pgsql_lease_mgr.h

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// Copyright (C) 2013-2018 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 PGSQL_LEASE_MGR_H
#define PGSQL_LEASE_MGR_H
 
#include <dhcp/hwaddr.h>
#include <dhcpsrv/dhcpsrv_exceptions.h>
#include <dhcpsrv/lease_mgr.h>
#include <pgsql/pgsql_connection.h>
#include <pgsql/pgsql_exchange.h>
 
#include <boost/scoped_ptr.hpp>
#include <boost/utility.hpp>
 
#include <vector>
 
namespace isc {
namespace dhcp {
 
// Forward definitions (needed for shared_ptr definitions)
// See pgsql_lease_mgr.cc file for actual class definitions
class PgSqlLease4Exchange;
class PgSqlLease6Exchange;
 
class PgSqlLeaseMgr : public LeaseMgr {
public:
 
    PgSqlLeaseMgr(const db::DatabaseConnection::ParameterMap& parameters);
 
    virtual ~PgSqlLeaseMgr();
 
    static std::string getDBVersion();
 
    virtual bool addLease(const Lease4Ptr& lease);
 
    virtual bool addLease(const Lease6Ptr& lease);
 
    virtual Lease4Ptr getLease4(const isc::asiolink::IOAddress& addr) const;
 
    virtual Lease4Collection getLease4(const isc::dhcp::HWAddr& hwaddr) const;
 
    virtual Lease4Ptr getLease4(const isc::dhcp::HWAddr& hwaddr,
                                SubnetID subnet_id) const;
 
    virtual Lease4Collection getLease4(const ClientId& clientid) const;
 
    virtual Lease4Ptr getLease4(const ClientId& client_id, const HWAddr& hwaddr,
                                SubnetID subnet_id) const;
 
    virtual Lease4Ptr getLease4(const ClientId& clientid,
                                SubnetID subnet_id) const;
 
    virtual Lease4Collection getLeases4(SubnetID subnet_id) const;
 
    virtual Lease4Collection getLeases4() const;
 
    virtual Lease4Collection
    getLeases4(const asiolink::IOAddress& lower_bound_address,
               const LeasePageSize& page_size) const;
 
    virtual Lease6Ptr getLease6(Lease::Type type,
                                const isc::asiolink::IOAddress& addr) const;
 
    virtual Lease6Collection getLeases6(Lease::Type type, const DUID& duid,
                                       uint32_t iaid) const;
 
    virtual Lease6Collection getLeases6(Lease::Type type, const DUID& duid,
                                        uint32_t iaid, SubnetID subnet_id) const;
 
    virtual Lease6Collection getLeases6(SubnetID subnet_id) const;
 
    virtual Lease6Collection getLeases6() const;
 
    virtual Lease6Collection getLeases6(const DUID& duid) const;
    
    virtual Lease6Collection
    getLeases6(const asiolink::IOAddress& lower_bound_address,
               const LeasePageSize& page_size) const;
 
    virtual void getExpiredLeases4(Lease4Collection& expired_leases,
                                   const size_t max_leases) const;
 
    virtual void getExpiredLeases6(Lease6Collection& expired_leases,
                                   const size_t max_leases) const;
 
    virtual void updateLease4(const Lease4Ptr& lease4);
 
    virtual void updateLease6(const Lease6Ptr& lease6);
 
    virtual bool deleteLease(const isc::asiolink::IOAddress& addr);
 
    virtual uint64_t deleteExpiredReclaimedLeases4(const uint32_t secs);
 
    virtual uint64_t deleteExpiredReclaimedLeases6(const uint32_t secs);
 
    virtual LeaseStatsQueryPtr startLeaseStatsQuery4();
 
    virtual LeaseStatsQueryPtr startSubnetLeaseStatsQuery4(const SubnetID& subnet_id);
 
 
    virtual LeaseStatsQueryPtr startSubnetRangeLeaseStatsQuery4(const SubnetID& first_subnet_id,
                                                                const SubnetID& last_subnet_id);
    virtual LeaseStatsQueryPtr startLeaseStatsQuery6();
 
    virtual LeaseStatsQueryPtr startSubnetLeaseStatsQuery6(const SubnetID& subnet_id);
 
    virtual LeaseStatsQueryPtr startSubnetRangeLeaseStatsQuery6(const SubnetID& first_subnet_id,
                                                                const SubnetID& last_subnet_id);
    virtual size_t wipeLeases4(const SubnetID& subnet_id);
 
    virtual size_t wipeLeases6(const SubnetID& subnet_id);
 
    virtual std::string getType() const {
        return (std::string("postgresql"));
    }
 
    virtual std::string getName() const;
 
    virtual std::string getDescription() const;
 
    virtual std::pair<uint32_t, uint32_t> getVersion() const;
 
    virtual void commit();
 
    virtual void rollback();
 
    enum StatementIndex {
        DELETE_LEASE4,              // Delete from lease4 by address
        DELETE_LEASE4_STATE_EXPIRED,// Delete expired lease4s in certain state.
        DELETE_LEASE6,              // Delete from lease6 by address
        DELETE_LEASE6_STATE_EXPIRED,// Delete expired lease6s in certain state.
        GET_LEASE4,                 // Get all IPv4 leases
        GET_LEASE4_ADDR,            // Get lease4 by address
        GET_LEASE4_CLIENTID,        // Get lease4 by client ID
        GET_LEASE4_CLIENTID_SUBID,  // Get lease4 by client ID & subnet ID
        GET_LEASE4_HWADDR,          // Get lease4 by HW address
        GET_LEASE4_HWADDR_SUBID,    // Get lease4 by HW address & subnet ID
        GET_LEASE4_PAGE,            // Get page of leases beginning with an address
        GET_LEASE4_SUBID,           // Get IPv4 leases by subnet ID
        GET_LEASE4_EXPIRE,          // Get expired lease4
        GET_LEASE6,                 // Get all IPv6 leases
        GET_LEASE6_ADDR,            // Get lease6 by address
        GET_LEASE6_DUID_IAID,       // Get lease6 by DUID and IAID
        GET_LEASE6_DUID_IAID_SUBID, // Get lease6 by DUID, IAID and subnet ID
        GET_LEASE6_PAGE,            // Get page of IPv6 leases beginning with an address
        GET_LEASE6_SUBID,           // Get IPv6 leases by subnet ID
        GET_LEASE6_DUID,           // Get IPv6 leases by DUID
        GET_LEASE6_EXPIRE,          // Get expired lease6
        INSERT_LEASE4,              // Add entry to lease4 table
        INSERT_LEASE6,              // Add entry to lease6 table
        UPDATE_LEASE4,              // Update a Lease4 entry
        UPDATE_LEASE6,              // Update a Lease6 entry
        ALL_LEASE4_STATS,           // Fetches IPv4 lease statistics
        SUBNET_LEASE4_STATS,        // Fetched IPv4 lease stats for a single subnet.
        SUBNET_RANGE_LEASE4_STATS,  // Fetched IPv4 lease stats for a subnet range.
        ALL_LEASE6_STATS,           // Fetches IPv6 lease statistics
        SUBNET_LEASE6_STATS,        // Fetched IPv6 lease stats for a single subnet.
        SUBNET_RANGE_LEASE6_STATS,  // Fetched IPv6 lease stats for a subnet range.
        NUM_STATEMENTS              // Number of statements
    };
 
private:
 
    bool addLeaseCommon(StatementIndex stindex, db::PsqlBindArray& bind_array);
 
    template <typename Exchange, typename LeaseCollection>
    void getLeaseCollection(StatementIndex stindex, db::PsqlBindArray& bind_array,
                            Exchange& exchange, LeaseCollection& result,
                            bool single = false) const;
 
    void getLeaseCollection(StatementIndex stindex, db::PsqlBindArray& bind_array,
                            Lease4Collection& result) const {
        getLeaseCollection(stindex, bind_array, exchange4_, result);
    }
 
    void getLeaseCollection(StatementIndex stindex, db::PsqlBindArray& bind_array,
                            Lease6Collection& result) const {
        getLeaseCollection(stindex, bind_array, exchange6_, result);
    }
 
    void getLease(StatementIndex stindex, db::PsqlBindArray& bind_array,
                  Lease4Ptr& result) const;
 
    void getLease(StatementIndex stindex, db::PsqlBindArray& bind_array,
                  Lease6Ptr& result) const;
 
    template<typename LeaseCollection>
    void getExpiredLeasesCommon(LeaseCollection& expired_leases,
                                const size_t max_leases,
                                StatementIndex statement_index) const;
 
    template <typename LeasePtr>
    void updateLeaseCommon(StatementIndex stindex, db::PsqlBindArray& bind_array,
                           const LeasePtr& lease);
 
    uint64_t deleteLeaseCommon(StatementIndex stindex,
                               db::PsqlBindArray& bind_array);
 
    uint64_t deleteExpiredReclaimedLeasesCommon(const uint32_t secs,
                                                StatementIndex statement_index);
 
    boost::scoped_ptr<PgSqlLease4Exchange> exchange4_; 
    boost::scoped_ptr<PgSqlLease6Exchange> exchange6_; 
 
    db::PgSqlConnection conn_;
};
 
}  // namespace dhcp
}  // namespace isc
 
#endif // PGSQL_LEASE_MGR_H