00001 #define TRACE_NAME "RequestSender"
00002 #include "artdaq/DAQdata/Globals.hh"
00003 #include "artdaq/DAQrate/RequestSender.hh"
00004 #include <utility>
00005 #include <cstring>
00006 #include <dlfcn.h>
00007 #include <iomanip>
00008 #include <fstream>
00009 #include <sstream>
00010 #include <chrono>
00011
00012 #include "cetlib_except/exception.h"
00013 #include "artdaq-core/Core/StatisticsCollection.hh"
00014 #include "artdaq-core/Core/SimpleMemoryReader.hh"
00015 #include "artdaq/DAQrate/detail/RoutingPacket.hh"
00016 #include "artdaq/DAQdata/TCPConnect.hh"
00017
00018 namespace artdaq
00019 {
00020
00021 RequestSender::RequestSender(const fhicl::ParameterSet& pset)
00022 : send_requests_(pset.get<bool>("send_requests", false))
00023 , active_requests_()
00024 , request_port_(pset.get<int>("request_port", 3001))
00025 , request_delay_(pset.get<size_t>("request_delay_ms", 10) * 1000)
00026 , request_shutdown_timeout_us_(pset.get<size_t>("request_shutdown_timeout_us", 100000))
00027 , multicast_out_addr_(pset.get<std::string>("output_address", "0.0.0.0"))
00028 , request_mode_(detail::RequestMessageMode::Normal)
00029 , token_socket_(-1)
00030 {
00031 TLOG(TLVL_DEBUG) << "RequestSender CONSTRUCTOR" ;
00032 setup_requests_(pset.get<std::string>("request_address", "227.128.12.26"));
00033
00034 auto rmConfig = pset.get<fhicl::ParameterSet>("routing_token_config", fhicl::ParameterSet());
00035 send_routing_tokens_ = rmConfig.get<bool>("use_routing_master", false);
00036 token_port_ = rmConfig.get<int>("routing_token_port", 35555);
00037 token_address_ = rmConfig.get<std::string>("routing_master_hostname", "localhost");
00038 setup_tokens_();
00039 TLOG(12) << "artdaq::RequestSender::RequestSender ctor - reader_thread_ initialized";
00040 }
00041
00042
00043 RequestSender::~RequestSender()
00044 {
00045 TLOG(TLVL_TRACE) << "Shutting down RequestSender: Waiting for requests to be sent" ;
00046
00047 auto start_time = std::chrono::steady_clock::now();
00048
00049 while (request_sending_ && request_shutdown_timeout_us_ > TimeUtils::GetElapsedTimeMicroseconds(start_time))
00050 {
00051 usleep(1000);
00052 }
00053 TLOG(TLVL_TRACE) << "Shutting down RequestSender" ;
00054 if (request_socket_ > 0)
00055 {
00056 shutdown(request_socket_, 2);
00057 close(request_socket_);
00058 }
00059 if (token_socket_ > 0)
00060 {
00061 shutdown(token_socket_, 2);
00062 close(token_socket_);
00063 }
00064 }
00065
00066
00067 void RequestSender::SetRequestMode(detail::RequestMessageMode mode)
00068 {
00069 request_mode_ = mode;
00070 SendRequest(true);
00071 }
00072
00073 void
00074 RequestSender::setup_requests_(std::string request_address)
00075 {
00076 if (send_requests_)
00077 {
00078 request_socket_ = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
00079 if (request_socket_ < 0)
00080 {
00081 TLOG(TLVL_ERROR) << "I failed to create the socket for sending Data Requests! err=" << strerror(errno) ;
00082 exit(1);
00083 }
00084 int sts = ResolveHost(request_address.c_str(), request_port_, request_addr_);
00085 if (sts == -1)
00086 {
00087 TLOG(TLVL_ERROR) << "Unable to resolve Data Request address, err=" << strerror(errno) ;
00088 exit(1);
00089 }
00090
00091 if (multicast_out_addr_ == "0.0.0.0")
00092 {
00093 multicast_out_addr_.reserve(HOST_NAME_MAX);
00094 sts = gethostname(&multicast_out_addr_[0], HOST_NAME_MAX);
00095 if (sts < 0)
00096 {
00097 TLOG(TLVL_ERROR) << "Could not get current hostname, err=" << strerror(errno) ;
00098 exit(1);
00099 }
00100 }
00101
00102 if (multicast_out_addr_ != "localhost")
00103 {
00104 struct in_addr addr;
00105 sts = ResolveHost(multicast_out_addr_.c_str(), addr);
00106 if (sts == -1)
00107 {
00108 TLOG(TLVL_ERROR) << "Unable to resolve multicast interface address, err=" << strerror(errno) ;
00109 exit(1);
00110 }
00111
00112 int yes = 1;
00113 if (setsockopt(request_socket_, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0)
00114 {
00115 TLOG(TLVL_ERROR) << "Unable to enable port reuse on request socket, err=" << strerror(errno) ;
00116 exit(1);
00117 }
00118 if (setsockopt(request_socket_, IPPROTO_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0)
00119 {
00120 TLOG(TLVL_ERROR) << "Unable to enable multicast loopback on request socket, err=" << strerror(errno) ;
00121 exit(1);
00122 }
00123 if (setsockopt(request_socket_, IPPROTO_IP, IP_MULTICAST_IF, &addr, sizeof(addr)) == -1)
00124 {
00125 TLOG(TLVL_ERROR) << "Cannot set outgoing interface, err=" << strerror(errno) ;
00126 exit(1);
00127 }
00128 }
00129 int yes = 1;
00130 if (setsockopt(request_socket_, SOL_SOCKET, SO_BROADCAST, (void*)&yes, sizeof(int)) == -1)
00131 {
00132 TLOG(TLVL_ERROR) << "Cannot set request socket to broadcast, err=" << strerror(errno) ;
00133 exit(1);
00134 }
00135 }
00136 }
00137
00138 void
00139 RequestSender::setup_tokens_()
00140 {
00141 if (send_routing_tokens_)
00142 {
00143 TLOG(TLVL_DEBUG) << "Creating Routing Token sending socket" ;
00144 int retry = 5;
00145 while (retry > 0 && token_socket_ < 0) {
00146 token_socket_ = TCPConnect(token_address_.c_str(), token_port_);
00147 if (token_socket_ < 0) usleep(100000);
00148 retry--;
00149 }
00150 if (token_socket_ < 0)
00151 {
00152 TLOG(TLVL_ERROR) << "I failed to create the socket for sending Routing Tokens! err=" << strerror(errno) ;
00153 exit(1);
00154 }
00155 TLOG(TLVL_DEBUG) << "Routing Token sending socket created successfully" ;
00156 }
00157 }
00158
00159 void RequestSender::do_send_request_()
00160 {
00161 if (!send_requests_) return;
00162 TLOG(TLVL_TRACE) << "Waiting for " << request_delay_ << " microseconds." ;
00163 std::this_thread::sleep_for(std::chrono::microseconds(request_delay_));
00164
00165 TLOG(TLVL_TRACE) << "Creating RequestMessage" ;
00166 detail::RequestMessage message;
00167 {
00168 std::lock_guard<std::mutex> lk(request_mutex_);
00169 for (auto& req : active_requests_)
00170 {
00171 TLOG(12, "RequestSender") << "Adding a request with sequence ID " << req.first << ", timestamp " << req.second;
00172 message.addRequest(req.first, req.second);
00173 }
00174 }
00175 TLOG(TLVL_TRACE) << "Setting mode flag in Message Header" ;
00176 message.header()->mode = request_mode_;
00177 char str[INET_ADDRSTRLEN];
00178 inet_ntop(AF_INET, &(request_addr_.sin_addr), str, INET_ADDRSTRLEN);
00179 std::lock_guard<std::mutex> lk2(request_send_mutex_);
00180 TLOG(TLVL_TRACE) << "Sending request for " << std::to_string(message.size()) << " events to multicast group " << str ;
00181 if (sendto(request_socket_, message.header(), sizeof(detail::RequestHeader), 0, (struct sockaddr *)&request_addr_, sizeof(request_addr_)) < 0)
00182 {
00183 TLOG(TLVL_ERROR) << "Error sending request message header err=" << strerror(errno) ;
00184 }
00185 if (sendto(request_socket_, message.buffer(), sizeof(detail::RequestPacket) * message.size(), 0, (struct sockaddr *)&request_addr_, sizeof(request_addr_)) < 0)
00186 {
00187 TLOG(TLVL_ERROR) << "Error sending request message data err=" << strerror(errno) ;
00188 }
00189 request_sending_ = false;
00190 }
00191
00192 void RequestSender::send_routing_token_(int nSlots)
00193 {
00194 TLOG(TLVL_TRACE) << "send_routing_token_ called, send_routing_tokens_=" << std::boolalpha << send_routing_tokens_ ;
00195 if (!send_routing_tokens_) return;
00196 if (token_socket_ == -1) setup_tokens_();
00197 detail::RoutingToken token;
00198 token.header = TOKEN_MAGIC;
00199 token.rank = my_rank;
00200 token.new_slots_free = nSlots;
00201
00202 TLOG(TLVL_TRACE) << "Sending RoutingToken to " << token_address_ << ":" << token_port_ ;
00203 size_t sts = 0;
00204 while (sts < sizeof(detail::RoutingToken))
00205 {
00206 auto res = send(token_socket_, reinterpret_cast<uint8_t*>(&token) + sts, sizeof(detail::RoutingToken) - sts, 0);
00207 if (res == -1)
00208 {
00209 usleep(1000);
00210 continue;
00211 }
00212 sts += res;
00213 }
00214 TLOG(TLVL_TRACE) << "Done sending RoutingToken to " << token_address_ << ":" << token_port_ ;
00215 }
00216
00217 void RequestSender::SendRoutingToken(int nSlots)
00218 {
00219 if (!send_routing_tokens_) return;
00220 boost::thread token([=] {send_routing_token_(nSlots); });
00221 token.detach();
00222 usleep(0);
00223 }
00224
00225 void RequestSender::SendRequest(bool endOfRunOnly)
00226 {
00227 if (!send_requests_) return;
00228 if (endOfRunOnly && request_mode_ != detail::RequestMessageMode::EndOfRun) return;
00229 request_sending_ = true;
00230 boost::thread request([=] { do_send_request_(); });
00231 request.detach();
00232 }
00233
00234 void RequestSender::AddRequest(Fragment::sequence_id_t seqID, Fragment::timestamp_t timestamp)
00235 {
00236 {
00237 std::lock_guard<std::mutex> lk(request_mutex_);
00238 if (!active_requests_.count(seqID)) active_requests_[seqID] = timestamp;
00239 }
00240 SendRequest();
00241 }
00242
00243 void RequestSender::RemoveRequest(Fragment::sequence_id_t seqID)
00244 {
00245 std::lock_guard<std::mutex> lk(request_mutex_);
00246 active_requests_.erase(seqID);
00247 }
00248 }