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java/org/apache/tomcat/websocket/server/WsPerSessionServerEndpointConfig.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.tomcat.websocket.server;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import javax.websocket.Decoder;
+import javax.websocket.Encoder;
+import javax.websocket.Extension;
+import javax.websocket.server.ServerEndpointConfig;
+
+/**
+ * Wraps the provided {@link ServerEndpointConfig} and provides a per session
+ * view - the difference being that the map returned by {@link
+ * #getUserProperties()} is unique to this instance rather than shared with the
+ * wrapped {@link ServerEndpointConfig}.
+ */
+class WsPerSessionServerEndpointConfig implements ServerEndpointConfig {
+
+    private final ServerEndpointConfig perEndpointConfig;
+    private final Map<String,Object> perSessionUserProperties =
+            new ConcurrentHashMap<>();
+
+    WsPerSessionServerEndpointConfig(ServerEndpointConfig perEndpointConfig) {
+        this.perEndpointConfig = perEndpointConfig;
+        perSessionUserProperties.putAll(perEndpointConfig.getUserProperties());
+    }
+
+    @Override
+    public List<Class<? extends Encoder>> getEncoders() {
+        return perEndpointConfig.getEncoders();
+    }
+
+    @Override
+    public List<Class<? extends Decoder>> getDecoders() {
+        return perEndpointConfig.getDecoders();
+    }
+
+    @Override
+    public Map<String,Object> getUserProperties() {
+        return perSessionUserProperties;
+    }
+
+    @Override
+    public Class<?> getEndpointClass() {
+        return perEndpointConfig.getEndpointClass();
+    }
+
+    @Override
+    public String getPath() {
+        return perEndpointConfig.getPath();
+    }
+
+    @Override
+    public List<String> getSubprotocols() {
+        return perEndpointConfig.getSubprotocols();
+    }
+
+    @Override
+    public List<Extension> getExtensions() {
+        return perEndpointConfig.getExtensions();
+    }
+
+    @Override
+    public Configurator getConfigurator() {
+        return perEndpointConfig.getConfigurator();
+    }
+}