icinga2/lib/base/statsfunction.h

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef STATSFUNCTION_H
#define STATSFUNCTION_H
#include "base/i2-base.h"
#include "base/registry.h"
#include "base/value.h"
#include "base/dictionary.h"
#include <boost/function.hpp>
namespace icinga
{
/**
* A stats function that can be used to execute a stats task.
*
* @ingroup base
*/
class I2_BASE_API StatsFunction : public Object
{
public:
DECLARE_PTR_TYPEDEFS(StatsFunction);
typedef boost::function<Value (Dictionary::Ptr& status, Dictionary::Ptr& perfdata)> Callback;
StatsFunction(const Callback& function);
Value Invoke(Dictionary::Ptr& status, Dictionary::Ptr& perfdata);
private:
Callback m_Callback;
};
/**
* A registry for script functions.
*
* @ingroup base
*/
class I2_BASE_API StatsFunctionRegistry : public Registry<StatsFunctionRegistry, StatsFunction::Ptr>
{
public:
static StatsFunctionRegistry *GetInstance(void);
};
/**
* Helper class for registering StatsFunction implementation classes.
*
* @ingroup base
*/
class I2_BASE_API RegisterStatsFunctionHelper
{
public:
RegisterStatsFunctionHelper(const String& name, const StatsFunction::Callback& function);
};
#define REGISTER_STATSFUNCTION(name, callback) \
I2_EXPORT icinga::RegisterStatsFunctionHelper g_RegisterStF_ ## name(#name, callback)
}
#endif /* STATSFUNCTION_H */