public IZooKeeper GetZooKeeper()
{
if (SessionFailRetryLoop.SessionForThreadHasFailed())
{
throw new SessionFailRetryLoop.SessionFailedException();
}
Exception exception;
backgroundExceptions.TryDequeue(out exception);
if (exception != null)
{
tracer.AddCount("background-exceptions", 1);
throw exception;
}
bool localIsConnected = isConnected;
//Interlocked. (ref localIsConnected, isConnected);
if (!localIsConnected)
{
CheckTimeouts();
}
return(zooKeeper.GetZooKeeper());
}
/**
* Convenience utility: creates a "session fail" retry loop calling the given proc
*
* @param client Zookeeper
* @param mode how to handle session failures
* @param proc procedure to call with retry
* @param <T> return type
* @return procedure result
* @throws Exception any non-retriable errors
*/
public static T CallWithRetry <T>(CuratorZookeeperClient client, Mode mode, Func <T> proc)
{
T result = default(T);
SessionFailRetryLoop retryLoop = client.NewSessionFailRetryLoop(mode);
retryLoop.Start();
try{
while (retryLoop.ShouldContinue())
{
try
{
client.InternalBlockUntilConnectedOrTimedOut();
result = proc();
retryLoop.MarkComplete();
}
catch (Exception e)
{
retryLoop.TakeException(e);
}
}
}
finally{
retryLoop.Dispose();
}
return(result);
}