org.bitcoinrt.client.JettyMtgoxClient.java Source code

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Here is the source code for org.bitcoinrt.client.JettyMtgoxClient.java

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/*
 * Copyright 2002-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.bitcoinrt.client;

import java.io.IOException;
import java.net.URI;

import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.WebSocketListener;
import org.eclipse.jetty.websocket.client.WebSocketClient;
import org.springframework.integration.MessageChannel;

/**
 * Jetty 9 WebSocket client implementation.
 *
 * @see http://webtide.intalio.com/2012/10/jetty-9-updated-websocket-api/
 * @see http://download.eclipse.org/jetty/9.0.0.v20130308/apidocs/org/eclipse/jetty/websocket/client/WebSocketClient.html
 */
public class JettyMtgoxClient extends AbstractMtgoxClient {

    private final WebSocketClient webSocketClient;

    public JettyMtgoxClient(MessageChannel outputChannel) {
        super(outputChannel);
        this.webSocketClient = new WebSocketClient();
    }

    @Override
    public void start() {
        try {
            webSocketClient.setConnectTimeout(10000);
            webSocketClient.start();
            webSocketClient.connect(new MtgoxWebSocket(), new URI(MTGOX_URL));
        } catch (Exception ex) {
            logger.error("Failed to start WebSocketClientFactory", ex);
        }
    }

    @Override
    public void stop() {
        try {
            if (this.webSocketClient != null) {
                this.webSocketClient.stop();
            }
        } catch (Exception ex) {
            logger.error("Failed to stop WebSocketClientFactory", ex);
        }
    }

    private class MtgoxWebSocket implements WebSocketListener {

        @Override
        public void onWebSocketBinary(byte[] payload, int offset, int len) {
            throw new IllegalStateException("Not implemented.");
        }

        @Override
        public void onWebSocketClose(int statusCode, String reason) {
            String log = "Disconnected from {} with closeCode={} and message={}";
            logger.debug(log, new Object[] { MTGOX_URL, statusCode, reason });
        }

        @Override
        public void onWebSocketConnect(Session session) {
            logger.debug("Connected to {}", MTGOX_URL);
            logger.debug("Unsubscribing...");
            try {
                session.getRemote()
                        .sendString("{\"op\":\"unsubscribe\",\"channel\":\"" + MTGOX_TICKER_CHANNEL + "\"}");
                session.getRemote()
                        .sendString("{\"op\":\"unsubscribe\",\"channel\":\"" + MTGOX_DEPTH_CHANNEL + "\"}");
            } catch (IOException ex) {
                logger.error("Unsubscribe failed", ex);
            }
            logger.debug("Waiting for messages...");
        }

        @Override
        public void onWebSocketError(Throwable cause) {
            throw new IllegalStateException(cause);
        }

        @Override
        public void onWebSocketText(String message) {
            // Delegate to the parent
            onMessage(message);
        }
    }
}