47 lines
1.3 KiB
C#
47 lines
1.3 KiB
C#
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#nullable enable
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using System;
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using System.Threading.Tasks;
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using UnityEngine.Purchasing.Stores.Util;
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namespace UnityEngine.Purchasing
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{
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class ExponentialRetryPolicy : IRetryPolicy
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{
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readonly int m_BaseRetryDelay;
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readonly int m_MaxRetryDelay;
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readonly int m_ExponentialFactor;
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public ExponentialRetryPolicy(int baseRetryDelay = 1000, int maxRetryDelay = 30 * 1000, int exponentialFactor = 2)
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{
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m_BaseRetryDelay = baseRetryDelay;
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m_MaxRetryDelay = maxRetryDelay;
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m_ExponentialFactor = exponentialFactor;
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}
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public void Invoke(Action<Action> actionToTry, Action? onRetryAction)
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{
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var currentRetryDelay = m_BaseRetryDelay;
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actionToTry(Retry);
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async void Retry()
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{
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onRetryAction?.Invoke();
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await WaitAndRetry();
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}
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async Task WaitAndRetry()
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{
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await Task.Delay(currentRetryDelay);
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currentRetryDelay = AdjustDelay(currentRetryDelay);
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actionToTry(Retry);
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}
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}
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int AdjustDelay(int delay)
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{
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return Math.Min(m_MaxRetryDelay, delay * m_ExponentialFactor);
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}
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}
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}
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