--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/TransferBucket.h	Mon Sep 17 11:34:55 2018 +0200
@@ -0,0 +1,78 @@
+/**
+ * Transfers accelerator plugin for Orthanc
+ * Copyright (C) 2018 Osimis, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "DicomInstanceInfo.h"
+#include "TransferToolbox.h"
+
+namespace OrthancPlugins
+{
+  class TransferBucket
+  {
+  private:
+    struct Chunk
+    {
+      std::string  instanceId_;
+      size_t       offset_;
+      size_t       size_;
+    };
+
+    std::vector<Chunk>  chunks_;
+    size_t              totalSize_;
+    bool                extensible_;
+
+  public:
+    TransferBucket();
+
+    TransferBucket(const Json::Value& serialized);
+
+    size_t GetTotalSize() const
+    {
+      return totalSize_;
+    }
+
+    void Reserve(size_t size)
+    {
+      chunks_.reserve(size);
+    }
+    
+    size_t GetChunksCount() const
+    {
+      return chunks_.size();
+    }
+
+    void Serialize(Json::Value& target) const;
+    
+    void Clear();
+    
+    void AddChunk(const DicomInstanceInfo& instance,
+                  size_t chunkOffset,
+                  size_t chunkSize);
+    
+    const std::string& GetChunkInstanceId(size_t index) const;
+
+    size_t GetChunkOffset(size_t index) const;
+
+    size_t GetChunkSize(size_t index) const;
+
+    void ComputePullUri(std::string& uri,
+                        BucketCompression compression) const;
+  };
+}