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39 lines
930 B
C++
39 lines
930 B
C++
/* Rate-limiting hook.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <villas/hook.hpp>
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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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// The timestamp which should be used for limiting.
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enum { LIMIT_RATE_LOCAL, LIMIT_RATE_RECEIVED, LIMIT_RATE_ORIGIN } mode;
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double deadtime;
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timespec last;
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public:
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LimitRateHook(Path *p, Node *n, int fl, int prio, bool en = true)
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: LimitHook(p, n, fl, prio, en), mode(LIMIT_RATE_LOCAL), deadtime(0),
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last({0, 0}) {}
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virtual void setRate(double rate, double maxRate = -1) {
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deadtime = 1.0 / rate;
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}
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virtual void parse(json_t *json);
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virtual Hook::Reason process(struct Sample *smp);
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};
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} // namespace node
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} // namespace villas
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