1 files changed, 106 insertions, 0 deletions
diff --git a/libtransport/src/protocols/indexer.h b/libtransport/src/protocols/indexer.h
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+++ b/libtransport/src/protocols/indexer.h
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+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <hicn/transport/core/content_object.h>
+#include <hicn/transport/core/interest.h>
+
+#include <set>
+
+namespace transport {
+
+namespace implementation {
+class ConsumerSocket;
+}
+
+namespace protocol {
+
+class Reassembly;
+class TransportProtocol;
+
+class Indexer {
+ public:
+  /**
+   *
+   */
+  virtual ~Indexer() = default;
+  /**
+   * Retrieve from the manifest the next suffix to retrieve.
+   */
+  virtual uint32_t getNextSuffix() = 0;
+
+  virtual void setFirstSuffix(uint32_t suffix) = 0;
+
+  /**
+   * Retrive the next segment to be reassembled.
+   */
+  virtual uint32_t getNextReassemblySegment() = 0;
+
+  virtual bool isFinalSuffixDiscovered() = 0;
+
+  virtual uint32_t getFinalSuffix() = 0;
+
+  virtual void reset(std::uint32_t offset = 0) = 0;
+
+  virtual void onContentObject(core::Interest::Ptr &&interest,
+                               core::ContentObject::Ptr &&content_object) = 0;
+
+  virtual bool onKeyToVerify() = 0;
+};
+
+class IndexManager : Indexer {
+ public:
+  static constexpr uint32_t invalid_index = ~0;
+
+  IndexManager(implementation::ConsumerSocket *icn_socket,
+               TransportProtocol *transport, Reassembly *reassembly);
+
+  uint32_t getNextSuffix() override { return indexer_->getNextSuffix(); }
+
+  void setFirstSuffix(uint32_t suffix) override {
+    indexer_->setFirstSuffix(suffix);
+  }
+
+  uint32_t getNextReassemblySegment() override {
+    return indexer_->getNextReassemblySegment();
+  }
+
+  bool isFinalSuffixDiscovered() override {
+    return indexer_->isFinalSuffixDiscovered();
+  }
+
+  uint32_t getFinalSuffix() override { return indexer_->getFinalSuffix(); }
+
+  void reset(std::uint32_t offset = 0) override;
+
+  void onContentObject(core::Interest::Ptr &&interest,
+                       core::ContentObject::Ptr &&content_object) override;
+
+  bool onKeyToVerify() override;
+
+ private:
+  std::unique_ptr<Indexer> indexer_;
+  bool first_segment_received_;
+  std::set<std::pair<core::Interest::Ptr, core::ContentObject::Ptr>>
+      interest_data_set_;
+  implementation::ConsumerSocket *icn_socket_;
+  TransportProtocol *transport_;
+  Reassembly *reassembly_;
+};
+
+}  // end namespace protocol
+
+}  // end namespace transport