Header_Directory_Key) == "true" {
+	if resp.Header.Get(s3_constants.SeaweedFSIsDirectoryKey) == "true" {
 		responseStatusCode := responseFn(resp, w)
 		s3err.PostLog(r, responseStatusCode, s3err.ErrNone)
 		return
@@ -429,6 +432,18 @@ func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, des
 		return
 	}
 
+	if resp.StatusCode == http.StatusBadRequest {
+		resp_body, _ := io.ReadAll(resp.Body)
+		switch string(resp_body) {
+		case "InvalidPart":
+			s3err.WriteErrorResponse(w, r, s3err.ErrInvalidPart)
+		default:
+			s3err.WriteErrorResponse(w, r, s3err.ErrInvalidRequest)
+		}
+		resp.Body.Close()
+		return
+	}
+
 	setUserMetadataKeyToLowercase(resp)
 
 	responseStatusCode := responseFn(resp, w)
diff --git a/weed/server/filer_server_handlers_read.go b/weed/server/filer_server_handlers_read.go
index 83411051d..123b7a494 100644
--- a/weed/server/filer_server_handlers_read.go
+++ b/weed/server/filer_server_handlers_read.go
@@ -3,6 +3,8 @@ package weed_server
 import (
 	"bytes"
 	"context"
+	"encoding/base64"
+	"encoding/hex"
 	"errors"
 	"fmt"
 	"io"
@@ -132,7 +134,7 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 			return
 		}
 		// inform S3 API this is a user created directory key object
-		w.Header().Set(s3_constants.X_SeaweedFS_Header_Directory_Key, "true")
+		w.Header().Set(s3_constants.SeaweedFSIsDirectoryKey, "true")
 	}
 
 	if isForDirectory && entry.Attr.Mime != s3_constants.FolderMimeType {
@@ -158,7 +160,22 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	etag := filer.ETagEntry(entry)
+	var etag string
+	if partNumber, errNum := strconv.Atoi(r.Header.Get(s3_constants.SeaweedFSPartNumber)); errNum == nil {
+		if len(entry.Chunks) < partNumber {
+			stats.FilerHandlerCounter.WithLabelValues(stats.ErrorReadChunk).Inc()
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte("InvalidPart"))
+			return
+		}
+		w.Header().Set(s3_constants.AmzMpPartsCount, strconv.Itoa(len(entry.Chunks)))
+		partChunk := entry.GetChunks()[partNumber-1]
+		md5, _ := base64.StdEncoding.DecodeString(partChunk.ETag)
+		etag = hex.EncodeToString(md5)
+		r.Header.Set("Range", fmt.Sprintf("bytes=%d-%d", partChunk.Offset, uint64(partChunk.Offset)+partChunk.Size-1))
+	} else {
+		etag = filer.ETagEntry(entry)
+	}
 	w.Header().Set("Accept-Ranges", "bytes")
 
 	// mime type
@@ -207,7 +224,6 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 
 	filename := entry.Name()
 	adjustPassthroughHeaders(w, r, filename)
-
 	totalSize := int64(entry.Size())
 
 	if r.Method == "HEAD" {
diff --git a/weed/stats/metrics_names.go b/weed/stats/metrics_names.go
index c0a6e99be..15f0ad24f 100644
--- a/weed/stats/metrics_names.go
+++ b/weed/stats/metrics_names.go
@@ -41,6 +41,7 @@ const (
 	ErrorWriteEntry          = "write.entry.failed"
 	RepeatErrorUploadContent = "upload.content.repeat.failed"
 	ErrorChunkAssign         = "chunkAssign.failed"
+	ErrorReadChunk           = "read.chunk.failed"
 	ErrorReadCache           = "read.cache.failed"
 	ErrorReadStream          = "read.stream.failed"