PeContainer.h

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#ifndef PE_CONTAINER_H
#define PE_CONTAINER_H

#include "y2storage/Container.h"
#include "y2storage/Dm.h"

namespace storage
{

class PeContainer : public Container
    {
    friend class Storage;

    public:
        PeContainer( Storage * const s, storage::CType t );
        PeContainer( const PeContainer& c );
        PeContainer& operator= ( const PeContainer& rhs );
        virtual ~PeContainer();

        unsigned long long peSize() const { return pe_size; }
        unsigned long long sizeK() const { return pe_size*num_pe; }
        unsigned long peCount() const { return num_pe; }
        unsigned long peFree() const { return free_pe; }
        unsigned numPv() const { return pv.size(); }
        friend std::ostream& operator<< (std::ostream&, const PeContainer& );
        bool addedPv( const string& dev ) const;
        unsigned long sizeToLe( unsigned long long sizeK ) const;

        int setPeSize( long long unsigned, bool lvm1 );
        void unuseDev();
        void changeDeviceName( const string& old, const string& nw );
        bool equalContent( const PeContainer& rhs, bool comp_vol=true ) const;
        virtual string getDiffString( const Container& d ) const;
        
    protected:
        struct Pv
            {
            string device;
            string uuid;
            string status;
            unsigned long num_pe;
            unsigned long free_pe;

            static bool comp_le( const Pv& a, const Pv& b )
                { return( a.free_pe<b.free_pe ); }
            static bool no_free( const Pv& a )
                { return( a.free_pe==0 ); }

            bool operator== ( const Pv& rhs ) const
                { return( device==rhs.device ); }
            bool operator== ( const string& dev ) const
                { return( device==dev); }
            bool equalContent( const Pv& rhs ) const
                { return( device==rhs.device && uuid==rhs.uuid &&
                          status==rhs.status && num_pe==rhs.num_pe &&
                          free_pe==rhs.free_pe ); }
            Pv() { num_pe = free_pe = 0; }
            };

        // iterators over Dm volumes
        typedef CastIterator<VIter, Dm *> DmInter;
        typedef CastIterator<CVIter, const Dm *> DmCInter;
        template< class Pred >
            struct DmPI { typedef ContainerIter<Pred, DmInter> type; };
        template< class Pred >
            struct DmCPI { typedef ContainerIter<Pred, DmCInter> type; };
        typedef CheckFnc<const Dm> CheckFncDm;
        typedef CheckerIterator< CheckFncDm, DmPI<CheckFncDm>::type,
                                 DmInter, Dm > DmPIterator;
        typedef CheckerIterator< CheckFncDm, DmCPI<CheckFncDm>::type,
                                 DmCInter, const Dm > DmCPIterator;
        typedef DerefIterator<DmPIterator,Dm> DmIter;
        typedef DerefIterator<DmCPIterator,const Dm> ConstDmIter;
        typedef IterPair<DmIter> DmPair;
        typedef IterPair<ConstDmIter> ConstDmPair;

        DmPair dmPair( bool (* Check)( const Dm& )=NULL)
            {
            return( DmPair( dmBegin( Check ), dmEnd( Check ) ));
            }
        DmIter dmBegin( bool (* Check)( const Dm& )=NULL)
            {
            IterPair<DmInter> p( (DmInter(begin())), (DmInter(end())) );
            return( DmIter( DmPIterator( p, Check )) );
            }
        DmIter dmEnd( bool (* Check)( const Dm& )=NULL)
            {
            IterPair<DmInter> p( (DmInter(begin())), (DmInter(end())) );
            return( DmIter( DmPIterator( p, Check, true )) );
            }

        ConstDmPair dmPair( bool (* Check)( const Dm& )=NULL) const
            {
            return( ConstDmPair( dmBegin( Check ), dmEnd( Check ) ));
            }
        ConstDmIter dmBegin( bool (* Check)( const Dm& )=NULL) const
            {
            IterPair<DmCInter> p( (DmCInter(begin())), (DmCInter(end())) );
            return( ConstDmIter( DmCPIterator( p, Check )) );
            }
        ConstDmIter dmEnd( bool (* Check)( const Dm& )=NULL) const
            {
            IterPair<DmCInter> p( (DmCInter(begin())), (DmCInter(end())) );
            return( ConstDmIter( DmCPIterator( p, Check, true )) );
            }


        friend std::ostream& operator<< (std::ostream&, const Pv& );
        friend void printDevList (std::ostream&, const std::list<Pv>& );

        void init();
        string addList() const;
        virtual void print( std::ostream& s ) const { s << *this; }
        virtual Container* getCopy() const { return( new PeContainer( *this ) ); }
        bool findPe( const string& dev, const std::list<Pv>& pl, 
                     std::list<Pv>::const_iterator& i ) const;
        bool findPe( const string& dev, std::list<Pv>& pl, 
                     std::list<Pv>::iterator& i );
        unsigned long leByLvRemove() const;
        int tryUnusePe( const string& dev, std::list<Pv>& pl, std::list<Pv>& pladd,
                        std::list<Pv>& plrem, unsigned long& removed_pe );
        bool checkCreateConstraints();
        static int addLvPeDistribution( unsigned long le, unsigned stripe,
                                        std::list<Pv>& pl, std::list<Pv>& pladd, 
                                        std::map<string,unsigned long>& pe_map );
        int remLvPeDistribution( unsigned long le, std::map<string,unsigned long>& pe_map,
                                 std::list<Pv>& pl, std::list<Pv>& pladd );
        virtual bool checkConsistency() const;

        void addPv( const Pv* p );

        unsigned long long pe_size;
        unsigned long num_pe;
        unsigned long free_pe;
        std::list<Pv> pv;
        std::list<Pv> pv_add;
        std::list<Pv> pv_remove;
    };

}

#endif

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