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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/errors/errors.h>
#include <hicn/transport/interfaces/callbacks.h>
#include <hicn/transport/utils/literals.h>
#include <implementation/socket_consumer.h>
#include <protocols/indexer.h>
#include <protocols/reassembly.h>
#include <deque>
namespace transport {
namespace interface {
class ConsumerSocket;
}
namespace protocol {
class Reassembly;
class TransportProtocol;
class IncrementalIndexer : public Indexer {
public:
IncrementalIndexer(implementation::ConsumerSocket *icn_socket,
TransportProtocol *transport)
: Indexer(icn_socket, transport),
final_suffix_(Indexer::invalid_index),
first_suffix_(0),
next_download_suffix_(0),
next_reassembly_suffix_(0) {}
IncrementalIndexer(const IncrementalIndexer &other) = delete;
IncrementalIndexer(IncrementalIndexer &&other)
: Indexer(std::forward<Indexer>(other)),
final_suffix_(other.final_suffix_),
first_suffix_(other.first_suffix_),
next_download_suffix_(other.next_download_suffix_),
next_reassembly_suffix_(other.next_reassembly_suffix_) {}
virtual ~IncrementalIndexer() {}
virtual void reset() override {
final_suffix_ = Indexer::invalid_index;
next_download_suffix_ = first_suffix_;
next_reassembly_suffix_ = first_suffix_;
}
virtual uint32_t checkNextSuffix() const override {
return next_download_suffix_ <= final_suffix_ ? next_download_suffix_
: Indexer::invalid_index;
}
virtual uint32_t getNextSuffix() override {
return next_download_suffix_ <= final_suffix_ ? next_download_suffix_++
: Indexer::invalid_index;
}
virtual void setFirstSuffix(uint32_t suffix) override {
first_suffix_ = suffix;
}
uint32_t getFirstSuffix() const override { return first_suffix_; }
virtual uint32_t jumpToIndex(uint32_t index) override {
next_download_suffix_ = index;
return next_download_suffix_;
}
/**
* Retrive the next segment to be reassembled.
*/
virtual uint32_t getNextReassemblySegment() override {
return next_reassembly_suffix_ <= final_suffix_ ? next_reassembly_suffix_++
: Indexer::invalid_index;
}
virtual bool isFinalSuffixDiscovered() override {
return final_suffix_ != Indexer::invalid_index;
}
virtual uint32_t getFinalSuffix() const override { return final_suffix_; }
void enableFec(fec::FECType fec_type) override {}
void disableFec() override {}
void setNFec(uint32_t n_fec) override {}
virtual uint32_t getNFec() const override { return 0; }
virtual void onContentObject(core::Interest &interest,
core::ContentObject &content_object,
bool reassembly) override;
protected:
uint32_t final_suffix_;
uint32_t first_suffix_;
uint32_t next_download_suffix_;
uint32_t next_reassembly_suffix_;
};
} // namespace protocol
} // namespace transport
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