@SuppressWarnings({"ThrowableResultOfMethodCallIgnored"})
<DATA_TYPE> void processBackgroundOperation(
OperationAndData<DATA_TYPE> operationAndData, CuratorEvent event) {
boolean isInitialExecution = (event == null);
if (isInitialExecution) {
performBackgroundOperation(operationAndData);
return;
}
boolean doQueueOperation = false;
do {
if (RetryLoop.shouldRetry(event.getResultCode())) {
if (client
.getRetryPolicy()
.allowRetry(
operationAndData.getThenIncrementRetryCount(),
operationAndData.getElapsedTimeMs(),
operationAndData)) {
doQueueOperation = true;
} else {
if (operationAndData.getErrorCallback() != null) {
operationAndData.getErrorCallback().retriesExhausted(operationAndData);
}
KeeperException.Code code = KeeperException.Code.get(event.getResultCode());
Exception e = null;
try {
e = (code != null) ? KeeperException.create(code) : null;
} catch (Throwable ignore) {
}
if (e == null) {
e = new Exception("Unknown result code: " + event.getResultCode());
}
logError("Background operation retry gave up", e);
}
break;
}
if (operationAndData.getCallback() != null) {
sendToBackgroundCallback(operationAndData, event);
break;
}
processEvent(event);
} while (false);
if (doQueueOperation) {
queueOperation(operationAndData);
}
}
private void validateConnection(CuratorEvent curatorEvent) {
if (curatorEvent.getType() == CuratorEventType.WATCHED) {
if (curatorEvent.getWatchedEvent().getState() == Watcher.Event.KeeperState.Disconnected) {
connectionStateManager.addStateChange(ConnectionState.SUSPENDED);
internalSync(
this, "/",
null); // we appear to have disconnected, force a new ZK event and see if we can connect
// to another server
} else if (curatorEvent.getWatchedEvent().getState() == Watcher.Event.KeeperState.Expired) {
connectionStateManager.addStateChange(ConnectionState.LOST);
} else if (curatorEvent.getWatchedEvent().getState()
== Watcher.Event.KeeperState.SyncConnected) {
connectionStateManager.addStateChange(ConnectionState.RECONNECTED);
} else if (curatorEvent.getWatchedEvent().getState()
== Watcher.Event.KeeperState.ConnectedReadOnly) {
connectionStateManager.addStateChange(ConnectionState.READ_ONLY);
}
}
}