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SampleServer.cpp

//
// SampleServer.cpp
//
// $Id: //poco/1.2/Util/samples/SampleServer/src/SampleServer.cpp#1 $
//
// This sample demonstrates the ServerApplication class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/Util/ServerApplication.h"
#include "Poco/Util/Option.h"
#include "Poco/Util/OptionSet.h"
#include "Poco/Util/HelpFormatter.h"
#include "Poco/Task.h"
#include "Poco/TaskManager.h"
#include "Poco/DateTimeFormatter.h"
#include <iostream>


using Poco::Util::Application;
using Poco::Util::ServerApplication;
using Poco::Util::Option;
using Poco::Util::OptionSet;
using Poco::Util::OptionCallback;
using Poco::Util::HelpFormatter;
using Poco::Task;
using Poco::TaskManager;
using Poco::DateTimeFormatter;


class SampleTask: public Task
{
public:
      SampleTask(): Task("SampleTask")
      {
      }
      
      void runTask()
      {
            Application& app = Application::instance();
            while (!sleep(5000))
            {
                  Application::instance().logger().information("busy doing nothing... " + DateTimeFormatter::format(app.uptime()));
            }
      }
};


class SampleServer: public ServerApplication
{
public:
      SampleServer(): _helpRequested(false)
      {
      }
      
      ~SampleServer()
      {
      }

protected:
      void initialize(Application& self)
      {
            loadConfiguration(); // load default configuration files, if present
            ServerApplication::initialize(self);
            logger().information("starting up");
      }
            
      void uninitialize()
      {
            logger().information("shutting down");
            ServerApplication::uninitialize();
      }

      void defineOptions(OptionSet& options)
      {
            ServerApplication::defineOptions(options);
            
            options.addOption(
                  Option("help", "h", "display help information on command line arguments")
                        .required(false)
                        .repeatable(false)
                        .callback(OptionCallback<SampleServer>(this, &SampleServer::handleHelp)));
      }

      void handleHelp(const std::string& name, const std::string& value)
      {
            _helpRequested = true;
            displayHelp();
            stopOptionsProcessing();
      }

      void displayHelp()
      {
            HelpFormatter helpFormatter(options());
            helpFormatter.setCommand(commandName());
            helpFormatter.setUsage("OPTIONS");
            helpFormatter.setHeader("A sample server application that demonstrates some of the features of the Util::ServerApplication class.");
            helpFormatter.format(std::cout);
      }

      int main(const std::vector<std::string>& args)
      {
            if (!_helpRequested)
            {
                  TaskManager tm;
                  tm.start(new SampleTask);
                  waitForTerminationRequest();
                  tm.cancelAll();
                  tm.joinAll();
            }
            return Application::EXIT_OK;
      }
      
private:
      bool _helpRequested;
};


POCO_SERVER_MAIN(SampleServer)

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