blob: 8ae511f4f7eb0505d9099d2a71686e5ae88e7ae9 [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2016 Regents of the University of California.
*
* This file is part of the nTorrent codebase.
*
* nTorrent is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* nTorrent is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with nTorrent, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of nTorrent authors and contributors.
*/
#include "sequential-data-fetcher.hpp"
#include "torrent-file.hpp"
#include "util/io-util.hpp"
#include <iostream>
#include <iterator>
#include <stdexcept>
#include <algorithm>
#include <boost/program_options.hpp>
#include <boost/program_options/errors.hpp>
namespace po = boost::program_options;
using namespace ndn::ntorrent;
namespace ndn {
class Error : public std::runtime_error
{
public:
explicit
Error(const std::string& what)
: runtime_error(what)
{
}
};
} // end ndn
// TODO(msweatt) Add options verification
int main(int argc, char *argv[])
{
try {
po::options_description desc("Allowed options");
desc.add_options()
// TODO(msweatt) Consider adding flagged args for other parameters
("help,h", "produce help message")
("generate,g" , "-g <data directory> <output-path>? <names-per-segment>? <names-per-manifest-segment>? <data-packet-size>?")
("seed,s", "After download completes, continue to seed")
("args", po::value<std::vector<std::string> >(), "For arguments you want to specify without flags")
;
po::positional_options_description p;
p.add("args", -1);
po::variables_map vm;
po::store(po::command_line_parser(argc, argv).
options(desc).allow_unregistered().positional(p).run(), vm);
po::notify(vm);
if (vm.count("help")) {
std::cout << desc << std::endl;
return 1;
}
// if generate mode
if (vm.count("generate") && vm.count("args")) {
auto args = vm["args"].as<std::vector<std::string>>();
if (args.size() < 1 || args.size() > 5) {
throw ndn::Error("wrong number of arguments for generate");
}
auto dataPath = args[0];
auto outputPath = args.size() >= 2 ? args[1] : ".appdata/";
auto namesPerSegment = args.size() >= 3 ? boost::lexical_cast<size_t>(args[2]) : 1024;
auto namesPerManifest = args.size() >= 4 ? boost::lexical_cast<size_t>(args[3]) : 1024;
auto dataPacketSize = args.size() == 5 ? boost::lexical_cast<size_t>(args[4]) : 1024;
const auto& content = TorrentFile::generate(dataPath,
namesPerSegment,
namesPerManifest,
dataPacketSize);
const auto& torrentSegments = content.first;
std::vector<FileManifest> manifests;
for (const auto& ms : content.second) {
manifests.insert(manifests.end(), ms.first.begin(), ms.first.end());
}
auto torrentPrefix = fs::canonical(dataPath).filename().string();
outputPath += torrentPrefix;
auto torrentPath = outputPath + "/torrent_files/";
// write all the torrent segments
for (const TorrentFile& t : torrentSegments) {
if (!IoUtil::writeTorrentSegment(t, torrentPath)) {
std::cerr << "Write failed: " << t.getName() << std::endl;
return -1;
}
}
auto manifestPath = outputPath + "/manifests/";
for (const FileManifest& m : manifests) {
if (!IoUtil::writeFileManifest(m, manifestPath)) {
std::cerr << "Write failed: " << m.getName() << std::endl;
return -1;
}
}
}
// otherwise we are in torrent mode if we have the required args, start the sequential fetcher
else if (vm.count("args")) {
// <torrent-file-name> <data-path>
auto args = vm["args"].as<std::vector<std::string>>();
if (args.size() != 2) {
throw ndn::Error("wrong number of arguments for generate");
}
auto torrentName = args[0];
auto dataPath = args[1];
SequentialDataFetcher fetcher(torrentName, dataPath);
// download all the code
fetcher.start();
std::cout << torrentName << " done" << std::endl;
if (vm.count("seed")) {
fetcher.seed();
}
}
else {
std::cout << desc << std::endl;
return 1;
}
}
catch(std::exception& e) {
std::cerr << "error: " << e.what() << "\n";
return 1;
}
catch(...) {
std::cerr << "Exception of unknown type!\n";
}
return 0;
}