support read

weed/mount/weedfs_write.go

@@ -0,0 +1,84 @@
+package mount
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath) filer.SaveDataAsChunkFunctionType {
+
+	return func(reader io.Reader, filename string, offset int64) (chunk *filer_pb.FileChunk, collection, replication string, err error) {
+		var fileId, host string
+		var auth security.EncodedJwt
+
+		if err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
+			return util.Retry("assignVolume", func() error {
+				request := &filer_pb.AssignVolumeRequest{
+					Count:       1,
+					Replication: wfs.option.Replication,
+					Collection:  wfs.option.Collection,
+					TtlSec:      wfs.option.TtlSec,
+					DiskType:    string(wfs.option.DiskType),
+					DataCenter:  wfs.option.DataCenter,
+					Path:        string(fullPath),
+				}
+
+				resp, err := client.AssignVolume(context.Background(), request)
+				if err != nil {
+					glog.V(0).Infof("assign volume failure %v: %v", request, err)
+					return err
+				}
+				if resp.Error != "" {
+					return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
+				}
+
+				fileId, auth = resp.FileId, security.EncodedJwt(resp.Auth)
+				loc := resp.Location
+				host = wfs.AdjustedUrl(loc)
+				collection, replication = resp.Collection, resp.Replication
+
+				return nil
+			})
+		}); err != nil {
+			return nil, "", "", fmt.Errorf("filerGrpcAddress assign volume: %v", err)
+		}
+
+		fileUrl := fmt.Sprintf("http://%s/%s", host, fileId)
+		if wfs.option.VolumeServerAccess == "filerProxy" {
+			fileUrl = fmt.Sprintf("http://%s/?proxyChunkId=%s", wfs.getCurrentFiler(), fileId)
+		}
+		uploadOption := &operation.UploadOption{
+			UploadUrl:         fileUrl,
+			Filename:          filename,
+			Cipher:            wfs.option.Cipher,
+			IsInputCompressed: false,
+			MimeType:          "",
+			PairMap:           nil,
+			Jwt:               auth,
+		}
+		uploadResult, err, data := operation.Upload(reader, uploadOption)
+		if err != nil {
+			glog.V(0).Infof("upload data %v to %s: %v", filename, fileUrl, err)
+			return nil, "", "", fmt.Errorf("upload data: %v", err)
+		}
+		if uploadResult.Error != "" {
+			glog.V(0).Infof("upload failure %v to %s: %v", filename, fileUrl, err)
+			return nil, "", "", fmt.Errorf("upload result: %v", uploadResult.Error)
+		}
+
+		if offset == 0 {
+			wfs.chunkCache.SetChunk(fileId, data)
+		}
+
+		chunk = uploadResult.ToPbFileChunk(fileId, offset)
+		return chunk, collection, replication, nil
+	}
+}