| /** |
| * 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.dtp; |
| |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.SimpleChannelInboundHandler; |
| import io.netty.handler.codec.http.FullHttpResponse; |
| import io.netty.handler.codec.http2.HttpUtil; |
| import io.netty.util.concurrent.Promise; |
| |
| import java.util.concurrent.ConcurrentMap; |
| |
| import net.sf.ehcache.store.chm.ConcurrentHashMap; |
| |
| public class Http2ResponseHandler extends |
| SimpleChannelInboundHandler<FullHttpResponse> { |
| |
| private ConcurrentMap<Integer, Promise<FullHttpResponse>> streamId2Promise = |
| new ConcurrentHashMap<>(); |
| |
| @Override |
| protected void channelRead0(ChannelHandlerContext ctx, FullHttpResponse msg) |
| throws Exception { |
| Integer streamId = |
| msg.headers().getInt(HttpUtil.ExtensionHeaderNames.STREAM_ID.text()); |
| if (streamId == null) { |
| System.err.println("HttpResponseHandler unexpected message received: " |
| + msg); |
| return; |
| } |
| if (streamId.intValue() == 1) { |
| // this is the upgrade response message, just ignore it. |
| return; |
| } |
| Promise<FullHttpResponse> promise = streamId2Promise.get(streamId); |
| if (promise == null) { |
| System.err.println("Message received for unknown stream id " + streamId); |
| } else { |
| // Do stuff with the message (for now just print it) |
| promise.setSuccess(msg.retain()); |
| |
| } |
| } |
| |
| public void put(Integer streamId, Promise<FullHttpResponse> promise) { |
| streamId2Promise.put(streamId, promise); |
| } |
| } |