protected override void OnConnectionRetry(RedisConnectionRetryEventArgs e)
{
var settings = Settings;
if (!m_UseAsyncCompleter)
{
e.ThrowError = true;
e.ContinueToSpin = true;
}
else if (e.CurrentRetryCount > 0)
{
e.ThrowError = false;
e.ContinueToSpin = false;
}
}
protected virtual void OnConnectionTimeout(RedisConnectionRetryEventArgs e)
{
}
protected internal override IRedisConnection Connect(int dbIndex, RedisRole expectedRole)
{
ValidateNotDisposed();
OnBeforeConnect(dbIndex, expectedRole);
var settings = (Settings ?? RedisPoolSettings.Default);
var spinStepTimeoutMs = GetConnectionSpinStepTimeout();
var connectionTimeout = settings.ConnectionTimeout;
connectionTimeout = connectionTimeout <= 0 ? RedisConstants.MaxConnectionTimeout : connectionTimeout;
var retryCountLimit = (int)Math.Ceiling((double)settings.ConnectionWaitTimeout / spinStepTimeoutMs);
var retryInfo = new RedisConnectionRetryEventArgs(retryCountLimit, spinStepTimeoutMs,
connectionTimeout, connectionTimeout);
var maxConnectionCount = Math.Max(RedisConstants.MinConnectionCount, GetMaxConnectionCount());
var limiterWait = (maxConnectionCount < 2) ? 0 : retryInfo.SpinStepTimeoutMs;
while (retryInfo.RemainingTime > 0)
{
var signaled = m_ConnectionLimiter.Wait(limiterWait);
if (signaled)
{
try
{
return(NewConnection(DequeueSocket(dbIndex, expectedRole), dbIndex, expectedRole, true));
}
catch (Exception e)
{
m_ConnectionLimiter.Release();
if (e.IsSocketError())
{
throw;
}
}
}
retryInfo.Entered();
OnConnectionRetry(retryInfo);
if (!retryInfo.ContinueToSpin ||
retryInfo.CurrentRetryCount >= retryInfo.RetryCountLimit)
{
OnConnectionLimitExceed(retryInfo);
if (retryInfo.ThrowError)
{
throw new RedisFatalException("Wait retry count exited the given maximum limit", RedisErrorCode.ConnectionError);
}
return(null);
}
}
OnConnectionTimeout(retryInfo);
if (retryInfo.ThrowError)
{
throw new RedisFatalException("Connection timeout occured while trying to connect", RedisErrorCode.ConnectionError);
}
return(null);
}
protected virtual void OnConnectionLimitExceed(RedisConnectionRetryEventArgs e)
{
}