flq_allocation_state.h

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// Copyright (C) 2023 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef FLQ_ALLOCATION_STATE_H
#define FLQ_ALLOCATION_STATE_H
 
#include <dhcpsrv/allocation_state.h>
#include <dhcpsrv/pool.h>
#include <dhcpsrv/subnet.h>
#include <boost/shared_ptr.hpp>
#include <cstdint>
 
namespace isc {
namespace dhcp {
 
class PoolFreeLeaseQueueAllocationState;
 
typedef boost::shared_ptr<PoolFreeLeaseQueueAllocationState> PoolFreeLeaseQueueAllocationStatePtr;
 
class PoolFreeLeaseQueueAllocationState : public AllocationState {
public:
 
    static PoolFreeLeaseQueueAllocationStatePtr create(const PoolPtr& pool);
 
    PoolFreeLeaseQueueAllocationState(Lease::Type type);
 
    bool exhausted() const;
 
    void addFreeLease(const asiolink::IOAddress& address);
 
    void deleteFreeLease(const asiolink::IOAddress& address);
 
    asiolink::IOAddress offerFreeLease();
 
    size_t getFreeLeaseCount() const;
 
private:
 
    template<typename AddressType>
    using FreeLeaseQueue = boost::multi_index_container<
        AddressType,
        boost::multi_index::indexed_by<
            boost::multi_index::sequenced<>,
            boost::multi_index::hashed_unique<
                boost::multi_index::identity<AddressType>
            >
        >
    >;
 
    typedef boost::shared_ptr<FreeLeaseQueue<uint32_t>> FreeLease4QueuePtr;
 
    typedef boost::shared_ptr<FreeLeaseQueue<asiolink::IOAddress>> FreeLease6QueuePtr;
 
    FreeLease4QueuePtr free_lease4_queue_;
 
    FreeLease6QueuePtr free_lease6_queue_;
};
 
 
} // end of isc::dhcp namespace
} // end of isc namespace
 
#endif // FLQ_ALLOCATION_STATE_H