artdaq  v3_07_01
transfer_plugin_receiver.cc
1 #include "artdaq/TransferPlugins/TransferInterface.hh"
2 
3 #include "artdaq-core/Data/Fragment.hh"
4 #include "artdaq-core/Utilities/ExceptionHandler.hh"
5 
6 #include "cetlib/BasicPluginFactory.h"
7 #include "cetlib/filepath_maker.h"
8 #include "cetlib_except/exception.h"
9 #include "fhiclcpp/ParameterSet.h"
10 #include "fhiclcpp/make_ParameterSet.h"
11 
12 #include <boost/asio.hpp>
13 #include <boost/bind.hpp>
14 
15 #include <iostream>
16 #include <limits>
17 #include <string>
18 
19 // DUPLICATED CODE: also found in transfer_plugin_sender.cpp. Not as egregious as
20 // normal in that this function is unlikely to be changed, and this is
21 // a standalone app (not part of artdaq)
22 
23 fhicl::ParameterSet ReadParameterSet(const std::string& fhicl_filename)
24 {
25  if (std::getenv("FHICL_FILE_PATH") == nullptr)
26  {
27  std::cerr
28  << "INFO: environment variable FHICL_FILE_PATH was not set. Using \".\"\n";
29  setenv("FHICL_FILE_PATH", ".", 0);
30  }
31 
32  fhicl::ParameterSet pset;
33  cet::filepath_lookup_after1 lookup_policy("FHICL_FILE_PATH");
34  fhicl::make_ParameterSet(fhicl_filename, lookup_policy, pset);
35 
36  return pset;
37 }
38 
39 int do_check(const artdaq::Fragment& frag);
40 
41 int main(int argc, char* argv[])
42 {
43  if (argc != 2)
44  {
45  std::cerr << "Usage: transfer_plugin_receiver <fhicl document>" << std::endl;
46  return 1;
47  }
48 
49  std::string fhicl_filename = boost::lexical_cast<std::string>(argv[1]);
50 
51  std::unique_ptr<artdaq::TransferInterface> transfer;
52  auto pset = ReadParameterSet(fhicl_filename);
53 
54  try
55  {
56  static cet::BasicPluginFactory bpf("transfer", "make");
57 
58  transfer =
59  bpf.makePlugin<std::unique_ptr<artdaq::TransferInterface>,
60  const fhicl::ParameterSet&,
62  pset.get<std::string>("transfer_plugin_type"),
63  pset,
65  }
66  catch (...)
67  {
68  artdaq::ExceptionHandler(artdaq::ExceptionHandlerRethrow::yes,
69  "Error creating transfer plugin");
70  }
71 
72  while (true)
73  {
74  artdaq::Fragment myfrag;
75  size_t timeout = 10 * 1e6;
76 
77  auto retval = transfer->receiveFragment(myfrag, timeout);
78 
80  {
81  std::cout << "Returned from call to transfer_->receiveFragmentFrom; fragment with seqID == " << myfrag.sequenceID() << ", fragID == " << myfrag.fragmentID() << " has size " << myfrag.sizeBytes() << " bytes" << std::endl;
82  }
83  else
84  {
85  std::cerr << "RECV_TIMEOUT received from call to transfer->receiveFragmentFrom" << std::endl;
86  continue;
87  }
88 
89  if (do_check(myfrag) != 0)
90  {
91  std::cerr << "Error: do_check indicates fragment failed to transmit correctly" << std::endl;
92  }
93  else
94  {
95  std::cerr << "Success: do_check indicates fragment transmitted correctly" << std::endl;
96  }
97  }
98 
99  return 0;
100 }
101 
102 // JCF, Jun-22-2016
103 
104 // do_check assumes std::iota was used to fill the sent fragment with
105 // monotonically incrementing 64-bit unsigned integers
106 
107 int do_check(const artdaq::Fragment& frag)
108 {
109  uint64_t variable_to_compare = 0;
110 
111  for (auto ptr_into_frag = reinterpret_cast<const uint64_t*>(frag.dataBeginBytes());
112  ptr_into_frag != reinterpret_cast<const uint64_t*>(frag.dataEndBytes());
113  ++ptr_into_frag, ++variable_to_compare)
114  {
115  if (variable_to_compare != *ptr_into_frag)
116  {
117  std::cerr << "ERROR for fragment with sequence ID " << frag.sequenceID() << ", fragment ID " << frag.fragmentID() << ": expected ADC value of " << variable_to_compare << ", got " << *ptr_into_frag << std::endl;
118  return 1;
119  }
120  }
121 
122  return 0;
123 }
This TransferInterface is a Receiver.
Role
Used to determine if a TransferInterface is a Sender or Receiver.
For code clarity, things checking for successful receive should check retval &gt;= NO_RANK_INFO.