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/*
*
* (C) 2019 - ntop.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 3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef _OTHER_ALERTABLE_ENTITY_H_
#define _OTHER_ALERTABLE_ENTITY_H_
#include "ntop_includes.h"
class NetworkInterface;
class OtherAlertableEntity : public AlertableEntity {
private:
protected:
/*
Creating multiple maps guarantees that periodic scripts at different granularities
do not interfere each other and thus that they can run concurrently without locking.
However while alert_cache is accessed only by the alert engine and thus it is "thread-safe"
as concurrent scripts (i.e. at different granularities) cannot call it, engaged_alerts
needs to be protected as
- it can be called by the Lua GUI
- it can be called by the alert engine
*/
std::map<std::string, std::string> alert_cache[MAX_NUM_PERIODIC_SCRIPTS];
std::map<std::string, Alert> engaged_alerts[MAX_NUM_PERIODIC_SCRIPTS];
void getPeriodicityAlerts(lua_State* vm, ScriptPeriodicity p,
AlertType type_filter, AlertLevel severity_filter,
AlertRole role_filter, u_int *idx);
public:
OtherAlertableEntity(NetworkInterface *alert_iface, AlertEntity entity);
virtual ~OtherAlertableEntity();
/*
getAlertCachedValue and setAlertCacheValue as thread safe as they are invoked only by
periodic scripts and are not accessed by the GUI lua methods
*/
inline std::string getAlertCachedValue(std::string key, ScriptPeriodicity p) {
std::map<std::string, std::string>::iterator it = alert_cache[(u_int)p].find(key);
return((it != alert_cache[(u_int)p].end()) ? it->second : std::string(""));
}
inline void setAlertCacheValue(std::string key, std::string value,
ScriptPeriodicity p) {
alert_cache[(u_int)p][key] = value;
}
bool triggerAlert(lua_State* vm, std::string key,
ScriptPeriodicity p, time_t now,
u_int32_t score, AlertType alert_id,
const char *subtype,
const char *json);
bool releaseAlert(lua_State* vm, std::string key,
ScriptPeriodicity p, time_t now);
void luaAlert(lua_State* vm, const Alert *alert, ScriptPeriodicity p) const;
void countAlerts(grouped_alerts_counters *counters);
void getAlerts(lua_State* vm, ScriptPeriodicity p, AlertType type_filter,
AlertLevel severity_filter, AlertRole role_filter,
u_int *idx);
};
#endif
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