IfaceTable.cpp

#include "IfaceTable.h"

namespace forest {


IfaceTable::IfaceTable(int maxIf1) : maxIf(maxIf1) {
                ift = new Entry[maxIf+1];
                ifaces = new ListPair(maxIf);
                defaultIf = 0;
}

IfaceTable::~IfaceTable() { delete [] ift; delete ifaces; }

bool IfaceTable::addEntry(int iface, ipa_t ipa, ipp_t ipp, RateSpec& rs) {
                if (!ifaces->isOut(iface)) return false;
                if (ifaces->firstIn() == 0) // this is the first iface
                                defaultIf = iface;
                ifaces->swap(iface);
                Entry& e = getEntry(iface);
                e.ipa = ipa; e.port = ipp;
                e.rates = e.availRates = rs;
                return true;
}

void IfaceTable::removeEntry(int iface) {
                if (ifaces->isIn(iface)) ifaces->swap(iface);
                if (iface == defaultIf) defaultIf = 0;
}

int IfaceTable::readEntry(istream& in) {
                int ifnum; ipa_t ipa; int port; RateSpec rs;

                Util::skipBlank(in);
                if (!Util::readInt(in,ifnum) || !Np4d::readIpAdr(in,ipa) ||
                    !Util::readInt(in,port) || !rs.read(in)) {
                                return 0;
                }
                Util::nextLine(in);

                if (!addEntry(ifnum,ipa,port,rs)) return 0;
                return ifnum;
}

bool IfaceTable::read(istream& in) {
                int num;
                Util::skipBlank(in);
        if (!Util::readInt(in,num)) return false;
        Util::nextLine(in);
                for (int i = 1; i <= num; i++) {
                                if (readEntry(in) == 0) {
                                                cerr << "IfaceTable::read: Error in "
                                                     << i << "-th entry read from input\n";
                                                return false;
                                }
                }
                return true;
}

string IfaceTable::entry2string(int iface) const {
                stringstream ss;
                ss << setw(5) << iface << "   " << Np4d::ip2string(ift[iface].ipa)
                   << " " << ift[iface].port << " "
                   << ift[iface].rates.toString() << endl;
                return ss.str();
}

string IfaceTable::toString() const {
                stringstream ss;
                ss << ifaces->getNumIn() << endl;
                ss << "# iface  ipAddress      bitRate  pktRate\n";
                for (int i = firstIface(); i != 0; i = nextIface(i)) 
                                ss << entry2string(i);
                return ss.str();
}

} // ends namespace