10 #include "art/Framework/Core/EDFilter.h"
11 #include "art/Framework/Core/ModuleMacros.h"
12 #include "art/Framework/Principal/Event.h"
13 #include "art/Framework/Principal/Handle.h"
14 #include "art/Framework/Principal/Run.h"
15 #include "art/Framework/Principal/SubRun.h"
16 #include "canvas/Utilities/InputTag.h"
17 #include "fhiclcpp/ParameterSet.h"
19 #include "artdaq/DAQdata/Globals.hh"
27 class RandomDelayFilter;
87 bool filter(art::Event& e)
override;
101 std::mt19937 engine_;
102 std::unique_ptr<std::uniform_real_distribution<double>> uniform_distn_;
103 std::unique_ptr<std::normal_distribution<double>> normal_distn_;
104 std::unique_ptr<std::uniform_int_distribution<int>> pass_distn_;
109 : min_ms_(p.get<double>(
"minimum_delay_ms", 0))
110 , max_ms_(p.get<double>(
"maximum_delay_ms", 1000))
111 , mean_ms_(p.get<double>(
"mean_delay_ms", 500))
112 , sigma_ms_(p.get<double>(
"sigma_delay_ms", 100))
113 , pass_factor_(p.get<int>(
"pass_filter_percentage", 100))
114 , load_factor_(p.get<double>(
"cpu_load_ratio", 1.0))
115 , isNormal_(p.get<bool>(
"use_normal_distribution", false))
116 , engine_(p.get<int64_t>(
"random_seed", 271828))
117 , pass_distn_(new std::uniform_int_distribution<int>(0, 100))
120 if (pass_factor_ > 100) pass_factor_ = 100;
121 if (pass_factor_ < 0) pass_factor_ = 0;
122 if (load_factor_ < 0.0) load_factor_ = 0.0;
123 if (load_factor_ > 1.0) load_factor_ = 1.0;
125 if (min_ms_ < 0) min_ms_ = 0;
126 if (min_ms_ > max_ms_) max_ms_ = min_ms_;
127 if (mean_ms_ < 0) mean_ms_ = 0;
128 if (sigma_ms_ < 0) sigma_ms_ = 0;
130 uniform_distn_.reset(
new std::uniform_real_distribution<double>(min_ms_, max_ms_));
131 normal_distn_.reset(
new std::normal_distribution<double>(mean_ms_, sigma_ms_));
136 double delay = isNormal_ ? (*normal_distn_)(engine_) : (*uniform_distn_)(engine_);
137 TLOG_DEBUG(
"RandomDelayFilter") <<
"Simulating processing of event " << e.event() <<
" by delaying " << std::to_string(delay) <<
"ms." << TLOG_ENDL;
139 usleep(1000 * (1 - load_factor_) * delay);
142 auto now = std::chrono::steady_clock::now();
143 while (TimeUtils::GetElapsedTimeMilliseconds(now) < static_cast<size_t>(delay * load_factor_))
145 i = i + 1 % std::numeric_limits<int>::max();
148 return (*pass_distn_)(engine_) < pass_factor_;
RandomDelayFilter(fhicl::ParameterSet const &p)
RandomDelayFilter Constructor.
bool filter(art::Event &e) override
Filter is a required override of art::EDFilter, and is called for each event.
A filter which delays for a random amount of time, then drops a random fraction of events...
RandomDelayFilter & operator=(RandomDelayFilter const &)=delete
Copy Assignment operator is deleted.