internal SessionFailRetryLoop(CuratorZookeeperClient client, Mode mode)
{
this.client = client;
this.mode = mode;
retryLoop = client.newRetryLoop();
watcher = new SessionFailWatcher(this);
}
public void testRetryLoop()
{
CuratorZookeeperClient client = new CuratorZookeeperClient(ZkDefaultHosts,
DefaultSessionTimeout,
DefaultConnectionTimeout,
null,
new RetryOneTime(1));
client.start();
try
{
int loopCount = 0;
RetryLoop retryLoop = client.newRetryLoop();
while ( retryLoop.shouldContinue() )
{
if ( ++loopCount > 2 )
{
Assert.Fail();
break;
}
try
{
client.getZooKeeper().createAsync("/test",
new byte[]{1,2,3},
ZooDefs.Ids.OPEN_ACL_UNSAFE,
CreateMode.EPHEMERAL)
.Wait();
retryLoop.markComplete();
}
catch ( Exception e )
{
retryLoop.takeException(e);
}
}
Assert.True(loopCount > 0);
}
finally
{
client.Dispose();
}
}
/**
* Convenience utility: creates a retry loop calling the given proc and retrying if needed
*
* @param client Zookeeper
* @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,
ICallable <T> proc)
{
T result = default(T);
RetryLoop retryLoop = client.newRetryLoop();
while (retryLoop.shouldContinue())
{
try
{
client.internalBlockUntilConnectedOrTimedOut();
result = proc.call();
retryLoop.markComplete();
}
catch (Exception e)
{
ThreadUtils.checkInterrupted(e);
retryLoop.takeException(e);
}
}
return(result);
}
public void testRetryLoopWithFailure()
{
CuratorZookeeperClient client = new CuratorZookeeperClient(ZkDefaultHosts,
DefaultSessionTimeout,
DefaultConnectionTimeout,
null,
new RetryOneTime(1));
client.start();
try
{
int loopCount = 0;
RetryLoop retryLoop = client.newRetryLoop();
while ( retryLoop.shouldContinue() )
{
++loopCount;
switch ( loopCount )
{
case 1:
{
// retryLoop.takeException();
break;
}
case 2:
{
retryLoop.markComplete();
break;
}
case 3:
case 4:
{
// ignore
break;
}
default:
{
Assert.Fail();
break;
}
}
}
Assert.True(loopCount >= 2);
}
finally
{
client.Dispose();
}
}