00001 #include "artdaq-ots/Generators/UDPReceiver.hh"
00002
00003 #include "canvas/Utilities/Exception.h"
00004 #include "artdaq/Application/GeneratorMacros.hh"
00005 #include "cetlib/exception.h"
00006 #include "fhiclcpp/ParameterSet.h"
00007 #include "artdaq-core/Utilities/SimpleLookupPolicy.hh"
00008 #include "artdaq-ots/Overlays/UDPFragmentWriter.hh"
00009 #include "artdaq-ots/Overlays/FragmentType.hh"
00010 #include "otsdaq-core/Macros/CoutHeaderMacros.h"
00011
00012
00013 #include <fstream>
00014 #include <iomanip>
00015 #include <iterator>
00016 #include <iostream>
00017 #include <sys/poll.h>
00018
00019 ots::UDPReceiver::UDPReceiver(fhicl::ParameterSet const & ps)
00020 : CommandableFragmentGenerator(ps)
00021 , rawOutput_(ps.get<bool>("raw_output_enabled",false))
00022 , rawPath_(ps.get<std::string>("raw_output_path", "/tmp"))
00023 , dataport_(ps.get<int>("port",6343))
00024 , ip_(ps.get<std::string>("ip","127.0.0.1"))
00025 , expectedPacketNumber_(0)
00026 , sendCommands_(ps.get<bool>("send_OtsUDP_commands",false))
00027 , fragmentWindow_(ps.get<double>("fragment_time_window_ms", 1000))
00028 , lastFrag_(std::chrono::high_resolution_clock::now())
00029 {
00030 datasocket_ = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
00031 if(!datasocket_)
00032 {
00033 throw art::Exception(art::errors::Configuration) << "UDPReceiver: Error creating socket!" << std::endl;
00034 exit(1);
00035 }
00036
00037 struct sockaddr_in si_me_data;
00038 si_me_data.sin_family = AF_INET;
00039 si_me_data.sin_port = htons(dataport_);
00040 si_me_data.sin_addr.s_addr = htonl(INADDR_ANY);
00041 if(bind(datasocket_, (struct sockaddr *)&si_me_data, sizeof(si_me_data)) == -1)
00042 {
00043 throw art::Exception(art::errors::Configuration) <<
00044 "UDPReceiver: Cannot bind data socket to port " << dataport_ << std::endl;
00045 exit(1);
00046 }
00047
00048 si_data_.sin_family = AF_INET;
00049 si_data_.sin_port = htons(dataport_);
00050 if(inet_aton(ip_.c_str(), &si_data_.sin_addr) == 0)
00051 {
00052 throw art::Exception(art::errors::Configuration) <<
00053 "UDPReceiver: Could not translate provided IP Address: " << ip_ << "\n";
00054 exit(1);
00055 }
00056 mf::LogInfo("UDPReceiver") << "UDP Receiver Construction Complete!" << std::endl;
00057 }
00058
00059 ots::UDPReceiver::~UDPReceiver()
00060 {
00061 receiverThread_.join();
00062 }
00063
00064 void ots::UDPReceiver::start() {
00065
00066
00067 std::cout << __COUT_HDR_FL__ << "Start." << std::endl;
00068 mf::LogInfo("UDPReceiver") << "Starting..." << std::endl;
00069
00070 receiverThread_ = std::thread(&UDPReceiver::receiveLoop_,this);
00071 }
00072
00073 void ots::UDPReceiver::receiveLoop_() {
00074
00075 uint8_t droppedPackets = 0;
00076 while(!should_stop()) {
00077 struct pollfd ufds[1];
00078 ufds[0].fd = datasocket_;
00079 ufds[0].events = POLLIN | POLLPRI;
00080
00081 int rv = poll(ufds, 1, 1000);
00082 if(rv > 0)
00083 {
00084 std::cout << __COUT_HDR_FL__ << "revents: " << ufds[0].revents << ", " << std::endl;
00085 if(ufds[0].revents == POLLIN || ufds[0].revents == POLLPRI)
00086 {
00087
00088
00089
00090
00091 uint32_t peekBuffer[6];
00092 recvfrom(datasocket_, peekBuffer, sizeof(peekBuffer), MSG_PEEK,
00093 (struct sockaddr *) &si_data_, (socklen_t*)sizeof(si_data_));
00094
00095 mf::LogInfo("UDPReceiver") << "Received UDP Packet with sequence number " << std::hex << "0x" << (int)peekBuffer[1] << "!" << std::dec;
00096 std::cout << __COUT_HDR_FL__ << "peekBuffer[1] == expectedPacketNumber_: " << std::hex << (int)peekBuffer[1] << " =?= " << (int)expectedPacketNumber_ << std::endl;
00097
00098 uint32_t seqNum = peekBuffer[5];
00099
00100 if(seqNum >= expectedPacketNumber_ || (seqNum < 10 && expectedPacketNumber_ > 240) || droppedPackets > 0 || expectedPacketNumber_ - seqNum > 20)
00101 {
00102 if(seqNum != expectedPacketNumber_ && (seqNum >= expectedPacketNumber_ || (seqNum < 10 && expectedPacketNumber_ > 200)))
00103 {
00104 int deltaHi = seqNum - expectedPacketNumber_;
00105 int deltaLo = 4294967295 + seqNum - expectedPacketNumber_;
00106 droppedPackets += deltaLo;
00107 mf::LogWarning("UDPReceiver") << "Dropped/Delayed packets detected: " << std::dec << std::to_string(droppedPackets);
00108 expectedPacketNumber_ = seqNum;
00109 } else if (seqNum != expectedPacketNumber_) {
00110 int delta = expectedPacketNumber_ - seqNum;
00111 mf::LogWarning("UDPReceiver") << std::dec << "Sequence Number significantly different than expected! (delta: " << delta << ")";
00112 }
00113
00114 packetBuffer_t* buffer = new packetBuffer_t();
00115 memset(&((*buffer).at(0)),0,sizeof(packetBuffer_t));
00116 int DJN= recvfrom(datasocket_, &(*buffer).at(0), sizeof(packetBuffer_t), 0,(struct sockaddr *) &si_data_, (socklen_t*)sizeof(si_data_));
00117 mf::LogInfo("DJN UDPReceiver") << "UDP packet recvfrom got Nbytes=" << (int)DJN << " into buffer.";
00118
00119 if(droppedPackets == 0) {
00120 std::lock_guard<std::mutex> lock(receiveBufferLock_);
00121 receiveBuffers_.emplace_back(std::unique_ptr<packetBuffer_t>(buffer));
00122 }
00123 else {
00124 bool found = false;
00125 for(packetBuffer_list_t::reverse_iterator it = packetBuffers_.rbegin(); it != packetBuffers_.rend(); ++it) {
00126 if(seqNum < (*it)->at(1)) {
00127 std::lock_guard<std::mutex> lock(receiveBufferLock_);
00128 receiveBuffers_.emplace(it.base(), std::unique_ptr<packetBuffer_t>(buffer));
00129 droppedPackets--;
00130 expectedPacketNumber_--;
00131 found = true;
00132 }
00133 }
00134 if(!found) {
00135 std::lock_guard<std::mutex> lock(receiveBufferLock_);
00136 receiveBuffers_.emplace_back(std::unique_ptr<packetBuffer_t>(buffer));
00137 }
00138 }
00139 mf::LogInfo("UDPReceiver") << "Now placing UDP packet with sequence number " << std::hex << (int)seqNum << " into buffer." << std::dec;
00140 }
00141
00142 ++expectedPacketNumber_;
00143 }
00144 }
00145 std::cout << __COUT_HDR_FL__ << "waiting..." << std::endl;
00146
00147 }
00148 mf::LogInfo("UDPReceiver") << "receive Loop exiting..." << std::endl;
00149 }
00150
00151 bool ots::UDPReceiver::getNext_(artdaq::FragmentPtrs & output)
00152 {
00153 if (should_stop()) {
00154 return false;
00155 }
00156
00157 while(receiveBuffers_.size() == 0 && isTimerExpired_()) { usleep(1000); }
00158
00159 {
00160 std::lock_guard<std::mutex> lock(receiveBufferLock_);
00161 std::move(receiveBuffers_.begin(), receiveBuffers_.end(), std::inserter(packetBuffers_,packetBuffers_.end()));
00162 receiveBuffers_.clear();
00163 }
00164 mf::LogInfo("UDPReceiver") << "Calling ProcessData";
00165 ProcessData_(output);
00166
00167 mf::LogInfo("UDPReceiver") << "Returning output of size " << output.size() << " to TriggeredFragmentGenerator";
00168 return true;
00169 }
00170
00171 void ots::UDPReceiver::ProcessData_(artdaq::FragmentPtrs & output) {
00172
00173 ots::UDPFragment::Metadata metadata;
00174 metadata.port = dataport_;
00175 metadata.address = si_data_.sin_addr.s_addr;
00176
00177 std::size_t initial_payload_size = 0;
00178
00179 output.emplace_back( artdaq::Fragment::FragmentBytes(initial_payload_size,
00180 ev_counter(), fragment_id(),
00181 ots::detail::FragmentType::UDP, metadata) );
00182
00183 ots::UDPFragmentWriter thisFrag(*output.back());
00184
00185 std::cout << __COUT_HDR_FL__ << "Received data, now placing data with UDP sequence number "
00186 << std::hex << static_cast<int>((*packetBuffers_.front()).at(1))
00187 << " into UDPFragment" << std::endl;
00188 thisFrag.resize(64050 * packetBuffers_.size() + 1);
00189 std::ofstream rawOutput;
00190 if(rawOutput_) {
00191 std::string outputPath = rawPath_ + "/UDPReceiver-"+ ip_ + ":" + std::to_string(dataport_) + ".bin";
00192 rawOutput.open(outputPath, std::ios::out | std::ios::app | std::ios::binary );
00193 }
00194
00195 DataType dataType = getDataType((*packetBuffers_.front()).at(0));
00196 thisFrag.set_hdr_type((int)dataType);
00197 int pos = 0;
00198 for(auto jj = packetBuffers_.begin(); jj != packetBuffers_.end(); ++jj) {
00199 for(int ii = 0; ii < 64050; ++ii) {
00200
00201 if((*jj)->at(ii) == 0 && (dataType == DataType::JSON || dataType == DataType::String)) { break; }
00202
00203 if(rawOutput_) rawOutput.write((char*)&((*jj)->at(ii)), sizeof(uint8_t));
00204 *(thisFrag.dataBegin() + pos) = (*jj)->at(ii);
00205 ++pos;
00206 }
00207 }
00208 packetBuffers_.clear();
00209
00210 if(dataType == DataType::JSON || dataType == DataType::String) {
00211 *(thisFrag.dataBegin() + pos) = 0;
00212 char zero =0;
00213 if(rawOutput_) rawOutput.write(&zero, sizeof(char));
00214 }
00215 if(rawOutput_) rawOutput.close();
00216 }
00217
00218 void ots::UDPReceiver::send(CommandType command)
00219 {
00220 if(sendCommands_) {
00221 CommandPacket packet;
00222 packet.type = command;
00223 packet.dataSize = 0;
00224 sendto(datasocket_,&packet,sizeof(packet),0, (struct sockaddr *) &si_data_, sizeof(si_data_));
00225 }
00226 }
00227
00228 bool ots::UDPReceiver::isTimerExpired_()
00229 {
00230 auto now = std::chrono::high_resolution_clock::now();
00231 auto diff = std::chrono::duration<double, std::milli>(now - lastFrag_).count();
00232 return diff > fragmentWindow_;
00233 }
00234
00235 void ots::UDPReceiver::stop()
00236 {
00237 #pragma message "Using default implementation of UDPReceiver::stop()"
00238 }
00239
00240 void ots::UDPReceiver::stopNoMutex()
00241 {
00242 #pragma message "Using default implementation of UDPReceiver::stopNoMutex()"
00243 }
00244
00245
00246 DEFINE_ARTDAQ_COMMANDABLE_GENERATOR(ots::UDPReceiver)