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// $Id: AlarmHandler.h,v 1.9 2011/04/18 15:18:57 mommsen Exp $

#ifndef EventFilter_StorageManager_AlarmHandler_h
#define EventFilter_StorageManager_AlarmHandler_h

#include <string>

#include "boost/shared_ptr.hpp"
#include "boost/thread/mutex.hpp"

#include "xcept/Exception.h"
#include "xdaq/Application.h"
#include "xdata/InfoSpace.h"


namespace stor {

  class AlarmHandler
  {

  public:

    enum ALARM_LEVEL { OKAY, WARNING, ERROR, FATAL };
    
    AlarmHandler() {};
    explicit AlarmHandler(xdaq::Application*);

    virtual ~AlarmHandler() {};

    virtual void notifySentinel
    (
      const ALARM_LEVEL,
      xcept::Exception&
    );

    virtual void raiseAlarm
    (
      const std::string name,
      const ALARM_LEVEL,
      xcept::Exception&
    );

    virtual void revokeAlarm(const std::string name);

    void clearAllAlarms();

    Logger& getLogger() const
    { return app_->getApplicationLogger(); }


  private:

    bool raiseAlarm
    (
      const std::string name,
      const std::string level,
      xcept::Exception&
    );

    xdaq::Application* app_;
    xdata::InfoSpace* alarmInfoSpace_;

    mutable boost::mutex mutex_;

  };
  
  typedef boost::shared_ptr<AlarmHandler> AlarmHandlerPtr;

} // namespace stor

#endif // EventFilter_StorageManager_AlarmHandler_h