@Override
protected void startInternal() throws Exception {
c_logger.info(StrUtil.join("Starting ", this, "..."));
m_stopped = false;
final Configuration conf = m_conf;
InetAddress bindAddr = null;
final String host = conf.bindAddr();
if (host != null) bindAddr = InetAddress.getByName(host);
final ServerSocketChannel ssc = ServerSocketChannel.open();
try {
final ServerSocket socket = ssc.socket();
initSocket(socket, conf);
final SocketAddress ep = new InetSocketAddress(bindAddr, conf.port());
final Integer backlog = conf.backlog();
if (backlog == null) socket.bind(ep);
else socket.bind(ep, backlog);
m_ssc = ssc;
m_acceptor.doAccept(this);
c_logger.info(StrUtil.join(this, " started, listening on ", socket.getLocalSocketAddress()));
} catch (Exception e) {
try {
ssc.close();
} catch (Throwable t) {
}
c_logger.error(StrUtil.join(this, " failed to start"), e);
m_ssc = null;
throw e;
}
}
private void updateFilters(Configuration newConf) {
final String[] newNames = newConf == null ? StrUtil.getEmptyStringArray() : newConf.filters();
String[] oldNames = StrUtil.getEmptyStringArray();
final IFilterManager fm = m_fm;
if (m_conf == null) m_filters = fm.getFilters(oldNames);
else oldNames = m_conf.filters();
if (Arrays.equals(newNames, oldNames)) return;
m_filters = fm.getFilters(newNames);
fm.ungetFilters(oldNames);
}
@Override
public void onSessionConnectTimedOut(ISession session) {
Object msg = session.detach();
c_logger.warn(StrUtil.join(session, ": CONNECT_TIMEOUT, ", StrUtil.getLineSeparator(), msg));
if (msg instanceof Closeable) {
try {
((Closeable) msg).close();
} catch (Throwable t) {
c_logger.error(StrUtil.join(session, "Failed to close message: ", msg), t);
}
}
}
@Override
public void onSessionReadTimedOut(ISession session) {
Object msg = session.withdraw(IoConstants.FID_TCPCLIENT);
c_logger.warn(StrUtil.join(session, ": READ_TIMEOUT, ", StrUtil.getLineSeparator(), msg));
if (msg instanceof Closeable) {
try {
((Closeable) msg).close();
} catch (Throwable t) {
c_logger.error(
StrUtil.join(session, "Failed to close message: ", StrUtil.getLineSeparator(), msg), t);
}
}
}
@Override
public void onChannelException(IChannel channel, Throwable t) {
try {
c_logger.error(
StrUtil.join(channel, "(remoteAddr=", channel.remoteAddress(), ") got an error"), t);
final ISessionListener<I, O> listener = m_listener;
if (listener != null) listener.onSessionException(channel, t);
} catch (Throwable e) {
c_logger.error(
StrUtil.join(channel, "(remoteAddr=", channel.remoteAddress(), ") Unexpected Error: "),
e);
} finally {
channel.close();
}
}
@Override
protected void stopInternal(int options) {
c_logger.info(StrUtil.join("Stopping ", this, "..."));
m_stopped = true;
try {
m_ssc.close();
} catch (Throwable t) {
c_logger.error(StrUtil.join(this, " failed to close ServerSocketChannel"), t);
}
m_ssc = null;
if (options == 0) {
closeChannels();
}
c_logger.info(StrUtil.join(this, " stopped"));
}
@Override
public void onSessionException(ISession session, Throwable t) {
Object msg = session.withdraw(IoConstants.FID_TCPCLIENT);
if (msg == null) msg = session.detach();
if (msg == null) c_logger.error(StrUtil.join(session, " got an error"), t);
else {
c_logger.error(StrUtil.join(session, " got an error: ", StrUtil.getLineSeparator(), msg), t);
if (msg instanceof Closeable) {
try {
((Closeable) msg).close();
} catch (Throwable e) {
c_logger.error(
StrUtil.join(session, "Failed to close: ", StrUtil.getLineSeparator(), msg), e);
}
}
}
}
@Override
public void onMessage(IMessage message) {
Object attachment = message.attachment();
if (attachment == null) {
c_logger.warn(StrUtil.join(this, " consumes a null message: ", message));
message.close();
return;
}
m_ss.write(null, message);
}
@Override
public void write(ISession session, O msg) {
final ConcurrentHashMap<Long, IChannel> channels = m_channels;
if (channels == null) return;
final IChannel channel = channels.get(session.id());
if (channel != null) {
channel.write(msg);
return;
}
final Object remoteAddr = session.remoteAddress();
c_logger.warn(
StrUtil.join(
session,
"(remoteAddr=",
remoteAddr,
") failed to send(channel closed): ",
StrUtil.getLineSeparator(),
msg));
if (msg instanceof AutoCloseable) {
try {
((AutoCloseable) msg).close();
} catch (Throwable t) {
c_logger.error(
StrUtil.join(
session,
"(remoteAddr=",
remoteAddr,
") failed to close message: ",
StrUtil.getLineSeparator(),
msg),
t);
}
}
}
@Override
public void onChannelClosed(IChannel channel) {
c_logger.debug("{}(remoteAddr={}): CLOSED", channel, channel.remoteAddress());
final ConcurrentHashMap<Long, IChannel> channels = m_channels;
if (channels != null) channels.remove(channel.id());
final ISessionListener<I, O> listener = m_listener;
if (listener != null) {
try {
listener.onSessionClosed(channel);
} catch (Throwable t) {
c_logger.error(
StrUtil.join(channel, "(remoteAddr=", channel.remoteAddress(), ") Unexpected Error: "),
t);
}
}
}
@Override
protected boolean updateInternal(Map<String, ?> properties) throws Exception {
final String id = (String) properties.get(IoConstants.SERVICE_ID);
m_caption = StrUtil.join("TcpServer[", id, "]");
final Configuration newConf = new Configuration();
newConf.initialize(properties);
final Configuration oldConf = m_conf;
updateFilters(newConf);
final boolean changed = oldConf.isMandatoryChanged(newConf);
if (!changed) {
final int timeout = newConf.sessionIdleTimeoutInSeconds();
if (timeout == 0) closeChannels();
}
m_conf = newConf;
return changed;
}