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17 package org.springframework.web.socket.adapter.jetty;
18
19 import java.nio.ByteBuffer;
20
21 import org.apache.commons.logging.Log;
22 import org.apache.commons.logging.LogFactory;
23 import org.eclipse.jetty.websocket.api.Session;
24 import org.eclipse.jetty.websocket.api.annotations.OnWebSocketClose;
25 import org.eclipse.jetty.websocket.api.annotations.OnWebSocketConnect;
26 import org.eclipse.jetty.websocket.api.annotations.OnWebSocketError;
27 import org.eclipse.jetty.websocket.api.annotations.OnWebSocketFrame;
28 import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
29 import org.eclipse.jetty.websocket.api.annotations.WebSocket;
30 import org.eclipse.jetty.websocket.api.extensions.Frame;
31 import org.eclipse.jetty.websocket.common.OpCode;
32
33 import org.springframework.util.Assert;
34 import org.springframework.web.socket.BinaryMessage;
35 import org.springframework.web.socket.CloseStatus;
36 import org.springframework.web.socket.PongMessage;
37 import org.springframework.web.socket.TextMessage;
38 import org.springframework.web.socket.WebSocketHandler;
39 import org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator;
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48 @WebSocket
49 public class JettyWebSocketHandlerAdapter {
50
51 private static final ByteBuffer EMPTY_PAYLOAD = ByteBuffer.wrap(new byte[0]);
52
53 private static final Log logger = LogFactory.getLog(JettyWebSocketHandlerAdapter.class);
54
55
56 private final WebSocketHandler webSocketHandler;
57
58 private final JettyWebSocketSession wsSession;
59
60
61 public JettyWebSocketHandlerAdapter(WebSocketHandler webSocketHandler, JettyWebSocketSession wsSession) {
62 Assert.notNull(webSocketHandler, "webSocketHandler must not be null");
63 Assert.notNull(wsSession, "wsSession must not be null");
64 this.webSocketHandler = webSocketHandler;
65 this.wsSession = wsSession;
66 }
67
68
69 @OnWebSocketConnect
70 public void onWebSocketConnect(Session session) {
71 try {
72 this.wsSession.initializeNativeSession(session);
73 this.webSocketHandler.afterConnectionEstablished(this.wsSession);
74 }
75 catch (Throwable t) {
76 ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
77 }
78 }
79
80 @OnWebSocketMessage
81 public void onWebSocketText(String payload) {
82 TextMessage message = new TextMessage(payload);
83 try {
84 this.webSocketHandler.handleMessage(this.wsSession, message);
85 }
86 catch (Throwable t) {
87 ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
88 }
89 }
90
91 @OnWebSocketMessage
92 public void onWebSocketBinary(byte[] payload, int offset, int length) {
93 BinaryMessage message = new BinaryMessage(payload, offset, length, true);
94 try {
95 this.webSocketHandler.handleMessage(this.wsSession, message);
96 }
97 catch (Throwable t) {
98 ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
99 }
100 }
101
102 @OnWebSocketFrame
103 public void onWebSocketFrame(Frame frame) {
104 if (OpCode.PONG == frame.getOpCode()) {
105 ByteBuffer payload = frame.getPayload() != null ? frame.getPayload() : EMPTY_PAYLOAD;
106 PongMessage message = new PongMessage(payload);
107 try {
108 this.webSocketHandler.handleMessage(this.wsSession, message);
109 }
110 catch (Throwable t) {
111 ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
112 }
113 }
114 }
115
116 @OnWebSocketClose
117 public void onWebSocketClose(int statusCode, String reason) {
118 CloseStatus closeStatus = new CloseStatus(statusCode, reason);
119 try {
120 this.webSocketHandler.afterConnectionClosed(this.wsSession, closeStatus);
121 }
122 catch (Throwable t) {
123 logger.error("Unhandled error for " + this.wsSession, t);
124 }
125 }
126
127 @OnWebSocketError
128 public void onWebSocketError(Throwable cause) {
129 try {
130 this.webSocketHandler.handleTransportError(this.wsSession, cause);
131 }
132 catch (Throwable t) {
133 ExceptionWebSocketHandlerDecorator.tryCloseWithError(this.wsSession, t, logger);
134 }
135 }
136
137 }