mirror of
https://github.com/FairRootGroup/FairMQ.git
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65 lines
2.1 KiB
C++
65 lines
2.1 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 <cstdint> // uint64_t
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namespace bpo = boost::program_options;
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struct Sampler : fair::mq::Device
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{
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void InitTask() override
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{
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fIterations = fConfig->GetValue<uint64_t>("iterations");
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}
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bool ConditionalRun() override
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{
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// NewSimpleMessage creates a copy of the data and takes care of its destruction (after the transfer takes place).
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// Should only be used for small data because of the cost of an additional copy
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fair::mq::MessagePtr msg(NewSimpleMessage("Data"));
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LOG(info) << "Sending \"Data\"";
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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 (fIterations > 0) {
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++fCounter;
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if (fCounter >= fIterations) {
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LOG(info) << "Sent " << fCounter << " messages. Finished.";
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return false;
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}
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}
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return true;
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}
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private:
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uint64_t fIterations = 0;
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uint64_t fCounter = 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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"iterations,i",
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bpo::value<uint64_t>()->default_value(1000),
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"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<Sampler>();
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}
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