com.xzixi.websocket.interceptablewebsocket.interceptor.FromClientExecutionChain Maven / Gradle / Ivy

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支持消息拦截的websocket

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package com.xzixi.websocket.interceptablewebsocket.interceptor;

import com.xzixi.websocket.interceptablewebsocket.util.MessageFromClient;
import org.springframework.messaging.MessageChannel;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.messaging.StompSubProtocolHandler;

import java.security.Principal;
import java.util.List;

/**
 * @see FromClientInterceptor
 * @author 薛凌康
 */
public class FromClientExecutionChain {

    private List interceptors;

    private int interceptorIndex = -1;

    public FromClientExecutionChain(List interceptors) {
        Assert.notNull(interceptors, "interceptors不能为null");
        this.interceptors = interceptors;
    }

    public boolean applyPreHandle(WebSocketSession session, Principal principal, MessageFromClient message, MessageChannel outputChannel, StompSubProtocolHandler handler) {
        if (!ObjectUtils.isEmpty(interceptors)) {
            for (int i=0; i= 0; i--) {
                FromClientInterceptor interceptor = interceptors.get(i);
                interceptor.postHandle(session, principal, message, outputChannel, handler);
            }
        }
    }

}