ch.rasc.wampspring.demo.client.Subscriber.java Source code

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Here is the source code for ch.rasc.wampspring.demo.client.Subscriber.java

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/**
 * Copyright 2015-2015 Ralph Schaer <ralphschaer@gmail.com>
 *
 * 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 ch.rasc.wampspring.demo.client;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.client.WebSocketClient;
import org.springframework.web.socket.client.WebSocketConnectionManager;
import org.springframework.web.socket.client.standard.StandardWebSocketClient;
import org.springframework.web.socket.handler.TextWebSocketHandler;

import ch.rasc.wampspring.message.EventMessage;
import ch.rasc.wampspring.message.SubscribeMessage;
import ch.rasc.wampspring.message.WampMessage;
import ch.rasc.wampspring.message.WelcomeMessage;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.MappingJsonFactory;
import com.fasterxml.jackson.databind.ObjectMapper;

@Configuration
public class Subscriber {

    private final static CountDownLatch latch = new CountDownLatch(1_000_000);

    @Bean
    public WebSocketClient webSocketClient() {
        return new StandardWebSocketClient();
    }

    @Bean
    public SubscribeWebSocketHandler clientWebSocketHandler() {
        return new SubscribeWebSocketHandler();
    }

    @Bean
    public WebSocketConnectionManager webSocketConnectionManager(WebSocketClient webSocketClient,
            WebSocketHandler webSocketHandler) {
        WebSocketConnectionManager manager = new WebSocketConnectionManager(webSocketClient, webSocketHandler,
                "ws://localhost:8080/wamp");
        manager.setAutoStartup(true);
        return manager;
    }

    public static void main(String[] args) throws InterruptedException {
        try (AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
                Subscriber.class)) {

            if (!latch.await(3, TimeUnit.MINUTES)) {
                System.out.println("SOMETHING WENT WRONG");
            }
            System.out.println("THE END");
        }
    }

    static class SubscribeWebSocketHandler extends TextWebSocketHandler {

        private final JsonFactory jsonFactory = new MappingJsonFactory(new ObjectMapper());

        @Override
        protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
            WampMessage wampMessage = WampMessage.fromJson(this.jsonFactory, message.getPayload());

            if (wampMessage instanceof WelcomeMessage) {
                System.out.println("WELCOME received: " + wampMessage);

                SubscribeMessage subscribe = new SubscribeMessage("/test/myqueue");
                session.sendMessage(new TextMessage(subscribe.toJson(this.jsonFactory)));
            } else if (wampMessage instanceof EventMessage) {
                latch.countDown();
            }

        }
    }

}