| /** |
| * 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.solr.servlet; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.solr.handler.admin.LogLevelHandler; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.*; |
| import java.util.logging.Level; |
| import java.util.logging.LogManager; |
| import java.util.logging.Logger; |
| |
| |
| /** |
| * Admin JDK Logger level report and selection servlet. |
| * |
| * @since solr 1.3 |
| * @deprecated {@link LogLevelHandler} this servlet will be removed before solr 4.0 |
| */ |
| public final class LogLevelSelection extends HttpServlet { |
| @Override |
| public void init() throws ServletException { |
| } |
| |
| /** |
| * Processes an HTTP GET request and changes the logging level as |
| * specified. |
| */ |
| @Override |
| public void doGet(HttpServletRequest request, |
| HttpServletResponse response) |
| throws IOException, ServletException { |
| // Output page |
| |
| response.setContentType("text/html"); |
| PrintWriter out = response.getWriter(); |
| out.write("<html><head>\n"); |
| out.write("<title>Solr Admin: JDK Log Level Selector</title>\n"); |
| out.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"solr-admin.css\" />"); |
| out.write("</head><body>\n"); |
| out.write("<a href=\".\"><img border=\"0\" align=\"right\" height=\"78\" width=\"142\" src=\"img/solr.png\" alt=\"Solr\"></a>"); |
| out.write("<h1 style='margin-bottom:5px;'>JDK Log Level Selector</h1>"); |
| out.write("<h2 style='color:#AA0000; margin-top:0px;'>This will be removed before Solr 4.0. See <a href='/#/logging'>logging</a></h1>"); |
| |
| out.write("<p>Below is the complete JDK Log hierarchy with " + |
| "intermediate logger/categories synthesized. " + |
| "The effective logging level is shown to the " + |
| "far right. If a logger has unset level, then " + |
| "the effective level is that of the nearest ancestor " + |
| "with a level setting. Note that this only shows " + |
| "JDK Log levels.</p>\n"); |
| |
| out.write("<form method='POST'>\n"); |
| |
| out.write("<input type='submit' name='submit' value='set' " + |
| "class='button'>\n"); |
| out.write("<input type='submit' name='submit' value='cancel' " + |
| "class='button'>\n"); |
| out.write("<br><br>\n"); |
| |
| out.write("<table cellspacing='2' cellpadding='2'>"); |
| |
| out.write("<tr bgcolor='#CCCCFF'>" + |
| "<th align=left>Logger/Category name<br>" + |
| "<th colspan=9>Level</th>" + |
| "</tr><tr bgcolor='#CCCCFF'>" + |
| "<td bgcolor='#AAAAAA'>" + |
| "(Dark rows don't yet exist.)</td>"); |
| |
| for (int j = 0; j < LEVELS.length; ++j) { |
| out.write("<th align=left>"); |
| if (LEVELS[j] != null) out.write(LEVELS[j].toString()); |
| else out.write("unset"); |
| out.write("</th>"); |
| } |
| out.write("<th align=left>Effective</th>\n"); |
| out.write("</tr>\n"); |
| |
| Iterator iWrappers = buildWrappers().iterator(); |
| while (iWrappers.hasNext()) { |
| |
| LogWrapper wrapper = (LogWrapper) iWrappers.next(); |
| |
| out.write("<tr"); |
| if (wrapper.logger == null) { |
| out.write(" bgcolor='#AAAAAA'"); |
| } |
| //out.write( ( wrapper.logger != null ) ? "#DDDDDD" : "#AAAAAA" ); |
| out.write("><td>"); |
| if ("".equals(wrapper.name)) { |
| out.write("root"); |
| } else { |
| out.write(wrapper.name); |
| } |
| out.write("</td>\n"); |
| for (int j = 0; j < LEVELS.length; ++j) { |
| out.write("<td align=center>"); |
| if (!wrapper.name.equals("root") || |
| (LEVELS[j] != null)) { |
| out.write("<input type='radio' name='"); |
| if ("".equals(wrapper.name)) { |
| out.write("root"); |
| } else { |
| out.write(wrapper.name); |
| } |
| out.write("' value='"); |
| if (LEVELS[j] != null) out.write(LEVELS[j].toString()); |
| else out.write("unset"); |
| out.write('\''); |
| if (LEVELS[j] == wrapper.level()) out.write(" checked"); |
| out.write('>'); |
| } |
| out.write("</td>\n"); |
| } |
| out.write("<td align=center>"); |
| if (wrapper.logger != null) { |
| out.write(getEffectiveLevel(wrapper.logger).toString()); |
| } |
| out.write("</td></tr>\n"); |
| } |
| out.write("</table>\n"); |
| |
| out.write("<br>\n"); |
| out.write("<input type='submit' name='submit' value='set' " + |
| "class='button'>\n"); |
| out.write("<input type='submit' name='submit' value='cancel' " + |
| "class='button'>\n"); |
| |
| out.write("</form>\n"); |
| |
| out.write("</body></html>\n"); |
| } |
| |
| |
| @Override |
| public void doPost(HttpServletRequest request, |
| HttpServletResponse response) |
| throws IOException, ServletException { |
| if (request.getParameter("submit").equals("set")) { |
| |
| Map paramMap = request.getParameterMap(); |
| |
| Iterator iParams = paramMap.entrySet().iterator(); |
| while (iParams.hasNext()) { |
| Map.Entry p = (Map.Entry) iParams.next(); |
| String name = (String) p.getKey(); |
| String value = ((String[]) p.getValue())[0]; |
| |
| if (name.equals("submit")) continue; |
| Logger logger; |
| LogManager logManager = LogManager.getLogManager(); |
| if ("root".equals(name)) { |
| logger = logManager.getLogger(""); |
| } else logger = logManager.getLogger(name); |
| |
| if ("unset".equals(value)) { |
| if ((logger != null) && (logger.getLevel() != null)) { |
| logger.setLevel(null); |
| log.info("Unset log level on '" + name + "'."); |
| } |
| } else { |
| Level level = Level.parse(value); |
| if (logger == null) logger = Logger.getLogger(name); |
| if (logger.getLevel() != level) { |
| logger.setLevel(level); |
| log.info("Set '" + name + "' to " + |
| level + " level."); |
| } |
| } |
| } |
| } else { |
| log.fine("Selection form cancelled"); |
| } |
| |
| // Redirect back to standard get page. |
| response.sendRedirect(request.getRequestURI()); |
| } |
| |
| |
| private Collection buildWrappers() { |
| // Use tree to get sorted results |
| SortedSet<LogWrapper> roots = new TreeSet<LogWrapper>(); |
| |
| roots.add(LogWrapper.ROOT); |
| |
| LogManager logManager = LogManager.getLogManager(); |
| |
| Enumeration<String> loggerNames = logManager.getLoggerNames(); |
| while (loggerNames.hasMoreElements()) { |
| String name = loggerNames.nextElement(); |
| Logger logger = Logger.getLogger(name); |
| LogWrapper wrapper = new LogWrapper(logger); |
| roots.remove(wrapper); // Make sure add occurs |
| roots.add(wrapper); |
| |
| while (true) { |
| int dot = name.lastIndexOf("."); |
| if (dot < 0) break; |
| name = name.substring(0, dot); |
| roots.add(new LogWrapper(name)); // if not already |
| } |
| } |
| |
| return roots; |
| } |
| |
| private Level getEffectiveLevel(Logger logger) { |
| Level level = logger.getLevel(); |
| if (level != null) { |
| return level; |
| } |
| for (Level l : LEVELS) { |
| if (l == null) { |
| // avoid NPE |
| continue; |
| } |
| if (logger.isLoggable(l)) { |
| // return first level loggable |
| return l; |
| } |
| } |
| return Level.OFF; |
| } |
| |
| private static class LogWrapper |
| implements Comparable { |
| public static LogWrapper ROOT = |
| new LogWrapper(LogManager.getLogManager().getLogger("")); |
| |
| public LogWrapper(Logger logger) { |
| this.logger = logger; |
| this.name = logger.getName(); |
| } |
| |
| public LogWrapper(String name) { |
| this.name = name; |
| } |
| |
| |
| public int compareTo(Object other) { |
| if (this.equals(other)) return 0; |
| if (this == ROOT) return -1; |
| if (other == ROOT) return 1; |
| |
| return name.compareTo(((LogWrapper) other).name); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| LogWrapper other = (LogWrapper) obj; |
| if (name == null) { |
| if (other.name != null) |
| return false; |
| } else if (!name.equals(other.name)) |
| return false; |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((name == null) ? 0 : name.hashCode()); |
| return result; |
| } |
| |
| public Level level() { |
| if (logger != null) return logger.getLevel(); |
| return null; |
| } |
| |
| public Logger logger = null; |
| public String name; |
| } |
| |
| private static Level[] LEVELS = { |
| null, // aka unset |
| Level.FINEST, |
| Level.FINE, |
| Level.CONFIG, |
| Level.INFO, |
| Level.WARNING, |
| Level.SEVERE, |
| Level.OFF |
| // Level.ALL -- ignore. It is useless. |
| }; |
| |
| private Logger log = Logger.getLogger(getClass().getName()); |
| } |
