private void OnSentinelError(Exception ex)
{
if (this.worker != null)
{
Log.Error("Error on existing SentinelWorker, reconnecting...");
if (OnWorkerError != null)
{
OnWorkerError(ex);
}
this.worker = GetNextSentinel();
this.worker.BeginListeningForConfigurationChanges();
}
}
public List <string> GetActiveSentinelHosts(IEnumerable <string> sentinelHosts)
{
var activeSentinelHosts = new List <string>();
foreach (var sentinelHost in sentinelHosts.ToArray())
{
try
{
if (Log.IsDebugEnabled)
{
Log.Debug("Connecting to all available Sentinels to discover Active Sentinel Hosts...");
}
var endpoint = sentinelHost.ToRedisEndpoint(defaultPort: RedisConfig.DefaultPortSentinel);
using (var sentinelWorker = new RedisSentinelWorker(this, endpoint))
{
var activeHosts = sentinelWorker.GetSentinelHosts(MasterName);
if (!activeSentinelHosts.Contains(sentinelHost))
{
activeSentinelHosts.Add(sentinelHost);
}
foreach (var activeHost in activeHosts)
{
if (!activeSentinelHosts.Contains(activeHost))
{
activeSentinelHosts.Add(activeHost);
}
}
}
if (Log.IsDebugEnabled)
{
Log.Debug("All active Sentinels Found: " + string.Join(", ", activeSentinelHosts));
}
}
catch (Exception ex)
{
Log.Error("Could not get active Sentinels from: {0}".Fmt(sentinelHost), ex);
}
}
return(activeSentinelHosts);
}
private RedisSentinelWorker GetValidSentinelWorker()
{
if (isDisposed)
{
throw new ObjectDisposedException(GetType().Name);
}
if (this.worker != null)
{
return(this.worker);
}
RedisException lastEx = null;
while (this.worker == null && ShouldRetry())
{
try
{
this.worker = GetNextSentinel();
GetRedisManager();
this.worker.BeginListeningForConfigurationChanges();
this.failures = 0; //reset
return(this.worker);
}
catch (RedisException ex)
{
if (OnWorkerError != null)
{
OnWorkerError(ex);
}
lastEx = ex;
this.failures++;
Interlocked.Increment(ref RedisState.TotalFailedSentinelWorkers);
}
}
this.failures = 0; //reset
Thread.Sleep(WaitBetweenFailedHosts);
throw new RedisException("No Redis Sentinels were available", lastEx);
}
private RedisSentinelWorker GetNextSentinel()
{
lock (oLock)
{
if (this.worker != null)
{
this.worker.Dispose();
this.worker = null;
}
if (++sentinelIndex >= SentinelEndpoints.Length)
{
sentinelIndex = 0;
}
var sentinelWorker = new RedisSentinelWorker(this, SentinelEndpoints[sentinelIndex])
{
OnSentinelError = OnSentinelError
};
return(sentinelWorker);
}
}
