private <DATA_TYPE> void handleBackgroundOperationException(
OperationAndData<DATA_TYPE> operationAndData, Throwable e) {
do {
if ((operationAndData != null) && RetryLoop.isRetryException(e)) {
if (!Boolean.getBoolean(DebugUtils.PROPERTY_DONT_LOG_CONNECTION_ISSUES)) {
log.debug("Retry-able exception received", e);
}
if (client
.getRetryPolicy()
.allowRetry(
operationAndData.getThenIncrementRetryCount(),
operationAndData.getElapsedTimeMs(),
operationAndData)) {
if (!Boolean.getBoolean(DebugUtils.PROPERTY_DONT_LOG_CONNECTION_ISSUES)) {
log.debug("Retrying operation");
}
backgroundOperations.offer(operationAndData);
break;
} else {
if (!Boolean.getBoolean(DebugUtils.PROPERTY_DONT_LOG_CONNECTION_ISSUES)) {
log.debug("Retry policy did not allow retry");
}
if (operationAndData.getErrorCallback() != null) {
operationAndData.getErrorCallback().retriesExhausted(operationAndData);
}
}
}
logError("Background exception was not retry-able or retry gave up", e);
} while (false);
}
private void backgroundOperationsLoop() {
AuthInfo auth = authInfo.getAndSet(null);
if (auth != null) {
try {
client.getZooKeeper().addAuthInfo(auth.scheme, auth.auth);
} catch (Exception e) {
logError("addAuthInfo for background operation threw exception", e);
return;
}
}
while (!Thread.interrupted()) {
OperationAndData<?> operationAndData;
try {
operationAndData = backgroundOperations.take();
if (debugListener != null) {
debugListener.listen(operationAndData);
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
break;
}
performBackgroundOperation(operationAndData);
}
}
@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);
}
}