1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements.  See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License.  You may obtain a copy of the License at
8  *
9  *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 package nginx.unit.websocket.server;
18 
19 import java.util.List;
20 import java.util.Map;
21 import java.util.concurrent.ConcurrentHashMap;
22 
23 import javax.websocket.Decoder;
24 import javax.websocket.Encoder;
25 import javax.websocket.Extension;
26 import javax.websocket.server.ServerEndpointConfig;
27 
28 /**
29  * Wraps the provided {@link ServerEndpointConfig} and provides a per session
30  * view - the difference being that the map returned by {@link
31  * #getUserProperties()} is unique to this instance rather than shared with the
32  * wrapped {@link ServerEndpointConfig}.
33  */
34 class WsPerSessionServerEndpointConfig implements ServerEndpointConfig {
35 
36     private final ServerEndpointConfig perEndpointConfig;
37     private final Map<String,Object> perSessionUserProperties =
38             new ConcurrentHashMap<>();
39 
WsPerSessionServerEndpointConfig(ServerEndpointConfig perEndpointConfig)40     WsPerSessionServerEndpointConfig(ServerEndpointConfig perEndpointConfig) {
41         this.perEndpointConfig = perEndpointConfig;
42         perSessionUserProperties.putAll(perEndpointConfig.getUserProperties());
43     }
44 
45     @Override
getEncoders()46     public List<Class<? extends Encoder>> getEncoders() {
47         return perEndpointConfig.getEncoders();
48     }
49 
50     @Override
getDecoders()51     public List<Class<? extends Decoder>> getDecoders() {
52         return perEndpointConfig.getDecoders();
53     }
54 
55     @Override
getUserProperties()56     public Map<String,Object> getUserProperties() {
57         return perSessionUserProperties;
58     }
59 
60     @Override
getEndpointClass()61     public Class<?> getEndpointClass() {
62         return perEndpointConfig.getEndpointClass();
63     }
64 
65     @Override
getPath()66     public String getPath() {
67         return perEndpointConfig.getPath();
68     }
69 
70     @Override
getSubprotocols()71     public List<String> getSubprotocols() {
72         return perEndpointConfig.getSubprotocols();
73     }
74 
75     @Override
getExtensions()76     public List<Extension> getExtensions() {
77         return perEndpointConfig.getExtensions();
78     }
79 
80     @Override
getConfigurator()81     public Configurator getConfigurator() {
82         return perEndpointConfig.getConfigurator();
83     }
84 }
85