Add first two simple FairMQ examples

fairmq/examples/1-sampler-sink
fairmq/examples/2-sampler-processor-sink

fairmq/examples/1-sampler-sink/runExample1Sampler.cxx

@@ -0,0 +1,125 @@
+/********************************************************************************
+ *    Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             * 
+ *         GNU Lesser General Public Licence version 3 (LGPL) version 3,        *  
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+/**
+ * runExampleSampler.cxx
+ *
+ * @since 2013-04-23
+ * @author D. Klein, A. Rybalchenko
+ */
+
+#include <iostream>
+#include <csignal>
+
+#include "boost/program_options.hpp"
+
+#include "FairMQLogger.h"
+#include "FairMQParser.h"
+#include "FairMQProgOptions.h"
+#include "FairMQExample1Sampler.h"
+
+#ifdef NANOMSG
+#include "FairMQTransportFactoryNN.h"
+#else
+#include "FairMQTransportFactoryZMQ.h"
+#endif
+
+using namespace boost::program_options;
+
+FairMQExample1Sampler sampler;
+
+static void s_signal_handler(int signal)
+{
+    LOG(INFO) << "Caught signal " << signal;
+
+    sampler.ChangeState("END");
+
+    LOG(INFO) << "Shutdown complete.";
+    exit(1);
+}
+
+static void s_catch_signals(void)
+{
+    struct sigaction action;
+    action.sa_handler = s_signal_handler;
+    action.sa_flags = 0;
+    sigemptyset(&action.sa_mask);
+    sigaction(SIGINT, &action, NULL);
+    sigaction(SIGTERM, &action, NULL);
+}
+
+int main(int argc, char** argv)
+{
+    s_catch_signals();
+
+    FairMQProgOptions config;
+
+    try
+    {
+        std::string text;
+
+        options_description samplerOptions("Sampler options");
+        samplerOptions.add_options()
+            ("text", value<std::string>(&text)->default_value("Hello"), "Text to send out");
+
+        config.AddToCmdLineOptions(samplerOptions);
+
+        if (config.ParseAll(argc, argv))
+        {
+            return 0;
+        }
+
+        std::string filename = config.GetValue<std::string>("config-json-file");
+        std::string id = config.GetValue<std::string>("id");
+
+        config.UserParser<FairMQParser::JSON>(filename, id);
+
+        sampler.fChannels = config.GetFairMQMap();
+
+        LOG(INFO) << "PID: " << getpid();
+
+#ifdef NANOMSG
+        FairMQTransportFactory* transportFactory = new FairMQTransportFactoryNN();
+#else
+        FairMQTransportFactory* transportFactory = new FairMQTransportFactoryZMQ();
+#endif
+
+        sampler.SetTransport(transportFactory);
+
+        sampler.SetProperty(FairMQExample1Sampler::Id, id);
+        sampler.SetProperty(FairMQExample1Sampler::Text, text);
+
+        sampler.ChangeState("INIT_DEVICE");
+        sampler.WaitForEndOfState("INIT_DEVICE");
+
+        sampler.ChangeState("INIT_TASK");
+        sampler.WaitForEndOfState("INIT_TASK");
+
+        sampler.ChangeState("RUN");
+        sampler.WaitForEndOfState("RUN");
+
+        sampler.ChangeState("STOP");
+
+        sampler.ChangeState("RESET_TASK");
+        sampler.WaitForEndOfState("RESET_TASK");
+
+        sampler.ChangeState("RESET_DEVICE");
+        sampler.WaitForEndOfState("RESET_DEVICE");
+
+        sampler.ChangeState("END");
+
+    }
+    catch (std::exception& e)
+    {
+        LOG(ERROR) << e.what();
+        LOG(INFO) << "Command line options are the following: ";
+        config.PrintHelp();
+        return 1;
+    }
+
+    return 0;
+}