| // Copyright (C) 2020 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.httpd; |
| |
| import com.google.gerrit.server.CurrentUser; |
| import com.google.inject.Inject; |
| import com.google.inject.Module; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import com.google.inject.servlet.ServletModule; |
| import java.io.IOException; |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| |
| @Singleton |
| public class SetThreadNameFilter implements Filter { |
| private static final int MAX_PATH_LENGTH = 120; |
| |
| public static Module module() { |
| return new ServletModule() { |
| @Override |
| protected void configureServlets() { |
| filter("/*").through(SetThreadNameFilter.class); |
| } |
| }; |
| } |
| |
| private final Provider<CurrentUser> user; |
| |
| @Inject |
| public SetThreadNameFilter(Provider<CurrentUser> user) { |
| this.user = user; |
| } |
| |
| @Override |
| public void init(FilterConfig filterConfig) {} |
| |
| @Override |
| public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) |
| throws IOException, ServletException { |
| Thread current = Thread.currentThread(); |
| String old = current.getName(); |
| try { |
| current.setName(computeName((HttpServletRequest) request)); |
| chain.doFilter(request, response); |
| } finally { |
| current.setName(old); |
| } |
| } |
| |
| private String computeName(HttpServletRequest req) { |
| StringBuilder s = new StringBuilder(); |
| s.append("HTTP "); |
| s.append(req.getMethod()); |
| s.append(" "); |
| s.append(req.getRequestURI()); |
| String query = req.getQueryString(); |
| if (query != null) { |
| s.append("?").append(query); |
| } |
| if (s.length() > MAX_PATH_LENGTH) { |
| s.delete(MAX_PATH_LENGTH, s.length()); |
| } |
| s.append(" ("); |
| s.append(user.get().getUserName().orElse("N/A")); |
| s.append(" from "); |
| s.append(req.getRemoteAddr()); |
| s.append(")"); |
| return s.toString(); |
| } |
| |
| @Override |
| public void destroy() {} |
| } |