lease_mgr_factory.h

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// Copyright (C) 2012-2025 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 LEASE_MGR_FACTORY_H
#define LEASE_MGR_FACTORY_H
 
#include <database/database_connection.h>
#include <dhcpsrv/tracking_lease_mgr.h>
#include <exceptions/exceptions.h>
 
#include <boost/scoped_ptr.hpp>
 
#include <string>
 
namespace isc {
namespace dhcp {

class NoLeaseManager : public Exception {
public:
    NoLeaseManager(const char* file, size_t line, const char* what) :
        isc::Exception(file, line, what) {}
};

class LeaseMgrFactory {
public:
    ~LeaseMgrFactory() {
        destroy();
    }

    static void create(const std::string& dbaccess);

    static void destroy();

    static void recreate(const std::string& dbaccess,
                         bool preserve_callbacks = true);

    static TrackingLeaseMgr& instance();

    static bool haveInstance();

    typedef std::function<TrackingLeaseMgrPtr (const db::DatabaseConnection::ParameterMap&)> Factory;

    typedef std::function<std::string ()> DBVersion;

    static bool registerFactory(const std::string& db_type,
                                const Factory& factory,
                                bool no_log = false,
                                DBVersion db_version = DBVersion());

    static bool deregisterFactory(const std::string& db_type,
                                  bool no_log = false);

    static bool registeredFactory(const std::string& db_type);

    static void logRegistered();

    static std::list<std::string> getDBVersions();
 
private:
    static TrackingLeaseMgrPtr& getLeaseMgrPtr();

    static std::map<std::string, std::pair<Factory, DBVersion>> map_;
};
 
} // end of isc::dhcp namespace
} // end of isc namespace
 
#endif // LEASE_MGR_FACTORY_H