CustomLoggerConverter.java

/*
 * Copyright 2015 the original author or authors.
 * 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.
 */

package org.springframework.xd.dirt.util.logging;

/**
 * @author David Turanski
 */

import ch.qos.logback.classic.pattern.Abbreviator;
import ch.qos.logback.classic.pattern.LoggerConverter;
import ch.qos.logback.classic.spi.ILoggingEvent;

public class CustomLoggerConverter extends LoggerConverter {
	private Abbreviator abbreviator;

	public void start() {
		String optStr = getFirstOption();
		if (optStr != null) {
			try {
				int targetLen = Integer.parseInt(optStr);
				abbreviator = new LoggerAbbreviator(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);
		}
	}

}