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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/utils/spinlock.h>
#include <mutex>
namespace transport {
namespace core {
class Name;
class ContentObject;
class Interest;
} // namespace core
} // namespace transport
namespace utils {
using Name = transport::core::Name;
using ContentObject = transport::core::ContentObject;
using Interest = transport::core::Interest;
typedef std::pair<std::shared_ptr<ContentObject>, utils::SteadyTime::TimePoint>
ObjectTimeEntry;
typedef std::pair<ObjectTimeEntry,
std::list<std::reference_wrapper<const Name>>::iterator>
ContentStoreEntry;
typedef std::list<std::reference_wrapper<const Name>> FIFOList;
typedef std::unordered_map<Name, ContentStoreEntry> ContentStoreHashTable;
class ContentStore {
public:
explicit ContentStore(std::size_t max_packets = (1 << 16));
~ContentStore();
void insert(const std::shared_ptr<ContentObject> &content_object);
std::shared_ptr<ContentObject> find(const Name &name);
void erase(const Name &exact_name);
void setLimit(size_t max_packets);
size_t getLimit() const;
size_t size() const;
void printContent();
private:
ContentStoreHashTable content_store_hash_table_;
FIFOList fifo_list_;
std::shared_ptr<ContentObject> empty_reference_;
// Must be atomic
std::atomic_size_t max_content_store_size_;
mutable utils::SpinLock cs_mutex_;
};
} // end namespace utils
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