| /** |
| * 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.handler.codec.http.HttpResponseStatus; |
| import io.netty.handler.codec.http2.DefaultHttp2Headers; |
| import io.netty.handler.codec.http2.Http2ConnectionEncoder; |
| import io.netty.handler.codec.http2.Http2Exception; |
| import io.netty.handler.codec.http2.Http2FrameAdapter; |
| import io.netty.handler.codec.http2.Http2Headers; |
| |
| import java.nio.charset.StandardCharsets; |
| |
| class DtpHttp2FrameListener extends Http2FrameAdapter { |
| |
| private Http2ConnectionEncoder encoder; |
| |
| public void encoder(Http2ConnectionEncoder encoder) { |
| this.encoder = encoder; |
| } |
| |
| @Override |
| public void onHeadersRead(ChannelHandlerContext ctx, int streamId, |
| Http2Headers headers, int streamDependency, short weight, |
| boolean exclusive, int padding, boolean endStream) throws Http2Exception { |
| encoder.writeHeaders(ctx, streamId, |
| new DefaultHttp2Headers().status(HttpResponseStatus.OK.codeAsText()), 0, |
| false, ctx.newPromise()); |
| encoder.writeData( |
| ctx, |
| streamId, |
| ctx.alloc().buffer() |
| .writeBytes("HTTP/2 DTP".getBytes(StandardCharsets.UTF_8)), 0, true, |
| ctx.newPromise()); |
| } |
| } |