mirror of
https://github.com/FairRootGroup/FairMQ.git
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78 lines
2.7 KiB
C++
78 lines
2.7 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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namespace bpo = boost::program_options;
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struct Sink : fair::mq::Device
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{
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Sink()
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{
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// register a handler for data arriving on "data" channel
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OnData("data1", &Sink::HandleData1);
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OnData("data2", &Sink::HandleData2);
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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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// handler is called whenever a message arrives on "data", with a reference to the message and a sub-channel index (here 0)
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bool HandleData1(fair::mq::MessagePtr& /*msg*/, int /*index*/)
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{
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fNumIterations1++;
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// Creates a message using the transport of channel ack
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fair::mq::MessagePtr ack(NewMessageFor("ack", 0));
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if (Send(ack, "ack") < 0) {
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return false;
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}
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// return true if want to be called again (otherwise go to IDLE state)
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return CheckIterations();
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}
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// handler is called whenever a message arrives on "data", with a reference to the message and a sub-channel index (here 0)
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bool HandleData2(fair::mq::MessagePtr& /*msg*/, int /*index*/)
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{
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fNumIterations2++;
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// return true if want to be called again (otherwise go to IDLE state)
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return CheckIterations();
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}
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bool CheckIterations()
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{
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if (fMaxIterations > 0) {
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if (fNumIterations1 >= fMaxIterations && fNumIterations2 >= fMaxIterations) {
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LOG(info) << "Configured maximum number of iterations reached & Received messages from both sources. Leaving RUNNING state.";
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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 fMaxIterations = 0;
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uint64_t fNumIterations1 = 0;
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uint64_t fNumIterations2 = 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<Sink>();
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}
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