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/*
* <copyright>
*
* Copyright (c) 2005-2006 Markus Voelter and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Markus Voelter - Initial API and implementation
*
* </copyright>
*/
package org.eclipse.m2t.common.recipe.ui;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.sql.Timestamp;
import org.eclipse.m2t.common.recipe.ui.shared.iface.ITraceLog;
public class TraceLog implements ITraceLog {
private static PrintWriter pwLog = null;
private static int cvLogLevel;
private static String cvLogPath;
/**
* returns the current time format: YYYY-MM-DD hh:mm:ss.fff (String)
*/
private final static String getTime() {
// Variablen
String time;
Timestamp ts = new Timestamp(System.currentTimeMillis());
time = ts.toString();
// ggf. 1/100 Sekunden auffuellen
if (time.length() == 21) {
time += "0";
}
// ggf. 1/1000 Sekunden auffuellen
if (time.length() == 22) {
time += "0";
}
return time;
}
/**
* initializes log
*/
private static void initLog() {
if (cvLogPath == null)
cvLogPath = DEFAULT_LOGPATH;
try {
pwLog = new PrintWriter(new FileOutputStream(cvLogPath, true));
} catch (Exception e) {
e.printStackTrace(System.err);
}
}
/**
* Writes a log
*/
private final static void writeLog(String aLog) {
initLog();
if (pwLog != null) {
try {
pwLog.write(aLog);
pwLog.flush();
pwLog.close();
pwLog = null;
} catch (Exception e) {
System.err
.println("TraceLog.log(): Fehler: could not write to log file "
+ aLog);
e.printStackTrace(System.err);
}
} else {
System.err.println("TraceLog.log(): Fehler: Log nicht gestartet"
+ aLog);
}
}
/**
* Writes a log with a given level
*/
public final static void log(int aLevel, String aMessage) {
if ((aLevel > (CRITICAL | ERROR | INFO | DEBUG | TRACE | EXCEPTION))
|| (aLevel < 1)) {
log(new Exception("TraceLog.log(): Error: invalid Level " + aLevel));
} else {
if ((cvLogLevel & aLevel) != QUIET) {
StringBuffer log = new StringBuffer();
String seperator = "-";
// Zeitangabe
log.append(getTime());
log.append(' ');
// loglevel CRITICAL
if ((aLevel & CRITICAL) != 0) {
log.append("CRI");
} else {
log.append(seperator);
}
// loglevel ERROR
if ((aLevel & ERROR) != 0) {
log.append("ERR");
} else {
log.append(seperator);
}
// loglevel INFO
if ((aLevel & INFO) != 0) {
log.append("INF");
} else {
log.append(seperator);
}
// loglevel DEBUG
if ((aLevel & DEBUG) != 0) {
log.append("DEB");
} else {
log.append(seperator);
}
// loglevel TRACE
if ((aLevel & TRACE) != 0) {
log.append("TRC");
} else {
log.append(seperator);
}
// loglevel EXCEPTION
if ((aLevel & EXCEPTION) != 0) {
log.append("EXC");
} else {
log.append(seperator);
}
log.append(" ");
// Message
log.append(aMessage);
log.append("\n");
writeLog(log.toString());
}
}
}
/**
* Writes a log with a implicite level "EXCEPTION"
*/
public final static void log(Exception anException) {
StringWriter s = new StringWriter();
anException.printStackTrace(new PrintWriter(s));
log(TraceLog.EXCEPTION, s.toString());
}
/**
* Starts a new logging session with a given log level and a given log file
*/
public final static boolean startLogging(int aLevel, String aPath) {
boolean result = true;
cvLogLevel = aLevel;
cvLogPath = aPath;
if (aPath != null) {
try {
// Versuch eine bestehende Datei zu oeffnen
pwLog = new PrintWriter(new FileOutputStream(aPath, true));
} catch (IOException e) {
e.printStackTrace(System.err);
result = false;
}
log(INFO, "Session started");
} else {
pwLog = new PrintWriter(System.out);
}
return result;
}
}
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