private synchronized void checkTimeouts() throws Exception {
long elapsed = System.currentTimeMillis() - connectionStartMs;
if (elapsed >= Math.min(sessionTimeoutMs, connectionTimeoutMs)) {
if (zooKeeper.hasNewConnectionString()) {
handleNewConnectionString();
} else if (elapsed > sessionTimeoutMs) {
if (!Boolean.getBoolean(DebugUtils.PROPERTY_DONT_LOG_CONNECTION_ISSUES)) {
log.warn(
String.format(
"Connection attempt unsuccessful after %d (greater than session timeout of %d). Resetting connection and trying again with a new connection.",
elapsed, sessionTimeoutMs));
}
reset();
} else {
KeeperException.ConnectionLossException connectionLossException =
new KeeperException.ConnectionLossException();
if (!Boolean.getBoolean(DebugUtils.PROPERTY_DONT_LOG_CONNECTION_ISSUES)) {
log.error(
String.format(
"Connection timed out for connection string (%s) and timeout (%d) / elapsed (%d)",
zooKeeper.getConnectionString(), connectionTimeoutMs, elapsed),
connectionLossException);
}
tracer.get().addCount("connections-timed-out", 1);
throw connectionLossException;
}
}
}
private synchronized void reset() throws Exception {
log.debug("reset");
isConnected.set(false);
connectionStartMs = System.currentTimeMillis();
zooKeeper.closeAndReset();
zooKeeper.getZooKeeper(); // initiate connection
}
@Override
public void close() throws IOException {
log.debug("Closing");
Closeables.closeQuietly(ensembleProvider);
try {
zooKeeper.closeAndClear();
} catch (Exception e) {
throw new IOException(e);
} finally {
isConnected.set(false);
}
}
private boolean checkState(Event.KeeperState state, boolean wasConnected) {
boolean isConnected = wasConnected;
boolean checkNewConnectionString = true;
switch (state) {
default:
case Disconnected:
{
isConnected = false;
break;
}
case SyncConnected:
case ConnectedReadOnly:
{
isConnected = true;
break;
}
case AuthFailed:
{
isConnected = false;
log.error("Authentication failed");
break;
}
case Expired:
{
isConnected = false;
checkNewConnectionString = false;
handleExpiredSession();
break;
}
case SaslAuthenticated:
{
// NOP
break;
}
}
if (checkNewConnectionString && zooKeeper.hasNewConnectionString()) {
handleNewConnectionString();
}
return isConnected;
}
ZooKeeper getZooKeeper() throws Exception {
if (SessionFailRetryLoop.sessionForThreadHasFailed()) {
throw new SessionFailRetryLoop.SessionFailedException();
}
Exception exception = backgroundExceptions.poll();
if (exception != null) {
log.error("Background exception caught", exception);
tracer.get().addCount("background-exceptions", 1);
throw exception;
}
boolean localIsConnected = isConnected.get();
if (!localIsConnected) {
checkTimeouts();
}
return zooKeeper.getZooKeeper();
}
