From 110c49504f87c025423c923500bd52ea4615b33b Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Tue, 30 Jul 2013 20:42:02 +1200
Subject: Improve logging system (fix #278)

---
 src/org/traccar/helper/Log.java | 90 ++++++++++++++++++++++++++++-------------
 1 file changed, 62 insertions(+), 28 deletions(-)

(limited to 'src/org/traccar/helper/Log.java')

diff --git a/src/org/traccar/helper/Log.java b/src/org/traccar/helper/Log.java
index 983171b72..4cd61b933 100644
--- a/src/org/traccar/helper/Log.java
+++ b/src/org/traccar/helper/Log.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2012 - 2013 Anton Tananaev (anton.tananaev@gmail.com)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,53 +15,87 @@
  */
 package org.traccar.helper;
 
-import java.util.logging.Level;
-import java.util.logging.Logger;
+import java.io.IOException;
+import java.util.Properties;
+import org.apache.log4j.Appender;
+import org.apache.log4j.DailyRollingFileAppender;
+import org.apache.log4j.Layout;
+import org.apache.log4j.Level;
+import org.apache.log4j.LogManager;
+import org.apache.log4j.Logger;
+import org.apache.log4j.PatternLayout;
 
-/**
- * Logger
- */
 public class Log {
     
-    private static final String TRACCAR_LOGGER_NAME = "traccar";
-    
     private static Logger logger = null;
+    
+    public static void setupLogger(Properties properties) throws IOException {
+        if (Boolean.valueOf(properties.getProperty("logger.enable"))) {
+
+            Layout layout = new PatternLayout(
+                    "%d{yyyy-MM-dd HH:mm:ss} %5p: %m%n");
+
+            Appender appender = new DailyRollingFileAppender(
+                    layout, properties.getProperty("logger.file"), "'.'yyyyMMdd");
+
+            LogManager.resetConfiguration();
+            logger = Logger.getRootLogger();
+            logger.addAppender(appender);
+            logger.setLevel(Level.DEBUG);
+        }
+    }
 
-    /**
-     * Return global logger
-     */
     public static Logger getLogger() {
         if (logger == null) {
-            logger = Logger.getLogger(TRACCAR_LOGGER_NAME);
-            logger.setUseParentHandlers(false);
-            logger.setLevel(Level.ALL);
+            logger = Logger.getRootLogger();
+            logger.setLevel(Level.OFF);
         }
         return logger;
     }
     
-    private static void write(Level level, String msg) {
-        StackTraceElement[] stack = Thread.currentThread().getStackTrace();
-        if (stack != null && stack.length > 3) {
-            getLogger().logp(level, stack[3].getClassName(), stack[3].getMethodName(), msg);
-        } else {
-            getLogger().log(level, msg);
-        }
+    public static void error(String msg) {
+        getLogger().error(msg);
     }
 
-    public static void severe(String msg) {
-        write(Level.SEVERE, msg);
+    public static void warning(String msg) {
+        getLogger().warn(msg);
     }
 
-    public static void warning(String msg) {
-        write(Level.WARNING, msg);
+    public static void warning(Throwable exception) {
+        warning(null, exception);
+    }
+
+    public static void warning(String msg, Throwable exception) {
+        StringBuilder s = new StringBuilder();
+        if (msg != null) {
+            s.append(msg);
+            s.append(" - ");
+        }
+        if (exception != null) {
+            String exceptionMsg = exception.getMessage();
+            if (exceptionMsg != null) {
+                s.append(exceptionMsg);
+                s.append(" - ");
+            }
+            s.append(exception.getClass().getName());
+            StackTraceElement[] stack = exception.getStackTrace();
+            if (stack.length > 0) {
+                s.append(" (");
+                s.append(stack[0].getFileName());
+                s.append(":");
+                s.append(stack[0].getLineNumber());
+                s.append(")");
+            }
+        }
+        getLogger().warn(s.toString());
     }
 
     public static void info(String msg) {
-        write(Level.INFO, msg);
+        getLogger().info(msg);
     }
 
-    public static void fine(String msg) {
-        write(Level.FINE, msg);
+    public static void debug(String msg) {
+        getLogger().debug(msg);
     }
 
 }
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