MonitorSocketWrapper.java

package sockslib.common.net;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.SocketException;
import java.nio.channels.SocketChannel;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * The class <code>MonitorSocketWrapper</code> is wrapper of {@link java.net.Socket}.
 *
 * @author Youchao Feng
 * @version 1.0
 * @date Sep 21, 2015 11:40 AM
 */
public class MonitorSocketWrapper extends Socket {

  private Socket originalSocket;
  private List<SocketMonitor> monitors;
  private InputStream inputStream = null;
  private OutputStream outputStream = null;

  public MonitorSocketWrapper(Socket socket, SocketMonitor... monitors) {
    this.originalSocket = checkNotNull(socket, "Argument [socket] may not be null");
    this.monitors = new ArrayList<>(monitors.length);
    Collections.addAll(this.monitors, monitors);
  }

  public MonitorSocketWrapper(Socket socket, List<SocketMonitor> monitors) {
    this.originalSocket = checkNotNull(socket, "Argument [socket] may not be null");
    this.monitors = checkNotNull(monitors, "Arugment [monitors] may not be null");
  }

  public MonitorSocketWrapper(Socket socket) {
    this.originalSocket = checkNotNull(socket, "Argument [socket] may not be null");
  }

  public static Socket wrap(Socket socket, SocketMonitor... monitors) {
    return new MonitorSocketWrapper(socket, monitors);
  }

  public static Socket wrap(Socket socket, List<SocketMonitor> monitors) {
    return new MonitorSocketWrapper(socket, monitors);
  }

  public MonitorSocketWrapper addMonitor(SocketMonitor monitor) {
    if (monitors == null) {
      monitors = new ArrayList<>(1);
    }
    monitors.add(monitor);
    return this;
  }

  public MonitorSocketWrapper removeMonitor(SocketMonitor monitor) {
    if (monitors != null) {
      monitors.remove(monitor);
    }
    return this;
  }



  public Socket getOriginalSocket() {
    return originalSocket;
  }

  public void setOriginalSocket(Socket originalSocket) {
    this.originalSocket = originalSocket;
  }

  public List<SocketMonitor> getMonitors() {
    return monitors;
  }

  public void setMonitors(List<SocketMonitor> monitors) {
    this.monitors = monitors;
  }

  @Override
  public void connect(SocketAddress endpoint) throws IOException {
    originalSocket.connect(endpoint);
  }

  @Override
  public void connect(SocketAddress endpoint, int timeout) throws IOException {
    originalSocket.connect(endpoint, timeout);
  }

  @Override
  public void bind(SocketAddress bindpoint) throws IOException {
    originalSocket.bind(bindpoint);
  }

  @Override
  public InetAddress getInetAddress() {
    return originalSocket.getInetAddress();
  }

  @Override
  public InetAddress getLocalAddress() {
    return originalSocket.getLocalAddress();
  }

  @Override
  public int getPort() {
    return originalSocket.getPort();
  }

  @Override
  public int getLocalPort() {
    return originalSocket.getLocalPort();
  }

  @Override
  public SocketAddress getRemoteSocketAddress() {
    return originalSocket.getRemoteSocketAddress();
  }

  @Override
  public SocketAddress getLocalSocketAddress() {
    return originalSocket.getLocalSocketAddress();
  }

  @Override
  public SocketChannel getChannel() {
    return originalSocket.getChannel();
  }

  @Override
  public InputStream getInputStream() throws IOException {
    if (inputStream == null) {
      inputStream = getInputStreamFromSocket();
    }
    return inputStream;
  }

  public InputStream getInputStreamFromSocket() throws IOException {
    List<InputStreamMonitor> inputStreamMonitors = new ArrayList<>(monitors.size());
    if (monitors != null) {
      for (SocketMonitor socketMonitor : monitors) {
        inputStreamMonitors.add(socketMonitor);
      }
    }
    return MonitorInputStreamWrapper.wrap(originalSocket.getInputStream(), inputStreamMonitors);
  }

  @Override
  public OutputStream getOutputStream() throws IOException {
    if (outputStream == null) {
      outputStream = getOutputStreamFromSocket();
    }
    return outputStream;
  }

  public OutputStream getOutputStreamFromSocket() throws IOException {
    List<OutputStreamMonitor> outputStreamMonitors = new ArrayList<>(monitors.size());
    if (monitors != null) {
      for (SocketMonitor socketMonitor : monitors) {
        outputStreamMonitors.add(socketMonitor);
      }
    }
    return MonitorOutputStreamWrapper.wrap(originalSocket.getOutputStream(), outputStreamMonitors);
  }

  @Override
  public boolean getTcpNoDelay() throws SocketException {
    return originalSocket.getTcpNoDelay();
  }

  @Override
  public void setTcpNoDelay(boolean on) throws SocketException {
    originalSocket.setTcpNoDelay(on);
  }

  @Override
  public void setSoLinger(boolean on, int linger) throws SocketException {
    originalSocket.setSoLinger(on, linger);
  }

  @Override
  public int getSoLinger() throws SocketException {
    return originalSocket.getSoLinger();
  }

  @Override
  public void sendUrgentData(int data) throws IOException {
    originalSocket.sendUrgentData(data);
  }

  @Override
  public boolean getOOBInline() throws SocketException {
    return originalSocket.getOOBInline();
  }

  @Override
  public void setOOBInline(boolean on) throws SocketException {
    originalSocket.setOOBInline(on);
  }

  @Override
  public synchronized int getSoTimeout() throws SocketException {
    return originalSocket.getSoTimeout();
  }

  @Override
  public synchronized void setSoTimeout(int timeout) throws SocketException {
    originalSocket.setSoTimeout(timeout);
  }

  @Override
  public synchronized int getSendBufferSize() throws SocketException {
    return originalSocket.getSendBufferSize();
  }

  @Override
  public synchronized void setSendBufferSize(int size) throws SocketException {
    originalSocket.setSendBufferSize(size);
  }

  @Override
  public synchronized int getReceiveBufferSize() throws SocketException {
    return originalSocket.getReceiveBufferSize();
  }

  @Override
  public synchronized void setReceiveBufferSize(int size) throws SocketException {
    originalSocket.setReceiveBufferSize(size);
  }

  @Override
  public boolean getKeepAlive() throws SocketException {
    return originalSocket.getKeepAlive();
  }

  @Override
  public void setKeepAlive(boolean on) throws SocketException {
    originalSocket.setKeepAlive(on);
  }

  @Override
  public int getTrafficClass() throws SocketException {
    return originalSocket.getTrafficClass();
  }

  @Override
  public void setTrafficClass(int tc) throws SocketException {
    originalSocket.setTrafficClass(tc);
  }

  @Override
  public boolean getReuseAddress() throws SocketException {
    return originalSocket.getReuseAddress();
  }

  @Override
  public void setReuseAddress(boolean on) throws SocketException {
    originalSocket.setReuseAddress(on);
  }

  @Override
  public synchronized void close() throws IOException {
    originalSocket.close();
  }

  @Override
  public void shutdownInput() throws IOException {
    originalSocket.shutdownInput();
  }

  @Override
  public void shutdownOutput() throws IOException {
    originalSocket.shutdownOutput();
  }

  @Override
  public String toString() {
    return originalSocket.toString();
  }

  @Override
  public boolean isConnected() {
    return originalSocket.isConnected();
  }

  @Override
  public boolean isBound() {
    return originalSocket.isBound();
  }

  @Override
  public boolean isClosed() {
    return originalSocket.isClosed();
  }

  @Override
  public boolean isInputShutdown() {
    return originalSocket.isInputShutdown();
  }

  @Override
  public boolean isOutputShutdown() {
    return originalSocket.isOutputShutdown();
  }

  @Override
  public void setPerformancePreferences(int connectionTime, int latency, int bandwidth) {
    originalSocket.setPerformancePreferences(connectionTime, latency, bandwidth);
  }

  @Override
  public int hashCode() {
    return originalSocket.hashCode();
  }

  @Override
  public boolean equals(Object obj) {
    return originalSocket.equals(obj);
  }

}