audit_list.h

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/*
 * Copyright (c) 2016 Juniper Networks, Inc. All rights reserved.
 */

#ifndef vnsw_agent_audit_list_hpp
#define vnsw_agent_audit_list_hpp

// Template function to audit two lists. This is used to synchronize the
// operational and config list for Floating-IP, Service-Vlans, Static Routes
// and SG List
template<class List, class Iterator>
bool AuditList(List &list, Iterator old_first, Iterator old_last,
               Iterator new_first, Iterator new_last) {
    bool ret = false;
    Iterator old_iterator = old_first;
    Iterator new_iterator = new_first;
    while (old_iterator != old_last && new_iterator != new_last) {
        if (old_iterator->IsLess(new_iterator.operator->())) {
            Iterator bkp = old_iterator++;
            list.Remove(bkp);
            ret = true;
        } else if (new_iterator->IsLess(old_iterator.operator->())) {
            Iterator bkp = new_iterator++;
            list.Insert(bkp.operator->());
            ret = true;
        } else {
            Iterator old_bkp = old_iterator++;
            Iterator new_bkp = new_iterator++;
            list.Update(old_bkp.operator->(), new_bkp.operator->());
            ret = true;
        }
    }

    while (old_iterator != old_last) {
        Iterator bkp = old_iterator++;
        list.Remove(bkp);
        ret = true;
    }

    while (new_iterator != new_last) {
        Iterator bkp = new_iterator++;
        list.Insert(bkp.operator->());
        ret = true;
    }

    return ret;
}
#endif