Refactor the examples after move from FairRoot

examples/req-rep/Client.cxx

@@ -0,0 +1,80 @@
+/********************************************************************************
+ *    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"                       *
+ ********************************************************************************/
+/**
+ * Client.cpp
+ *
+ * @since 2014-10-10
+ * @author A. Rybalchenko
+ */
+
+#include <thread> // this_thread::sleep_for
+#include <chrono>
+
+#include "Client.h"
+
+using namespace std;
+
+namespace example_req_rep
+{
+
+Client::Client()
+    : fText()
+    , fMaxIterations(0)
+    , fNumIterations(0)
+{
+}
+
+void Client::InitTask()
+{
+    fText = fConfig->GetValue<string>("text");
+    fMaxIterations = fConfig->GetValue<uint64_t>("max-iterations");
+}
+
+bool Client::ConditionalRun()
+{
+
+    string* text = new string(fText);
+
+    // create message object with a pointer to the data buffer,
+    // its size,
+    // custom deletion function (called when transfer is done),
+    // and pointer to the object managing the data buffer
+    FairMQMessagePtr req(NewMessage(const_cast<char*>(text->c_str()), // data
+                                                          text->length(), // size
+                                                          [](void* /*data*/, void* object) { delete static_cast<string*>(object); }, // deletion callback
+                                                          text)); // object that manages the data
+    FairMQMessagePtr rep(NewMessage());
+
+    LOG(info) << "Sending \"" << fText << "\" to server.";
+
+    if (Send(req, "data") > 0)
+    {
+        if (Receive(rep, "data") >= 0)
+        {
+            LOG(info) << "Received reply from server: \"" << string(static_cast<char*>(rep->GetData()), rep->GetSize()) << "\"";
+
+            if (fMaxIterations > 0 && ++fNumIterations >= fMaxIterations)
+            {
+                LOG(info) << "Configured maximum number of iterations reached. Leaving RUNNING state.";
+                return false;
+            }
+
+            this_thread::sleep_for(chrono::seconds(1));
+
+            return true;
+        }
+    }
+
+    return false;
+}
+
+Client::~Client()
+{
+}
+
+} // namespace example_req_rep