org.identityconnectors.common.logging.StdOutLogger Maven / Gradle / Ivy
/**
* ====================
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008-2009 Sun Microsystems, Inc. All rights reserved.
* Copyright 2011-2013 Tirasa. All rights reserved.
*
* The contents of this file are subject to the terms of the Common Development
* and Distribution License("CDDL") (the "License"). You may not use this file
* except in compliance with the License.
*
* You can obtain a copy of the License at https://oss.oracle.com/licenses/CDDL
* See the License for the specific language governing permissions and limitations
* under the License.
*
* When distributing the Covered Code, include this CDDL Header Notice in each file
* and include the License file at https://oss.oracle.com/licenses/CDDL.
* If applicable, add the following below this CDDL Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
* ====================
*/
package org.identityconnectors.common.logging;
import java.io.PrintStream;
import java.text.DateFormat;
import java.text.MessageFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.identityconnectors.common.StringPrintWriter;
import org.identityconnectors.common.logging.Log.Level;
/**
* Standard out logger. It logs all messages to STDOUT. The method {@link LogSpi#isLoggable(Class, Level)} will always
* return true so currently logging is not filtered.
*
* @author Will Droste
* @version $Revision: 1.5 $
* @since 1.0
*/
class StdOutLogger implements LogSpi {
private static final String PATTERN =
"Thread Id: {0}\tTime: {1}\tClass: {2}\tMethod: {3}\tLevel: {4}\tMessage: {5}";
/**
* Insures there is only one MessageFormat per thread since MessageFormat is not thread safe.
*/
private static final ThreadLocal MSG_FORMAT_HANDLER = new ThreadLocal() {
@Override
protected MessageFormat initialValue() {
return new MessageFormat(PATTERN);
}
};
private static final String DATE_PATTERN = "yyyy-MM-dd HH:mm:ss.SSS";
private static final ThreadLocal DATE_FORMAT_HANDLER = new ThreadLocal() {
@Override
protected DateFormat initialValue() {
return new SimpleDateFormat(DATE_PATTERN);
}
};
/**
* Logs the thread id, date, class, level, message, and optionally exception stack trace to standard out.
*
* @see LogSpi#log(Class, String, Level, String, Throwable)
*/
@Override
public void log(final Class clazz, final String methodName, final Level level,
final String message, final Throwable ex) {
final String now;
try {
now = DATE_FORMAT_HANDLER.get().format(new Date());
} finally {
DATE_FORMAT_HANDLER.remove();
}
final Object[] args =
new Object[]{Thread.currentThread().getId(), now, clazz.getName(), methodName, level, message};
final String msg;
try {
msg = MSG_FORMAT_HANDLER.get().format(args);
} finally {
MSG_FORMAT_HANDLER.remove();
}
final PrintStream out = Level.ERROR == level ? System.err : System.out;
out.println(msg);
if (ex != null) {
final StringPrintWriter wrt = new StringPrintWriter();
ex.printStackTrace(wrt);
out.print(wrt.getString());
}
}
/**
* Always returns true.
*/
@Override
public boolean isLoggable(final Class clazz, final Level level) {
return true;
}
}