PeerList.hpp

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#ifndef PEERLIST_HPP
#define PEERLIST_HPP

#include <vector>
#include <ipcdef.hpp>
#include <Lockable.hpp>

typedef struct {
    PeerAddr addr;  
    void *state;    
} PeerAddrWithState;

typedef bool (*peer_init_handler)( void **, void *, PeerAddr addr );
typedef bool (*peer_rm_handler)( void *, void * );

typedef std::vector<PeerAddrWithState> PeerVector;

class PeerList : public Lockable {
private:
    peer_init_handler init;
    void *handler_arg;
    peer_rm_handler rm;
    PeerVector internal_vector;
    bool ready;
public:
    typedef PeerVector::const_iterator const_iterator;  
    typedef PeerVector::iterator PeerVectorIt;          
    PeerList() { rm = NULL; init = NULL; }
    PeerVectorIt find( PeerAddr addr, bool *found ) {
        PeerVectorIt it = internal_vector.begin();
        *found = false;
        if( internal_vector.size() == 0 ) {
            goto done;
        }
        for( ;it < internal_vector.end(); ++it ) {
            if( addr == (*it).addr ) {
                *found = true;
                break;
            }
            if( addr < (*it).addr ) {
                break;
            }
        }
done:
        return it;
    }   
    bool add( PeerAddr addr ) {
        bool found;
        PeerVectorIt it;
        it = find( addr, &found );
        if( found ) {
            return false;
        } else {
            PeerAddrWithState addr_state = { addr, NULL };
            if( init ) {
                if( !init( &addr_state.state, handler_arg, addr )) {
                    //DBGPRINT("Call to initialize peer state failed");
                    // return false?
                } else {
                    internal_vector.insert( it, addr_state );
                }
            }
        }
        return true;
    }
    bool remove( PeerAddr addr ) {
        bool found;
        PeerVectorIt it;
        it = find( addr, &found );
        if( !found ) {
            return false;
        } else {
            if( rm != NULL ) {
                if( !rm( it->state, handler_arg ) ) {
                    fprintf( stderr, "Call to cleanup peer state failed\n" );
                }
            }
            internal_vector.erase( it );
        }
        return true;
    }
    const_iterator begin() {
        return internal_vector.begin();
    }
    const_iterator end() {
        return internal_vector.end();
    }
    void setInit( peer_init_handler init, void *init_arg ) {
        this->init = init;
        this->handler_arg = init_arg;
    }
    void setRm( peer_rm_handler rm ) {
        this->rm = rm;
    }
    bool IsReady() { return ready; }
    void setReady( bool ready ) { this->ready = ready; }
};

#endif/*PEERLIST_HPP*/