Migrate the "logging" package from jakarta-commons-sandbox.
git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/logging/trunk@138814 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Craig R. McClanahan
206
src/java/org/apache/commons/logging/SimpleLog.java
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206
src/java/org/apache/commons/logging/SimpleLog.java
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/*
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* Copyright (C) The Apache Software Foundation. All rights reserved.
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*
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* This software is published under the terms of the Apache Software License
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* version 1.1, a copy of which has been included with this distribution in
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* the LICENSE file.
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*/
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package org.apache.commons.logging;
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import java.util.Properties;
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import java.util.Enumeration;
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import java.io.InputStream;
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import java.text.SimpleDateFormat;
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import java.text.DateFormat;
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import java.util.Date;
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/**
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* <p>Simple implementation of Log that sends all enabled log messages,
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* for all defined loggers, to System.out. The following system properties
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* are supported to configure the behavior of this logger:</p>
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* <ul>
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* <li><code>org.apache.commons.logging.simplelog.defaultlog</code> -
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* Default logging detail level for all instances of SimpleLog.
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* Must be one of ("debug", "info", "warn", "error", or "fatal").
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* If not specified, defaults to "error".</li>
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* <li><code>org.apache.commons.logging.simplelog.log.xxxxx</code> -
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* Logging detail level for a SimpleLog instance named "xxxxx".
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* Must be one of ("debug", "info", "warn", "error", or "fatal").
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* If not specified, the default logging detail level is used.</li>
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* <li><code>org.apache.commons.logging.simplelog.showlogname</code> -
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* Set to <code>true</code> if you want the Log instance name to be
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* included in output messages.</li>
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* <li><code>org.apache.commons.logging.simplelog.showtime</code> -
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* Set to <code>true</code> if you want the current date and time
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* to be included in output messages.</li>
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* </ul>
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*
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* <p>In addition to looking for system properties with the names specified
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* above, this implementation also checks for a class loader resource named
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* <code>"simplelog.properties"</code>, and includes any matching definitions
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* from this resource (if it exists).</p>
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*
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* @author Rod Waldhoff
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* @version $Id: SimpleLog.java,v 1.6 2001/12/04 04:28:03 craigmcc Exp $
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*/
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public class SimpleLog implements Log {
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static protected final String _prefix =
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"org.apache.commons.logging.simplelog.";
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static protected final Properties _simplelogProps = new Properties();
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static protected boolean _showlogname = false;
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static protected boolean _showtime = false;
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static protected DateFormat _df = null;
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static {
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// add all system props that start with the specified prefix
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Enumeration enum = System.getProperties().propertyNames();
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while(enum.hasMoreElements()) {
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String name = (String)(enum.nextElement());
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if(null != name && name.startsWith(_prefix)) {
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_simplelogProps.setProperty(name,System.getProperty(name));
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}
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}
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// add props from the resource simplelog.properties
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InputStream in =
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ClassLoader.getSystemResourceAsStream("simplelog.properties");
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if(null != in) {
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try {
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_simplelogProps.load(in);
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in.close();
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} catch(java.io.IOException e) {
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// ignored
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}
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}
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try {
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} catch(Throwable t) {
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// ignored
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}
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_showlogname = "true".equalsIgnoreCase(_simplelogProps.getProperty(_prefix + "showlogname","true"));
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_showtime = "true".equalsIgnoreCase(_simplelogProps.getProperty(_prefix + "showdate","true"));
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if(_showtime) {
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_df = new SimpleDateFormat(_simplelogProps.getProperty(_prefix + "dateformat","yyyy/MM/dd HH:mm:ss:SSS zzz"));
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}
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}
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protected static final int DEBUG = 5;
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protected static final int INFO = 4;
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protected static final int WARN = 3;
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protected static final int ERROR = 2;
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protected static final int FATAL = 1;
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protected int _logLevel = 2;
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protected String _name = null;
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public SimpleLog(String name) {
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_name = name;
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String lvl = _simplelogProps.getProperty(_prefix + "log." + _name);
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int i = String.valueOf(name).lastIndexOf(".");
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while(null == lvl && i > -1) {
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name = name.substring(0,i);
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lvl = _simplelogProps.getProperty(_prefix + "log." + name);
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i = String.valueOf(name).lastIndexOf(".");
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}
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if(null == lvl) {
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lvl = _simplelogProps.getProperty(_prefix + "defaultlog");
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}
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if("debug".equalsIgnoreCase(lvl)) {
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_logLevel = DEBUG;
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} else if("info".equalsIgnoreCase(lvl)) {
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_logLevel = INFO;
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} else if("warn".equalsIgnoreCase(lvl)) {
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_logLevel = WARN;
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} else if("error".equalsIgnoreCase(lvl)) {
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_logLevel = ERROR;
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} else if("fatal".equalsIgnoreCase(lvl)) {
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_logLevel = FATAL;
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}
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}
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protected void log(int type, Object message, Throwable t) {
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if(_logLevel >= type) {
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StringBuffer buf = new StringBuffer();
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if(_showtime) {
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buf.append(_df.format(new Date()));
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buf.append(" ");
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}
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switch(type) {
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case DEBUG: buf.append("[DEBUG] "); break;
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case INFO: buf.append("[INFO] "); break;
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case WARN: buf.append("[WARN] "); break;
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case ERROR: buf.append("[ERROR] "); break;
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case FATAL: buf.append("[FATAL] "); break;
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}
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if(_showlogname) {
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buf.append(String.valueOf(_name)).append(" - ");
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}
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buf.append(String.valueOf(message));
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if(t != null) {
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buf.append(" <");
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buf.append(t.toString());
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buf.append(">");
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t.printStackTrace();
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}
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System.out.println(buf.toString());
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}
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}
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public final void debug(Object message) {
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log(DEBUG,message,null);
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}
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public final void debug(Object message, Throwable t) {
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log(DEBUG,message,t);
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}
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public final void info(Object message) {
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log(INFO,message,null);
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}
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public final void info(Object message, Throwable t) {
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log(INFO,message,t);
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}
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public final void warn(Object message) {
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log(WARN,message,null);
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}
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public final void warn(Object message, Throwable t) {
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log(WARN,message,t);
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}
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public final void error(Object message) {
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log(ERROR,message,null);
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}
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public final void error(Object message, Throwable t) {
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log(ERROR,message,t);
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}
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public final void fatal(Object message) {
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log(FATAL,message,null);
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}
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public final void fatal(Object message, Throwable t) {
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log(FATAL,message,t);
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}
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public final boolean isDebugEnabled() {
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return (_logLevel >= DEBUG);
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}
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public final boolean isInfoEnabled() {
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return (_logLevel >= INFO);
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}
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public final void setLevel(int level) {
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_logLevel = level;
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}
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public final int getLevel() {
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return _logLevel;
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}
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}
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