/**
* Callback invoked by the ClientCnxnSocket once a connection has been
* established.
*
* @param _negotiatedSessionTimeout
* @param _sessionId
* @param _sessionPasswd
* @param isRO
* @throws IOException
*/
internal void onConnected(int _negotiatedSessionTimeout, long _sessionId,
byte[] _sessionPasswd, bool isRO)
{
negotiatedSessionTimeout.Value = _negotiatedSessionTimeout;
if (negotiatedSessionTimeout.Value <= 0)
{
state.Value = ZooKeeper.States.CLOSED;
queueEvent(new WatchedEvent(
Watcher.Event.EventType.None,
Watcher.Event.KeeperState.Expired, null));
queueEventOfDeath();
throw new SessionExpiredException("Unable to reconnect to ZooKeeper service, session 0x" +
sessionId.ToHexString() + " has expired");
}
if (!readOnly && isRO)
{
LOG.error("Read/write client got connected to read-only server");
}
readTimeout = negotiatedSessionTimeout.Value * 2 / 3;
connectTimeout = negotiatedSessionTimeout.Value / hostProvider.size();
hostProvider.onConnected();
sessionId = _sessionId;
sessionPasswd = _sessionPasswd;
state.Value = (isRO) ? ZooKeeper.States.CONNECTEDREADONLY : ZooKeeper.States.CONNECTED;
seenRwServerBefore.Value |= !isRO;
LOG.info("Session establishment complete on server " + clientCnxnSocket.getRemoteSocketAddress() +
", sessionid = 0x" + sessionId.ToHexString()
+ ", negotiated timeout = " + negotiatedSessionTimeout.Value
+ (isRO ? " (READ-ONLY mode)" : ""));
Watcher.Event.KeeperState eventState = (isRO)
? Watcher.Event.KeeperState.ConnectedReadOnly
: Watcher.Event.KeeperState.SyncConnected;
queueEvent(new WatchedEvent(
Watcher.Event.EventType.None, eventState, null));
}
/**
* Creates a connection object. The actual network connect doesn't get
* established until needed. The start() instance method must be called
* subsequent to construction.
*
* @param chrootPath
* - the chroot of this client. Should be removed from this Class
* in ZOOKEEPER-838
* @param hostProvider
* the list of ZooKeeper servers to connect to
* @param sessionTimeout
* the timeout for connections.
* @param zooKeeper
* the zookeeper object that this connection is related to.
* @param watcher
* watcher for this connection
* @param clientCnxnSocket
* the socket implementation used (e.g. NIO/Netty)
* @param sessionId
* session id if re-establishing session
* @param sessionPasswd
* session passwd if re-establishing session
* @param canBeReadOnly
* whether the connection is allowed to go to read-only mode in
* case of partitioning
* @throws IOException
*/
internal ClientCnxn(string chrootPath, HostProvider hostProvider,
int sessionTimeout, ZooKeeper zooKeeper,
ClientWatchManager watcher,
long sessionId, byte[] sessionPasswd, bool canBeReadOnly)
{
this.zooKeeper = zooKeeper;
this.watcher = watcher;
this.sessionId = sessionId;
this.sessionPasswd = sessionPasswd;
this.sessionTimeout = sessionTimeout;
this.hostProvider = hostProvider;
this.chrootPath = chrootPath;
connectTimeout = sessionTimeout / hostProvider.size();
readTimeout = sessionTimeout * 2 / 3;
readOnly = canBeReadOnly;
clientCnxnSocket = new ClientCnxnSocketNIO(this);
state.Value = ZooKeeper.States.CONNECTING;
}