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Log.Logger: System.out -> slf4j

This commit is contained in:
Dan Brown 2013-05-09 13:19:40 -04:00
parent e0f1cf1bc8
commit 35586d61bb
2 changed files with 23 additions and 55 deletions
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8
pom.xml
View File

@ -36,6 +36,14 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.5</version>
</dependency>
</dependencies>
<build>
<!-- Set nonstandard source dir -->
<sourceDirectory>src</sourceDirectory>

70
src/com/esotericsoftware/minlog/Log.java
View File

@ -1,10 +1,6 @@
package com.esotericsoftware.minlog;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Date;
/**
* A low overhead, lightweight logging system.
* @author Nathan Sweet <misc@n4te.com>
@ -27,7 +23,7 @@ public class Log {
* The level of messages that will be logged. Compiling this and the booleans below as "final" will cause the compiler to
* remove all "if (Log.info) ..." type statements below the set level.
*/
static private int level = LEVEL_INFO;
static private int level = LEVEL_TRACE; // Log everything to delegate control to slf4j
/** True when the ERROR level will be logged. */
static public boolean ERROR = level <= LEVEL_ERROR;
@ -170,65 +166,29 @@ public class Log {
}
/**
* Performs the actual logging. Default implementation logs to System.out. Extended and use {@link Log#logger} set to handle
* Performs the actual logging. Default implementation logs to slf4j. Extended and use {@link Log#logger} set to handle
* logging differently.
*/
static public class Logger {
private long firstLogTime = new Date().getTime();
// Log as "com.esotericsoftware.minlog"
public final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(Logger.class.getPackage().getName());
public void log (int level, String category, String message, Throwable ex) {
StringBuilder builder = new StringBuilder(256);
long time = new Date().getTime() - firstLogTime;
long minutes = time / (1000 * 60);
long seconds = time / (1000) % 60;
if (minutes <= 9) builder.append('0');
builder.append(minutes);
builder.append(':');
if (seconds <= 9) builder.append('0');
builder.append(seconds);
if (category != null) {
builder.append(category);
builder.append(": ");
}
builder.append(message);
String line = builder.toString();
switch (level) {
case LEVEL_ERROR:
builder.append(" ERROR: ");
break;
case LEVEL_WARN:
builder.append(" WARN: ");
break;
case LEVEL_INFO:
builder.append(" INFO: ");
break;
case LEVEL_DEBUG:
builder.append(" DEBUG: ");
break;
case LEVEL_TRACE:
builder.append(" TRACE: ");
break;
case LEVEL_ERROR: logger.error (line, ex); break;
case LEVEL_WARN: logger.warn (line, ex); break;
case LEVEL_INFO: logger.info (line, ex); break;
case LEVEL_DEBUG: logger.debug (line, ex); break;
case LEVEL_TRACE: logger.trace (line, ex); break;
}
if (category != null) {
builder.append('[');
builder.append(category);
builder.append("] ");
}
builder.append(message);
if (ex != null) {
StringWriter writer = new StringWriter(256);
ex.printStackTrace(new PrintWriter(writer));
builder.append('\n');
builder.append(writer.toString().trim());
}
print(builder.toString());
}
/**
* Prints the message to System.out. Called by the default implementation of {@link #log(int, String, String, Throwable)}.
*/
protected void print (String message) {
System.out.println(message);
}
}
}