/*
* Copyright 2012-2013 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 samples.websocket.echo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.handler.TextWebSocketHandler;
/**
* Echo messages by implementing a Spring {@link WebSocketHandler} abstraction.
*/
public class EchoWebSocketHandler extends TextWebSocketHandler {
private static Logger logger = LoggerFactory.getLogger(EchoWebSocketHandler.class);
private final EchoService echoService;
@Autowired
public EchoWebSocketHandler(EchoService echoService) {
this.echoService = echoService;
}
@Override
public void afterConnectionEstablished(WebSocketSession session) {
logger.debug("Opened new session in instance " + this);
}
@Override
public void handleTextMessage(WebSocketSession session, TextMessage message)
throws Exception {
String echoMessage = this.echoService.getMessage(message.getPayload());
logger.debug(echoMessage);
session.sendMessage(new TextMessage(echoMessage));
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception)
throws Exception {
session.close(CloseStatus.SERVER_ERROR);
}
}