| /* |
| * 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.server.handler; |
| |
| import io.netty.channel.ChannelHandler; |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.ChannelInboundHandlerAdapter; |
| import io.netty.channel.ChannelPipeline; |
| import io.netty.handler.codec.http.HttpMessage; |
| import org.apache.tinkerpop.gremlin.server.Channelizer; |
| import org.apache.tinkerpop.gremlin.server.channel.WebSocketChannelizer; |
| import org.apache.tinkerpop.gremlin.server.channel.WsAndHttpChannelizer; |
| import org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor; |
| |
| import static org.apache.tinkerpop.gremlin.server.channel.WebSocketChannelizer.PIPELINE_AUTHENTICATOR; |
| import static org.apache.tinkerpop.gremlin.server.channel.WebSocketChannelizer.PIPELINE_REQUEST_HANDLER; |
| import static org.apache.tinkerpop.gremlin.server.channel.WebSocketChannelizer.PIPELINE_HTTP_RESPONSE_ENCODER; |
| |
| /** |
| * A ChannelInboundHandlerAdapter for use with {@link WsAndHttpChannelizer} that toggles between WebSockets |
| * and http. |
| * |
| * @author Keith Lohnes lohnesk@gmail.com |
| */ |
| @ChannelHandler.Sharable |
| public class WsAndHttpChannelizerHandler extends ChannelInboundHandlerAdapter { |
| |
| private final WebSocketChannelizer wsChannelizer = new WebSocketChannelizer(); |
| private HttpGremlinEndpointHandler httpGremlinEndpointHandler; |
| |
| public void init(final ServerGremlinExecutor serverGremlinExecutor, final HttpGremlinEndpointHandler httpGremlinEndpointHandler) { |
| //WebSocketChannelizer has everything needed for the http endpoint to work |
| wsChannelizer.init(serverGremlinExecutor); |
| this.httpGremlinEndpointHandler = httpGremlinEndpointHandler; |
| } |
| |
| public Channelizer getWsChannelizer() { |
| return wsChannelizer; |
| } |
| |
| public void configure(final ChannelPipeline pipeline) { |
| wsChannelizer.configure(pipeline); |
| } |
| |
| @Override |
| public void channelRead(final ChannelHandlerContext ctx, final Object obj) { |
| final ChannelPipeline pipeline = ctx.pipeline(); |
| if (obj instanceof HttpMessage && !WebSocketHandlerUtil.isWebSocket((HttpMessage)obj)) { |
| if (null != pipeline.get(PIPELINE_AUTHENTICATOR)) { |
| pipeline.remove(PIPELINE_REQUEST_HANDLER); |
| final ChannelHandler authenticator = pipeline.get(PIPELINE_AUTHENTICATOR); |
| pipeline.remove(PIPELINE_AUTHENTICATOR); |
| pipeline.addAfter(PIPELINE_HTTP_RESPONSE_ENCODER, PIPELINE_AUTHENTICATOR, authenticator); |
| pipeline.addAfter(PIPELINE_AUTHENTICATOR, PIPELINE_REQUEST_HANDLER, this.httpGremlinEndpointHandler); |
| } else { |
| pipeline.remove(PIPELINE_REQUEST_HANDLER); |
| pipeline.addAfter(PIPELINE_HTTP_RESPONSE_ENCODER, PIPELINE_REQUEST_HANDLER, this.httpGremlinEndpointHandler); |
| } |
| } |
| ctx.fireChannelRead(obj); |
| } |
| |
| @Override |
| public void exceptionCaught(final ChannelHandlerContext ctx, final Throwable cause) { |
| ctx.close(); |
| } |
| |
| |
| } |