Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 1 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
| 2 | /** |
Junxiao Shi | 986b849 | 2014-08-20 12:07:14 -0700 | [diff] [blame] | 3 | * Copyright (c) 2014, Regents of the University of California, |
| 4 | * Arizona Board of Regents, |
| 5 | * Colorado State University, |
| 6 | * University Pierre & Marie Curie, Sorbonne University, |
| 7 | * Washington University in St. Louis, |
| 8 | * Beijing Institute of Technology, |
| 9 | * The University of Memphis |
Alexander Afanasyev | 9bcbc7c | 2014-04-06 19:37:37 -0700 | [diff] [blame] | 10 | * |
| 11 | * This file is part of NFD (Named Data Networking Forwarding Daemon). |
| 12 | * See AUTHORS.md for complete list of NFD authors and contributors. |
| 13 | * |
| 14 | * NFD is free software: you can redistribute it and/or modify it under the terms |
| 15 | * of the GNU General Public License as published by the Free Software Foundation, |
| 16 | * either version 3 of the License, or (at your option) any later version. |
| 17 | * |
| 18 | * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
| 19 | * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 20 | * PURPOSE. See the GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License along with |
| 23 | * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>. |
Junxiao Shi | 986b849 | 2014-08-20 12:07:14 -0700 | [diff] [blame] | 24 | */ |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 25 | |
| 26 | #include "best-route-strategy.hpp" |
| 27 | |
| 28 | namespace nfd { |
Junxiao Shi | 8c8d218 | 2014-01-30 22:33:00 -0700 | [diff] [blame] | 29 | namespace fw { |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 30 | |
Junxiao Shi | 986b849 | 2014-08-20 12:07:14 -0700 | [diff] [blame] | 31 | const Name BestRouteStrategy::STRATEGY_NAME("ndn:/localhost/nfd/strategy/best-route/%FD%01"); |
Junxiao Shi | f3c0781 | 2014-03-11 21:48:49 -0700 | [diff] [blame] | 32 | |
| 33 | BestRouteStrategy::BestRouteStrategy(Forwarder& forwarder, const Name& name) |
| 34 | : Strategy(forwarder, name) |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 35 | { |
| 36 | } |
| 37 | |
| 38 | BestRouteStrategy::~BestRouteStrategy() |
| 39 | { |
| 40 | } |
| 41 | |
Junxiao Shi | 57f0f31 | 2014-03-16 11:52:20 -0700 | [diff] [blame] | 42 | static inline bool |
| 43 | predicate_PitEntry_canForwardTo_NextHop(shared_ptr<pit::Entry> pitEntry, |
| 44 | const fib::NextHop& nexthop) |
| 45 | { |
| 46 | return pitEntry->canForwardTo(*nexthop.getFace()); |
| 47 | } |
| 48 | |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 49 | void |
| 50 | BestRouteStrategy::afterReceiveInterest(const Face& inFace, |
| 51 | const Interest& interest, |
| 52 | shared_ptr<fib::Entry> fibEntry, |
Junxiao Shi | 8c8d218 | 2014-01-30 22:33:00 -0700 | [diff] [blame] | 53 | shared_ptr<pit::Entry> pitEntry) |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 54 | { |
Junxiao Shi | 57f0f31 | 2014-03-16 11:52:20 -0700 | [diff] [blame] | 55 | if (pitEntry->hasUnexpiredOutRecords()) { |
| 56 | // not a new Interest, don't forward |
| 57 | return; |
| 58 | } |
| 59 | |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 60 | const fib::NextHopList& nexthops = fibEntry->getNextHops(); |
Junxiao Shi | 57f0f31 | 2014-03-16 11:52:20 -0700 | [diff] [blame] | 61 | fib::NextHopList::const_iterator it = std::find_if(nexthops.begin(), nexthops.end(), |
| 62 | bind(&predicate_PitEntry_canForwardTo_NextHop, pitEntry, _1)); |
| 63 | |
| 64 | if (it == nexthops.end()) { |
Junxiao Shi | 09498f0 | 2014-02-26 19:41:08 -0700 | [diff] [blame] | 65 | this->rejectPendingInterest(pitEntry); |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 66 | return; |
| 67 | } |
Junxiao Shi | 57f0f31 | 2014-03-16 11:52:20 -0700 | [diff] [blame] | 68 | |
| 69 | shared_ptr<Face> outFace = it->getFace(); |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 70 | this->sendInterest(pitEntry, outFace); |
| 71 | } |
| 72 | |
Junxiao Shi | 8c8d218 | 2014-01-30 22:33:00 -0700 | [diff] [blame] | 73 | } // namespace fw |
Junxiao Shi | d3c792f | 2014-01-30 00:46:13 -0700 | [diff] [blame] | 74 | } // namespace nfd |