/*
* 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.springframework.web.socket.adapter.jetty;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketClose;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketConnect;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketError;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketFrame;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
import org.eclipse.jetty.websocket.api.annotations.WebSocket;
import org.eclipse.jetty.websocket.api.extensions.Frame;
import org.eclipse.jetty.websocket.common.OpCode;
import org.springframework.util.Assert;
import org.springframework.web.socket.BinaryMessage;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.PongMessage;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator;
/**
* Adapts {@link WebSocketHandler} to the Jetty 9 WebSocket API.
*
* @author Rossen Stoyanchev
* @since 4.0
*/
@WebSocket
public class JettyWebSocketHandlerAdapter {
private static final Log logger = LogFactory.getLog(JettyWebSocketHandlerAdapter.class);
private final WebSocketHandler webSocketHandler;
private final JettyWebSocketSession wsSession;
public JettyWebSocketHandlerAdapter(WebSocketHandler webSocketHandler, JettyWebSocketSession wsSession) {
Assert.notNull(webSocketHandler, "webSocketHandler must not be null");
Assert.notNull(wsSession, "wsSession must not be null");
this.webSocketHandler = webSocketHandler;
this.wsSession = wsSession;
}
@OnWebSocketConnect
public void onWebSocketConnect(Session session) {
try {
this.wsSession.initializeNativeSession(session);
this.webSocketHandler.afterConnectionEstablished(this.wsSession);
}
catch (Throwable t) {
ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
}
}
@OnWebSocketMessage
public void onWebSocketText(String payload) {
TextMessage message = new TextMessage(payload);
try {
this.webSocketHandler.handleMessage(this.wsSession, message);
}
catch (Throwable t) {
ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
}
}
@OnWebSocketMessage
public void onWebSocketBinary(byte[] payload, int offset, int length) {
BinaryMessage message = new BinaryMessage(payload, offset, length, true);
try {
this.webSocketHandler.handleMessage(this.wsSession, message);
}
catch (Throwable t) {
ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
}
}
@OnWebSocketFrame
public void onWebSocketFrame(Frame frame) {
if (OpCode.PONG == frame.getOpCode()) {
PongMessage message = new PongMessage(frame.getPayload());
try {
this.webSocketHandler.handleMessage(this.wsSession, message);
}
catch (Throwable t) {
ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
}
}
}
@OnWebSocketClose
public void onWebSocketClose(int statusCode, String reason) {
CloseStatus closeStatus = new CloseStatus(statusCode, reason);
try {
this.webSocketHandler.afterConnectionClosed(this.wsSession, closeStatus);
}
catch (Throwable t) {
logger.error("Unhandled error for " + this.wsSession, t);
}
}
@OnWebSocketError
public void onWebSocketError(Throwable cause) {
try {
this.webSocketHandler.handleTransportError(this.wsSession, cause);
}
catch (Throwable t) {
ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
}
}
}