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117 lines
2.8 KiB
C++
117 lines
2.8 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of clio: https://github.com/XRPLF/clio
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Copyright (c) 2024, the clio developers.
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Permission to use, copy, modify, and distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include "util/Retry.hpp"
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#include <boost/asio/io_context.hpp>
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#include <boost/asio/strand.hpp>
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#include <algorithm>
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#include <chrono>
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#include <cstddef>
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#include <memory>
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#include <utility>
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namespace util {
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RetryStrategy::RetryStrategy(std::chrono::steady_clock::duration delay) : initialDelay_(delay), delay_(delay)
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{
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}
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std::chrono::steady_clock::duration
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RetryStrategy::getDelay() const
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{
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return delay_;
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}
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void
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RetryStrategy::increaseDelay()
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{
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delay_ = nextDelay();
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}
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void
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RetryStrategy::reset()
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{
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delay_ = initialDelay_;
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}
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Retry::Retry(RetryStrategyPtr strategy, boost::asio::strand<boost::asio::io_context::executor_type> strand)
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: strategy_(std::move(strategy)), timer_(strand.get_inner_executor())
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{
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}
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Retry::~Retry()
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{
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*canceled_ = true;
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}
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void
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Retry::cancel()
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{
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timer_.cancel();
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*canceled_ = true;
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}
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size_t
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Retry::attemptNumber() const
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{
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return attemptNumber_;
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}
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std::chrono::steady_clock::duration
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Retry::delayValue() const
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{
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return strategy_->getDelay();
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}
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void
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Retry::reset()
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{
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attemptNumber_ = 0;
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strategy_->reset();
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}
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ExponentialBackoffStrategy::ExponentialBackoffStrategy(
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std::chrono::steady_clock::duration delay,
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std::chrono::steady_clock::duration maxDelay
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)
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: RetryStrategy(delay), maxDelay_(maxDelay)
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{
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}
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std::chrono::steady_clock::duration
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ExponentialBackoffStrategy::nextDelay() const
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{
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auto const next = getDelay() * 2;
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return std::min(next, maxDelay_);
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}
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Retry
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makeRetryExponentialBackoff(
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std::chrono::steady_clock::duration delay,
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std::chrono::steady_clock::duration maxDelay,
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boost::asio::strand<boost::asio::io_context::executor_type> strand
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)
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{
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return Retry(std::make_unique<ExponentialBackoffStrategy>(delay, maxDelay), std::move(strand));
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}
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} // namespace util
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