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/*
* Copyright (c) 2021 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/auth/common.h>
#include <implementation/socket.h>
#include <protocols/incremental_indexer_bytestream.h>
#include <utils/suffix_strategy.h>
#include <list>
namespace transport {
namespace protocol {
class ManifestIncrementalIndexer : public IncrementalIndexer {
static constexpr double alpha = 0.3;
public:
using SuffixQueue = std::queue<uint32_t>;
using InterestContentPair =
std::tuple<core::Interest::Ptr, core::ContentObject::Ptr, bool>;
ManifestIncrementalIndexer(implementation::ConsumerSocket *icn_socket,
TransportProtocol *transport);
ManifestIncrementalIndexer(IncrementalIndexer &&indexer)
: IncrementalIndexer(std::move(indexer)),
suffix_strategy_(utils::SuffixStrategyFactory::getSuffixStrategy(
utils::NextSuffixStrategy::INCREMENTAL, next_download_suffix_)) {
for (uint32_t i = first_suffix_; i < next_download_suffix_; i++) {
suffix_queue_.push(i);
}
}
virtual ~ManifestIncrementalIndexer() = default;
void reset() override;
void onContentObject(core::Interest &interest,
core::ContentObject &content_object,
bool reassembly) override;
uint32_t checkNextSuffix() const override;
uint32_t getNextSuffix() override;
uint32_t getNextReassemblySegment() override;
bool isFinalSuffixDiscovered() override;
uint32_t getFinalSuffix() const override;
protected:
std::unique_ptr<utils::SuffixStrategy> suffix_strategy_;
SuffixQueue suffix_queue_;
// Hash verification
auth::Verifier::SuffixMap suffix_map_;
std::unordered_map<auth::Suffix, InterestContentPair> unverified_segments_;
private:
void onUntrustedManifest(core::Interest &interest,
core::ContentObject &content_object,
bool reassembly);
void processTrustedManifest(core::Interest &interest,
std::unique_ptr<ContentObjectManifest> manifest,
bool reassembly);
void onUntrustedContentObject(core::Interest &interest,
core::ContentObject &content_object,
bool reassembly);
};
} // end namespace protocol
} // end namespace transport
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