ClientCnxn.java 文件源码

/**
 * Callback invoked by the ClientCnxnSocket once a connection has been
 * established.
 *
 * @param _negotiatedSessionTimeout
 * @param _sessionId
 * @param _sessionPasswd
 * @param isRO
 * @throws IOException
 */
void onConnected(int _negotiatedSessionTimeout, long _sessionId,
                 byte[] _sessionPasswd, boolean isRO) throws IOException {
    negotiatedSessionTimeout = _negotiatedSessionTimeout;
    if (negotiatedSessionTimeout <= 0) {
        state = States.CLOSED;

        eventThread.queueEvent(new WatchedEvent(
                Watcher.Event.EventType.None,
                Watcher.Event.KeeperState.Expired, null));
        eventThread.queueEventOfDeath();
        throw new SessionExpiredException(
                "Unable to reconnect to ZooKeeper service, session 0x"
                        + Long.toHexString(sessionId) + " has expired");
    }
    if (!readOnly && isRO) {
        LOG.error("Read/write client got connected to read-only server");
    }
    readTimeout = negotiatedSessionTimeout * 2 / 3;
    connectTimeout = negotiatedSessionTimeout / hostProvider.size();
    hostProvider.onConnected();
    sessionId = _sessionId;
    sessionPasswd = _sessionPasswd;
    state = (isRO) ?
            States.CONNECTEDREADONLY : States.CONNECTED;
    seenRwServerBefore |= !isRO;
    LOG.info("Session establishment complete on server "
            + clientCnxnSocket.getRemoteSocketAddress()
            + ", sessionid = 0x" + Long.toHexString(sessionId)
            + ", negotiated timeout = " + negotiatedSessionTimeout
            + (isRO ? " (READ-ONLY mode)" : ""));
    KeeperState eventState = (isRO) ?
            KeeperState.ConnectedReadOnly : KeeperState.SyncConnected;
    eventThread.queueEvent(new WatchedEvent(
            Watcher.Event.EventType.None,
            eventState, null));
}