ch.qos.logback.classic.pattern.NamedConverter Maven / Gradle / Ivy
/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2015, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.classic.pattern;
import ch.qos.logback.classic.spi.ILoggingEvent;
public abstract class NamedConverter extends ClassicConverter {
Abbreviator abbreviator = null;
/**
* Gets fully qualified name from event.
*
* @param event
* The LoggingEvent to process, cannot not be null.
* @return name, must not be null.
*/
protected abstract String getFullyQualifiedName(final ILoggingEvent event);
public void start() {
String optStr = getFirstOption();
if (optStr != null) {
try {
int targetLen = Integer.parseInt(optStr);
if (targetLen == 0) {
abbreviator = new ClassNameOnlyAbbreviator();
} else if (targetLen > 0) {
abbreviator = new TargetLengthBasedClassNameAbbreviator(targetLen);
}
} catch (NumberFormatException nfe) {
// FIXME: better error reporting
}
}
}
public String convert(ILoggingEvent event) {
String fqn = getFullyQualifiedName(event);
if (abbreviator == null) {
return fqn;
} else {
return abbreviator.abbreviate(fqn);
}
}
}