| /* |
| * 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.tinkerpop.gremlin.driver.handler; |
| |
| import io.netty.handler.codec.http.websocketx.PongWebSocketFrame; |
| import org.apache.tinkerpop.gremlin.driver.MessageSerializer; |
| import org.apache.tinkerpop.gremlin.driver.ser.MessageTextSerializer; |
| import io.netty.channel.ChannelHandler; |
| 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.TextWebSocketFrame; |
| import io.netty.handler.codec.http.websocketx.WebSocketFrame; |
| import io.netty.util.ReferenceCountUtil; |
| |
| import java.util.List; |
| |
| /** |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| @ChannelHandler.Sharable |
| public final class WebSocketGremlinResponseDecoder extends MessageToMessageDecoder<WebSocketFrame> { |
| private final MessageSerializer serializer; |
| |
| public WebSocketGremlinResponseDecoder(final MessageSerializer serializer) { |
| this.serializer = serializer; |
| } |
| |
| @Override |
| protected void decode(final ChannelHandlerContext channelHandlerContext, final WebSocketFrame webSocketFrame, final List<Object> objects) throws Exception { |
| try { |
| if (webSocketFrame instanceof BinaryWebSocketFrame) { |
| final BinaryWebSocketFrame tf = (BinaryWebSocketFrame) webSocketFrame; |
| objects.add(serializer.deserializeResponse(tf.content())); |
| } else if (webSocketFrame instanceof TextWebSocketFrame){ |
| final TextWebSocketFrame tf = (TextWebSocketFrame) webSocketFrame; |
| final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer; |
| objects.add(textSerializer.deserializeResponse(tf.text())); |
| } else { |
| throw new RuntimeException(String.format("WebSocket channel does not handle this type of message: %s", webSocketFrame.getClass().getName())); |
| } |
| } finally { |
| ReferenceCountUtil.release(webSocketFrame); |
| } |
| } |
| } |