package one.nio.server;
import one.nio.net.Selector;
import one.nio.net.Session;
import one.nio.net.Socket;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.IOException;
import java.net.InetAddress;
import java.util.Random;
final class AcceptorThread extends Thread {
private static final Log log = LogFactory.getLog(AcceptorThread.class);
final Server server;
final InetAddress address;
final int port;
final Socket serverSocket;
final Random random;
long acceptedSessions;
AcceptorThread(Server server, InetAddress address, int port, int backlog, int recvBuf, int sendBuf, boolean defer) throws IOException {
super("NIO Acceptor " + address + ":" + port);
setUncaughtExceptionHandler(server);
this.server = server;
this.address = address;
this.port = port;
this.serverSocket = Socket.createServerSocket();
this.random = new Random();
if (recvBuf != 0) {
serverSocket.setRecvBuffer(recvBuf);
}
if (sendBuf != 0) {
serverSocket.setSendBuffer(sendBuf);
}
if (defer) {
serverSocket.setDeferAccept(true);
}
serverSocket.setNoDelay(true);
serverSocket.setReuseAddr(true);
serverSocket.bind(address, port, backlog);
}
void shutdown() {
serverSocket.close();
try {
join();
} catch (InterruptedException e) {
// Ignore
}
}
@Override
public void run() {
while (server.isRunning()) {
Socket socket = null;
try {
socket = serverSocket.accept();
socket.setBlocking(false);
Session session = server.createSession(socket);
getSmallestSelector().register(session);
acceptedSessions++;
} catch (Exception e) {
if (server.isRunning()) {
log.error("Cannot accept incoming connection", e);
}
if (socket != null) {
socket.close();
}
}
}
}
private Selector getSmallestSelector() {
SelectorThread[] selectors = server.selectors;
Selector a = selectors[random.nextInt(selectors.length)].selector;
Selector b = selectors[random.nextInt(selectors.length)].selector;
return a.size() < b.size() ? a : b;
}
}