ws.wamp.jawampa.transport.netty.WampDeserializationHandler Maven / Gradle / Ivy

/*
 * Copyright 2014 Matthias Einwag
 *
 * The jawampa authors license 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 ws.wamp.jawampa.transport.netty;

import java.util.List;

import ws.wamp.jawampa.WampMessages.WampMessage;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;

import io.netty.buffer.ByteBufInputStream;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageDecoder;
import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
import io.netty.handler.codec.http.websocketx.CloseWebSocketFrame;
import io.netty.handler.codec.http.websocketx.PongWebSocketFrame;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import ws.wamp.jawampa.WampSerialization;

public class WampDeserializationHandler extends MessageToMessageDecoder {
    
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(WampDeserializationHandler.class);
    
    enum ReadState {
        Closed,
        Reading,
        Error
    }
    
    ReadState readState = ReadState.Closed;

    final WampSerialization serialization;
    
    public WampSerialization serialization() {
        return serialization;
    }
    
    public WampDeserializationHandler(WampSerialization serialization) {
        this.serialization = serialization;
    }
    
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) {
        readState = ReadState.Reading;
    }
    
    @Override
    public void channelActive(ChannelHandlerContext ctx) {
        readState = ReadState.Reading;
        ctx.fireChannelActive();
    }
    
    @Override
    public void channelInactive(ChannelHandlerContext ctx) {
        readState = ReadState.Closed;
        ctx.fireChannelInactive();
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, WebSocketFrame frame, List