| /** |
| * 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.hadoop.hdfs.server.datanode.web; |
| |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.ChannelPipeline; |
| import io.netty.channel.SimpleChannelInboundHandler; |
| import io.netty.handler.codec.http.HttpRequest; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler; |
| |
| import java.net.InetSocketAddress; |
| |
| import static org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler.WEBHDFS_PREFIX; |
| |
| class URLDispatcher extends SimpleChannelInboundHandler<HttpRequest> { |
| private final InetSocketAddress proxyHost; |
| private final Configuration conf; |
| private final Configuration confForCreate; |
| |
| URLDispatcher(InetSocketAddress proxyHost, Configuration conf, |
| Configuration confForCreate) { |
| this.proxyHost = proxyHost; |
| this.conf = conf; |
| this.confForCreate = confForCreate; |
| } |
| |
| @Override |
| protected void channelRead0(ChannelHandlerContext ctx, HttpRequest req) |
| throws Exception { |
| String uri = req.getUri(); |
| ChannelPipeline p = ctx.pipeline(); |
| if (uri.startsWith(WEBHDFS_PREFIX)) { |
| WebHdfsHandler h = new WebHdfsHandler(conf, confForCreate); |
| p.replace(this, WebHdfsHandler.class.getSimpleName(), h); |
| h.channelRead0(ctx, req); |
| } else { |
| SimpleHttpProxyHandler h = new SimpleHttpProxyHandler(proxyHost); |
| p.replace(this, SimpleHttpProxyHandler.class.getSimpleName(), h); |
| h.channelRead0(ctx, req); |
| } |
| } |
| } |