go code can read and write chunk manifest

1 files changed, 66 insertions, 0 deletions

diff --git a/weed/filesys/wfs_write.go b/weed/filesys/wfs_write.go
new file mode 100644
index 000000000..786d0b42a
--- /dev/null
+++ b/weed/filesys/wfs_write.go
@@ -0,0 +1,66 @@
+package filesys
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"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"
+)
+
+func (wfs *WFS) saveDataAsChunk(dir string) filer2.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(func(client filer_pb.SeaweedFilerClient) error {
+
+			request := &filer_pb.AssignVolumeRequest{
+				Count:       1,
+				Replication: wfs.option.Replication,
+				Collection:  wfs.option.Collection,
+				TtlSec:      wfs.option.TtlSec,
+				DataCenter:  wfs.option.DataCenter,
+				ParentPath:  dir,
+			}
+
+			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, host, auth = resp.FileId, resp.Url, security.EncodedJwt(resp.Auth)
+			host = wfs.AdjustedUrl(host)
+			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)
+		uploadResult, err, data := operation.Upload(fileUrl, filename, wfs.option.Cipher, reader, false, "", nil, auth)
+		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)
+		}
+
+		wfs.chunkCache.SetChunk(fileId, data)
+
+		chunk = uploadResult.ToPbFileChunk(fileId, offset)
+		return chunk, "", "", nil
+	}
+}