Alex LaneandDavide Pesavento
653eb07e29
Bring strategy logging in line with format from 6bf94c0.
This should also marginally improve performance when log level is raised.
Refs: #5262, #5267
Co-authored-by: Davide Pesavento <davidepesa@gmail.com>
Change-Id: I6493b6476f3d0c6ae5562b66abfa46f6c6f4903d
89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2014-2023, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis.
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "random-strategy.hpp"
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#include "algorithm.hpp"
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#include <ndn-cxx/util/random.hpp>
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namespace nfd::fw {
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NFD_REGISTER_STRATEGY(RandomStrategy);
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NFD_LOG_INIT(RandomStrategy);
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RandomStrategy::RandomStrategy(Forwarder& forwarder, const Name& name)
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: Strategy(forwarder)
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, ProcessNackTraits(this)
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{
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ParsedInstanceName parsed = parseInstanceName(name);
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if (!parsed.parameters.empty()) {
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NDN_THROW(std::invalid_argument("RandomStrategy does not accept parameters"));
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}
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if (parsed.version && *parsed.version != getStrategyName()[-1].toVersion()) {
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NDN_THROW(std::invalid_argument(
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"RandomStrategy does not support version " + to_string(*parsed.version)));
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}
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this->setInstanceName(makeInstanceName(name, getStrategyName()));
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}
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const Name&
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RandomStrategy::getStrategyName()
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{
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static const auto strategyName = Name("/localhost/nfd/strategy/random").appendVersion(1);
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return strategyName;
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}
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void
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RandomStrategy::afterReceiveInterest(const Interest& interest, const FaceEndpoint& ingress,
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const shared_ptr<pit::Entry>& pitEntry)
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{
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const fib::Entry& fibEntry = this->lookupFib(*pitEntry);
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fib::NextHopList nhs;
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std::copy_if(fibEntry.getNextHops().begin(), fibEntry.getNextHops().end(), std::back_inserter(nhs),
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[&] (const auto& nh) { return isNextHopEligible(ingress.face, interest, nh, pitEntry); });
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if (nhs.empty()) {
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NFD_LOG_INTEREST_FROM(interest, ingress, "no-nexthop");
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lp::NackHeader nackHeader;
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nackHeader.setReason(lp::NackReason::NO_ROUTE);
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this->sendNack(nackHeader, ingress.face, pitEntry);
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this->rejectPendingInterest(pitEntry);
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return;
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}
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std::shuffle(nhs.begin(), nhs.end(), ndn::random::getRandomNumberEngine());
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this->sendInterest(interest, nhs.front().getFace(), pitEntry);
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}
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void
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RandomStrategy::afterReceiveNack(const lp::Nack& nack, const FaceEndpoint& ingress,
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const shared_ptr<pit::Entry>& pitEntry)
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{
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this->processNack(nack, ingress.face, pitEntry);
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}
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} // namespace nfd::fw
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