| // Copyright (C) 2013 The Android Open Source Project |
| // |
| // Licensed 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 com.google.gerrit.pgm.http.jetty; |
| |
| import com.google.common.base.Charsets; |
| import com.google.common.base.Strings; |
| import com.google.gwtexpui.server.CacheHeaders; |
| |
| import org.eclipse.jetty.http.HttpHeader; |
| import org.eclipse.jetty.http.HttpStatus; |
| import org.eclipse.jetty.server.HttpConnection; |
| import org.eclipse.jetty.server.Request; |
| import org.eclipse.jetty.server.handler.ErrorHandler; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| class HiddenErrorHandler extends ErrorHandler { |
| private static final Logger log = LoggerFactory.getLogger(HiddenErrorHandler.class); |
| |
| public void handle(String target, Request baseRequest, |
| HttpServletRequest req, HttpServletResponse res) throws IOException { |
| HttpConnection conn = HttpConnection.getCurrentConnection(); |
| baseRequest.setHandled(true); |
| try { |
| log(req); |
| } finally { |
| reply(conn, res); |
| } |
| } |
| |
| private void reply(HttpConnection conn, HttpServletResponse res) |
| throws IOException { |
| byte[] msg = message(conn); |
| res.setHeader(HttpHeader.CONTENT_TYPE.asString(), |
| "text/plain; charset=ISO-8859-1"); |
| res.setContentLength(msg.length); |
| try { |
| CacheHeaders.setNotCacheable(res); |
| } finally { |
| ServletOutputStream out = res.getOutputStream(); |
| try { |
| out.write(msg); |
| } finally { |
| out.close(); |
| } |
| } |
| } |
| |
| private static byte[] message(HttpConnection conn) { |
| String msg = conn.getHttpChannel().getResponse().getReason(); |
| if (msg == null) { |
| msg = HttpStatus.getMessage(conn.getHttpChannel() |
| .getResponse().getStatus()); |
| } |
| return msg.getBytes(Charsets.ISO_8859_1); |
| } |
| |
| private static void log(HttpServletRequest req) { |
| Throwable err = (Throwable)req.getAttribute("javax.servlet.error.exception"); |
| if (err != null) { |
| String uri = req.getRequestURI(); |
| if (!Strings.isNullOrEmpty(req.getQueryString())) { |
| uri += "?" + req.getQueryString(); |
| } |
| log.error(String.format("Error in %s %s", req.getMethod(), uri), err); |
| } |
| } |
| } |