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/*******************************************************************************
* Copyright (c) 2010 Sonatype, Inc.
* 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:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.m2e.internal.logging;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;
import org.osgi.framework.BundleContext;
import org.slf4j.LoggerFactory;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.classic.util.ContextInitializer;
import ch.qos.logback.core.joran.spi.JoranException;
import ch.qos.logback.core.util.StatusPrinter;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.core.runtime.Status;
import org.eclipse.osgi.service.datalocation.Location;
public class LogPlugin extends Plugin {
private static final String PLUGIN_ID = "org.eclipse.m2e.logback.configuration"; //$NON-NLS-1$
// This has to match the log directory in defaultLogbackConfiguration/logback.xml
public static final String PROPERTY_LOG_DIRECTORY = "org.eclipse.m2e.log.dir"; //$NON-NLS-1$
@Override
public void start(BundleContext context) throws Exception {
super.start(context);
configureLogger(context);
LogHelper.logJavaProperties(LoggerFactory.getLogger(LogPlugin.class));
}
private void systemOut(String message) {
System.out.println(PLUGIN_ID + ": " + message);
}
private void configureLogger(BundleContext context) {
if(System.getProperty(ContextInitializer.CONFIG_FILE_PROPERTY) != null) {
systemOut(ContextInitializer.CONFIG_FILE_PROPERTY + "="
+ System.getProperty(ContextInitializer.CONFIG_FILE_PROPERTY));
return;
}
Location instanceLocation = Platform.getInstanceLocation();
if(!instanceLocation.isSet()) {
new Exception("The " + PLUGIN_ID + " bundle was activated before the platform instance location was initialized.");
return;
}
File stateDir = getStateLocation().toFile();
File configFile = new File(stateDir, "logback." + context.getBundle().getVersion().toString() + ".xml");
systemOut("Logback config file: " + configFile.getAbsolutePath());
try {
if(!configFile.isFile()) {
// Copy the default config file to the actual config file
InputStream is = context.getBundle().getEntry("defaultLogbackConfiguration/logback.xml").openStream();
try {
configFile.getParentFile().mkdirs();
FileOutputStream fos = new FileOutputStream(configFile);
try {
for(byte[] buffer = new byte[1024 * 4];;) {
int n = is.read(buffer);
if(n < 0) {
break;
}
fos.write(buffer, 0, n);
}
} finally {
fos.close();
}
} finally {
is.close();
}
}
if(System.getProperty(PROPERTY_LOG_DIRECTORY, "").length() <= 0) {
System.setProperty(PROPERTY_LOG_DIRECTORY, stateDir.getAbsolutePath());
}
loadConfiguration(configFile.toURL());
} catch(Exception e) {
e.printStackTrace();
getLog().log(new Status(IStatus.WARNING, PLUGIN_ID, "Exception while setting up logging:" + e.getMessage(), e));
return;
}
}
private void loadConfiguration(URL configFile) throws JoranException {
LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
lc.reset();
JoranConfigurator configurator = new JoranConfigurator();
configurator.setContext(lc);
configurator.doConfigure(configFile);
StatusPrinter.printInCaseOfErrorsOrWarnings(lc);
}
}
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