| // 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.doris.http; |
| |
| import org.apache.doris.http.action.IndexAction; |
| import org.apache.doris.http.action.NotFoundAction; |
| |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import java.net.URISyntaxException; |
| |
| import io.netty.buffer.Unpooled; |
| import io.netty.channel.ChannelFutureListener; |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.ChannelInboundHandlerAdapter; |
| import io.netty.handler.codec.http.DefaultFullHttpResponse; |
| import io.netty.handler.codec.http.FullHttpRequest; |
| import io.netty.handler.codec.http.FullHttpResponse; |
| import io.netty.handler.codec.http.HttpHeaderNames; |
| import io.netty.handler.codec.http.HttpRequest; |
| import io.netty.handler.codec.http.HttpResponseStatus; |
| import io.netty.handler.codec.http.HttpVersion; |
| import io.netty.util.ReferenceCountUtil; |
| |
| public class HttpServerHandler extends ChannelInboundHandlerAdapter { |
| private static final Logger LOG = LogManager.getLogger(HttpServerHandler.class); |
| |
| private ActionController controller = null; |
| protected FullHttpRequest fullRequest = null; |
| protected HttpRequest request = null; |
| private BaseAction action = null; |
| |
| public HttpServerHandler(ActionController controller) { |
| super(); |
| this.controller = controller; |
| } |
| |
| @Override |
| public void channelReadComplete(ChannelHandlerContext ctx) { |
| ctx.flush(); |
| } |
| |
| @Override |
| public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { |
| if (msg instanceof HttpRequest) { |
| this.request = (HttpRequest) msg; |
| LOG.debug("request: url:[{}]", request.uri()); |
| if (!isRequestValid(ctx, request)) { |
| writeResponse(ctx, HttpResponseStatus.BAD_REQUEST, "this is a bad request."); |
| return; |
| } |
| BaseRequest req = new BaseRequest(ctx, request); |
| |
| action = getAction(req); |
| if (action != null) { |
| LOG.debug("action: {} ", action.getClass().getName()); |
| action.handleRequest(req); |
| } |
| } else { |
| ReferenceCountUtil.release(msg); |
| } |
| } |
| |
| private boolean isRequestValid(ChannelHandlerContext ctx, HttpRequest request) throws URISyntaxException { |
| return true; |
| } |
| |
| private void writeResponse(ChannelHandlerContext context , HttpResponseStatus status, String content) { |
| FullHttpResponse responseObj = new DefaultFullHttpResponse( |
| HttpVersion.HTTP_1_1, |
| status, |
| Unpooled.wrappedBuffer(content.getBytes())); |
| responseObj.headers().set(HttpHeaderNames.CONTENT_TYPE.toString(), "text/html"); |
| responseObj.headers().set(HttpHeaderNames.CONTENT_LENGTH.toString(), responseObj.content().readableBytes()); |
| context.writeAndFlush(responseObj).addListener(ChannelFutureListener.CLOSE); |
| } |
| |
| @Override |
| public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception { |
| cause.printStackTrace(); |
| ctx.close(); |
| } |
| |
| private BaseAction getAction(BaseRequest request) { |
| String uri = request.getRequest().uri(); |
| // ignore this request, which is a default request from client's browser. |
| if (uri.endsWith("/favicon.ico")) { |
| return NotFoundAction.getNotFoundAction(); |
| } else if (uri.equals("/")) { |
| return new IndexAction(controller); |
| } |
| |
| // Map<String, String> params = Maps.newHashMap(); |
| BaseAction action = (BaseAction) controller.getHandler(request); |
| if (action == null) { |
| action = NotFoundAction.getNotFoundAction(); |
| } |
| |
| return action; |
| } |
| } |