mirror of
https://github.com/FairRootGroup/FairMQ.git
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83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/********************************************************************************
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* Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public Licence (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#include <fairmq/Device.h>
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#include <fairmq/runDevice.h>
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#include <thread>
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namespace bpo = boost::program_options;
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struct Sampler1 : fair::mq::Device
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{
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void InitTask() override
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{
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fMaxIterations = fConfig->GetProperty<uint64_t>("max-iterations");
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}
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void PreRun() override
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{
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fAckListener = std::thread(&Sampler1::ListenForAcks, this);
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}
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bool ConditionalRun() override
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{
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// Creates a message using the transport of channel data1
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fair::mq::MessagePtr msg(NewMessageFor("data1", 0, 1000000));
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// in case of error or transfer interruption, return false to go to IDLE state
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// successfull transfer will return number of bytes transfered (can be 0 if sending an empty message).
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if (Send(msg, "data1") < 0) {
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return false;
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}
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if (fMaxIterations > 0 && ++fNumIterations >= fMaxIterations) {
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LOG(info) << "Configured maximum number of iterations reached. Leaving RUNNING state.";
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return false;
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}
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return true;
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}
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void PostRun() override
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{
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fAckListener.join();
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}
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void ListenForAcks()
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{
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uint64_t numAcks = 0;
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while (!NewStatePending()) {
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fair::mq::MessagePtr ack(NewMessageFor("ack", 0));
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if (Receive(ack, "ack") < 0) {
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break;
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}
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++numAcks;
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}
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LOG(info) << "Acknowledged " << numAcks << " messages";
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}
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private:
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std::thread fAckListener;
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uint64_t fMaxIterations = 0;
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uint64_t fNumIterations = 0;
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};
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void addCustomOptions(bpo::options_description& options)
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{
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options.add_options()
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("max-iterations", bpo::value<uint64_t>()->default_value(0), "Maximum number of iterations of Run/ConditionalRun/OnData (0 - infinite)");
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}
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std::unique_ptr<fair::mq::Device> getDevice(fair::mq::ProgOptions& /*config*/)
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{
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return std::make_unique<Sampler1>();
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}
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