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https://git.rwth-aachen.de/acs/public/villas/node/
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70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
/** Rate-limiting hook.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#pragma once
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#include <villas/hook.hpp>
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/** @addtogroup hooks Hook functions
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* @{
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*/
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namespace villas {
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namespace node {
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class LimitRateHook : public LimitHook {
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protected:
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enum {
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LIMIT_RATE_LOCAL,
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LIMIT_RATE_RECEIVED,
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LIMIT_RATE_ORIGIN
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} mode; /**< The timestamp which should be used for limiting. */
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double deadtime;
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timespec last;
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public:
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LimitRateHook(struct vpath *p, struct vnode *n, int fl, int prio, bool en = true) :
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LimitHook(p, n, fl, prio, en),
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mode(LIMIT_RATE_LOCAL),
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deadtime(0),
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last({0, 0})
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{ }
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virtual void setRate(double rate, double maxRate = -1)
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{
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deadtime = 1.0 / rate;
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}
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virtual void parse(json_t *cfg);
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virtual Hook::Reason process(sample *smp);
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};
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} /* namespace node */
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} /* namespace villas */
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/**
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* @}
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*/
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