Davide Pesavento
111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2014-2023, The University of Memphis
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*
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* This file is part of PSync.
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* See AUTHORS.md for complete list of PSync authors and contributors.
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*
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* PSync is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser 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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* PSync 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License along with
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* PSync, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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**/
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#include <PSync/partial-producer.hpp>
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#include <ndn-cxx/face.hpp>
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#include <ndn-cxx/security/key-chain.hpp>
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#include <ndn-cxx/util/logger.hpp>
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#include <ndn-cxx/util/random.hpp>
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#include <ndn-cxx/util/scheduler.hpp>
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#include <iostream>
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NDN_LOG_INIT(examples.PartialSyncProducerApp);
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class PSyncPartialProducer
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{
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public:
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/**
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* @brief Initialize producer and schedule updates
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*
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* IBF size is set to 40 in m_producer as the expected number of update to IBF in a sync cycle
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*/
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PSyncPartialProducer(const ndn::Name& syncPrefix, const std::string& userPrefix,
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int numDataStreams, int maxNumPublish)
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: m_producer(m_face, m_keyChain, 40, syncPrefix, userPrefix + "-0")
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, m_maxNumPublish(maxNumPublish)
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{
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// Add user prefixes and schedule updates for them
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for (int i = 0; i < numDataStreams; i++) {
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ndn::Name updateName(userPrefix + "-" + std::to_string(i));
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// Add the user prefix to the producer
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// Note that this does not add the already added userPrefix-0 in the constructor
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m_producer.addUserNode(updateName);
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// Each user prefix is updated at a random interval between 0 and 60 seconds
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m_scheduler.schedule(ndn::time::milliseconds(m_uniformRand(m_rng)),
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[this, updateName] { doUpdate(updateName); });
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}
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}
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void
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run()
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{
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m_face.processEvents();
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}
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private:
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void
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doUpdate(const ndn::Name& updateName)
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{
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// Publish an update to this user prefix
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m_producer.publishName(updateName);
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uint64_t seqNo = m_producer.getSeqNo(updateName).value();
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NDN_LOG_INFO("Publish: " << updateName << "/" << seqNo);
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if (seqNo < m_maxNumPublish) {
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// Schedule the next update for this user prefix between 0 and 60 seconds
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m_scheduler.schedule(ndn::time::milliseconds(m_uniformRand(m_rng)),
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[this, updateName] { doUpdate(updateName); });
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}
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}
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private:
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ndn::Face m_face;
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ndn::KeyChain m_keyChain;
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ndn::Scheduler m_scheduler{m_face.getIoContext()};
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psync::PartialProducer m_producer;
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uint64_t m_maxNumPublish;
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ndn::random::RandomNumberEngine& m_rng{ndn::random::getRandomNumberEngine()};
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std::uniform_int_distribution<> m_uniformRand{0, 60000};
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};
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int
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main(int argc, char* argv[])
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{
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if (argc != 5) {
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std::cerr << "Usage: " << argv[0] << " <sync-prefix> <user-prefix> "
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<< "<number-of-user-prefixes> <max-number-of-updates-per-user-prefix>\n";
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return 1;
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}
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try {
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PSyncPartialProducer producer(argv[1], argv[2], std::stoi(argv[3]), std::stoi(argv[4]));
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producer.run();
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}
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catch (const std::exception& e) {
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NDN_LOG_ERROR(e.what());
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}
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}
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