/*
* Encog(tm) Core v3.4 - Java Version
* http://www.heatonresearch.com/encog/
* https://github.com/encog/encog-java-core
* Copyright 2008-2016 Heaton Research, Inc.
*
* Licensed 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.
*
* For more information on Heaton Research copyrights, licenses
* and trademarks visit:
* http://www.heatonresearch.com/copyright
*/
package org.encog.plugin.system;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Date;
import org.encog.plugin.EncogPluginBase;
import org.encog.plugin.EncogPluginLogging1;
import org.encog.util.logging.EncogLogging;
/**
* This is the built-in logging plugin for Encog. This plugin provides simple
* file and console logging.
*
*/
public class SystemLoggingPlugin implements EncogPluginLogging1 {
/**
* Create a stack trace.
*
* @param aThrowable
* The throwable to create the trace for.
* @return The stack trace as a string.
*/
public static String getStackTrace(final Throwable aThrowable) {
final Writer result = new StringWriter();
final PrintWriter printWriter = new PrintWriter(result);
aThrowable.printStackTrace(printWriter);
return result.toString();
}
/**
* The current level.
*/
private int currentLevel = EncogLogging.LEVEL_DISABLE;
/**
* True if we are logging to the console.
*/
private boolean logConsole = false;
/**
* {@inheritDoc}
*/
@Override
public final int getLogLevel() {
return this.currentLevel;
}
/**
* {@inheritDoc}
*/
@Override
public final String getPluginDescription() {
return "This is the built in logging for Encog, it logs "
+ "to either a file or System.out";
}
/**
* {@inheritDoc}
*/
@Override
public final String getPluginName() {
return "HRI-System-Logging";
}
/**
* @return This is a type-1 plugin.
*/
@Override
public final int getPluginType() {
return 1;
}
/**
* Log the message.
*
* @param level
* The logging level.
* @param message
* The logging message.
*/
@Override
public final void log(final int level, final String message) {
if (this.currentLevel <= level) {
final Date now = new Date();
final StringBuilder line = new StringBuilder();
line.append(now.toString());
line.append(" [");
switch (level) {
case EncogLogging.LEVEL_CRITICAL:
line.append("CRITICAL");
break;
case EncogLogging.LEVEL_ERROR:
line.append("ERROR");
break;
case EncogLogging.LEVEL_INFO:
line.append("INFO");
break;
case EncogLogging.LEVEL_DEBUG:
line.append("DEBUG");
break;
default:
line.append("?");
break;
}
line.append("][");
line.append(Thread.currentThread().getName());
line.append("]: ");
line.append(message);
if (this.logConsole) {
if (this.currentLevel > EncogLogging.LEVEL_ERROR) {
System.err.println(line.toString());
} else {
System.out.println(line.toString());
}
}
}
}
/**
* {@inheritDoc}
*/
@Override
public final void log(final int level, final Throwable t) {
log(level, SystemLoggingPlugin.getStackTrace(t));
}
/**
* Set the logging level.
*
* @param level
* The logging level.
*/
public final void setLogLevel(final int level) {
this.currentLevel = level;
}
/**
* Start logging to the console.
*/
public final void startConsoleLogging() {
stopLogging();
this.logConsole = true;
setLogLevel(EncogLogging.LEVEL_DEBUG);
}
/**
* Stop any console or file logging.
*/
public final void stopLogging() {
this.logConsole = false;
}
@Override
public int getPluginServiceType() {
// TODO Auto-generated method stub
return EncogPluginBase.TYPE_LOGGING;
}
}