67 lines
1.6 KiB
C#
67 lines
1.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading;
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namespace System.Workflow.Runtime
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{
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internal class DbRetry
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{
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private const short _defaultMaxRetries = 20;
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private const int _defaultRetrySleep = 2000;
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private const short _spinCount = 3;
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private short _maxRetries = _defaultMaxRetries;
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private int _retrySleep = _defaultRetrySleep;
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private bool _enableRetries = false;
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protected DbRetry()
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{
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}
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internal DbRetry(bool enableRetries)
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{
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_enableRetries = enableRetries;
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}
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internal short MaxRetries
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{
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get { return _maxRetries; }
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}
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internal bool TryDoRetry(ref short retryCount)
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{
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if (CanRetry(retryCount++))
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{
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RetrySleep(retryCount);
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return true;
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}
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else
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return false;
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}
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internal bool CanRetry(short retryCount)
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{
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if (!_enableRetries)
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return false;
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if (retryCount < _maxRetries)
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return true;
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else
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return false;
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}
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internal void RetrySleep(short retryCount)
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{
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//
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// For the first couple of retries just spin
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// If we fail _spinCount times start then introduce a sleep
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if (retryCount <= _spinCount)
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return;
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int sleep = _retrySleep * retryCount;
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Thread.Sleep(sleep);
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}
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}
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}
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