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RTC: Support circuit breaker. 4.0.103

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winlin 2021-05-07 17:43:05 +08:00
parent 46c980c70a
commit 92fc0af8f4
13 changed files with 434 additions and 9 deletions
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trunk/src/app/srs_app_threads.hpp Normal file
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/**
* The MIT License (MIT)
*
* Copyright (c) 2013-2020 Winlin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* 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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SRS_APP_THREADS_HPP
#define SRS_APP_THREADS_HPP
#include <srs_core.hpp>
#include <srs_app_hourglass.hpp>
// Protect server in high load.
class SrsCircuitBreaker : public ISrsFastTimer
{
private:
// The config for high/critical water level.
bool enabled_;
int high_threshold_;
int high_pulse_;
int critical_threshold_;
int critical_pulse_;
int dying_threshold_;
int dying_pulse_;
private:
// Reset the water-level when CPU is low for N times.
// @note To avoid the CPU change rapidly.
int hybrid_high_water_level_;
int hybrid_critical_water_level_;
int hybrid_dying_water_level_;
public:
SrsCircuitBreaker();
virtual ~SrsCircuitBreaker();
public:
srs_error_t initialize();
public:
// Whether hybrid server water-level is high.
bool hybrid_high_water_level();
bool hybrid_critical_water_level();
bool hybrid_dying_water_level();
// interface ISrsFastTimer
private:
srs_error_t on_timer(srs_utime_t interval);
};
extern SrsCircuitBreaker* _srs_circuit_breaker;
#endif