[Filer] post add param:saveInside (#4434)

* fix:mount deadlock

* feat: filer http upload to metadata

* feat: /etc save inside

---------

Co-authored-by: zemul <zhouzemiao@ihuman.com>

weed/operation/assign_file_id.go

@@ -137,6 +137,7 @@ type StorageOption struct {
 	TtlSeconds        int32
 	Fsync             bool
 	VolumeGrowthCount uint32
+	SaveInside        bool
 }
 
 func (so *StorageOption) TtlString() string {

weed/server/filer_server_handlers_write.go

@@ -87,6 +87,7 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request, conte
 		query.Get("dataCenter"),
 		query.Get("rack"),
 		query.Get("dataNode"),
+		query.Get("saveInside"),
 	)
 	if err != nil {
 		if err == ErrReadOnly {
@@ -103,6 +104,10 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request, conte
 		so.DiskType = fs.option.DiskType
 	}
 
+	if strings.HasPrefix(r.URL.Path, "/etc") {
+		so.SaveInside = true
+	}
+
 	if query.Has("mv.from") {
 		fs.move(ctx, w, r, so)
 	} else {
@@ -246,7 +251,7 @@ func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication
 	}, nil
 }
 
-func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, diskType string, fsync string, dataCenter, rack, dataNode string) (*operation.StorageOption, error) {
+func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, diskType string, fsync string, dataCenter, rack, dataNode, saveInside string) (*operation.StorageOption, error) {
 
 	ttl, err := needle.ReadTTL(qTtl)
 	if err != nil {
@@ -260,6 +265,11 @@ func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplicatio
 		} else if fsync == "true" {
 			so.Fsync = true
 		}
+		if saveInside == "true" {
+			so.SaveInside = true
+		} else {
+			so.SaveInside = false
+		}
 	}
 
 	return so, err

weed/server/filer_server_handlers_write_autochunk.go

@@ -1,6 +1,7 @@
 package weed_server
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 	//"github.com/seaweedfs/seaweedfs/weed/s3api"
@@ -64,7 +65,6 @@ func (fs *FilerServer) autoChunk(ctx context.Context, w http.ResponseWriter, r *
 }
 
 func (fs *FilerServer) doPostAutoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request, chunkSize int32, contentLength int64, so *operation.StorageOption) (filerResult *FilerPostResult, md5bytes []byte, replyerr error) {
-
 	multipartReader, multipartReaderErr := r.MultipartReader()
 	if multipartReaderErr != nil {
 		return nil, nil, multipartReaderErr
@@ -84,6 +84,15 @@ func (fs *FilerServer) doPostAutoChunk(ctx context.Context, w http.ResponseWrite
 		contentType = ""
 	}
 
+	if so.SaveInside {
+		buf := bufPool.Get().(*bytes.Buffer)
+		buf.Reset()
+		buf.ReadFrom(part1)
+		filerResult, replyerr = fs.saveMetaData(ctx, r, fileName, contentType, so, nil, nil, 0, buf.Bytes())
+		bufPool.Put(buf)
+		return
+	}
+
 	fileChunks, md5Hash, chunkOffset, err, smallContent := fs.uploadReaderToChunks(w, r, part1, chunkSize, fileName, contentType, contentLength, so)
 	if err != nil {
 		return nil, nil, err