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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "iretrypolicy.h"
#include <atomic>
namespace mbus {
/**
* Implements a retry policy that allows resending of any error that is not fatal. It also does progressive
* back-off, delaying each attempt by the given time multiplied by the retry attempt.
*/
class RetryTransientErrorsPolicy : public IRetryPolicy {
private:
std::atomic<bool> _enabled;
std::atomic<double> _baseDelay;
public:
using SP = std::shared_ptr<RetryTransientErrorsPolicy>;
/**
* Constructs a new instance of this policy. By default retries are enabled with a 1.0 second base delay.
*/
RetryTransientErrorsPolicy();
~RetryTransientErrorsPolicy() override;
/**
* Sets whether or not this policy should allow retries or not.
*
* @param enabled True to allow retries.
* @return This, to allow chaining.
*/
RetryTransientErrorsPolicy &setEnabled(bool enabled);
/**
* Sets the base delay in seconds to wait between retries. This amount is multiplied by the retry number.
*
* @param baseDelay The time in seconds.
* @return This, to allow chaining.
*/
RetryTransientErrorsPolicy &setBaseDelay(double baseDelay);
bool canRetry(uint32_t errorCode) const override;
double getRetryDelay(uint32_t retry) const override;
};
} // namespace mbus
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