StompChatHandler.java — netty Source File

Source Code

/*
 * Copyright 2020 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.example.stomp.websocket;

import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.DecoderResult;
import io.netty.handler.codec.stomp.DefaultStompFrame;
import io.netty.handler.codec.stomp.StompCommand;
import io.netty.handler.codec.stomp.StompFrame;
import io.netty.util.CharsetUtil;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import static io.netty.handler.codec.stomp.StompHeaders.*;

@Sharable
public class StompChatHandler extends SimpleChannelInboundHandler<StompFrame> {

    private final ConcurrentMap<String, Set<StompSubscription>> chatDestinations =
            new ConcurrentHashMap<String, Set<StompSubscription>>();

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, StompFrame inboundFrame) throws Exception {
        DecoderResult decoderResult = inboundFrame.decoderResult();
        if (decoderResult.isFailure()) {
            sendErrorFrame("rejected frame", decoderResult.toString(), ctx);
            return;
        }

        switch (inboundFrame.command()) {
        case STOMP:
        case CONNECT:
            onConnect(ctx, inboundFrame);
            break;
        case SUBSCRIBE:
            onSubscribe(ctx, inboundFrame);
            break;
// ... (136 more lines)