Refactor the examples after move from FairRoot

examples/multiple-channels/Sampler.cxx

@@ -0,0 +1,82 @@
+/********************************************************************************
+ *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             *
+ *              GNU Lesser General Public Licence (LGPL) version 3,             *
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+/**
+ * Sampler.cpp
+ *
+ * @since 2014-10-10
+ * @author A. Rybalchenko
+ */
+
+#include <memory> // unique_ptr
+#include <thread> // this_thread::sleep_for
+#include <chrono>
+
+#include "Sampler.h"
+#include "FairMQPoller.h"
+
+using namespace std;
+
+namespace example_multiple_channels
+{
+
+Sampler::Sampler()
+    : fText()
+    , fMaxIterations(0)
+    , fNumIterations(0)
+{
+}
+
+void Sampler::InitTask()
+{
+    fText = fConfig->GetValue<string>("text");
+    fMaxIterations = fConfig->GetValue<uint64_t>("max-iterations");
+}
+
+void Sampler::Run()
+{
+    FairMQPollerPtr poller(NewPoller("data", "broadcast"));
+
+    while (CheckCurrentState(RUNNING))
+    {
+        poller->Poll(100);
+
+        if (poller->CheckInput("broadcast", 0))
+        {
+            FairMQMessagePtr msg(NewMessage());
+
+            if (Receive(msg, "broadcast") > 0)
+            {
+                LOG(info) << "Received broadcast: \"" << string(static_cast<char*>(msg->GetData()), msg->GetSize()) << "\"";
+            }
+        }
+
+        if (poller->CheckOutput("data", 0))
+        {
+            this_thread::sleep_for(chrono::seconds(1));
+
+            FairMQMessagePtr msg(NewSimpleMessage(fText));
+
+            if (Send(msg, "data") > 0)
+            {
+                LOG(info) << "Sent \"" << fText << "\"";
+
+                if (fMaxIterations > 0 && ++fNumIterations >= fMaxIterations)
+                {
+                    LOG(info) << "Configured maximum number of iterations reached. Leaving RUNNING state.";
+                    break;
+                }
+            }
+        }
+    }
+}
+
+Sampler::~Sampler()
+{
+}
+
+}