SampleServer.cpp

//
// SampleServer.cpp
//
// $Id: //poco/svn/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)