From 3bce9bfdce707313de4f9cccdc867abd9edf82df Mon Sep 17 00:00:00 2001
From: Mauro Sardara <msardara@cisco.com>
Date: Fri, 7 Feb 2020 20:00:06 +0100
Subject: [HICN-508] [HICN-509] [HICN-506] Manifest rework

Change-Id: I992205148910be008d66b5acb7f6f1365770f9e8
Signed-off-by: Mauro Sardara <msardara@cisco.com>
---
 .../hicn/transport/protocols/incremental_indexer.h | 139 +++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 libtransport/src/hicn/transport/protocols/incremental_indexer.h

(limited to 'libtransport/src/hicn/transport/protocols/incremental_indexer.h')

diff --git a/libtransport/src/hicn/transport/protocols/incremental_indexer.h b/libtransport/src/hicn/transport/protocols/incremental_indexer.h
new file mode 100644
index 000000000..ea84d645a
--- /dev/null
+++ b/libtransport/src/hicn/transport/protocols/incremental_indexer.h
@@ -0,0 +1,139 @@
+/*
+ * 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/protocols/indexer.h>
+
+#include <hicn/transport/errors/runtime_exception.h>
+#include <hicn/transport/errors/unexpected_manifest_exception.h>
+#include <hicn/transport/protocols/reassembly.h>
+#include <hicn/transport/protocols/verification_manager.h>
+#include <hicn/transport/utils/literals.h>
+
+#include <deque>
+
+namespace transport {
+
+namespace interface {
+class ConsumerSocket;
+}
+
+namespace protocol {
+
+class Reassembly;
+class TransportProtocol;
+
+class IncrementalIndexer : public Indexer {
+ public:
+  IncrementalIndexer(interface::ConsumerSocket *icn_socket,
+                     TransportProtocol *transport, Reassembly *reassembly)
+      : socket_(icn_socket),
+        reassembly_(reassembly),
+        transport_protocol_(transport),
+        final_suffix_(std::numeric_limits<uint32_t>::max()),
+        first_suffix_(0),
+        next_download_suffix_(0),
+        next_reassembly_suffix_(0),
+        verification_manager_(
+            std::make_unique<SignatureVerificationManager>(icn_socket)) {
+    if (reassembly_) {
+      reassembly_->setIndexer(this);
+    }
+  }
+
+  IncrementalIndexer(const IncrementalIndexer &) = delete;
+
+  IncrementalIndexer(IncrementalIndexer &&other)
+      : socket_(other.socket_),
+        reassembly_(other.reassembly_),
+        transport_protocol_(other.transport_protocol_),
+        final_suffix_(other.final_suffix_),
+        first_suffix_(other.first_suffix_),
+        next_download_suffix_(other.next_download_suffix_),
+        next_reassembly_suffix_(other.next_reassembly_suffix_),
+        verification_manager_(std::move(other.verification_manager_)) {
+    if (reassembly_) {
+      reassembly_->setIndexer(this);
+    }
+  }
+
+  /**
+   *
+   */
+  virtual ~IncrementalIndexer() {}
+
+  TRANSPORT_ALWAYS_INLINE virtual void reset(
+      std::uint32_t offset = 0) override {
+    final_suffix_ = std::numeric_limits<uint32_t>::max();
+    next_download_suffix_ = offset;
+    next_reassembly_suffix_ = offset;
+  }
+
+  /**
+   * Retrieve from the manifest the next suffix to retrieve.
+   */
+  TRANSPORT_ALWAYS_INLINE virtual uint32_t getNextSuffix() override {
+    return next_download_suffix_ <= final_suffix_ ? next_download_suffix_++
+                                                  : IndexManager::invalid_index;
+  }
+
+  TRANSPORT_ALWAYS_INLINE virtual void setFirstSuffix(
+      uint32_t suffix) override {
+    first_suffix_ = suffix;
+  }
+
+  /**
+   * Retrive the next segment to be reassembled.
+   */
+  TRANSPORT_ALWAYS_INLINE virtual uint32_t getNextReassemblySegment() override {
+    return next_reassembly_suffix_ <= final_suffix_
+               ? next_reassembly_suffix_++
+               : IndexManager::invalid_index;
+  }
+
+  TRANSPORT_ALWAYS_INLINE virtual bool isFinalSuffixDiscovered() override {
+    return final_suffix_ != std::numeric_limits<uint32_t>::max();
+  }
+
+  TRANSPORT_ALWAYS_INLINE virtual uint32_t getFinalSuffix() override {
+    return final_suffix_;
+  }
+
+  void onContentObject(core::Interest::Ptr &&interest,
+                       core::ContentObject::Ptr &&content_object) override;
+
+  TRANSPORT_ALWAYS_INLINE void setReassembly(Reassembly *reassembly) {
+    reassembly_ = reassembly;
+
+    if (reassembly_) {
+      reassembly_->setIndexer(this);
+    }
+  }
+
+ protected:
+  interface::ConsumerSocket *socket_;
+  Reassembly *reassembly_;
+  TransportProtocol *transport_protocol_;
+  uint32_t final_suffix_;
+  uint32_t first_suffix_;
+  uint32_t next_download_suffix_;
+  uint32_t next_reassembly_suffix_;
+  std::unique_ptr<VerificationManager> verification_manager_;
+};
+
+}  // end namespace protocol
+
+}  // end namespace transport
-- 
cgit 1.2.3-korg