64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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* Licensed to Green Energy Corp (www.greenenergycorp.com) under one or
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* more contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright ownership.
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* Green Energy Corp licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This project was forked on 01/01/2013 by Automatak, LLC and modifications
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* may have been made to this file. Automatak, LLC licenses these modifications
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* to you under the terms of the License.
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*/
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#ifndef ASIOPAL_IOPENDELAYSTRATEGY_H
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#define ASIOPAL_IOPENDELAYSTRATEGY_H
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#include <openpal/executor/TimeDuration.h>
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#include <openpal/util/Uncopyable.h>
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namespace asiopal
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{
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/**
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* A strategy interface for controlling how connection are retried
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*/
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class IOpenDelayStrategy
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{
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public:
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virtual ~IOpenDelayStrategy() {}
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/**
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* The the next delay based on the current and the maximum.
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*/
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virtual openpal::TimeDuration GetNextDelay(const openpal::TimeDuration& current, const openpal::TimeDuration& max) const = 0;
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};
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/**
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* Implements IOpenDelayStrategy using exponential-backoff.
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*/
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class ExponentialBackoffStrategy : public IOpenDelayStrategy, private openpal::Uncopyable
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{
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static ExponentialBackoffStrategy instance;
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public:
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static IOpenDelayStrategy& Instance();
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virtual openpal::TimeDuration GetNextDelay(const openpal::TimeDuration& current, const openpal::TimeDuration& max) const override final;
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};
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}
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#endif
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