chunks: segmented file transfer
refs #3071
Change-Id: I88e4fc1a8e33a0d61a95e2291cccc7b998647489
diff --git a/tools/chunks/putchunks/producer.cpp b/tools/chunks/putchunks/producer.cpp
new file mode 100644
index 0000000..141be5b
--- /dev/null
+++ b/tools/chunks/putchunks/producer.cpp
@@ -0,0 +1,157 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2016, Regents of the University of California,
+ * Colorado State University,
+ * University Pierre & Marie Curie, Sorbonne University.
+ *
+ * This file is part of ndn-tools (Named Data Networking Essential Tools).
+ * See AUTHORS.md for complete list of ndn-tools authors and contributors.
+ *
+ * ndn-tools is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-tools 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * ndn-tools, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ *
+ * @author Wentao Shang
+ * @author Steve DiBenedetto
+ * @author Andrea Tosatto
+ */
+
+#include "producer.hpp"
+
+namespace ndn {
+namespace chunks {
+
+Producer::Producer(const Name& prefix,
+ Face& face,
+ KeyChain& keyChain,
+ const security::SigningInfo& signingInfo,
+ time::milliseconds freshnessPeriod,
+ size_t maxSegmentSize,
+ bool isVerbose,
+ bool needToPrintVersion,
+ std::istream& is)
+ : m_face(face)
+ , m_keyChain(keyChain)
+ , m_signingInfo(signingInfo)
+ , m_freshnessPeriod(freshnessPeriod)
+ , m_maxSegmentSize(maxSegmentSize)
+ , m_isVerbose(isVerbose)
+{
+ if (prefix.size() > 0 && prefix[-1].isVersion()) {
+ m_prefix = prefix.getPrefix(-1);
+ m_versionedPrefix = prefix;
+ }
+ else {
+ m_prefix = prefix;
+ m_versionedPrefix = Name(m_prefix).appendVersion();
+ }
+
+ populateStore(is);
+
+ if (needToPrintVersion)
+ std::cout << m_versionedPrefix[-1] << std::endl;
+
+ m_face.setInterestFilter(m_prefix,
+ bind(&Producer::onInterest, this, _2),
+ RegisterPrefixSuccessCallback(),
+ bind(&Producer::onRegisterFailed, this, _1, _2));
+
+ if (m_isVerbose)
+ std::cerr << "Data published with name: " << m_versionedPrefix << std::endl;
+}
+
+void
+Producer::run()
+{
+ m_face.processEvents();
+}
+
+void
+Producer::onInterest(const Interest& interest)
+{
+ BOOST_ASSERT(m_store.size() > 0);
+
+ if (m_isVerbose)
+ std::cerr << "Interest: " << interest << std::endl;
+
+ const Name& name = interest.getName();
+ shared_ptr<Data> data;
+
+ // is this a discovery Interest or a sequence retrieval?
+ if (name.size() == m_versionedPrefix.size() + 1 && m_versionedPrefix.isPrefixOf(name) &&
+ name[-1].isSegment()) {
+ const auto segmentNo = static_cast<size_t>(interest.getName()[-1].toSegment());
+ // specific segment retrieval
+ if (segmentNo < m_store.size()) {
+ data = m_store[segmentNo];
+ }
+ }
+ else if (interest.matchesData(*m_store[0])) {
+ // Interest has version and is looking for the first segment or has no version
+ data = m_store[0];
+ }
+
+ if (data != nullptr) {
+ if (m_isVerbose)
+ std::cerr << "Data: " << *data << std::endl;
+
+ m_face.put(*data);
+ }
+}
+
+void
+Producer::populateStore(std::istream& is)
+{
+ BOOST_ASSERT(m_store.size() == 0);
+
+ if (m_isVerbose)
+ std::cerr << "Loading input ..." << std::endl;
+
+ std::vector<uint8_t> buffer(m_maxSegmentSize);
+ while (is.good()) {
+ is.read(reinterpret_cast<char*>(buffer.data()), buffer.size());
+ const auto nCharsRead = is.gcount();
+ if (nCharsRead > 0) {
+ auto data = make_shared<Data>(Name(m_versionedPrefix).appendSegment(m_store.size()));
+ data->setFreshnessPeriod(m_freshnessPeriod);
+ data->setContent(&buffer[0], nCharsRead);
+
+ m_store.push_back(data);
+ }
+ }
+
+ if (m_store.empty()) {
+ auto data = make_shared<Data>(Name(m_versionedPrefix).appendSegment(0));
+ data->setFreshnessPeriod(m_freshnessPeriod);
+ m_store.push_back(data);
+ }
+
+ auto finalBlockId = name::Component::fromSegment(m_store.size() - 1);
+ for (const auto& data : m_store) {
+ data->setFinalBlockId(finalBlockId);
+ m_keyChain.sign(*data, m_signingInfo);
+ }
+
+ if (m_isVerbose)
+ std::cerr << "Created " << m_store.size() << " chunks for prefix " << m_prefix << std::endl;
+}
+
+void
+Producer::onRegisterFailed(const Name& prefix, const std::string& reason)
+{
+ std::cerr << "ERROR: Failed to register prefix '"
+ << prefix << "' (" << reason << ")" << std::endl;
+ m_face.shutdown();
+}
+
+} // namespace chunks
+} // namespace ndn