ch.rasc.wampspring.session.SessionRepositoryHandshakeInterceptor.java Source code

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Here is the source code for ch.rasc.wampspring.session.SessionRepositoryHandshakeInterceptor.java

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/*
 * Copyright 2015 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 ch.rasc.wampspring.session;

import java.util.Map;

import javax.servlet.http.HttpSession;

import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.session.ExpiringSession;
import org.springframework.session.Session;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.server.HandshakeInterceptor;

/**
 * Associates the {@link Session#getId()} with the WebSocket Session attributes when the
 * handshake is performed. This is later used when intercepting messages to ensure the
 * {@link ExpiringSession#getLastAccessedTime()} is updated.
 *
 * @author Rob Winch
 * @author Ralph Schaer
 */
public final class SessionRepositoryHandshakeInterceptor implements HandshakeInterceptor {

    @Override
    public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
            WebSocketHandler wsHandler, Map<String, Object> attributes) throws Exception {
        if (request instanceof ServletServerHttpRequest) {
            ServletServerHttpRequest servletRequest = (ServletServerHttpRequest) request;
            HttpSession session = servletRequest.getServletRequest().getSession(false);
            if (session != null) {
                attributes.put(SessionSupport.SPRING_SESSION_ID_ATTR_NAME, session.getId());
            }
        }
        return true;
    }

    @Override
    public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler,
            Exception exception) {
        // nothing here
    }
}