com.xeiam.xchange.service.streaming.WebSocketEventProducer Maven / Gradle / Ivy

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Core functionality used by all other modules.
There is a newer version: 3.1.0
/**
 * Copyright (C) 2013 Xeiam LLC http://xeiam.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.xeiam.xchange.service.streaming;

import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.handshake.ServerHandshake;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;

/**
 * @author timmolter
 */
public class WebSocketEventProducer extends WebSocketClient {

  private final Logger logger = LoggerFactory.getLogger(WebSocketEventProducer.class);

  private final ExchangeEventListener exchangeEventListener;

  /**
   * Constructor
   * 
   * @param url
   * @param exchangeEventProducer
   * @throws URISyntaxException
   */
  public WebSocketEventProducer(String url, ExchangeEventListener exchangeEventListener, Map headers)
          throws URISyntaxException {

    super(new URI(url), new Draft_17(), headers, 0);
    this.exchangeEventListener = exchangeEventListener;

  }

  @Override
  public void onOpen(ServerHandshake handshakedata) {

    // System.out.println("opened connection");
    // if you pan to refuse connection based on ip or httpfields overload: onWebsocketHandshakeReceivedAsClient

    logger.debug("onOpen");
    ExchangeEvent exchangeEvent = new JsonWrappedExchangeEvent(ExchangeEventType.CONNECT, "connected");
    exchangeEventListener.handleEvent(exchangeEvent);
  }

  @Override
  public void onMessage(String message) {

    // send( "you said: " + message );

    // logger.debug(onMessage);
    ExchangeEvent exchangeEvent = new DefaultExchangeEvent(ExchangeEventType.MESSAGE, message);
    exchangeEventListener.handleEvent(exchangeEvent);
  }

  @Override
  public void onClose(int code, String reason, boolean remote) {

    // The codecodes are documented in class org.java_websocket.framing.CloseFrame
    // System.out.println("Connection closed by " + (remote ? "remote peer" : "us"));
    // System.out.println("reason= " + reason);

    logger.debug("onClose");
    ExchangeEvent exchangeEvent = new JsonWrappedExchangeEvent(ExchangeEventType.DISCONNECT, "disconnected");
    exchangeEventListener.handleEvent(exchangeEvent);
  }

  @Override
  public void onError(Exception ex) {

    // ex.printStackTrace();
    // if the error is fatal then onClose will be called additionally

    logger.error("onError: {}", ex.getMessage());
    ExchangeEvent exchangeEvent = new JsonWrappedExchangeEvent(ExchangeEventType.ERROR, ex.getMessage());
    exchangeEventListener.handleEvent(exchangeEvent);
  }

}