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iaveryanov/logback4admin.jsp Secret

Created May 17, 2013 12:23
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Change logback log levels runtime from a jsp. Inspired by log4jadmin.jsp. I think it is orginal for log4j http://nelz.net/2008/04/08/log4j-runtime-configuration/
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logback4admin.jsp
<%@ page language="java" contentType="text/html;charset=UTF-8" %>
<%@ page import="ch.qos.logback.classic.Level" %>
<%@ page import="ch.qos.logback.classic.Logger" %>
<%@ page import="ch.qos.logback.classic.LoggerContext" %>
<%@ page import="org.slf4j.LoggerFactory" %>
<%@ page import="java.util.Map" %>
<%@ page import="java.util.Set" %>
<%@ page import="java.util.TreeMap" %>
<%@ page import="ch.qos.logback.classic.joran.JoranConfigurator" %>
<%@ page import="ch.qos.logback.classic.util.ContextInitializer" %>
<% long beginPageLoadTime = System.currentTimeMillis();%>
<html>
<head>
<title>Logback Administration</title>
<style type="text/css">
<!--
#content {
margin: 0px;
padding: 0px;
text-align: center;
background-color: #add8e6;
border: 1px solid #00008b;
width: 100%;
}
body {
position: relative;
margin: 10px;
padding: 0px;
color: #333;
}
h1 {
margin-top: 20px;
font: 1.5em Verdana, Arial, Helvetica sans-serif;
}
h2 {
margin-top: 10px;
font: 0.75em Verdana, Arial, Helvetica sans-serif;
text-align: left;
}
a, a:link, a:visited, a:active {
color: blue;
text-decoration: none;
text-transform: uppercase;
}
table {
width: 100%;
background-color: #000;
padding: 3px;
border: 0px;
}
th {
font-size: 0.75em;
background-color: #add8e6;
color: #000;
padding-left: 5px;
text-align: center;
border: 1px solid #ccc;
white-space: nowrap;
}
td {
font-size: 0.75em;
white-space: nowrap;
}
td.center {
font-size: 0.75em;
text-align: center;
white-space: nowrap;
}
.filter-form {
font-size: 0.9em;
background-color: #00008b;
color: #fff;
padding-left: 5px;
text-align: left;
border: 1px solid #00008b;
white-space: nowrap;
}
.filter-text {
font-size: 0.75em;
background-color: #fff;
color: #000;
text-align: left;
border: 1px solid #ccc;
white-space: nowrap;
}
.filter-button {
font-size: 0.75em;
background-color: #00008b;
color: #fff;
padding-left: 5px;
padding-right: 5px;
text-align: center;
border: 1px solid #ccc;
width: 100px;
white-space: nowrap;
}
.action-button {
font-size: 0.75em;
background-color: #ccc;
color: #000;
padding-left: 5px;
padding-right: 5px;
text-align: center;
border: 1px solid #ccc;
width: 100px;
white-space: nowrap;
}
.row-odd {
background-color: #ffffff;
}
.row-even {
background-color: #F6F6F6;
}
-->
</style>
</head>
<body onLoad="javascript:document.logFilterForm.logNameFilter.focus();">
<%
String ROOT_LOGER_KEY = "!";
String CONTAINS_FILTER = "Contains";
String BEGIN_WITH_FILTER = "Begins With";
String RESET_ACTION = "Reset";
String[] logLevels = {"debug", "info", "warn", "error", "fatal", "off"};
// parameters
String paramOperation = request.getParameter("operation");
String paramLogger = request.getParameter("logger");
String paramLogLevel = request.getParameter("newLogLevel");
String paramLogNameFilter = request.getParameter("logNameFilter");
String paramLogNameFilterType = request.getParameter("logNameFilterType");
String paramReset = request.getParameter("reset");
int rowCounter = 0;
%>
<div id="content">
<h1>Logback Administration</h1>
<div class="filter-form">
<form action="logback4admin.jsp" name="logFilterForm">
Filter Loggers:&nbsp;&nbsp;
<input name="logNameFilter" type="text" size="50" value="<%=(paramLogNameFilter == null ? "":paramLogNameFilter)%>"
class="filter-text"/>
<input name="logNameFilterType" type="submit" value="<%=BEGIN_WITH_FILTER%>" class="filter-button"/>&nbsp;
<input name="logNameFilterType" type="submit" value="<%=CONTAINS_FILTER%>" class="filter-button"/>&nbsp;
<input name="logNameClear" type="button" value="Clear" class="filter-button"
onmousedown='javascript:document.logFilterForm.logNameFilter.value="";'/>
<input name="reset" type="submit" value="<%=RESET_ACTION%>" class="action-button"/>
<param name="operation" value="changeLogLevel"/>
</form>
</div>
<table cellspacing="1">
<tr>
<th width="35%">Logger</th>
<th width="15%">Level</th>
<th width="15%">Effective Level</th>
<th width="35%">Change Log Level To</th>
</tr>
<%
LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
if (RESET_ACTION.equals(paramReset)){
JoranConfigurator configurator = new JoranConfigurator();
configurator.setContext(context);
// Call context.reset() to clear any previous configuration, e.g. default
// configuration. For multi-step configuration, omit calling context.reset().
context.reset();
ContextInitializer ci = new ContextInitializer(context);
ci.autoConfig();
}
Map<String, Logger> loggersMap = new TreeMap<String, Logger>();
// fill the log map
for (Logger logger : context.getLoggerList()) {
if (Logger.ROOT_LOGGER_NAME.equalsIgnoreCase(logger.getName())) {
// put root logger always, will not be filtered
// root replacement for the TOP on the table
loggersMap.put(ROOT_LOGER_KEY, logger);
} else if (paramLogNameFilter == null || paramLogNameFilter.trim().length() == 0) {
loggersMap.put(logger.getName(), logger);
} else if (CONTAINS_FILTER.equals(paramLogNameFilterType)) {
if (logger.getName().toUpperCase().indexOf(paramLogNameFilter.toUpperCase()) >= 0) {
loggersMap.put(logger.getName(), logger);
}
} else {
// Either was no filter in IF, contains filter in ELSE IF, or begins with in ELSE
if (logger.getName().startsWith(paramLogNameFilter)) {
loggersMap.put(logger.getName(), logger);
}
}
}
// begin print the log map
Set<Map.Entry<String, Logger>> entries = loggersMap.entrySet();
rowCounter = 0;
for (Map.Entry<String, Logger> entry: entries) {
rowCounter++;
Logger logger = entry.getValue();
// MUST CHANGE THE LOG LEVEL ON LOGGER BEFORE GENERATING THE LINKS AND THE
// CURRENT LOG LEVEL OR DISABLED LINK WON'T MATCH THE NEWLY CHANGED VALUES
if ("changeLogLevel".equals(paramOperation) && paramLogger.equals(logger.getName())) {
Logger selectedLogger = loggersMap.get(paramLogger);
selectedLogger.setLevel(Level.toLevel(paramLogLevel));
}
String loggerName = null;
String loggerLevel = null;
String loggerEffectiveLevel = null;
if (logger != null) {
loggerName = ROOT_LOGER_KEY.equals(entry.getKey()) ? Logger.ROOT_LOGGER_NAME : entry.getKey();
loggerLevel = (logger.getLevel() != null)? logger.getLevel().toString(): "";
loggerEffectiveLevel = String.valueOf(logger.getEffectiveLevel());
}
%>
<tr class="<%=(rowCounter%2 == 1)?"row-odd":"row-even"%>">
<td>
<%=loggerName%>
</td>
<td>
<%=loggerLevel%>
</td>
<td>
<%=loggerEffectiveLevel%>
</td>
<td class="center">
<%
for (int cnt = 0; cnt < logLevels.length; cnt++) {
String url = "logback4admin.jsp?operation=changeLogLevel&logger=" + loggerName
+ "&newLogLevel=" + logLevels[cnt] + "&logNameFilter="
+ (paramLogNameFilter != null ? paramLogNameFilter : "")
+ "&logNameFilterType=" + (paramLogNameFilterType != null ? paramLogNameFilterType : "");
if (logger.getLevel() == Level.toLevel(logLevels[cnt]) || logger.getEffectiveLevel() == Level.toLevel(logLevels[cnt])) {
%>
[<%=logLevels[cnt].toUpperCase()%>]
<%
} else {
%>
<a href='<%=url%>'>[<%=logLevels[cnt]%>]</a>&nbsp;
<%
}
}
%>
</td>
</tr>
<%
} // end for print the log map
%>
</table>
<%-- footer --%>
<h2>
Revision: 1.0<br/>
Page Load Time (Millis): <%=(System.currentTimeMillis() - beginPageLoadTime)%>
</h2>
</div>
</body>
</html>
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