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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 <cstdint>
#include <memory>
namespace mbus {
/**
* When a {@link com.yahoo.messagebus.Reply} containing errors is returned to a {@link
* com.yahoo.messagebus.MessageBus}, an object implementing this interface is consulted on whether or not to
* resend the corresponding {@link com.yahoo.messagebus.Message}. The policy is passed to the message bus at
* creation time using the {@link com.yahoo.messagebus.MessageBusParams#setRetryPolicy(RetryPolicy::UP)}
* method.
*/
class IRetryPolicy {
public:
using SP = std::shared_ptr<IRetryPolicy>;
/**
* Virtual destructor required for inheritance.
*/
virtual ~IRetryPolicy() = default;
/**
* Returns whether or not a {@link com.yahoo.messagebus.Reply} containing an {@link
* com.yahoo.messagebus.Error} with the given error code can be retried. This method is invoked once for
* each error in a reply.
*
* @param errorCode The code to check.
* @return True if the message can be resent.
*/
virtual bool canRetry(uint32_t errorCode) const = 0;
/**
* Returns the number of seconds to delay resending a message.
*
* @param retry The retry attempt.
* @return The delay in seconds.
*/
virtual double getRetryDelay(uint32_t retry) const = 0;
};
} // namespace mbus
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