fix parsing receiver statistics replies

Author: jblomer

internal/gateway/receiver/receiver.go

@@ -323,7 +323,7 @@ func (r *CvmfsReceiver) reply() ([]byte, error) {
 func parseReceiverReply(reply []byte) (*ReceiverReply, error) {
 	res := &ReceiverReply{}
 	if err := json.Unmarshal(reply, res); err != nil {
-		return nil, errors.Wrap(err, "could not decode reply")
+		return nil, errors.Wrap(err, "could not decode receiver reply '" + string(reply[:]) + "'")
 	}
 	if res.Status != "ok" {
 		return res, Error(res.Reason)

internal/gateway/statistics/statistics.go

@@ -10,11 +10,11 @@ import (
 )
 
 type PublishCounters struct {
-	ChunksAdded          int64 `json:"n_chunks_added,string"`
-	ChunksDuplicated     int64 `json:"n_chunks_duplicated,string"`
-	CatalogsAdded        int64 `json:"n_catalogs_added,string"`
-	UploadedBytes        int64 `json:"sz_uploaded_bytes,string"`
-	UploadedCatalogBytes int64 `json:"sz_uploaded_catalog_bytes,string"`
+	ChunksAdded          int64 `json:"n_chunks_added"`
+	ChunksDuplicated     int64 `json:"n_chunks_duplicated"`
+	CatalogsAdded        int64 `json:"n_catalogs_added"`
+	UploadedBytes        int64 `json:"sz_uploaded_bytes"`
+	UploadedCatalogBytes int64 `json:"sz_uploaded_catalog_bytes"`
 }
 
 type Statistics struct {