flq_allocator.h

Go to the documentation of this file.

// 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_ALLOCATOR_H
#define FLQ_ALLOCATOR_H
 
#include <dhcpsrv/allocator.h>
#include <dhcpsrv/flq_allocation_state.h>
#include <dhcpsrv/lease.h>
#include <cstdint>
 
namespace isc {
namespace dhcp {
 
class FreeLeaseQueueAllocator : public Allocator {
public:
 
    FreeLeaseQueueAllocator(Lease::Type type, const WeakSubnetPtr& subnet);
 
    virtual std::string getType() const {
        return ("flq");
    }
 
private:
 
    virtual void initAfterConfigureInternal();
 
    template<typename LeaseCollectionType>
    void populateFreeAddressLeases(const LeaseCollectionType& leases, const PoolCollection& pools);
 
    void populateFreePrefixDelegationLeases(const Lease6Collection& leases, const PoolCollection& pools);
 
    virtual asiolink::IOAddress pickAddressInternal(const ClientClasses& client_classes,
                                                    const IdentifierBaseTypePtr& duid,
                                                    const asiolink::IOAddress& hint);
 
    virtual isc::asiolink::IOAddress
    pickPrefixInternal(const ClientClasses& client_classes,
                       Pool6Ptr& pool,
                       const IdentifierBaseTypePtr& duid,
                       PrefixLenMatchType prefix_length_match,
                       const isc::asiolink::IOAddress& hint,
                       uint8_t hint_prefix_length);
 
    PoolFreeLeaseQueueAllocationStatePtr getPoolState(const PoolPtr& pool) const;
 
    PoolPtr getLeasePool(const LeasePtr& lease) const;
 
    void addLeaseCallback(LeasePtr lease);
 
    void addLeaseCallbackInternal(LeasePtr lease);
 
    void updateLeaseCallback(LeasePtr lease);
 
    void updateLeaseCallbackInternal(LeasePtr lease);
 
    void deleteLeaseCallback(LeasePtr lease);
 
    void deleteLeaseCallbackInternal(LeasePtr lease);
 
    uint64_t getRandomNumber(uint64_t limit);
 
    std::mt19937 generator_;
};
 
} // end of namespace isc::dhcp
} // end of namespace isc
 
#endif // FLQ_ALLOCATOR_H